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Masumi Sera

2017-03-20T19:15:06Z

8627937131f701a286774c43a25313a3: /* Friends & Family */

{{FeaturedArticle|March 23, 2011}}

{{SpoilerWarningArticle|This article contains significant '''[[Glossary#Spoiler|spoilers]]''' about major events concerning this person. It is likely you will be spoiled if you have not read all the manga released to date. To find out what pages will be safe for you to read, please consult our [[Glossary#Spoiler|wiki spoiler policy]].}}

{{InfoBox Char
| name = Masumi Sera
| japanese-name = {{lang|ja|世良真純}} (Sera Masumi)
| english-name =
| image = Masumi_Sera_Profile.jpg
| age = 16-17? 
| gender = Female
| date-of-birth =
| occupation = Teitan High School Student Detective
| relatives = [[Tsutomu Akai]] (father, deceased) [[Mary Sera]] (mother) [[Shuichi Akai]] (older brother) [[Shukichi Haneda]] (second-older brother)
| nicknames =
| first-appearance = Manga: [[Volume 73|File 768]] Anime: [[Deduction Showdown at the Haunted Hotel|Episode 646]]
| appearances = {{:Masumi Sera Appearances}}
| keyhole = [[Volume 73]]
| japanese-voice = [[Noriko Hidaka]]<ref>{{cite web|url=http://combination.jp/blog/2012/02/post-383.html|date=2012-02-01|accessdate=2012-02-01|title=新しいお仕事 | Blog | コンビネーション|publisher=combination Co.Ltd.|author=Noriko Hidaka}}</ref>
| cases-solved = 5
| footnotes =
}}
'''{{nihongo|Masumi Sera|世良真純|Sera Masumi}}''' is a high school detective in the manga and anime franchise ''[[Detective Conan]]''. She is the younger sister of [[Federal Bureau of Investigation|FBI]] agent [[Shuichi Akai]] and a practitioner of the martial art [[wikipedia:Jeet Kune Do|Jeet Kune Do]].

== Background ==
Masumi Sera is a high school detective and the younger sister of [[Federal Bureau of Investigation|FBI]] agent [[Shuichi Akai]]. She is the only daughter of [[Tsutomu Akai]] and [[Mary]]. 17 years ago, her father, before he disappeared, instructed his family to hide in Japan, where Masumi later was born. Her oldest brother had prior to her birth left Japan to study in America, so they first got to meet each other when Masumi was six-seven years old. Although she grew up in Japan during her elementary school years, she moved abroad three years ago with her mother, presumably due to Shuichi infiltrating the [[Black Organization]]. She has recently returned to Japan for some unknown reason. After meeting Conan, Ran, and Sonoko during a case, she transfers to [[Setting#Teitan High School (帝丹高校)|Ran's high school class]]. Masumi is skilled at [[Wikipedia:Jeet Kune Do|Jeet Kune Do]], a hobby encouraged by her brother Shuichi who mailed her instruction videos while in elementary school. She can fight on the same level as [[Ran Mouri|Ran]]. She seems to know that Conan is Shinichi and implies that she met Ran and Shinichi sometime in their past. Currently she is living with [[Mary]], whom she calls "Mama", at a hotel. She claims that she is provided for by a rich friend of her late father, but it hasn't been revealed who it is. Every time they encounter the possibility of information on Mary getting out, they end up moving to a new hotel under Mary's order. While Masumi is eager to seek help from Conan, Mary is skeptical of him.
She also has another older brother, and the three siblings has different last names. Sera is supposedly her mother's maiden name.

==Personality==
[[File:691-15.png|thumb|Masumi beats a gangster in [[Yusaku Kudo's Cold Case]]]]

Masumi has a cheery, sociable, boyish personality<ref>Manga Volume 73, File 9, Page 3, "Let's hear your brilliant deduction!"</ref> and is well liked by her classmates at Teitan High. On their first meeting, Masumi fails to correct Sonoko's mistaken impression that she is a man and even makes it worse by declaring that Ran is "[her] type".<ref name=pronouns>The Japanese pronoun used is gender neutral and can refer to either males or females.</ref> Her rather boyish appearance - especially in relation with her flat chest - is a bit of a touchy subject to Masumi, who claims that her mother's bust size is rather well developed and keeps expressing her hope that someday her own chest size will similarly change for her.

Masumi is quite quick-minded, coming up with clever plans and adapting them to sudden changes rapidly. Masumi seems to be prone to dramatics like most detectives are, but perhaps to a lesser degree than [[Shinichi]] or [[Heiji]] as she bluntly says who the criminal is without preamble. On the other hand, Masumi is tough to the point that she is willing to risk all to achieve a successful conclusion of a case. In one instance, she purposefully lured a hostage-taker into a sniper's sight with a smile, hoping he would be shot without showing any apprehension about his possible demise.

Although she has crime scene experience<ref name=769p3>Manga Volume 73, File 7, pg 3: "A Detective Just Like You, Little Boy"</ref>, Masumi seems to be less skilled as a detective than Shinichi or Heiji, apparently missing a critical clue that was necessary to understand how the murderer's setup worked, although Conan opines that Masumi purposely made an error in order to test him. In some degree, she seems to like rivalry or contests to see who is the winner.

Sera's catchphrase upon the conclusion of a case is "case closed".

Sera shows a protective and caring side towards Conan, as seen in the Detectives Nocturne and in the beginning of the Red Woman case when she helps Conan up after falling, as well as having it made clear in the Haunted Hotel case that she was also clearly investigating Conan before they first met, as she knew he was a detective. Its likely to believe that them being on the same bus was not an accident, which could even lead to be argued that she somehow hinted to them about the cake buffet so they would be on the same bus as her. It is safe to assume though she was, and possibly still is, investigating Conan.

Sera's way of referring to her parents as 'Mama' and 'Papa' indicates a privileges background.

== Appearance ==
[[File:Sera_transfers.png‎|thumb|Masumi transfers to Teitan High School]]

At first, she wears a grey fedora that used to belong to Shuichi Akai and a dark jacket which gives her an androgynous appearance. When she transfers to Teitan High, she gets rid of her fedora and wears female clothing. Her hair is dark, wavy, and short; it doesn't even touch her shoulders. Even then, she is rather tomboyish; Genta mistakes her for a man, and Sonoko comments she has a petite figure. Later, Genta, Mitsuhiko and Hattori comment that her bosoms are rather small. Masumi also has an uneven tooth that shows when she smiles.

Masumi and her brother Shuichi presumably more closely resemble their mother than their father.
{{clearleft}}

==Appellations==
<tabs jsId="nicknames">
<tab title="Protagonists">
{{appellations/head|Masumi}}
{{appellations|Conan Edogawa|Sera-san Sera-no-nēchan Sera Sera Masumi<ref name="file930">[[Volume 88#A Killer in Ramen Ogura|File 930 (Volume 88)]]</ref> [[Shuichi Akai|Akai-san]]'s younger sister (''Akai-san no imōto'')|Conan-kun Edogawa Conan-kun<ref name="file771">[[volume 73#Bomber's Request|File 771 (Volume 73)]]</ref> Boy (''Bōya''; first time) Wizard (''Mahō-tsukai'')}}

{{appellations|Shinichi Kudo|Sera Masumi (movie introdcution)<ref name="m18">Movie 18: ''[[Dimensional Sniper]]''</ref>|Kudo-kun Shinichi-kun Kudo Shinichi-kun<ref name="ep690">[[Yusaku Kudo's Cold Case|Episode 690]]</ref>| Kudo Shinichi}}

{{appellations|Ran Mouri|Sera-san Sera Masumi-chan<ref>File 778</ref> Sera-chan|Ran-chan Ran-kun}}

{{appellations|Kogoro Mouri|Tomboy-ish Girl|Kogoro-san Poiro-san ([[Hercule Poirot|'''Poiro'''t]] + Kogo'''ro''')<ref>[[Volume 78#Mystery Train|File 820 (Volume 78)]]</ref> Sleeping Kogoro-san (''Nemuri no Kogoro-san'')<ref name="file771" />}}
|}
</tab>
<tab title="Friends & relatives">
{{appellations/head|Masumi}}
{{appellations|Tsutomu Akai|-|Papa}}

{{appellations|Mary Sera|Masumi<ref name="file953">[[volume 90#Soul Detective Murder Case|File 953: As If Connecting with a Demon in the Darkness (Volume 90)]]</ref>|Mama<ref name="file953" /> The little sister from outside the domain (''ryōiki-gai no imōto'')}}

{{appellations|Shuichi Akai|Masumi|Shu-nii Oniichan<ref name="file972" /> Aniki<ref name="file936">[[Volume 88#Girls Band Murder Case|File 936]]</ref> Akai Shuichi<ref name="file938">[[volume 89#Girls Band Murder Case|File 938: The Crime in the Blind Spot (Volume 89)]]</ref> Ani<ref name="file859">[[volume 81#Bumper Brawn|File 859: Jeet Kune Do vs. Karate (Volume 81)]]</ref>}}

{{appellations|Subaru Okiya|Sera Masumi-san<ref name="file954">[[Volume 90#Bourbon's Mission|File 954: Sanction of the Betrayal (Volume 90)]]</ref> Sera-san<ref name="file954" />|Subaru}}

{{appellations|Shukichi Haneda|Masumi<ref name="file972">[[volume 92#A Chance Meeting at the Beach|File 972 (Volume 92)]]</ref>|Kichi-nii ([[Gosho Aoyama|Gosho]]'s thought)<ref>[[:File:AChint8-06-2014_4.JPG]] (Sera-chan calls him Kichi-nii)</ref> Kichi-niichan<ref name="file972" /> Aniki Chukichi (talking to [[Yumi Miyamoto|Yumi]])<ref>[[Volume 88#A Killer in Ramen Ogura|File 929 (Volume 88)]]</ref>}}

{{appellations|Sonoko Suzuki|Sera-san Sensei (once) Sera-chan Female High-School Detective (''JK Tantei'')<ref name="file938" /> Sera Masumi-san<ref name="file859" />|Sonoko-chan Sonoko-kun}}

{{appellations|Heiji Hattori|Female detective (''onna-tantei'')|Hattori-kun}}

{{appellations|Kazuha Toyama|-|The girl with the ponytail}}

{{appellations|Katsumasa Ogura|Mari-chan<ref name="file930" />|Taisho<ref name="file930" />}}
|}
</tab>
<tab title="Law enforcement">
{{appellations/head|Masumi}}
{{appellations|Juzo Megure|Female High-School Detective (''Jōshi-Kōsei Tantei'')|Inspector-san (''Keibu-san'')}}

{{appellations|Wataru Takagi|Sera-kun|Detective Takagi (''Takagi-keiji'')<ref>[[Volume 86#Poolside Case|File 905 (Volume 86)]]</ref>}}

{{appellations|Andre Camel|-|"FBI Guy"}}

{{appellations|Ginzo Nakamori|Boy (''Bōzu'')<ref name="file828">[[Volume 78#The Blush Mermaid|File 828 (Volume 78)]]</ref>|Inspector-san (''Keibu-san'')<ref name="file828" /> Inspector (''Keibu'')<ref name="file828"/>}}

{{appellations|Rei Furuya|-|Amuro-san<ref name="file937">[[Volume 88#Girls Band Murder Case|File 937]]</ref>}}

{{appellations|Scotch|-|Scotch<ref name="file937" /> [[Shuichi Akai|My brother]]'s friend (''Aniki no yūjin'')<ref name="file936" /> The friend (''sono yūjin'')<ref name="file936" />}}

{{appellations|Jugo Yokomizo|Young girl (''wakai no'')<ref name="file858">[[volume 81#Steamy Relations|File 858: A Problematic Deduction (Volume 81)]]</ref>|Inspector-san (''Keibu-san'')<ref name="file858" />}}
|}
</tab>
<tab title="Detective Boys">
{{appellations/head|Masumi}}
{{appellations|Ai Haibara|Sera Masumi<ref name="m18" />|Haibara Ai}}

{{appellations|Ayumi Yoshida|Onēsan<ref name="m18" />}}

{{appellations|Hiroshi Agasa|-|Professor Agasa (''Agasa-hakase'')}}
|}
</tab>
<tab title="Others">
{{appellations/head|Masumi}}
{{appellations|Yusaku Kudo|-|Kudo Yusaku<ref name="ep690" />}}

{{appellations|Yukiko Kudo|Sera<ref>[[Volume 78]], File 6</ref>|-}}

{{appellations|Scar Akai|Masumi<ref name="MT">[[The Jet-Black Mystery Train]]</ref>|Shu-nii<ref name="MT" /> Acquaintance (''shiriai'')}}

{{appellations|Makoto Kyogoku|-|Master of Karate (''Karate no Tatsujin'')}}

{{appellations|Kohji Haneda|-|Haneda<ref>[[volume 90#Soul Detective Murder Case|File 952: In the Suspicious Next Room (Volume 90)]]</ref> Haneda Kohji<ref name="file953" />}}

{{appellations|Asaka|-|Asaka<ref name="file953" />|file=Asaka manga.jpg}}
|}
</tab>
</tabs>

==Plot overview==
=== Masumi's Introduction (Manga: [[Volume 73#Jeet Kune Do|768 - 770]], Anime: [[Deduction Showdown at the Haunted Hotel|646 - 647)]] ===
[[File:Sera_Kick.png|thumb|right|Masumi defends herself from Ran.]]
Masumi first met [[Sonoko Suzuki|Sonoko]], [[Ran Mouri|Ran]], and [[Conan Edogawa|Conan]] on a bus after she was mistaken for a [[Wikipedia:Groping|groper]]. After Sonoko declared Masumi was the groper, Masumi and Ran got into a fight, with Masumi's Jeet Kune Do holding even against Ran's karate. Conan and Masumi cleared up the misunderstanding by pointing out the real groper. Sonoko then mistook Masumi for a boy, an impression which wasn't helped by Masumi declaring that Ran was "his type".<ref name=pronouns/> Masumi and Ran both discovered they were heading to the same hotel, about which Conan is less than pleased.

Masumi finds out the hotel she is staying at doesn't have a room available and complains at the front desk. A man then falls into the parking lot and dies. Conan runs to the source of screaming while Masumi told the guard to watch the elevators before running to the roof. She immediately declares the crime to be a murder, giving her reasoning. She then reveals her name, Masumi, that she is a detective, and knows Conan is a detective as well. She also revealed before she knew Conan's name despite it not being mentioned in front of her, revealing that Masumi has been investigating Conan for awhile now.

[[Juzo Megure|Inspector Megure]] is not pleased to have another high school detective underfoot but lets Masumi and Conan investigate regardless. After listening to the suspect testimony, police observations, and examining the crime scene, Masumi announces that she has solved the case.

However, Masumi's deduction leaves out a critical detail; Conan is therefore forced to use Shinichi's phone to call his own, give Inspector Megure Conan's phone, and speak through Shinichi's as Shinichi using the voice-changer bow tie. Shinichi figures out the detail that had Masumi stumped, although a look she gives Conan as he runs off suggests her omission was possibly intentional, and once during the phone conversation she tries to trick Shinichi into admitting that he is physically present at the crime scene instead of being explained the details by Conan and Megure.

The following day, Masumi transfers to Teitan High School, surprising both Ran and Sonoko. She was rather popular at school surrounded by students asking her questions about herself.

===Kogoro Detective Agency Hostage Crisis (Manga: [[Volume 73#Bomber's Request|771]]-[[Volume 74#Bomber's Request|774]], Anime: [[Hostage Situation at the Mouri Detective Agency|648 - 650]])===

====Let's hear your brilliant deduction! (771)====
According to Sonoko, Masumi has become very popular at Teitan high for being "cheery, sociable, boyish, and cute...and on top of that, she is a jeet kun do-using female detective!"<ref>Manga Volume 73, File 9, Page 3, "Let's hear your brilliant deduction!"</ref> One classmate compares her to [[Shinichi Kudo]] who has been taking a break from school. Masumi tells inquiring classmates that she has been staying in America with her parents since three years ago, but "rebelled" because she would rather live in her Japan where she was born and raised. She sneaks up behind Sonoko and Ran after school because she wanted to speak to Conan at the Mouri Detective Agency. At the agency, Masumi is unhappy to hear that Conan and the rest of Detective Boys are staying at Agasa's house and will be camping the following day. She settles for asking Kogoro if Conan is always at his side when he solves cases, hinting that she suspects Conan is the real brains behind "Sleeping Kogoro".

[[File:Sera_slide_kick.png|thumb|left|Masumi sweeps out the Hostage Taker's legs]]
Just as Masumi is about to walk out the door, three female mystery writers and a man enter the agency. After a moment of confusion, the man suddenly fires a gun into the roof and takes the detective agency hostage. His demands are that Kogoro figure out which of the three writers killed his sister at a ryokan one month ago. The quick thinking Masumi sidles up to Ran and tells her to go for the man's gun after she takes his legs out. Sera's leg sweep sends the man to the floor, and Ran removes the gun from the man's hand with a kick; however, Masumi leaps back when the man reveals he has bombs strapped around his chest and will detonate them if they try to stop him.

Meanwhile at Agasa's, Haibara is angry that Conan used Shinichi's voice to solve a case around the suspicious Masumi. Conan's response is that Masumi is familiar somehow, like they have met before or she looks like someone, and Conan feels she isn't an enemy. Genta and Mitsuhiko told Conan they saw a high school student walking home with Ran, so the jealous Conan calls Ran's cellphone to hear about it from her.

The hostage taker man orders Ran to answer her phone, but Masumi snatches the phone away and says hello to Conan (who is shocked that Masumi is with Ran). Masumi then tricks the hostage taker and keeps the line connected so Conan can listen in by closing Ran's [[Yaiba#Characters|Sea Cucumber Man]] cellphone strap in between the screen and keypad of the the flip phone.

====Nickname Rules (772)====
Masumi asks a few insightful questions about the case; however the hostage taker man discovers Ran's phone is still connected. Under gunpoint, Masumi steps in front of Ran and takes the blame, but Conan, using Shinichi's voice, says he ordered Ran to do it. Masumi is mystified by why Shinichi is now on Conan's phone. Masumi meanwhile spots a glint of light across from the detective agency and declares that the case will come to an end without Shinichi's help.

====Possible Sniping (773)====
[[File:Sera773.png|thumb|right|Masumi surprised by Ran's attitude.]]
Masumi explains to Ran that she secretly kept the call to Conan connected so he could call the police and research into the case. While Masumi is still surprised that Shinichi was on the other end of the line instead of Conan, she had initially hoped that Shinichi would somehow be able to talk down the would-be-murderer. She suspects that Shinichi has already figured which one of the suspects is the murderer in the ryokan case, but Shinichi is unable to reveal the truth because the hostage taker would then kill the named culprit and then himself. Sera's plan changed when she noticed the lights from the police snipers on the building across from Mouri Detective Agency. She explains to Ran in detail the names and functions of the various police divisions responsible for hostage situations, and tells Ran in a roundabout fashion that this situation will end with the hostage taker being killed by the police.

Masumi launches a plan to bring the hostage taker into the snipers' range by telling him he should charge Ran's phone battery. Ran foils Sera's intentions by shutting the curtains, blocking the snipers' shot. To Masumi's utter astonishment, Ran tells her that she doesn't want to see anyone die in front of her and declares that "Shinichi won't allow anyone to die. He absolutely wouldn't!"<ref>Volume 73, File 11, page 13, "Possible Sniping." Shinichi then begins to present his deductions over the phone and Masumi wonders how he will manage to resolve this situation without bloodshed.</ref>

====The book with unturned pages (774)====
Masumi and Ran take the opportunity to disable the hostage taker when he loses his composure and grip on the detonator after Shinichi tricks him into believing his sister committed suicide. Masumi yells for the waiting bomb squad to secure the area. With the hostage taker arrested, Shinichi then reveals the true culprit. Masumi realizes the mistake in her deduction and explains the correct timeline of events before the murder. Sometime soon after the conclusion of the case, Masumi, walking with Ran and Sonoko speculates aloud that there must be some reason Shinichi left Agasa's before Ran could meet him there. She then exclaims that "due to what just happened, she really gets it", that Conan and Shinichi are on very good terms with one another, and that Ran "is tougher than Masumi thought". Conan isn't sure what to make of these last comments.

===Video Site (Manga: [[Volume 74|775-777]], Anime: [[The Professor's Video Site|656-657]])===
[[File:Ai image.png|thumb|Masumi deletes Haibara's image]]

Masumi stops [[Genta Kojima|Genta]] and [[Mitsuhiko Tsuburaya|Mitsuhiko]] outside of [[Hiroshi Agasa|Agasa]]'s house to ask them if they are acquaintances of Professor Agasa. The topic of [[Shinichi]] comes up when she talks to Mitsuhiko and Genta about the prior hostage case. Mitsuhiko mentions that [[Ai Haibara|Haibara]] told them to keep Shinichi's involvement secret. After asking about Haibara, Masumi mentions that she saw Haibara in one of the professor's online videos. Next, Masumi asks who is currently living in the Kudo house because she saw the curtains shift slightly. The Detective Boys tell her that [[Subaru Okiya]] has been staying there since his apartment burnt down. Masumi cryptically comments with a smirk on her face, "And here I thought that someone had just settled in without permission...But it seems I was just getting worked up over nothing..." while looking up at where Subaru is hiding.

At the end of the case, Masumi is in her hotel room deleting various files. One of her deleted files was a still image from Agasa's video blown up to show Haibara reflected in Agasa's glasses. This indicates that she is not only keeping an eye on Conan but also on Haibara.
"Delete... Delete... For data, at least is an easy task to accomplish...", were her words while she was doing it.

===East vs. West Rematch (Manga: [[Volume_74#East_vs._West|778-780]], Anime: [[Conan vs. Heiji, Deduction Battle Between the Detectives of the East and West|651]])===
[[File:Sera FBI.png|thumb|left|Masumi thinks about the FBI]]
The case opens with Ran talking to Masumi about [[Heiji Hattori]] who is stopping by for a visit. Masumi is curious whether Heiji or Shinichi is the better detective. After Heiji is introduced to Masumi, Kazuha then calls Heiji and tells him that she is stuck at a restaurant because someone died and a foreigner [[Andre Camel]] is keeping everyone from leaving. Masumi proposes Heiji and Shinichi (via Conan's cellphone) have a deduction match. At the crime scene, Masumi becomes curious about the foreigner, Camel who secured the area. The police and Conan reveal Camel is an [[Federal Bureau of Investigation|FBI]] agent and Masumi takes interest. Meanwhile, Camel finds that Masumi looks familiar, but can't quite place why. He takes a picture of her and mails it to [[Jodie Starling|Jodie]] and [[James Black]] who are waiting outside. Jodie and James think Masumi resembles someone too, but only James Black correctly identified Masumi as female.

Meanwhile Masumi is busy helping with the case, asking questions and making comments about various deductions. Heiji nearly slips up with Conan's identity in front of her earning a pointed question from Masumi, but Heiji rescues himself by saying he thinks of Conan as Kudo when Conan gets smug have hearing Shinichi's deductions over the phone. Masumi doesn't seemed to be fooled though, her thoughts show that she seems to know Conan, not Shinichi, is the one solving the case while watching Conan come to his final conclusion.

===EYE (Manga: [[Volume_74#Eye_for_an_Eye|781]], Anime: [[The Design of Poison and Mirage|652]])===
Conan, Heiji, Masumi, and the rest of the group return to the Mouri Detective Agency after the poisoning case at Danny's restaurant. Heiji reveals the case that brought him to Tokyo; he received a mysterious letter signed in the name of a person who was murdered in Karuizawa requesting an investigation. Masumi takes an immediate interest in the case and wants to tag along, but Heiji refuses saying that the people he is visiting are only expected five people. Masumi is peeved at being left behind.

===Kogoro-san is a Good Man (Manga: [[Volume 75|787]], Anime: [[Kogoro-san is a Good Man|661]])===
Masumi is walking with Conan, Ran and Sonoko. While they wonder why Kogoro has been coming home late, Sonoko thinks he's found himself a mistress. Masumi thinks that he is just investigating a case. When an old lady named Takae Kiritani comes, she claims that Kogoro has been helping her. Masumi asks what he does for her to which she replies that its small things like helping around the house. Masumi isn't seen again for the rest of the case.

===Murder at Mouri Detective Agency (Manga: [[Volume 76|797-800]], Anime: [[Detectives' Nocturne|672-674]])===
[[File:Sera's motorcycle.jpg|thumb|right|Masumi in her motorcycle.]]
During a murder case at Mouri Detective Agency, after meeting Kogoro's new apprentice [[Rei Furuya|Tooru Amuro]], [[Juzo Megure|Megure]] comments that the number of detectives around Kogoro has increased again, referring to Masumi. Amuro takes interest in Masumi. Later, Kogoro and friends go over to a suspect's apartment. Masumi calls Ran after hearing about the murder on the news because she is worried about her and Conan. The call has an usual amount of static which alerts Amuro that there are listening devices present. Amuro abruptly hangs up Ran's phone on Masumi. Meanwhile, Conan intentionally gets himself kidnapped by the primary suspect. After Ran enables calling again, Masumi calls back immediately and is very upset because she was worried something had happened to Ran. Ran tells her that Conan has been kidnapped, and details to Masumi the murder at Kogoro's agency. In order to figure out where the kidnapper is headed, Kogoro and Amuro search the apartment and decide to go to the address of one of the other suspects.

Masumi arrives at suspect's home on [[Cars|her motorcycle]], but just misses Kogoro and the gang leaving. She hears the elevator descending and rushes back downstairs in time to follow Amuro's [[Cars|car]]. Meanwhile, the culprit has been driving around with Conan while Haibara has been directing Okiya's car towards them using the criminal tracking glasses. Okiya catches up to the kidnapper and relays what the car looks like to Kogoro. Amuro sees the suspect's car heading in the opposite direction so he quickly wheels around after it. Masumi, who has been following Amuro's car this whole time, u-turns after Amuro and continues chasing. Amuro gets in front of the suspect's car and stops it. The suspect gets out of the car holding Conan at gunpoint, but Masumi drives up onto the roof of the car. She swings her motorcycle around so that the rear wheel slams into the woman's face knocking her unconscious. With tears of relief, Masumi hugs Conan, happy he is safe. Amuro, Okiya, and [[Vermouth]] look on.

===Meeting with Scar Akai (Manga: [[Volume 76|801]], Anime: [[Won't Forgive Even One Millimeter|675]])===
[[File:Sera_675.jpg|thumb|left|220px|Masumi looking for Scar Akai.]]
Masumi is walking with Sonoko and Ran, and Ran is talking by phone with Conan. Masumi hears Haibara's voice in the background and becomes curious. She asks the two others what Haibara is like, and Sonoko says Haibara is like a woman in a child's body.

When Ran hangs up her cellphone, the topic switches over to [[Rei Furuya|Amuro]]. Masumi says to Ran she wants to meet Amuro because she never got a really good look at him from the last case, but Sonoko thinks she wants to meet Conan, instead. Ran says Shinichi and Conan are big fans of Sherlock Holmes. Masumi thinks about that she has known that for a long time.

Suddenly, Masumi sees [[Scar Akai]] in the crowd ahead. She runs after him, but she can't catch him. Ran wonders who Masumi was chasing, but Masumi replies she thought it was someone she knew, and silently appends in her mind that it would be impossible for the man she was chasing to be the person she thinks it was.

[[File:690-3.png|thumb|Masumi is shocked to see Subaru]]
===Yusaku Kudo's Cold Case (Manga: [[Volume 77|812-814]], Anime: [[Yusaku Kudo's Cold Case|690-691]])===
Masumi meets [[Subaru Okiya]] at Shinichi's house and she finds him suspicious. She began to think there is a woman at Kudo's house because there are a hair elastic, lipstick in a glass and a long hair in the sink trap. After that, all of them solved a case together that is similar to a case that Shinichi Kudo's father dropped out 10 years ago. It was revealed to be a theft case. Both Subaru and Masumi had got more suspicious of Conan and the identity of Shinichi Kudo. At the end, when the criminals were knocked, she saw Ran and Conan and she thought she was a 'bad kid', after all.

===Gunma Campground's Cabin Trap (Manga: [[Volume 77|815-817]], Anime: [[The Shadow Approaching Haibara's Secret|699-700]])===
[[File:Masome.png|thumb|left|120px|Masumi at the campground]]
She went camping when she meets Professor Agasa and Conan. The Detective Boys were lost. Masumi and Conan found the two policemen finding the corpse. After she and Conan solved the case, she and Conan rushed towards the burning cabin. Conan and the Detective Boys were talking about how they got safe. Mitsuhiko pointed the way were their savior went. Masumi then began to ask what kind of woman is their savior. She seemed to be surprised when she saw her on Mitsuhiko's cell phone.
{{clear}}
[[File:new-sera.png|thumb|left|150px|Masumi leans in to get a good look at Haibara]]
[[File:Sera is akai sister.jpg|thumb|right|200px|Masumi is revealed to be Shuichi's sister.]]

===Mystery Train (Manga: [[Volume 78|818-824]], Anime: [[The Jet-Black Mystery Train|701-704]])===
Masumi finally meets Haibara, and Haibara has a bad feeling about her (although it could have been due to Scar Akai spying on them from behind the door just then). Later when a murder occurs on the Bell Tree Express, she and Conan investigate. Masumi takes a video recording of the suspects running so she can show it to the detective boys in order to ask them which one had the closest gait to the masked suspect from earlier, but she is intercepted first by Scar Akai in the hallway. She stops and angrily asks him who he is. Scar Akai simply replies that she hasn't changed, reveals his face to her, and refers to her by her first name, "Masumi". In her shock Masumi calls him "Shu-nii", signifying that Shuichi is Masumi's older brother. She questions Scar Akai about what happened, saying that she heard he had died. Scar Akai then tasers her unconscious, stating that he was hoping for that response. Scar Akai later is revealed to be Vermouth in disguise, explaining why he attacked Masumi.

===The Blush Mermaid Heist (Manga: [[Volume 78|828]]-[[Volume 79|830]], Anime: [[Kaitou Kid and the Blush Mermaid|724-725]])===
[[File:SeraHat.jpg|left|thumb|200px|Masumi is relieved that she has got her hat back.]]
Masumi accompanies Conan, Ran, and Sonoko to the location of Kaitou Kid's next heist: a museum where the Blush Mermaid, a gem adhered to the shell of a turtle as a last ditch effort by a an Italian actress in an accident at sea to save her turtle by encouraging someone to rescue it. Before checking out the museum, Masumi asks Ran if she saw a [[Scar Akai|strange man in black]] when she found the hat on the Belltree Express. After the group arrives at the room where the turtle is being held in a large aquarium, [[Ginzo Nakamori|Inspector Nakamori]] pulls Masumi's face to see if it is a mask worn by Kid. Annoyed by Nakamori's mistaken gender assumption and having her face pinched, Masumi knees him in the privates ostensibly to prove he isn't Kid. Masumi then runs off to the bathroom. Later, when Kid makes his move, Masumi is one of many caught in his trap: the rug on the floor is pulled up by strings so that it pins everyone standing on it to the front of aquarium. As soon as the rug drops, everyone sees the tank is empty except for a card left by Kid. This leaves Conan and Masumi quite dumbfounded as to how Kaitou Kid could have removed the turtle. Later, Conan reveals that Masumi is really Kaitou Kid, and he had made a critical error in his acting by assuming Masumi was a male. Kaitou Kid had locked the real Masumi bound and gagged in the men's bathroom after knocking her out with a stun gun. Upon gaining consciousness, Masumi escapes her bonds, rushes out of the bathroom, and gives a still disguised Kid a fierce kick to the face. After Kid escapes (due to Ran distracting Masumi by pointing out that everyone can see her underwear), Masumi is relieved that she at least managed to recover her hat, which she thinks is special because it somehow has the same feel as her brother Shuichi Akai's hat.

=== Cooking Show Murder (Manga: [[Volume 80|844-846]], Anime: [[The Treasure Chest Filled with Fruits|727-728]])===
[[File:SeraSmile.jpg|right|thumb|150px|Masumi is smiling and blushing when Conan asks her if they had met each other before.]]
Conan, Ran, Sonoko, Kogoro and Masumi go to a live cooking show. Conan wants to ask something important to Masumi, but a murder gets in his way. While solving the case, Ran realises that Masumi and her might have met each other before, since Ran thinks of waves in the beach each time Masumi gets away. At the end of the case, Conan asks Masumi if they had met each other before. Masumi smiles and says she doesn´t know, but actually she thinks "Of course we have, but I can´t tell you until the time comes..."

===Adultery Investigation (Manga: [[Volume 81|856-858]], Anime: [[Bathroom Where Ran Collapsed As Well|740-741]] )===
[[File:SeraCall.png|left|thumb|150px|Masumi is calling her brother on the phone.]]
After being hired by a classmate, Keiko Kitao, Masumi is investigating to see if the boyfriend of Keiko's sister has fully committed to their relationship. However, as the atmosphere is rapidly changed by the murder, Masumi and Conan start to investigate the crime scene. When Conan has finally deduced who the culprit is, he also observes Masumi making a call with someone saying "...Say, my deduction... It's not wrong, is it?". Upon solving the case, Eri states having seen Masumi talking to her brother on the phone.

=== Meeting Makoto (Manga: [[Volume 81|859-861]], Anime: [[The Suspect is Makoto Kyogoku|744-745]])===
[[File:SeraAndMakoto.jpg|right|thumb|200px|Masumi attacks Makoto with her Jeet Kune Do.]]
At a Bowling Center with Conan, Ran, Sonoko and Kogoro, Masumi is introduced to Sonoko's boyfriend Makoto. Shortly before, Makoto mistakes Masumi for a stranger being "overly friendly" with Sonoko and tries to fight her. Masumi explains that she has been taught Jeet Kune Do by her older brother, she also reveals that besides her assumingly dead brother, she also has a second-oldest brother. Furthermore, Masumi explains to Conan that her brother also advises her on cases by phone. After successfully investigating the crime scene with Conan, Masumi steps aside with her smartphone and types in the message "It seems like he's also arrived at the truth... But whether or not our deductions are the same - lately I've been losing confidence in that regard...". When the recipient writes back "Who is he? I'd like an explanation!", Masumi takes a picture with her smartphone. However, the recipient's answer, "If it's him, there's no problem." reveals that he is familiar with Conan. It is heavily implied that it is the same person Conan saw Masumi making a call with in File 857.

===Red Woman Case (Manga: [[Volume 82|872]]-[[Volume 83|875]], Anime: [[The Tragedy of the Red Woman|754-756]])===
Masumi takes a request from her middle brother to consult in his place about a case involving some of his high school classmates who are now 28-29 years old. On the way to a cabin in the woods, Masumi tells Conan and the gang more about her family history and timeline. She reveals that she and her brothers each have different family names for various reasons, one of which is the death of her father. The case takes a dark turn when one of the classmates is found murdered in a bathtub of tomatoes. With the help of the Nagano police, Conan and Masumi manage to solve the case. Later, Masumi asks Conan to find her cellphone in the kitchen by calling it with his. He does so and Conan notices the call background screen is a [[Mary|child who looks like Masumi]] with eye bags similar to those of the [[Akai family]] members. Masumi mentions having a younger sister earlier on (Episode 754), so Conan suspects Masumi was intentionally trying to show him the child for some reason.

===Romance Novelist Murder Case (Manga: [[Volume 83|876]]-[[Volume 83|878]], Anime: [[The Romance Novel with the Unexpected Conclusion|759-760]])===
On the way home from school, Ran and Sonoko decide to visit Masumi's hotel (which is different from the other one she has been staying at earlier). Masumi claims she had a meeting with her supposedly-hard-to-reach [[Akai family's middle brother|middle brother]] planned, so she texts him to reschedule. Conan seems to notice this contradiction. At the hotel, Conan tries to peek in Masumi's bedroom, but Masumi wards him off by embarrassing him. Masumi also asks Conan is she reminds him of someone he met in the past, but Conan draws a blank. A murder interrupts the meeting. While Conan is investigating, he notices the middle-school aged [[Mary|child]] from Masumi's cellphone picture in the gathered crowd. Later, Conan and the gang return to Masumi's room, and Conan hides his glasses earpiece [[microphone]] to spy on the apartment. It is quickly found and destroyed by Masumi and the child after Conan departs with Ran and Sonoko. Masumi asks the child is she is beginning to like him, but the child responds that she is still long way from trusting him. The child asks Masumi to tell Conan she is her little sister from outside the territory if he asks about her. Masumi doesn't mention that she showed Conan the child's picture.
[[File:Masumi and Scotch Flashback EP836 (3).jpg|150px|thumb|right|Masumi remembers meeting a man nicknamed Scotch]]

=== Shogi Tournament (Manga: [[Volume 85|899-902]], Anime: [[Taiko Meijin's Match of Love|785-786]]) ===

=== Poolside Case (Manga: [[Volume 85|903]]-[[Volume 86|905]], Anime: [[The Mystery Sinking in the Midsummer Pool|787-788]]) ===

=== Ran & Shinichi - First Contact (Manga: [[Volume 87#Ran & Shinichi - First Contact|921-924]], Anime: [[Memories from Sakura Class|853-854]]) ===

=== A Killer in Ramen Ogura (Manga: [[Volume 88#A Killer in Ramen Ogura|928-930]], Anime: [[Ramen So Good, It's to Die For 2|827-828]]) ===

=== Girls Band Murder Case (Manga: [[Volume 88#Girls Band Murder Case|936-938]], Anime:[[The Unfriendly Girls Band|836-837]]) ===
Four years ago, Masumi was taught a few notes on the base guitar by a friend of her brother, [[Shuichi Akai|Shuichi]]. The friend was referred to as "[[Scotch]]" by another person who Masumi thinks looks like [[Rei Furuya|Rei]].

=== Soul Detective Murder Case (Manga: [[volume 90#Soul Detective Murder Case|951-953]], Anime: TBA) ===

=== Swimsuit Festival Murder Case (Manga: [[Volume_91#Swimsuit_Festival|969]]-[[Volume_92#Swimsuit_Festival|971]], Anime:TBA) ===
Masumi intentionally puts on a bathing suit similar to the one that she had worn in the past to try to jog Conan's memory of where they met. A case occurs, which involved the method of counting fingers in different countries. Masumi seems to count the same way that is used in the UK, but seems to think that it is the way it is done in the US. As Conan corrects her, she seems confused. Conan thinks back on all of the times that Masumi has done things that seem to imply that she was in the UK rather than the US and he finally remembers the events of 10 years ago by repeating イギリス (Igirisu / Britain) in is head.
{{clear}}

=== A Chance Meeting at the Beach (Manga: [[Volume_92#A_Chance_Meeting_at_the_Beach|972-974]], Anime:TBA) ===

== Non-Canon Plot Overview ==

=== Movie 18: [[Dimensional Sniper]] ===
Sera appeared in this movie as an investigator of the person who had been shot in the Bell Tower. She and Conan helped in chasing the culprit and afterwards was shot by the culprit after saving Conan.

== Plot Exposition ==
=== Hints that Masumi was Shuichi Akai's sister ===
Masumi was revealed to be Shuichi Akai's sister on the Bell Tree Express after a confrontation with [[Scar Akai]]<ref name=821p16>Manga [[Volume 78]], File 4 (821), pg 16: "Mystery Train (Junction)"</ref> and while sleeptalking.<ref name=823p4>Manga [[Volume 78]], File 6 (823), pg 4: "Mystery Train (Releasing Smoke)"</ref>
[[File:Sera_and_Shuuichi.png|thumb|right|300px|Masumi and [[Shuichi Akai]].]]
* Masumi has bags under her eyes identical to Shuichi Akai's.
* Masumi Sera's name is also incredibly similar to Mobile Suit Gundam character [http://gundam.wikia.com/wiki/Sayla_Mass Sayla Mass] ({{lang|ja|セイラ・マス}}, ''Seira Masu''). [[Shuichi Akai#Name origin|Shuichi's name is derived]] from Sayla Mass's older brother's name, Char Aznable.
* Conan said he has a feeling he had met her before. "''Somehow I feel like we've met somewhere before, it might be that person resembles someone I know, that's why the feeling that we've met before is on my mind...''"<ref>Manga Chapter 771: Let's Hear Your Brilliant Deduction! p.11</ref>
* [[Andre Camel]] and most likely [[James Black]] seem to recognize her from somewhere. On another interesting note, James was the first to recognize that Masumi was a girl. Everyone else thought that she was a guy when they first saw her. Since James was Shuichi's boss, he would most likely know that Shuichi has a younger sister and what she would look like.
* Masumi lived in Japan until three years ago when her family moved to America. This matches with the time when Shuichi was infiltrating the Black Organization. The family's move to America could be the FBI's attempt to protect them should something go wrong with Shuichi's mission.
* In Chapter 801, Masumi chased after [[Scar Akai]] who appeared while she was walking with Ran in front of the Mouri Detective Agency. Although, Scar Akai hid before she could find him, she told Ran that she had just seen "someone she knew".
* In Chapter 859, Masumi, when being asked who taught her Jeet Kune Do, answers that her older brother did. Consequently, Conan asks Sera: "But, didn't you say your older brother was dead?" This leads to Masumi remarking "Yeah... That's what I heard." also further supporting the theory that Masumi is in Japan to investigate her brother's death.

=== Hints that Masumi was not Bourbon ===
* In Chapter 801, Masumi chased after [[Scar Akai]] who appeared while she was walking with Ran in front of the Mouri Detective Agency. Although, Scar Akai hid before she could find him, she told Ran that she had just seen "someone she knew". She then thinks there is "no way it was possible" regarding the man she saw, which would make sense if she thought Shuichi was dead. This implied she wasn't Bourbon, since Bourbon believes he is the only one who can kill Shuichi, implying that Gin might have failed to do so. Hence Bourbon wouldn't think that it was impossible to meet Shuichi again in the street.

==Relationships analysis==

===Friends & Family ===

==== Shuichi Akai ====
[[Shuichi Akai]] is Masumi's older brother. She didn't get to meet him until she was six-seven years old, because Shuichi went to study abroad before Masumi was born. At first meeting she was very shy, but she did make some pranks in an attempt to make him smile. Masumi refers to Shuichi as "Shu-nii", implying that they were close. Masumi seems to miss him after his supposed death. In the Blush Mermaid Heist, Masumi is shown to be fond of her fedora as she believes it has the same "feel" as Shuichi's old hats. Shuichi sent Masumi Jeet-Kune-Do training tapes while she was in elementary school. She watched these so many times while practicing that she wore them out.<ref name="876p2">Manga [[Volume 83]], File 4 (876), pg 2: "Romance Novelist"</ref> She describes her eldest brother as ''strong'' in contrast to her second - oldest brother.<ref name="859p6-7">Manga [[Volume 81]], File 9 (859): pgs 6-7: "Jeet Kune Do vs. Karate"</ref>

==== Conan Edogawa ====
[[File:EP671-674_25.png|thumb|right|Masumi hugs Conan after rescuing him in [[Detectives' Nocturne]].]]
Masumi is interested in [[Conan Edogawa|Conan]]'s abilities as a detective and has been gathering information on him and his friends. She appears to be certain that Conan is Shinichi Kudo. Despite her initial suspicious presentation, Conan felt like she wasn't a bad person and so didn't mistrust her. Conan at several points questions her if they've met before, but she denies this, once secretly thinking, "Now's not the time". The period in which such an encounter could have taken place is initially hinted to be somewhere before the three-year span of Masumi's sojourn in the United States, when she was in her preteen years.<ref name="Mang83">Manga [[Volume 83]], File 2 (874), pg 7-8: "Red Past"</ref><ref name="Mang86">Manga [[Volume 86]], File 1 (905): "The Truth Rises to the Surface"</ref>

It is later shown that she had met Conan/Shinichi ten years ago, when the Akai family had gathered on an undisclosed beach in Japan prior to Shuichi Akai joining the FBI. By chance, Shinichi and [[Ran Mouri|Ran]] had also vacationed there, and they all ended up as witnesses and investigators in a gone-awry flight attempt from a robbery. When Shinichi managed to make Shuichi laugh (something Masumi had miserably failed to achieve) with his intelligence, observation skills and some unintended jokes, Masumi, in her admiration for Shinichi, began to call him "wizard". It is quite possible that this meeting inspired Masumi to become a detective herself.<ref name="Mang92">Manga [[Volume 92]], File 2-4 (972-974): "A Chance Meeting at the Beach"</ref>

If Masumi really lived in England, instead of America, then it's possible that she saw the tennis match from the London case on TV and recognized Conan as Shinichi based on his proclamation as 'Holmes' apprentice'.

On several occasions, such as the dramatic conclusion of the [[Volume 76#Online Client|Online Client Case]], Masumi has displayed an intensely affectionate air towards Conan which somewhat transcends a mere "big sister" relationship.<ref>Manga Chapter 800: ''Online Client Case'' - "When Objects Collide"; Anime Episode 674: ''[[Detectives' Nocturne]]'' - "Bourbon"</ref> In fact, it is hinted during the [[Volume 83#Romance Novelist Murder Case|Romance Novelist murder]] and in the movie ''[[Dimensional Sniper]]'' that she may actually be entertaining a crush on Shinichi/Conan and hopes of initiating a closer relationship with him. However, the actual level of her feelings for him is yet to be publicly revealed.

==== Ai Haibara ====
Masumi has been interested in meeting [[Ai Haibara]] for yet unrevealed reasons and has been secretly gathering information on her. She also seemed to recognize [[Shiho Miyano]] in the video of her rescuing the [[Detective Boys]]. Haibara in turn feels uneasy around Masumi, especially in close contact situations though arguably it could also be due to Scar Akai's presence near Masumi.

==== Ran Mouri ====
[[File:Ran and Sera and Wave.jpg|thumb|left|180px|Ran hears sounds of rippling waves when she sees Masumi hurried away]]
Since enrolling at Teitan High, Masumi and [[Ran Mouri|Ran]] have become friends and often walk home from school together. Masumi has also declared Ran as "her type" when they first met as a sign of liking, though this ultimately led Sonoko, Conan and Ran herself to mistake Masumi for a boy.

At one point, Ran recalls having met Masumi before in the past, hearing the sound of "rippling waves" when the she sees the latter leaving, "as if some sort of magic were at work".<ref name="Mang86"></ref> It is revealed in a later story that she and Masumi had actually met 10 years before, when they were both still children, on a beach, where by happenstance she, Shinichi and the Akai family inadvertently became embroiled in the aftermath of a crime (see '''Conan Edogawa''', above).<ref name="Mang92"></ref>

==== Sonoko Suzuki ====
Since enrolling at Teitan High, Masumi and [[Sonoko Suzuki|Sonoko]] have become friends and often walk home from school together, with Sonoko describing Masumi as a popular girl who is "cheery, sociable, boyish and cute" and on top of that, a "Jeet Kune Do using detective", though she also teasingly remarks that the only thing "against Sera" is her flat chest.

==== Akai family's middle brother ====
Masumi appears to have a good relationship with her [[Akai family's middle brother|second-older brother]] and often consults him regarding information or deductions about the cases she faced, and also has a high regard of her brother's intellect, even considering the already sharp Shuichi as "strong" in contrast to her second older-brother.

==== Tsutomi Akai ====
Masumi's father died before she was born, so she never knew him. But he refer to him as 'Papa'

=== Mary Sera ===
[[ Mary]] seems very mature and cold while talking to Masumi. She also treats her more than a coworker than her daughter, as she always advises her what to do and switch hotels if any intel about Mary is leaked.She is also somehow stubborn as she declined Masumi's trust in Conan despite the latter's motive and pursuit of justice are geniune.

=== Black Organization ===

==== Rei Furuya ====
Rei first saw Masumi in Detectives Nocturne case and seemed to recognise her. They formally met in chapter 936 (Girls Band) at [[Café Poirot]]. Masumi felt like having met him and even asked him directly about that, but Rei said that was the first time they met. When Masumi talked about a friend of her brother who taught her play the guitar, Rei also seemed to know about that incident. In Masumi's flashback of that friend, a man who looked very much like Rei appeared, and Masumi once again wondered about it, to which Amuro replied that she took the wrong person.

==Speculation==
[[File:Sera Knowing Conan's Name.png‎|thumb|right|170px|Masumi mentioning Conan's name.]]
=== Masumi met Shinichi and Ran when she was younger and knows Conan is Shinichi ===
*Masumi knew [[Conan Edogawa|Conan]] and [[Ran Mouri|Ran]]'s identities before they introduced themselves. She also knew that Conan is a detective.<ref> [[Volume 73]], File 6 (768)</ref>
*Masumi seems to know that Conan is the brains behind Sleeping Kogoro. Conan seems to think that he may have met Masumi before or that she resembles someone that he knows. He believes that she got the deduction of a case wrong just so that he would reveal himself. <ref> [[Volume 73]], File 9 (771)</ref>
*Conan realizes he met Masumi before because he finds her snaggletoothed smile familiar,<ref name=845p16>Manga [[Volume 80]], File 6 (845), pg 16: "Our Territory"</ref>
*Masumi admits that she has met Conan before, but she can´t tell him until "the time" comes.<ref name=846p16>Manga [[Volume 80]], File 7 (846), pg 16: "The Magic Lock"</ref>
*Ran has met Masumi as well because Masumi's figure as she runs away reminds her of "sounds of rippling waves, as if some sort of magic were at work."<ref name=846p4>Manga [[Volume 80]], File 7 (846), pg 4: "The Magic Lock"</ref>
*Masumi, asks Conan if he once met a girl "a long time ago and could never forget [her]"<ref name=876p11>Manga [[Volume 83]], File 4 (876), pg 11: "The Romance Novelist"</ref> and gets annoyed when he says he can't recall someone like that.
*Ran has a flashback to when she saw a younger Masumi, who is wearing a bathing suit, say, "You are a wizard, right?". Ran also feels that she has met [[Mary]].<ref> Manga [[Volume 86]], File 1 (905)</ref>
*The meeting occurred 10 years ago, as mentioned by Mary.<ref> Manga [[Volume 90]], File 5 (953)</ref>
*Masumi puts on a swimsuit similar to the one in Ran's flashback in order to jog Conan's memory, which results in him remembering her in that bathing suit as well, along as three other people, assumed to be her relatives. <ref> Manga [[Volume 91]], File 11 (969)</ref>

In Chapter 771, it is revealed that she also knows Professor Agasa, although she calls him "Professor what's his name". Although this could be explained away as her talking to Conan off screen and her just not remembering Agasa's name.

=== Identity of Masumi's middle brother ===
{{main|Akai family's middle brother}}

=== The Wizard ===
In a PS, [[Akai family's middle brother|Masumi's middle brother]] asks if she "has already met the Wizard?"<ref name=861p15-16>Manga Volume 81, File 11 (861), pg 15-16: "Just like Magic"</ref> Masumi's thought reply is "You could say so..." Later, Masumi "thinks aloud" that her reason for returning to Japan is to meet the Wizard once more.<ref name=874p8>Manga [[Volume 83]], File 2 (874), pg 8: "The red past"</ref> The identity of the Wizard is still unclear.

==== Shinichi Kudo ====
Tellingly, Masumi turns towards Conan when thinking of the answer "You could say so". At this point Masumi seems to know Conan is Shinichi. If Shinichi was nicknamed "The Wizard" by Masumi and/or her brother because of what happened when he and Masumi met in the past, then the response is appropriate since she could only sort of meet with Shinichi, because Shinichi shrunk into Conan. It's possible that the event where Shinichi earned the nickname "The Wizard" was Shinichi and Ran's meeting with Masumi 10 years ago. When trying to remember Masumi, Ran specifically mentions "sounds of rippling waves, as if some sort of magic were at work."<ref name=846p4>Manga [[Volume 80]], File 7 (846), pg 4: "The Magic Lock"</ref> A "magical" incident, if it was Shinichi's doing, might have earned him the nickname. Ran has a flashback of a young Masumi saying "You are a wizard, right?".<ref> Manga [[Volume 86]], File 1 (905)</ref> Conan seems to have remembered meeting Masumi 10 years ago and is shown as a young Shinichi standing in front of a large wave.<ref> Manga [[Volume 92]], File 2 (971)</ref>

==== Someone else ====
At this point it is unlikely that the Wizard is anyone else. There is evidence that Masumi nicknamed the person who she calls Wizard, at a point in the past while Ran was nearby. If Ran was nearby, then this would have to have happened when they first met 10 years ago, meaning that the person must be someone who existed back then. The topic of the Wizard came up during a text conversation about Conan between Masumi and her middle brother, and her response to if she had met the Wizard again was "You could say so", which is more than likely implying that she is referring to Conan, and therefore Shinichi.

[[File:Akai's picture 338.PNG|thumb|right|The picture of the Detective Boys the mystery assistants captured]]
===Masumi learned about Haibara from Shuichi's picture===
Masumi initially had an interest in Haibara. This is strange because Haibara didn't exist prior to Shiho shrinking. The knowledge of Shiho should have been secret to her as well, because Shuichi Akai's infiltration of the Black Organization was a secret. If Masumi doesn't even know the details of her brother's death, why should she know about Shiho? Masumi may recognize Haibara from pictures of Conan and Haibara that Shuichi took back during the Vermouth arc. It is standard procedure in the US to send the personal belongings of the dead back to their families. If Shuichi mixed these pictures in with his own things when he took them out of his truck before meeting with Kir, it's possible they were overlooked when the FBI sent Shuichi 's things to his family. If Masumi was interested in finding out how and why Shuichi died, she would begin by researching the people in those pictures and those connected with them in hopes of finding clues.
{{clear}}


==Character popularity==
*In honor of the release of the 800th manga chapter, Shonen Sunday held a popularity poll/contest containing 91 Detective Conan characters to choose from. Masumi placed 9th overall with 292 votes.<ref>{{cite web|url=http://forums.dctp.ws/viewtopic.php?f=4&t=8024|title=Shonen magazine detective conan official poll results published [magazine pic]|date=2012-02-28|publisher=eva|accessdate=2012-02-29}}</ref>

*Masumi ranked 10th in the Digest Book 50+ poll "Best Detective Conan characters", with 107 votes.

*Masumi ranked 5th in the Digest Book 60+ poll "Cutest Detective Conan characters", with 135 votes.

*Masumi ranked 10th in the Digest Book 70+ poll "Characters you want to go on a date with", with 106 votes.

*Masumi ranked 11th in the Digest Book 80+ poll "Character you want to marry", with 281 votes.

==Name origin==
{{Nihongo|Masumi Sera's|世良・真純|Sera Masumi}} name comes from the [[wikipedia:Mobile Suit Gundam|Mobile Suit Gundam]] character {{Nihongo|[[wikipedia:Sayla Mass|Sayla Mass]]|セイラ・マス|Seira Masu}}.<ref>[[Sherry's soliloquy|Sherry's soliloquy (2012-06-17)]], Gosho was referring to the revelation that Masumi is Shuichi's sister (Manga File 821): {{lang|ja|やっぱりアルテイシアだったのね・・・}} (So it was '''Artesia'''…). Note that "Artesia" is another name of '''Sayla Mass'''.</ref> The kanji for Masumi's surname mean 'good world'. The kanji for her first name, Masumi, mean 'true' and either 'pure' or 'net.'

==Quotes==
{{cquote|Deletion. For data at least ... is an easy task to accomplish.|Masumi, on deleting a picture of Haibara from her computer, File 777 pg 16}}

{{cquote|I guess I'm a bad kid after all...|Masumi, while crying, File 814 pg 16}}

==Trivia==
*Masumi is based on [[Natsuki Koshimizu]], a tomboy detective girl turned criminal who made her first appearance in the [[Volume 54#Detective Koshien Case|''Detective Koshien Case'']]. Since Natsuki had proven highly popular, but Aoyama couldn't recycle her as a protagonist, the character of Masumi was created instead.<ref>''Shonen Sunday'' #33</ref>
*When she was young she liked to read the "[[Night Baron]]" series, so she is fan of [[Yusaku Kudo]].
*Her catchphrase, "Case Closed" (said in English), is likely a reference to the English-language name of Detective Conan.
*Masumi owns an [[Vehicles_in_Detective_Conan#Sera's Yamaha_Artesia_XT400|Artesia XT400]].
*In File 859, Masumi reveals that she has a second-older brother and that her oldest brother taught her Jeet-Kune-Do.
*Masumi speaks Queen's English.<ref>[[:File:Postcard2015 1.jpg]]</ref>

==In other languages==
{{BeginTable CharLang}}
{{OtherLangItem|flag=Japan|Japanese|真純 Masumi|世良 Sera}}
{{OtherLangItem|flag=Arab League|Arabic|ماسومي Māsūmi|سيرا Sēra}}
{{OtherLangItem|flag=France|French|Masumi|Sera}}
{{OtherLangItem|flag=Mexico|American Spanish|Masumi|Sera}}
{{OtherLangItem|flag=Brazil|Brazilian Portuguese|Masumi|Sera}}
{{CharLangItem|flag=Italy|Italian|Masumi|Sera}}
{{CharLangItem|flag=North Korea|flag2=South Korea|Korean|세라 Sera|양 Yang}}
{{OtherLangItem|flag=Thailand|Thai|มาสึมิ Mās̄ụ-mi|เซระ Sera}}
{{EndTable}}

==See also==
* [[Characters]]
* [[Akai family]]

==References==
<references />

{{DEFAULTSORT:Sera Masumi}}
[[Category:Characters]]
[[Category:Female characters]]
[[Category:Detectives]]
[[Category:High school detectives]]
[[Category:High school students]]
[[Category:Martial artists]]
[[Category:Characters who know Conan's identity]]
[[Category:Characters named after Mobile Suit Gundam characters]]
[[Category:This page has images with hideous anime aggregate site watermarks]]
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Template:Rum arc

2017-03-20T19:02:54Z

8627937131f701a286774c43a25313a3:

{|style="clear: both; background-color:#F8F8F8; border: 1px solid #a6a6a6; width:100%; margin: 8px auto 0px;" class="bonav collapsible"
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! colspan="3" align="center" style="background-color:#a05836; font-size:95%; padding: 1px 5px 1px 8px;" | <div class="noprint plainlinks navbar" style="float: left; width:6em; text-align:left; font-weight: normal; font-size: xx-small; color: #ffffff;">[[:Template:Rum arc|v]] • [[:Template_talk:Rum arc|d]] • [{{fullurl:Template:Rum_arc|action=edit}}e]</div> '''[[Rum|Rum arc topics]]'''
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| width="120" align="right" style="width: 100px; font-size:90%; background-color:#C0C0C0; padding-right: 5px;" | '''Main interest''' || style="padding-left: 5px; font-size:90%;" | [[Rum]] • [[Case from 17 years ago]]
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| width="120" align="right" style="width: 100px; font-size:90%; background-color:#C0C0C0; padding-right: 5px;" | '''Potential suspects''' || style="padding-left: 5px; font-size:90%; background: #F0F0F0;" | 
[[Hyoue Kuroda]] • [[Rumi Wakasa]] • [[Kanenori Wakita]] • [[Mary Sera]]

 [[Taka'aki Morofushi]] • [[Sakurako Yonehara]] • [[Shukichi Haneda]] • [[Chikara Katsumata]]

 [[Kiyonaga Matsumoto]]

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| width="120" align="right" style="width: 100px; font-size:90%; background-color:#C0C0C0; padding-right: 5px;" | '''Connections''' || style="padding-left: 5px; font-size:90%;" | [[Kohji Haneda]] • [[Asaka]] • [[Amanda Hughes]] • [[Tsutomu Akai]]
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| width="120" align="right" style="width: 100px; font-size:90%; background-color:#C0C0C0; padding-right: 5px;" | '''Related Articles''' || style="padding-left: 5px; font-size:90%; background: #F0F0F0;" |[[APTX 4869]] • [[List of Black Organization related characters#APTX 4869 Victims|APTX 4869 Victim list]] • [[Timeline#Rum arc (Manga: 899-???, Anime: 784-???)|Rum arc timeline]]
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| width="120" align="right" style="width: 100px; font-size:90%; background-color:#C0C0C0; padding-right: 5px;" | '''Cases of interest''' || style="padding-left: 5px; font-size:90%;" | [[The Scarlet Return]] • [[Three First Discoverers]] • [[Volume 90#The Clenched Scissors and the Clipped Letters|Haneda Kouji's death case]] • [[Volume_90#Soul_Detective_Murder_Case|Soul Detective Murder Case]] • [[Volume 90#A song named ASACA|A song named ASACA]]
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This template meant to be put on the bottom of pages related to the rum arc. This template is mainly supposed to be useful while the arc is in progress to link related topics and keep suspect lists updated. Most importantly, it should acquire new categories as various points of interest and lines of inquiry by Conan develop. It may not be useful after the reveal. Mark spoilers to the RUM arc please.

[[Category:Navbox templates]][[Category:Templates]][[Category:Black Organization]]</noinclude>

Masumi Sera

2017-03-20T18:55:07Z

8627937131f701a286774c43a25313a3: /* Appellations */

{{FeaturedArticle|March 23, 2011}}

{{SpoilerWarningArticle|This article contains significant '''[[Glossary#Spoiler|spoilers]]''' about major events concerning this person. It is likely you will be spoiled if you have not read all the manga released to date. To find out what pages will be safe for you to read, please consult our [[Glossary#Spoiler|wiki spoiler policy]].}}

{{InfoBox Char
| name = Masumi Sera
| japanese-name = {{lang|ja|世良真純}} (Sera Masumi)
| english-name =
| image = Masumi_Sera_Profile.jpg
| age = 16-17? 
| gender = Female
| date-of-birth =
| occupation = Teitan High School Student Detective
| relatives = [[Tsutomu Akai]] (father, deceased) [[Mary Sera]] (mother) [[Shuichi Akai]] (older brother) [[Shukichi Haneda]] (second-older brother)
| nicknames =
| first-appearance = Manga: [[Volume 73|File 768]] Anime: [[Deduction Showdown at the Haunted Hotel|Episode 646]]
| appearances = {{:Masumi Sera Appearances}}
| keyhole = [[Volume 73]]
| japanese-voice = [[Noriko Hidaka]]<ref>{{cite web|url=http://combination.jp/blog/2012/02/post-383.html|date=2012-02-01|accessdate=2012-02-01|title=新しいお仕事 | Blog | コンビネーション|publisher=combination Co.Ltd.|author=Noriko Hidaka}}</ref>
| cases-solved = 5
| footnotes =
}}
'''{{nihongo|Masumi Sera|世良真純|Sera Masumi}}''' is a high school detective in the manga and anime franchise ''[[Detective Conan]]''. She is the younger sister of [[Federal Bureau of Investigation|FBI]] agent [[Shuichi Akai]] and a practitioner of the martial art [[wikipedia:Jeet Kune Do|Jeet Kune Do]].

== Background ==
Masumi Sera is a high school detective and the younger sister of [[Federal Bureau of Investigation|FBI]] agent [[Shuichi Akai]]. She is the only daughter of [[Tsutomu Akai]] and [[Mary]]. 17 years ago, her father, before he disappeared, instructed his family to hide in Japan, where Masumi later was born. Her oldest brother had prior to her birth left Japan to study in America, so they first got to meet each other when Masumi was six-seven years old. Although she grew up in Japan during her elementary school years, she moved abroad three years ago with her mother, presumably due to Shuichi infiltrating the [[Black Organization]]. She has recently returned to Japan for some unknown reason. After meeting Conan, Ran, and Sonoko during a case, she transfers to [[Setting#Teitan High School (帝丹高校)|Ran's high school class]]. Masumi is skilled at [[Wikipedia:Jeet Kune Do|Jeet Kune Do]], a hobby encouraged by her brother Shuichi who mailed her instruction videos while in elementary school. She can fight on the same level as [[Ran Mouri|Ran]]. She seems to know that Conan is Shinichi and implies that she met Ran and Shinichi sometime in their past. Currently she is living with [[Mary]], whom she calls "Mama", at a hotel. She claims that she is provided for by a rich friend of her late father, but it hasn't been revealed who it is. Every time they encounter the possibility of information on Mary getting out, they end up moving to a new hotel under Mary's order. While Masumi is eager to seek help from Conan, Mary is skeptical of him.
She also has another older brother, and the three siblings has different last names. Sera is supposedly her mother's maiden name.

==Personality==
[[File:691-15.png|thumb|Masumi beats a gangster in [[Yusaku Kudo's Cold Case]]]]

Masumi has a cheery, sociable, boyish personality<ref>Manga Volume 73, File 9, Page 3, "Let's hear your brilliant deduction!"</ref> and is well liked by her classmates at Teitan High. On their first meeting, Masumi fails to correct Sonoko's mistaken impression that she is a man and even makes it worse by declaring that Ran is "[her] type".<ref name=pronouns>The Japanese pronoun used is gender neutral and can refer to either males or females.</ref> Her rather boyish appearance - especially in relation with her flat chest - is a bit of a touchy subject to Masumi, who claims that her mother's bust size is rather well developed and keeps expressing her hope that someday her own chest size will similarly change for her.

Masumi is quite quick-minded, coming up with clever plans and adapting them to sudden changes rapidly. Masumi seems to be prone to dramatics like most detectives are, but perhaps to a lesser degree than [[Shinichi]] or [[Heiji]] as she bluntly says who the criminal is without preamble. On the other hand, Masumi is tough to the point that she is willing to risk all to achieve a successful conclusion of a case. In one instance, she purposefully lured a hostage-taker into a sniper's sight with a smile, hoping he would be shot without showing any apprehension about his possible demise.

Although she has crime scene experience<ref name=769p3>Manga Volume 73, File 7, pg 3: "A Detective Just Like You, Little Boy"</ref>, Masumi seems to be less skilled as a detective than Shinichi or Heiji, apparently missing a critical clue that was necessary to understand how the murderer's setup worked, although Conan opines that Masumi purposely made an error in order to test him. In some degree, she seems to like rivalry or contests to see who is the winner.

Sera's catchphrase upon the conclusion of a case is "case closed".

Sera shows a protective and caring side towards Conan, as seen in the Detectives Nocturne and in the beginning of the Red Woman case when she helps Conan up after falling, as well as having it made clear in the Haunted Hotel case that she was also clearly investigating Conan before they first met, as she knew he was a detective. Its likely to believe that them being on the same bus was not an accident, which could even lead to be argued that she somehow hinted to them about the cake buffet so they would be on the same bus as her. It is safe to assume though she was, and possibly still is, investigating Conan.

Sera's way of referring to her parents as 'Mama' and 'Papa' indicates a privileges background.

== Appearance ==
[[File:Sera_transfers.png‎|thumb|Masumi transfers to Teitan High School]]

At first, she wears a grey fedora that used to belong to Shuichi Akai and a dark jacket which gives her an androgynous appearance. When she transfers to Teitan High, she gets rid of her fedora and wears female clothing. Her hair is dark, wavy, and short; it doesn't even touch her shoulders. Even then, she is rather tomboyish; Genta mistakes her for a man, and Sonoko comments she has a petite figure. Later, Genta, Mitsuhiko and Hattori comment that her bosoms are rather small. Masumi also has an uneven tooth that shows when she smiles.

Masumi and her brother Shuichi presumably more closely resemble their mother than their father.
{{clearleft}}

==Appellations==
<tabs jsId="nicknames">
<tab title="Protagonists">
{{appellations/head|Masumi}}
{{appellations|Conan Edogawa|Sera-san Sera-no-nēchan Sera Sera Masumi<ref name="file930">[[Volume 88#A Killer in Ramen Ogura|File 930 (Volume 88)]]</ref> [[Shuichi Akai|Akai-san]]'s younger sister (''Akai-san no imōto'')|Conan-kun Edogawa Conan-kun<ref name="file771">[[volume 73#Bomber's Request|File 771 (Volume 73)]]</ref> Boy (''Bōya''; first time) Wizard (''Mahō-tsukai'')}}

{{appellations|Shinichi Kudo|Sera Masumi (movie introdcution)<ref name="m18">Movie 18: ''[[Dimensional Sniper]]''</ref>|Kudo-kun Shinichi-kun Kudo Shinichi-kun<ref name="ep690">[[Yusaku Kudo's Cold Case|Episode 690]]</ref>| Kudo Shinichi}}

{{appellations|Ran Mouri|Sera-san Sera Masumi-chan<ref>File 778</ref> Sera-chan|Ran-chan Ran-kun}}

{{appellations|Kogoro Mouri|Tomboy-ish Girl|Kogoro-san Poiro-san ([[Hercule Poirot|'''Poiro'''t]] + Kogo'''ro''')<ref>[[Volume 78#Mystery Train|File 820 (Volume 78)]]</ref> Sleeping Kogoro-san (''Nemuri no Kogoro-san'')<ref name="file771" />}}
|}
</tab>
<tab title="Friends & relatives">
{{appellations/head|Masumi}}
{{appellations|Tsutomu Akai|-|Papa}}

{{appellations|Mary Sera|Masumi<ref name="file953">[[volume 90#Soul Detective Murder Case|File 953: As If Connecting with a Demon in the Darkness (Volume 90)]]</ref>|Mama<ref name="file953" /> The little sister from outside the domain (''ryōiki-gai no imōto'')}}

{{appellations|Shuichi Akai|Masumi|Shu-nii Oniichan<ref name="file972" /> Aniki<ref name="file936">[[Volume 88#Girls Band Murder Case|File 936]]</ref> Akai Shuichi<ref name="file938">[[volume 89#Girls Band Murder Case|File 938: The Crime in the Blind Spot (Volume 89)]]</ref> Ani<ref name="file859">[[volume 81#Bumper Brawn|File 859: Jeet Kune Do vs. Karate (Volume 81)]]</ref>}}

{{appellations|Subaru Okiya|Sera Masumi-san<ref name="file954">[[Volume 90#Bourbon's Mission|File 954: Sanction of the Betrayal (Volume 90)]]</ref> Sera-san<ref name="file954" />|Subaru}}

{{appellations|Shukichi Haneda|Masumi<ref name="file972">[[volume 92#A Chance Meeting at the Beach|File 972 (Volume 92)]]</ref>|Kichi-nii ([[Gosho Aoyama|Gosho]]'s thought)<ref>[[:File:AChint8-06-2014_4.JPG]] (Sera-chan calls him Kichi-nii)</ref> Kichi-niichan<ref name="file972" /> Aniki Chukichi (talking to [[Yumi Miyamoto|Yumi]])<ref>[[Volume 88#A Killer in Ramen Ogura|File 929 (Volume 88)]]</ref>}}

{{appellations|Sonoko Suzuki|Sera-san Sensei (once) Sera-chan Female High-School Detective (''JK Tantei'')<ref name="file938" /> Sera Masumi-san<ref name="file859" />|Sonoko-chan Sonoko-kun}}

{{appellations|Heiji Hattori|Female detective (''onna-tantei'')|Hattori-kun}}

{{appellations|Kazuha Toyama|-|The girl with the ponytail}}

{{appellations|Katsumasa Ogura|Mari-chan<ref name="file930" />|Taisho<ref name="file930" />}}
|}
</tab>
<tab title="Law enforcement">
{{appellations/head|Masumi}}
{{appellations|Juzo Megure|Female High-School Detective (''Jōshi-Kōsei Tantei'')|Inspector-san (''Keibu-san'')}}

{{appellations|Wataru Takagi|Sera-kun|Detective Takagi (''Takagi-keiji'')<ref>[[Volume 86#Poolside Case|File 905 (Volume 86)]]</ref>}}

{{appellations|Andre Camel|-|"FBI Guy"}}

{{appellations|Ginzo Nakamori|Boy (''Bōzu'')<ref name="file828">[[Volume 78#The Blush Mermaid|File 828 (Volume 78)]]</ref>|Inspector-san (''Keibu-san'')<ref name="file828" /> Inspector (''Keibu'')<ref name="file828"/>}}

{{appellations|Rei Furuya|-|Amuro-san<ref name="file937">[[Volume 88#Girls Band Murder Case|File 937]]</ref>}}

{{appellations|Scotch|-|Scotch<ref name="file937" /> [[Shuichi Akai|My brother]]'s friend (''Aniki no yūjin'')<ref name="file936" /> The friend (''sono yūjin'')<ref name="file936" />}}

{{appellations|Jugo Yokomizo|Young girl (''wakai no'')<ref name="file858">[[volume 81#Steamy Relations|File 858: A Problematic Deduction (Volume 81)]]</ref>|Inspector-san (''Keibu-san'')<ref name="file858" />}}
|}
</tab>
<tab title="Detective Boys">
{{appellations/head|Masumi}}
{{appellations|Ai Haibara|Sera Masumi<ref name="m18" />|Haibara Ai}}

{{appellations|Ayumi Yoshida|Onēsan<ref name="m18" />}}

{{appellations|Hiroshi Agasa|-|Professor Agasa (''Agasa-hakase'')}}
|}
</tab>
<tab title="Others">
{{appellations/head|Masumi}}
{{appellations|Yusaku Kudo|-|Kudo Yusaku<ref name="ep690" />}}

{{appellations|Yukiko Kudo|Sera<ref>[[Volume 78]], File 6</ref>|-}}

{{appellations|Scar Akai|Masumi<ref name="MT">[[The Jet-Black Mystery Train]]</ref>|Shu-nii<ref name="MT" /> Acquaintance (''shiriai'')}}

{{appellations|Makoto Kyogoku|-|Master of Karate (''Karate no Tatsujin'')}}

{{appellations|Kohji Haneda|-|Haneda<ref>[[volume 90#Soul Detective Murder Case|File 952: In the Suspicious Next Room (Volume 90)]]</ref> Haneda Kohji<ref name="file953" />}}

{{appellations|Asaka|-|Asaka<ref name="file953" />|file=Asaka manga.jpg}}
|}
</tab>
</tabs>

==Plot overview==
=== Masumi's Introduction (Manga: [[Volume 73#Jeet Kune Do|768 - 770]], Anime: [[Deduction Showdown at the Haunted Hotel|646 - 647)]] ===
[[File:Sera_Kick.png|thumb|right|Masumi defends herself from Ran.]]
Masumi first met [[Sonoko Suzuki|Sonoko]], [[Ran Mouri|Ran]], and [[Conan Edogawa|Conan]] on a bus after she was mistaken for a [[Wikipedia:Groping|groper]]. After Sonoko declared Masumi was the groper, Masumi and Ran got into a fight, with Masumi's Jeet Kune Do holding even against Ran's karate. Conan and Masumi cleared up the misunderstanding by pointing out the real groper. Sonoko then mistook Masumi for a boy, an impression which wasn't helped by Masumi declaring that Ran was "his type".<ref name=pronouns/> Masumi and Ran both discovered they were heading to the same hotel, about which Conan is less than pleased.

Masumi finds out the hotel she is staying at doesn't have a room available and complains at the front desk. A man then falls into the parking lot and dies. Conan runs to the source of screaming while Masumi told the guard to watch the elevators before running to the roof. She immediately declares the crime to be a murder, giving her reasoning. She then reveals her name, Masumi, that she is a detective, and knows Conan is a detective as well. She also revealed before she knew Conan's name despite it not being mentioned in front of her, revealing that Masumi has been investigating Conan for awhile now.

[[Juzo Megure|Inspector Megure]] is not pleased to have another high school detective underfoot but lets Masumi and Conan investigate regardless. After listening to the suspect testimony, police observations, and examining the crime scene, Masumi announces that she has solved the case.

However, Masumi's deduction leaves out a critical detail; Conan is therefore forced to use Shinichi's phone to call his own, give Inspector Megure Conan's phone, and speak through Shinichi's as Shinichi using the voice-changer bow tie. Shinichi figures out the detail that had Masumi stumped, although a look she gives Conan as he runs off suggests her omission was possibly intentional, and once during the phone conversation she tries to trick Shinichi into admitting that he is physically present at the crime scene instead of being explained the details by Conan and Megure.

The following day, Masumi transfers to Teitan High School, surprising both Ran and Sonoko. She was rather popular at school surrounded by students asking her questions about herself.

===Kogoro Detective Agency Hostage Crisis (Manga: [[Volume 73#Bomber's Request|771]]-[[Volume 74#Bomber's Request|774]], Anime: [[Hostage Situation at the Mouri Detective Agency|648 - 650]])===

====Let's hear your brilliant deduction! (771)====
According to Sonoko, Masumi has become very popular at Teitan high for being "cheery, sociable, boyish, and cute...and on top of that, she is a jeet kun do-using female detective!"<ref>Manga Volume 73, File 9, Page 3, "Let's hear your brilliant deduction!"</ref> One classmate compares her to [[Shinichi Kudo]] who has been taking a break from school. Masumi tells inquiring classmates that she has been staying in America with her parents since three years ago, but "rebelled" because she would rather live in her Japan where she was born and raised. She sneaks up behind Sonoko and Ran after school because she wanted to speak to Conan at the Mouri Detective Agency. At the agency, Masumi is unhappy to hear that Conan and the rest of Detective Boys are staying at Agasa's house and will be camping the following day. She settles for asking Kogoro if Conan is always at his side when he solves cases, hinting that she suspects Conan is the real brains behind "Sleeping Kogoro".

[[File:Sera_slide_kick.png|thumb|left|Masumi sweeps out the Hostage Taker's legs]]
Just as Masumi is about to walk out the door, three female mystery writers and a man enter the agency. After a moment of confusion, the man suddenly fires a gun into the roof and takes the detective agency hostage. His demands are that Kogoro figure out which of the three writers killed his sister at a ryokan one month ago. The quick thinking Masumi sidles up to Ran and tells her to go for the man's gun after she takes his legs out. Sera's leg sweep sends the man to the floor, and Ran removes the gun from the man's hand with a kick; however, Masumi leaps back when the man reveals he has bombs strapped around his chest and will detonate them if they try to stop him.

Meanwhile at Agasa's, Haibara is angry that Conan used Shinichi's voice to solve a case around the suspicious Masumi. Conan's response is that Masumi is familiar somehow, like they have met before or she looks like someone, and Conan feels she isn't an enemy. Genta and Mitsuhiko told Conan they saw a high school student walking home with Ran, so the jealous Conan calls Ran's cellphone to hear about it from her.

The hostage taker man orders Ran to answer her phone, but Masumi snatches the phone away and says hello to Conan (who is shocked that Masumi is with Ran). Masumi then tricks the hostage taker and keeps the line connected so Conan can listen in by closing Ran's [[Yaiba#Characters|Sea Cucumber Man]] cellphone strap in between the screen and keypad of the the flip phone.

====Nickname Rules (772)====
Masumi asks a few insightful questions about the case; however the hostage taker man discovers Ran's phone is still connected. Under gunpoint, Masumi steps in front of Ran and takes the blame, but Conan, using Shinichi's voice, says he ordered Ran to do it. Masumi is mystified by why Shinichi is now on Conan's phone. Masumi meanwhile spots a glint of light across from the detective agency and declares that the case will come to an end without Shinichi's help.

====Possible Sniping (773)====
[[File:Sera773.png|thumb|right|Masumi surprised by Ran's attitude.]]
Masumi explains to Ran that she secretly kept the call to Conan connected so he could call the police and research into the case. While Masumi is still surprised that Shinichi was on the other end of the line instead of Conan, she had initially hoped that Shinichi would somehow be able to talk down the would-be-murderer. She suspects that Shinichi has already figured which one of the suspects is the murderer in the ryokan case, but Shinichi is unable to reveal the truth because the hostage taker would then kill the named culprit and then himself. Sera's plan changed when she noticed the lights from the police snipers on the building across from Mouri Detective Agency. She explains to Ran in detail the names and functions of the various police divisions responsible for hostage situations, and tells Ran in a roundabout fashion that this situation will end with the hostage taker being killed by the police.

Masumi launches a plan to bring the hostage taker into the snipers' range by telling him he should charge Ran's phone battery. Ran foils Sera's intentions by shutting the curtains, blocking the snipers' shot. To Masumi's utter astonishment, Ran tells her that she doesn't want to see anyone die in front of her and declares that "Shinichi won't allow anyone to die. He absolutely wouldn't!"<ref>Volume 73, File 11, page 13, "Possible Sniping." Shinichi then begins to present his deductions over the phone and Masumi wonders how he will manage to resolve this situation without bloodshed.</ref>

====The book with unturned pages (774)====
Masumi and Ran take the opportunity to disable the hostage taker when he loses his composure and grip on the detonator after Shinichi tricks him into believing his sister committed suicide. Masumi yells for the waiting bomb squad to secure the area. With the hostage taker arrested, Shinichi then reveals the true culprit. Masumi realizes the mistake in her deduction and explains the correct timeline of events before the murder. Sometime soon after the conclusion of the case, Masumi, walking with Ran and Sonoko speculates aloud that there must be some reason Shinichi left Agasa's before Ran could meet him there. She then exclaims that "due to what just happened, she really gets it", that Conan and Shinichi are on very good terms with one another, and that Ran "is tougher than Masumi thought". Conan isn't sure what to make of these last comments.

===Video Site (Manga: [[Volume 74|775-777]], Anime: [[The Professor's Video Site|656-657]])===
[[File:Ai image.png|thumb|Masumi deletes Haibara's image]]

Masumi stops [[Genta Kojima|Genta]] and [[Mitsuhiko Tsuburaya|Mitsuhiko]] outside of [[Hiroshi Agasa|Agasa]]'s house to ask them if they are acquaintances of Professor Agasa. The topic of [[Shinichi]] comes up when she talks to Mitsuhiko and Genta about the prior hostage case. Mitsuhiko mentions that [[Ai Haibara|Haibara]] told them to keep Shinichi's involvement secret. After asking about Haibara, Masumi mentions that she saw Haibara in one of the professor's online videos. Next, Masumi asks who is currently living in the Kudo house because she saw the curtains shift slightly. The Detective Boys tell her that [[Subaru Okiya]] has been staying there since his apartment burnt down. Masumi cryptically comments with a smirk on her face, "And here I thought that someone had just settled in without permission...But it seems I was just getting worked up over nothing..." while looking up at where Subaru is hiding.

At the end of the case, Masumi is in her hotel room deleting various files. One of her deleted files was a still image from Agasa's video blown up to show Haibara reflected in Agasa's glasses. This indicates that she is not only keeping an eye on Conan but also on Haibara.
"Delete... Delete... For data, at least is an easy task to accomplish...", were her words while she was doing it.

===East vs. West Rematch (Manga: [[Volume_74#East_vs._West|778-780]], Anime: [[Conan vs. Heiji, Deduction Battle Between the Detectives of the East and West|651]])===
[[File:Sera FBI.png|thumb|left|Masumi thinks about the FBI]]
The case opens with Ran talking to Masumi about [[Heiji Hattori]] who is stopping by for a visit. Masumi is curious whether Heiji or Shinichi is the better detective. After Heiji is introduced to Masumi, Kazuha then calls Heiji and tells him that she is stuck at a restaurant because someone died and a foreigner [[Andre Camel]] is keeping everyone from leaving. Masumi proposes Heiji and Shinichi (via Conan's cellphone) have a deduction match. At the crime scene, Masumi becomes curious about the foreigner, Camel who secured the area. The police and Conan reveal Camel is an [[Federal Bureau of Investigation|FBI]] agent and Masumi takes interest. Meanwhile, Camel finds that Masumi looks familiar, but can't quite place why. He takes a picture of her and mails it to [[Jodie Starling|Jodie]] and [[James Black]] who are waiting outside. Jodie and James think Masumi resembles someone too, but only James Black correctly identified Masumi as female.

Meanwhile Masumi is busy helping with the case, asking questions and making comments about various deductions. Heiji nearly slips up with Conan's identity in front of her earning a pointed question from Masumi, but Heiji rescues himself by saying he thinks of Conan as Kudo when Conan gets smug have hearing Shinichi's deductions over the phone. Masumi doesn't seemed to be fooled though, her thoughts show that she seems to know Conan, not Shinichi, is the one solving the case while watching Conan come to his final conclusion.

===EYE (Manga: [[Volume_74#Eye_for_an_Eye|781]], Anime: [[The Design of Poison and Mirage|652]])===
Conan, Heiji, Masumi, and the rest of the group return to the Mouri Detective Agency after the poisoning case at Danny's restaurant. Heiji reveals the case that brought him to Tokyo; he received a mysterious letter signed in the name of a person who was murdered in Karuizawa requesting an investigation. Masumi takes an immediate interest in the case and wants to tag along, but Heiji refuses saying that the people he is visiting are only expected five people. Masumi is peeved at being left behind.

===Kogoro-san is a Good Man (Manga: [[Volume 75|787]], Anime: [[Kogoro-san is a Good Man|661]])===
Masumi is walking with Conan, Ran and Sonoko. While they wonder why Kogoro has been coming home late, Sonoko thinks he's found himself a mistress. Masumi thinks that he is just investigating a case. When an old lady named Takae Kiritani comes, she claims that Kogoro has been helping her. Masumi asks what he does for her to which she replies that its small things like helping around the house. Masumi isn't seen again for the rest of the case.

===Murder at Mouri Detective Agency (Manga: [[Volume 76|797-800]], Anime: [[Detectives' Nocturne|672-674]])===
[[File:Sera's motorcycle.jpg|thumb|right|Masumi in her motorcycle.]]
During a murder case at Mouri Detective Agency, after meeting Kogoro's new apprentice [[Rei Furuya|Tooru Amuro]], [[Juzo Megure|Megure]] comments that the number of detectives around Kogoro has increased again, referring to Masumi. Amuro takes interest in Masumi. Later, Kogoro and friends go over to a suspect's apartment. Masumi calls Ran after hearing about the murder on the news because she is worried about her and Conan. The call has an usual amount of static which alerts Amuro that there are listening devices present. Amuro abruptly hangs up Ran's phone on Masumi. Meanwhile, Conan intentionally gets himself kidnapped by the primary suspect. After Ran enables calling again, Masumi calls back immediately and is very upset because she was worried something had happened to Ran. Ran tells her that Conan has been kidnapped, and details to Masumi the murder at Kogoro's agency. In order to figure out where the kidnapper is headed, Kogoro and Amuro search the apartment and decide to go to the address of one of the other suspects.

Masumi arrives at suspect's home on [[Cars|her motorcycle]], but just misses Kogoro and the gang leaving. She hears the elevator descending and rushes back downstairs in time to follow Amuro's [[Cars|car]]. Meanwhile, the culprit has been driving around with Conan while Haibara has been directing Okiya's car towards them using the criminal tracking glasses. Okiya catches up to the kidnapper and relays what the car looks like to Kogoro. Amuro sees the suspect's car heading in the opposite direction so he quickly wheels around after it. Masumi, who has been following Amuro's car this whole time, u-turns after Amuro and continues chasing. Amuro gets in front of the suspect's car and stops it. The suspect gets out of the car holding Conan at gunpoint, but Masumi drives up onto the roof of the car. She swings her motorcycle around so that the rear wheel slams into the woman's face knocking her unconscious. With tears of relief, Masumi hugs Conan, happy he is safe. Amuro, Okiya, and [[Vermouth]] look on.

===Meeting with Scar Akai (Manga: [[Volume 76|801]], Anime: [[Won't Forgive Even One Millimeter|675]])===
[[File:Sera_675.jpg|thumb|left|220px|Masumi looking for Scar Akai.]]
Masumi is walking with Sonoko and Ran, and Ran is talking by phone with Conan. Masumi hears Haibara's voice in the background and becomes curious. She asks the two others what Haibara is like, and Sonoko says Haibara is like a woman in a child's body.

When Ran hangs up her cellphone, the topic switches over to [[Rei Furuya|Amuro]]. Masumi says to Ran she wants to meet Amuro because she never got a really good look at him from the last case, but Sonoko thinks she wants to meet Conan, instead. Ran says Shinichi and Conan are big fans of Sherlock Holmes. Masumi thinks about that she has known that for a long time.

Suddenly, Masumi sees [[Scar Akai]] in the crowd ahead. She runs after him, but she can't catch him. Ran wonders who Masumi was chasing, but Masumi replies she thought it was someone she knew, and silently appends in her mind that it would be impossible for the man she was chasing to be the person she thinks it was.

[[File:690-3.png|thumb|Masumi is shocked to see Subaru]]
===Yusaku Kudo's Cold Case (Manga: [[Volume 77|812-814]], Anime: [[Yusaku Kudo's Cold Case|690-691]])===
Masumi meets [[Subaru Okiya]] at Shinichi's house and she finds him suspicious. She began to think there is a woman at Kudo's house because there are a hair elastic, lipstick in a glass and a long hair in the sink trap. After that, all of them solved a case together that is similar to a case that Shinichi Kudo's father dropped out 10 years ago. It was revealed to be a theft case. Both Subaru and Masumi had got more suspicious of Conan and the identity of Shinichi Kudo. At the end, when the criminals were knocked, she saw Ran and Conan and she thought she was a 'bad kid', after all.

===Gunma Campground's Cabin Trap (Manga: [[Volume 77|815-817]], Anime: [[The Shadow Approaching Haibara's Secret|699-700]])===
[[File:Masome.png|thumb|left|120px|Masumi at the campground]]
She went camping when she meets Professor Agasa and Conan. The Detective Boys were lost. Masumi and Conan found the two policemen finding the corpse. After she and Conan solved the case, she and Conan rushed towards the burning cabin. Conan and the Detective Boys were talking about how they got safe. Mitsuhiko pointed the way were their savior went. Masumi then began to ask what kind of woman is their savior. She seemed to be surprised when she saw her on Mitsuhiko's cell phone.
{{clear}}
[[File:new-sera.png|thumb|left|150px|Masumi leans in to get a good look at Haibara]]
[[File:Sera is akai sister.jpg|thumb|right|200px|Masumi is revealed to be Shuichi's sister.]]

===Mystery Train (Manga: [[Volume 78|818-824]], Anime: [[The Jet-Black Mystery Train|701-704]])===
Masumi finally meets Haibara, and Haibara has a bad feeling about her (although it could have been due to Scar Akai spying on them from behind the door just then). Later when a murder occurs on the Bell Tree Express, she and Conan investigate. Masumi takes a video recording of the suspects running so she can show it to the detective boys in order to ask them which one had the closest gait to the masked suspect from earlier, but she is intercepted first by Scar Akai in the hallway. She stops and angrily asks him who he is. Scar Akai simply replies that she hasn't changed, reveals his face to her, and refers to her by her first name, "Masumi". In her shock Masumi calls him "Shu-nii", signifying that Shuichi is Masumi's older brother. She questions Scar Akai about what happened, saying that she heard he had died. Scar Akai then tasers her unconscious, stating that he was hoping for that response. Scar Akai later is revealed to be Vermouth in disguise, explaining why he attacked Masumi.

===The Blush Mermaid Heist (Manga: [[Volume 78|828]]-[[Volume 79|830]], Anime: [[Kaitou Kid and the Blush Mermaid|724-725]])===
[[File:SeraHat.jpg|left|thumb|200px|Masumi is relieved that she has got her hat back.]]
Masumi accompanies Conan, Ran, and Sonoko to the location of Kaitou Kid's next heist: a museum where the Blush Mermaid, a gem adhered to the shell of a turtle as a last ditch effort by a an Italian actress in an accident at sea to save her turtle by encouraging someone to rescue it. Before checking out the museum, Masumi asks Ran if she saw a [[Scar Akai|strange man in black]] when she found the hat on the Belltree Express. After the group arrives at the room where the turtle is being held in a large aquarium, [[Ginzo Nakamori|Inspector Nakamori]] pulls Masumi's face to see if it is a mask worn by Kid. Annoyed by Nakamori's mistaken gender assumption and having her face pinched, Masumi knees him in the privates ostensibly to prove he isn't Kid. Masumi then runs off to the bathroom. Later, when Kid makes his move, Masumi is one of many caught in his trap: the rug on the floor is pulled up by strings so that it pins everyone standing on it to the front of aquarium. As soon as the rug drops, everyone sees the tank is empty except for a card left by Kid. This leaves Conan and Masumi quite dumbfounded as to how Kaitou Kid could have removed the turtle. Later, Conan reveals that Masumi is really Kaitou Kid, and he had made a critical error in his acting by assuming Masumi was a male. Kaitou Kid had locked the real Masumi bound and gagged in the men's bathroom after knocking her out with a stun gun. Upon gaining consciousness, Masumi escapes her bonds, rushes out of the bathroom, and gives a still disguised Kid a fierce kick to the face. After Kid escapes (due to Ran distracting Masumi by pointing out that everyone can see her underwear), Masumi is relieved that she at least managed to recover her hat, which she thinks is special because it somehow has the same feel as her brother Shuichi Akai's hat.

=== Cooking Show Murder (Manga: [[Volume 80|844-846]], Anime: [[The Treasure Chest Filled with Fruits|727-728]])===
[[File:SeraSmile.jpg|right|thumb|150px|Masumi is smiling and blushing when Conan asks her if they had met each other before.]]
Conan, Ran, Sonoko, Kogoro and Masumi go to a live cooking show. Conan wants to ask something important to Masumi, but a murder gets in his way. While solving the case, Ran realises that Masumi and her might have met each other before, since Ran thinks of waves in the beach each time Masumi gets away. At the end of the case, Conan asks Masumi if they had met each other before. Masumi smiles and says she doesn´t know, but actually she thinks "Of course we have, but I can´t tell you until the time comes..."

===Adultery Investigation (Manga: [[Volume 81|856-858]], Anime: [[Bathroom Where Ran Collapsed As Well|740-741]] )===
[[File:SeraCall.png|left|thumb|150px|Masumi is calling her brother on the phone.]]
After being hired by a classmate, Keiko Kitao, Masumi is investigating to see if the boyfriend of Keiko's sister has fully committed to their relationship. However, as the atmosphere is rapidly changed by the murder, Masumi and Conan start to investigate the crime scene. When Conan has finally deduced who the culprit is, he also observes Masumi making a call with someone saying "...Say, my deduction... It's not wrong, is it?". Upon solving the case, Eri states having seen Masumi talking to her brother on the phone.

=== Meeting Makoto (Manga: [[Volume 81|859-861]], Anime: [[The Suspect is Makoto Kyogoku|744-745]])===
[[File:SeraAndMakoto.jpg|right|thumb|200px|Masumi attacks Makoto with her Jeet Kune Do.]]
At a Bowling Center with Conan, Ran, Sonoko and Kogoro, Masumi is introduced to Sonoko's boyfriend Makoto. Shortly before, Makoto mistakes Masumi for a stranger being "overly friendly" with Sonoko and tries to fight her. Masumi explains that she has been taught Jeet Kune Do by her older brother, she also reveals that besides her assumingly dead brother, she also has a second-oldest brother. Furthermore, Masumi explains to Conan that her brother also advises her on cases by phone. After successfully investigating the crime scene with Conan, Masumi steps aside with her smartphone and types in the message "It seems like he's also arrived at the truth... But whether or not our deductions are the same - lately I've been losing confidence in that regard...". When the recipient writes back "Who is he? I'd like an explanation!", Masumi takes a picture with her smartphone. However, the recipient's answer, "If it's him, there's no problem." reveals that he is familiar with Conan. It is heavily implied that it is the same person Conan saw Masumi making a call with in File 857.

===Red Woman Case (Manga: [[Volume 82|872]]-[[Volume 83|875]], Anime: [[The Tragedy of the Red Woman|754-756]])===
Masumi takes a request from her middle brother to consult in his place about a case involving some of his high school classmates who are now 28-29 years old. On the way to a cabin in the woods, Masumi tells Conan and the gang more about her family history and timeline. She reveals that she and her brothers each have different family names for various reasons, one of which is the death of her father. The case takes a dark turn when one of the classmates is found murdered in a bathtub of tomatoes. With the help of the Nagano police, Conan and Masumi manage to solve the case. Later, Masumi asks Conan to find her cellphone in the kitchen by calling it with his. He does so and Conan notices the call background screen is a [[Mary|child who looks like Masumi]] with eye bags similar to those of the [[Akai family]] members. Masumi mentions having a younger sister earlier on (Episode 754), so Conan suspects Masumi was intentionally trying to show him the child for some reason.

===Romance Novelist Murder Case (Manga: [[Volume 83|876]]-[[Volume 83|878]], Anime: [[The Romance Novel with the Unexpected Conclusion|759-760]])===
On the way home from school, Ran and Sonoko decide to visit Masumi's hotel (which is different from the other one she has been staying at earlier). Masumi claims she had a meeting with her supposedly-hard-to-reach [[Akai family's middle brother|middle brother]] planned, so she texts him to reschedule. Conan seems to notice this contradiction. At the hotel, Conan tries to peek in Masumi's bedroom, but Masumi wards him off by embarrassing him. Masumi also asks Conan is she reminds him of someone he met in the past, but Conan draws a blank. A murder interrupts the meeting. While Conan is investigating, he notices the middle-school aged [[Mary|child]] from Masumi's cellphone picture in the gathered crowd. Later, Conan and the gang return to Masumi's room, and Conan hides his glasses earpiece [[microphone]] to spy on the apartment. It is quickly found and destroyed by Masumi and the child after Conan departs with Ran and Sonoko. Masumi asks the child is she is beginning to like him, but the child responds that she is still long way from trusting him. The child asks Masumi to tell Conan she is her little sister from outside the territory if he asks about her. Masumi doesn't mention that she showed Conan the child's picture.
[[File:Masumi and Scotch Flashback EP836 (3).jpg|150px|thumb|right|Masumi remembers meeting a man nicknamed Scotch]]

=== Shogi Tournament (Manga: [[Volume 85|899-902]], Anime: [[Taiko Meijin's Match of Love|785-786]]) ===

=== Poolside Case (Manga: [[Volume 85|903]]-[[Volume 86|905]], Anime: [[The Mystery Sinking in the Midsummer Pool|787-788]]) ===

=== Ran & Shinichi - First Contact (Manga: [[Volume 87#Ran & Shinichi - First Contact|921-924]], Anime: [[Memories from Sakura Class|853-854]]) ===

=== A Killer in Ramen Ogura (Manga: [[Volume 88#A Killer in Ramen Ogura|928-930]], Anime: [[Ramen So Good, It's to Die For 2|827-828]]) ===

=== Girls Band Murder Case (Manga: [[Volume 88#Girls Band Murder Case|936-938]], Anime:[[The Unfriendly Girls Band|836-837]]) ===
Four years ago, Masumi was taught a few notes on the base guitar by a friend of her brother, [[Shuichi Akai|Shuichi]]. The friend was referred to as "[[Scotch]]" by another person who Masumi thinks looks like [[Rei Furuya|Rei]].

=== Soul Detective Murder Case (Manga: [[volume 90#Soul Detective Murder Case|951-953]], Anime: TBA) ===

=== Swimsuit Festival Murder Case (Manga: [[Volume_91#Swimsuit_Festival|969]]-[[Volume_92#Swimsuit_Festival|971]], Anime:TBA) ===
Masumi intentionally puts on a bathing suit similar to the one that she had worn in the past to try to jog Conan's memory of where they met. A case occurs, which involved the method of counting fingers in different countries. Masumi seems to count the same way that is used in the UK, but seems to think that it is the way it is done in the US. As Conan corrects her, she seems confused. Conan thinks back on all of the times that Masumi has done things that seem to imply that she was in the UK rather than the US and he finally remembers the events of 10 years ago by repeating イギリス (Igirisu / Britain) in is head.
{{clear}}

=== A Chance Meeting at the Beach (Manga: [[Volume_92#A_Chance_Meeting_at_the_Beach|972-974]], Anime:TBA) ===

== Non-Canon Plot Overview ==

=== Movie 18: [[Dimensional Sniper]] ===
Sera appeared in this movie as an investigator of the person who had been shot in the Bell Tower. She and Conan helped in chasing the culprit and afterwards was shot by the culprit after saving Conan.

== Plot Exposition ==
=== Hints that Masumi was Shuichi Akai's sister ===
Masumi was revealed to be Shuichi Akai's sister on the Bell Tree Express after a confrontation with [[Scar Akai]]<ref name=821p16>Manga [[Volume 78]], File 4 (821), pg 16: "Mystery Train (Junction)"</ref> and while sleeptalking.<ref name=823p4>Manga [[Volume 78]], File 6 (823), pg 4: "Mystery Train (Releasing Smoke)"</ref>
[[File:Sera_and_Shuuichi.png|thumb|right|300px|Masumi and [[Shuichi Akai]].]]
* Masumi has bags under her eyes identical to Shuichi Akai's.
* Masumi Sera's name is also incredibly similar to Mobile Suit Gundam character [http://gundam.wikia.com/wiki/Sayla_Mass Sayla Mass] ({{lang|ja|セイラ・マス}}, ''Seira Masu''). [[Shuichi Akai#Name origin|Shuichi's name is derived]] from Sayla Mass's older brother's name, Char Aznable.
* Conan said he has a feeling he had met her before. "''Somehow I feel like we've met somewhere before, it might be that person resembles someone I know, that's why the feeling that we've met before is on my mind...''"<ref>Manga Chapter 771: Let's Hear Your Brilliant Deduction! p.11</ref>
* [[Andre Camel]] and most likely [[James Black]] seem to recognize her from somewhere. On another interesting note, James was the first to recognize that Masumi was a girl. Everyone else thought that she was a guy when they first saw her. Since James was Shuichi's boss, he would most likely know that Shuichi has a younger sister and what she would look like.
* Masumi lived in Japan until three years ago when her family moved to America. This matches with the time when Shuichi was infiltrating the Black Organization. The family's move to America could be the FBI's attempt to protect them should something go wrong with Shuichi's mission.
* In Chapter 801, Masumi chased after [[Scar Akai]] who appeared while she was walking with Ran in front of the Mouri Detective Agency. Although, Scar Akai hid before she could find him, she told Ran that she had just seen "someone she knew".
* In Chapter 859, Masumi, when being asked who taught her Jeet Kune Do, answers that her older brother did. Consequently, Conan asks Sera: "But, didn't you say your older brother was dead?" This leads to Masumi remarking "Yeah... That's what I heard." also further supporting the theory that Masumi is in Japan to investigate her brother's death.

=== Hints that Masumi was not Bourbon ===
* In Chapter 801, Masumi chased after [[Scar Akai]] who appeared while she was walking with Ran in front of the Mouri Detective Agency. Although, Scar Akai hid before she could find him, she told Ran that she had just seen "someone she knew". She then thinks there is "no way it was possible" regarding the man she saw, which would make sense if she thought Shuichi was dead. This implied she wasn't Bourbon, since Bourbon believes he is the only one who can kill Shuichi, implying that Gin might have failed to do so. Hence Bourbon wouldn't think that it was impossible to meet Shuichi again in the street.

==Relationships analysis==

===Friends & Family ===

==== Shuichi Akai ====
[[Shuichi Akai]] is Masumi's older brother. She didn't get to meet him until she was six-seven years old, because Shuichi went to study abroad before Masumi was born. At first meeting she was very shy, but she did make some pranks in an attempt to make him smile. Masumi refers to Shuichi as "Shu-nii", implying that they were close. Masumi seems to miss him after his supposed death. In the Blush Mermaid Heist, Masumi is shown to be fond of her fedora as she believes it has the same "feel" as Shuichi's old hats. Shuichi sent Masumi Jeet-Kune-Do training tapes while she was in elementary school. She watched these so many times while practicing that she wore them out.<ref name="876p2">Manga [[Volume 83]], File 4 (876), pg 2: "Romance Novelist"</ref> She describes her eldest brother as ''strong'' in contrast to her second - oldest brother.<ref name="859p6-7">Manga [[Volume 81]], File 9 (859): pgs 6-7: "Jeet Kune Do vs. Karate"</ref>

==== Conan Edogawa ====
[[File:EP671-674_25.png|thumb|right|Masumi hugs Conan after rescuing him in [[Detectives' Nocturne]].]]
Masumi is interested in [[Conan Edogawa|Conan]]'s abilities as a detective and has been gathering information on him and his friends. She appears to be certain that Conan is Shinichi Kudo. Despite her initial suspicious presentation, Conan felt like she wasn't a bad person and so didn't mistrust her. Conan at several points questions her if they've met before, but she denies this, once secretly thinking, "Now's not the time". The period in which such an encounter could have taken place is initially hinted to be somewhere before the three-year span of Masumi's sojourn in the United States, when she was in her preteen years.<ref name="Mang83">Manga [[Volume 83]], File 2 (874), pg 7-8: "Red Past"</ref><ref name="Mang86">Manga [[Volume 86]], File 1 (905): "The Truth Rises to the Surface"</ref>

It is later shown that she had met Conan/Shinichi ten years ago, when the Akai family had gathered on an undisclosed beach in Japan prior to Shuichi Akai joining the FBI. By chance, Shinichi and [[Ran Mouri|Ran]] had also vacationed there, and they all ended up as witnesses and investigators in a gone-awry flight attempt from a robbery. When Shinichi managed to make Shuichi laugh (something Masumi had miserably failed to achieve) with his intelligence, observation skills and some unintended jokes, Masumi, in her admiration for Shinichi, began to call him "wizard". It is quite possible that this meeting inspired Masumi to become a detective herself.<ref name="Mang92">Manga [[Volume 92]], File 2-4 (972-974): "A Chance Meeting at the Beach"</ref>

If Masumi really lived in England, instead of America, then it's possible that she saw the tennis match from the London case on TV and recognized Conan as Shinichi based on his proclamation as 'Holmes' apprentice'.

On several occasions, such as the dramatic conclusion of the [[Volume 76#Online Client|Online Client Case]], Masumi has displayed an intensely affectionate air towards Conan which somewhat transcends a mere "big sister" relationship.<ref>Manga Chapter 800: ''Online Client Case'' - "When Objects Collide"; Anime Episode 674: ''[[Detectives' Nocturne]]'' - "Bourbon"</ref> In fact, it is hinted during the [[Volume 83#Romance Novelist Murder Case|Romance Novelist murder]] and in the movie ''[[Dimensional Sniper]]'' that she may actually be entertaining a crush on Shinichi/Conan and hopes of initiating a closer relationship with him. However, the actual level of her feelings for him is yet to be publicly revealed.

==== Ai Haibara ====
Masumi has been interested in meeting [[Ai Haibara]] for yet unrevealed reasons and has been secretly gathering information on her. She also seemed to recognize [[Shiho Miyano]] in the video of her rescuing the [[Detective Boys]]. Haibara in turn feels uneasy around Masumi, especially in close contact situations though arguably it could also be due to Scar Akai's presence near Masumi.

==== Ran Mouri ====
[[File:Ran and Sera and Wave.jpg|thumb|left|180px|Ran hears sounds of rippling waves when she sees Masumi hurried away]]
Since enrolling at Teitan High, Masumi and [[Ran Mouri|Ran]] have become friends and often walk home from school together. Masumi has also declared Ran as "her type" when they first met as a sign of liking, though this ultimately led Sonoko, Conan and Ran herself to mistake Masumi for a boy.

At one point, Ran recalls having met Masumi before in the past, hearing the sound of "rippling waves" when the she sees the latter leaving, "as if some sort of magic were at work".<ref name="Mang86"></ref> It is revealed in a later story that she and Masumi had actually met 10 years before, when they were both still children, on a beach, where by happenstance she, Shinichi and the Akai family inadvertently became embroiled in the aftermath of a crime (see '''Conan Edogawa''', above).<ref name="Mang92"></ref>

==== Sonoko Suzuki ====
Since enrolling at Teitan High, Masumi and [[Sonoko Suzuki|Sonoko]] have become friends and often walk home from school together, with Sonoko describing Masumi as a popular girl who is "cheery, sociable, boyish and cute" and on top of that, a "Jeet Kune Do using detective", though she also teasingly remarks that the only thing "against Sera" is her flat chest.

==== Akai family's middle brother ====
Masumi appears to have a good relationship with her [[Akai family's middle brother|second-older brother]] and often consults him regarding information or deductions about the cases she faced, and also has a high regard of her brother's intellect, even considering the already sharp Shuichi as "strong" in contrast to her second older-brother.

==== Tsutomi Akai ====
Masumi's father died before she was born, so she never knew him. But he refer to him as 'Papa'

=== Black Organization ===

==== Rei Furuya ====
Rei first saw Masumi in Detectives Nocturne case and seemed to recognise her. They formally met in chapter 936 (Girls Band) at [[Café Poirot]]. Masumi felt like having met him and even asked him directly about that, but Rei said that was the first time they met. When Masumi talked about a friend of her brother who taught her play the guitar, Rei also seemed to know about that incident. In Masumi's flashback of that friend, a man who looked very much like Rei appeared, and Masumi once again wondered about it, to which Amuro replied that she took the wrong person.

==Speculation==
[[File:Sera Knowing Conan's Name.png‎|thumb|right|170px|Masumi mentioning Conan's name.]]
=== Masumi met Shinichi and Ran when she was younger and knows Conan is Shinichi ===
*Masumi knew [[Conan Edogawa|Conan]] and [[Ran Mouri|Ran]]'s identities before they introduced themselves. She also knew that Conan is a detective.<ref> [[Volume 73]], File 6 (768)</ref>
*Masumi seems to know that Conan is the brains behind Sleeping Kogoro. Conan seems to think that he may have met Masumi before or that she resembles someone that he knows. He believes that she got the deduction of a case wrong just so that he would reveal himself. <ref> [[Volume 73]], File 9 (771)</ref>
*Conan realizes he met Masumi before because he finds her snaggletoothed smile familiar,<ref name=845p16>Manga [[Volume 80]], File 6 (845), pg 16: "Our Territory"</ref>
*Masumi admits that she has met Conan before, but she can´t tell him until "the time" comes.<ref name=846p16>Manga [[Volume 80]], File 7 (846), pg 16: "The Magic Lock"</ref>
*Ran has met Masumi as well because Masumi's figure as she runs away reminds her of "sounds of rippling waves, as if some sort of magic were at work."<ref name=846p4>Manga [[Volume 80]], File 7 (846), pg 4: "The Magic Lock"</ref>
*Masumi, asks Conan if he once met a girl "a long time ago and could never forget [her]"<ref name=876p11>Manga [[Volume 83]], File 4 (876), pg 11: "The Romance Novelist"</ref> and gets annoyed when he says he can't recall someone like that.
*Ran has a flashback to when she saw a younger Masumi, who is wearing a bathing suit, say, "You are a wizard, right?". Ran also feels that she has met [[Mary]].<ref> Manga [[Volume 86]], File 1 (905)</ref>
*The meeting occurred 10 years ago, as mentioned by Mary.<ref> Manga [[Volume 90]], File 5 (953)</ref>
*Masumi puts on a swimsuit similar to the one in Ran's flashback in order to jog Conan's memory, which results in him remembering her in that bathing suit as well, along as three other people, assumed to be her relatives. <ref> Manga [[Volume 91]], File 11 (969)</ref>

In Chapter 771, it is revealed that she also knows Professor Agasa, although she calls him "Professor what's his name". Although this could be explained away as her talking to Conan off screen and her just not remembering Agasa's name.

=== Identity of Masumi's middle brother ===
{{main|Akai family's middle brother}}

=== The Wizard ===
In a PS, [[Akai family's middle brother|Masumi's middle brother]] asks if she "has already met the Wizard?"<ref name=861p15-16>Manga Volume 81, File 11 (861), pg 15-16: "Just like Magic"</ref> Masumi's thought reply is "You could say so..." Later, Masumi "thinks aloud" that her reason for returning to Japan is to meet the Wizard once more.<ref name=874p8>Manga [[Volume 83]], File 2 (874), pg 8: "The red past"</ref> The identity of the Wizard is still unclear.

==== Shinichi Kudo ====
Tellingly, Masumi turns towards Conan when thinking of the answer "You could say so". At this point Masumi seems to know Conan is Shinichi. If Shinichi was nicknamed "The Wizard" by Masumi and/or her brother because of what happened when he and Masumi met in the past, then the response is appropriate since she could only sort of meet with Shinichi, because Shinichi shrunk into Conan. It's possible that the event where Shinichi earned the nickname "The Wizard" was Shinichi and Ran's meeting with Masumi 10 years ago. When trying to remember Masumi, Ran specifically mentions "sounds of rippling waves, as if some sort of magic were at work."<ref name=846p4>Manga [[Volume 80]], File 7 (846), pg 4: "The Magic Lock"</ref> A "magical" incident, if it was Shinichi's doing, might have earned him the nickname. Ran has a flashback of a young Masumi saying "You are a wizard, right?".<ref> Manga [[Volume 86]], File 1 (905)</ref> Conan seems to have remembered meeting Masumi 10 years ago and is shown as a young Shinichi standing in front of a large wave.<ref> Manga [[Volume 92]], File 2 (971)</ref>

==== Someone else ====
At this point it is unlikely that the Wizard is anyone else. There is evidence that Masumi nicknamed the person who she calls Wizard, at a point in the past while Ran was nearby. If Ran was nearby, then this would have to have happened when they first met 10 years ago, meaning that the person must be someone who existed back then. The topic of the Wizard came up during a text conversation about Conan between Masumi and her middle brother, and her response to if she had met the Wizard again was "You could say so", which is more than likely implying that she is referring to Conan, and therefore Shinichi.

[[File:Akai's picture 338.PNG|thumb|right|The picture of the Detective Boys the mystery assistants captured]]
===Masumi learned about Haibara from Shuichi's picture===
Masumi initially had an interest in Haibara. This is strange because Haibara didn't exist prior to Shiho shrinking. The knowledge of Shiho should have been secret to her as well, because Shuichi Akai's infiltration of the Black Organization was a secret. If Masumi doesn't even know the details of her brother's death, why should she know about Shiho? Masumi may recognize Haibara from pictures of Conan and Haibara that Shuichi took back during the Vermouth arc. It is standard procedure in the US to send the personal belongings of the dead back to their families. If Shuichi mixed these pictures in with his own things when he took them out of his truck before meeting with Kir, it's possible they were overlooked when the FBI sent Shuichi 's things to his family. If Masumi was interested in finding out how and why Shuichi died, she would begin by researching the people in those pictures and those connected with them in hopes of finding clues.
{{clear}}


==Character popularity==
*In honor of the release of the 800th manga chapter, Shonen Sunday held a popularity poll/contest containing 91 Detective Conan characters to choose from. Masumi placed 9th overall with 292 votes.<ref>{{cite web|url=http://forums.dctp.ws/viewtopic.php?f=4&t=8024|title=Shonen magazine detective conan official poll results published [magazine pic]|date=2012-02-28|publisher=eva|accessdate=2012-02-29}}</ref>

*Masumi ranked 10th in the Digest Book 50+ poll "Best Detective Conan characters", with 107 votes.

*Masumi ranked 5th in the Digest Book 60+ poll "Cutest Detective Conan characters", with 135 votes.

*Masumi ranked 10th in the Digest Book 70+ poll "Characters you want to go on a date with", with 106 votes.

*Masumi ranked 11th in the Digest Book 80+ poll "Character you want to marry", with 281 votes.

==Name origin==
{{Nihongo|Masumi Sera's|世良・真純|Sera Masumi}} name comes from the [[wikipedia:Mobile Suit Gundam|Mobile Suit Gundam]] character {{Nihongo|[[wikipedia:Sayla Mass|Sayla Mass]]|セイラ・マス|Seira Masu}}.<ref>[[Sherry's soliloquy|Sherry's soliloquy (2012-06-17)]], Gosho was referring to the revelation that Masumi is Shuichi's sister (Manga File 821): {{lang|ja|やっぱりアルテイシアだったのね・・・}} (So it was '''Artesia'''…). Note that "Artesia" is another name of '''Sayla Mass'''.</ref> The kanji for Masumi's surname mean 'good world'. The kanji for her first name, Masumi, mean 'true' and either 'pure' or 'net.'

==Quotes==
{{cquote|Deletion. For data at least ... is an easy task to accomplish.|Masumi, on deleting a picture of Haibara from her computer, File 777 pg 16}}

{{cquote|I guess I'm a bad kid after all...|Masumi, while crying, File 814 pg 16}}

==Trivia==
*Masumi is based on [[Natsuki Koshimizu]], a tomboy detective girl turned criminal who made her first appearance in the [[Volume 54#Detective Koshien Case|''Detective Koshien Case'']]. Since Natsuki had proven highly popular, but Aoyama couldn't recycle her as a protagonist, the character of Masumi was created instead.<ref>''Shonen Sunday'' #33</ref>
*When she was young she liked to read the "[[Night Baron]]" series, so she is fan of [[Yusaku Kudo]].
*Her catchphrase, "Case Closed" (said in English), is likely a reference to the English-language name of Detective Conan.
*Masumi owns an [[Vehicles_in_Detective_Conan#Sera's Yamaha_Artesia_XT400|Artesia XT400]].
*In File 859, Masumi reveals that she has a second-older brother and that her oldest brother taught her Jeet-Kune-Do.
*Masumi speaks Queen's English.<ref>[[:File:Postcard2015 1.jpg]]</ref>

==In other languages==
{{BeginTable CharLang}}
{{OtherLangItem|flag=Japan|Japanese|真純 Masumi|世良 Sera}}
{{OtherLangItem|flag=Arab League|Arabic|ماسومي Māsūmi|سيرا Sēra}}
{{OtherLangItem|flag=France|French|Masumi|Sera}}
{{OtherLangItem|flag=Mexico|American Spanish|Masumi|Sera}}
{{OtherLangItem|flag=Brazil|Brazilian Portuguese|Masumi|Sera}}
{{CharLangItem|flag=Italy|Italian|Masumi|Sera}}
{{CharLangItem|flag=North Korea|flag2=South Korea|Korean|세라 Sera|양 Yang}}
{{OtherLangItem|flag=Thailand|Thai|มาสึมิ Mās̄ụ-mi|เซระ Sera}}
{{EndTable}}

==See also==
* [[Characters]]
* [[Akai family]]

==References==
<references />

{{DEFAULTSORT:Sera Masumi}}
[[Category:Characters]]
[[Category:Female characters]]
[[Category:Detectives]]
[[Category:High school detectives]]
[[Category:High school students]]
[[Category:Martial artists]]
[[Category:Characters who know Conan's identity]]
[[Category:Characters named after Mobile Suit Gundam characters]]
[[Category:This page has images with hideous anime aggregate site watermarks]]
[[de:Masumi Sera]]
{{Characters}}

Shukichi Haneda

2017-03-20T18:54:04Z

8627937131f701a286774c43a25313a3: /* Appellations */

{{SpoilerWarningArticle|This article contains significant '''[[Glossary#Spoiler|spoilers]]''' about major events concerning this person. It is likely you will be spoiled if you have not read all the manga released to date. To find out what pages will be safe for you to read, please consult our [[Glossary#Spoiler|wiki spoiler policy]].}}

{{InfoBox Char
| name = Shukichi Haneda
| japanese-name = {{nihongo|羽田秀𠮷}} (Haneda Shūkichi)
| image = Shukichi Haneda Profile.jpg
| age = 28
| gender = Male
| height =
| weight =
| date-of-birth = Seems November 12<ref name="marriage">[[:File:Shukichi's marriage registration.jpg]]</ref>
| relatives = [[Tsutomu Akai]] (father, deceased) [[Mary Sera]] (mother) [[Shuichi Akai]] (older brother) [[Masumi Sera]] (younger sister) [[Kohji Haneda]] (non-blood brother, deceased)
| occupation = Shogi player
| nicknames = {{nihongo|Chukichi|チュウ𠮷/<ruby>秀𠮷<rp>[</rp><rt>チュウキチ</rt><rp>]</rp></ruby><ref name="file946">[[Volume 89#Shukichi's Envelope Case|File 946 (Volume 89)]]</ref>|4=[[Yumi Miyamoto]]}} Kichi-nii ([[Masumi Sera]]) Aniki ([[Masumi Sera]])
| aliases = Taiko Meijin (Celebrity name) Shukichi Sera Shukichi Akai (Birth name)
| first-appearance = Manga: [[Volume 80#File_847_-_Until_I_Collect_All_Seven|File 847]] Anime: [[The Ex-Boyfriend Living Next to a Crime Scene|Episode 731]]
| appearances = {{:Shukichi Haneda Appearances}}
| cases-solved = 2
| keyhole = [[Volume 80]]
| japanese-voice = [[Toshiyuki Morikawa]]
| english-voice =
| drama-actor =
| footnotes =
}}
'''{{nihongo|Shukichi Haneda|羽田秀𠮷|Haneda Shūkichi}}''' is a professional [[wikipedia:Shogi|shogi]] player, as well as the former boyfriend of [[Yumi Miyamoto]] in the manga and anime franchise ''[[Detective Conan]]''. He is also the middle brother of the Akai family, making him the sibling of [[Shuichi Akai]] and [[Masumi Sera]].

==Background==
[[File:Kichi_chibi.png|thumb|110px|left|Shukichi as a middle schooler more than 10 years ago.]]
Shukichi Haneda was presumably born as Shukichi Akai until some incident, perhaps the death of his father, caused Shukichi and [[Masumi|Masumi Sera]] to switch to using "Sera" as a family name. The Akai family apparently lived a rather wealthy life.<ref>[[Volume 80|Volume 80, File 847, page 3: "Until I Collect All Seven"]]</ref> He might have been born in England. Ten years after moving to Japan, he and his family were briefly reunited with Shuichi, who plans to join the FBI to investigate the death of their father. When Shukichi graduated from high school he began using the family name Haneda from Koji Haneda, a shogi player he admire. It is not clear what their relationship was. At some point he started his career as a professional shogi player.

Shukichi met [[Yumi Miyamoto]] for the first time on a train where he overslept, resting his head on Yumi's shoulder, and Yumi waited for him even though she had to miss her stop.<ref name="titles">[[Volume 85|Volume 85, File 900, page 6: "Check"]]</ref> He attained the prestigious [[wikipedia: Meijin (shogi)|Meijin]] title back when he was still dating Yumi, without the latter knowing.<ref>[[Volume 80|Volume 80, File 849, page 15: "Taikou's Optimal Moves"]]</ref>

Shukichi's main objective is to prove himself worthy as Yumi's boyfriend by secretly winning all seven shogi titles, despite having technically been dumped by her. He was widely known by the name of '''{{nihongo|Taiko Meijin|太閤名人|Taikō Meijin}}''' in the world of shogi even before he finally achieved all seven titles in his most recent Shogi match, due to his unique skill.<ref name="titles">[[Volume 85|Volume 85, File 902, page 16: "The Brilliant Move"]]</ref> Even though he then lost one in a revenge match with his rival [[Chikara Katsumata]], he intends to stick with his original plan.

Shukichi currently lives in an apartment at {{nihongo|Chateau Beika Condo|シャトー米花マンション|Shatō Beika Manshon}}, the same place as when he was still going out with Yumi.<ref>The anime version (Episode 731) shows the number of his locker as 1801.</ref>

==Personality==
Shukichi has a very cheerful personality, which Yumi (to her annoyance) perceived as immature. In front of Yumi and other characters, he rarely suppresses his emotions, which can range from overly joyful when meeting his ex-girlfriend, to hilariously disapproving when the latter announces that their relationship was over. Despite this, Shukichi does show a calmer and more serious side during some situations, most notably when he is making his deductions or when he appears in front of the media.

On the other hand, Shukichi is quite confident and proud of his excellent memory, as seen when he proclaims himself the best memorizer in the world.<ref name="memory">[[Volume 80|Volume 80, File 847, page 14: "Until I Collect All Seven"]]</ref> From his goal of achieving all seven shogi titles to win Yumi's admiration, he shows himself as a person with great patience and determination. The only thing which can disturb him is his intense feelings for Yumi; his belief in her love for him affects his performance at shogi immensely, making her his effective muse.

He is also a strong detective, more skilled than Masumi. She often consulted him on cases over the phone, double-checking her deductions.

==Appearance==
[[File:Shuukichi appearance.jpg|250px|thumb|Shukichi Haneda's different looks.]]
Shukichi Haneda is perhaps the most characterized by his hair, which sticks up in the back like a bed head. He is often shown wearing glasses, usually except when he is playing shogi or is being interviewed as a professional shogi player.

Unlike his two siblings who resemble their mother, Shukichi is most similar to his father.<ref name=859p6-7>Manga Volume 81, File 9 (859): pgs 6-7: "Jeet Kune Do vs. Karate"</ref>

He apparently dresses in slouchy clothes like jerseys fairly often. In Shogi matches he wears traditional attire.

==Abilitites and Skills==
===Shogi===
Shukichi Haneda has won numerous shogi matches and earned himself the title Meijin, which, along with [[wikipedia:Ryu-oh|Ryu-oh]], is the most prestigious title in the professional shogi titleholder system.<ref>[[Wikipedia:Meijin (shogi)]]</ref><ref>[[Wikipedia:Ryu-oh]]</ref> In [[Volume_85#File_902_-_A_Brilliant_Move|File 902]], he managed to attain all seven titles. During the events of the [[Volume_89#Shukichi's_Envelope_Case|Missing Envelope Case]], Shukichi loses his title defense match for the Osho title against [[Chikara Katsumata]] and subsequently only holds six titles at the moment.

===Memorization===
Shukichi is extremely skillful at memorizing, as shown when he managed to remember the code written on [[Sakurako Yonehara]]'s paper despite having only seen it for a very short amount of time. He also claims to be the best in this field.<ref name="memory" />

===Deductive abilities===
Shukichi Haneda is very intelligent, something his skill in memorization appears to help. His intelligence seems to be well-known among the students from his high school, as he apparently has solved some mysteries in his class during his time studying there.<ref name=872p3>Manga [[Volume 82]], File 11 (872), pg 3: "The Red Woman"</ref> It is possible his intelligence may even outstrip his older brother Shuichi's since Sera characterizes the already intelligent Shuichi as "strong" in contrast to the middle brother's "smart". Shukichi often advises Masumi on cases via cellphone.<ref name=859p6-7/> He was able to correctly deduce over the phone that Masumi's deduction was unreliable in [[Volume_81#Steamy_Relations|a bathroom murder case]]. He was able to solve a murder case next to his house, where he effectively figured out the trick behind the victim's suicide note, as well as the culprit's identity.

==Appellations==
<tabs jsId="nicknames">
<tab title="Friends and relatives">
{{appellations/head|Shukichi}}
{{appellations|Mary Sera|Shukichi<ref name="file974">[[volume 92#A Chance Meeting at the Beach|File 974 (Volume 92)]]</ref>|Mom (''Kāsan'')<ref name="file974" /> Mom Mary (''Mary-kāsan'')<ref name="file972">[[volume 92#A Chance Meeting at the Beach|File 972 (Volume 92)]]</ref>}}

{{appellations|Tsutomu Akai|-|Dad (''Otōsan'')<ref name="file974" />}}

{{appellations|Shuichi Akai|Shukichi<ref name="file972" />|Shuichi-niisan<ref name="file972" /> Niisan<ref name="file972" />}}

{{appellations|Masumi Sera|Kichi-nii<ref>[[:File:AChint8-06-2014 4.JPG]] ([[Masumi Sera|Sera-chan]] calls [[Akai family's middle brother|him]] Kichi-nii)</ref> Kichi-niichan<ref name="file972" /> Aniki Chukichi (talking to [[Yumi Miyamoto|Yumi]])<ref name="file929">[[Volume 88#A Killer in Ramen Ogura|File 929 (Volume 88)]]</ref>|Masumi<ref name="file972" />}}

{{appellations|Kohji Haneda|-|Haneda Kohji<ref name="file947" />}}

{{appellations|Yumi Miyamoto|Chukichi<ref name="file899">[[volume 85#Shogi Tournament|File 899 (Volume 85)]]</ref> Bald-Headed Rat (''Hage-Nezumi'')<ref name="file947">[[volume 89#Shukichi's Envelope Case|File 947 (Volume 89)]]</ref>|Yumi-tan<ref name="file899" /> Yumi-san<ref name="file929" /> Precious person (''taisetsu na hito'')<ref name="file945">[[volume 89#Shukichi's Envelope Case|File 945 (Volume 89)]]</ref>}}

{{appellations|Katsumasa Ogura|Yumi-chan's boyfriend (''Yumi-chan no kareshi'')<ref name="file929" /> [[Yumi Miyamoto|Her]] boyfriend with round glasses (''Maru-megane no kareshi'')<ref name="file928">[[Volume 88#A Killer in Ramen Ogura|File 928 (Volume 88)]]</ref>|-}}
|}
</tab>
<tab title="Detective Boys">
{{appellations/head|Shukichi}}
{{appellations|Conan Edogawa|Haneda-san<ref name="file849">[[volume 80#Yumi's Love Story|File 849: Taiko's Optimal Move (Volume 80)]]</ref> Taiko Meijin<ref name="file899" /> Haneda Shukichi (talking to the [[Detective Boys|DB]])<ref name="file899" /> Haneda-meijin<ref name="file929" /> Boyfriend-san (''kareshi-san''; talking to Yumi)<ref name="file929" />|Wizard (Mahō-tsukai; mail)<ref>File 861</ref>}}

{{appellations|Ai Haibara|Taiko<ref name="file849"/> Taiko Meijin<ref name="file945" />}}

{{appellations|Genta Kojima|Niichan<ref name="file849" /> Taiko Meijin<ref name="file900">[[Volume 85#Shogi Tournament|File 900 (Volume 85)]]</ref>}}

{{appellations|Mitsuhiko Tsuburaya|Haneda Shukichi<ref name="file849" /> Taiko Meijin<ref name="file947" />}}

{{appellations|Ayumi Yoshida|[[Yumi Miyamoto|Yumi-san]]'s ex-boyfriend-san (''Yumi-san no moto-kare-san'')<ref name="file849"/>}}

{{appellations|Hiroshi Agasa|-|Agasa-san}}
|}
</tab>
<tab title="Law enforcement">
{{appellations/head|Shukichi}}
{{appellations|Miwako Sato|Taiko Meijin<ref name="file945" /> Your boyfriend (''kareshi''; talking to Yumi)<ref name="file945" /> Haneda Shukichi<ref name="file946" />}}

{{appellations|Wataru Takagi|Haneda-san}}

{{appellations|Naeko Miike|Haneda-san Haneda-meijin<ref name="file929" /> Boyfriend-san (''Kareshi-san'')<ref name="file929" />}}

{{appellations|Juzo Megure|Your boyfriend (''kimi no kareshi''; talking to Yumi)}}
|}
</tab>
<tab title="Others">
{{appellations/head|Shukichi}}
{{appellations|Chikara Katsumata|Haneda-meijin<ref name="file946" />}}
|}
</tab>
</tabs>

==Plot overview==

===Missing Classmate Case (Manga: [[Volume 49|506]]; Anime: [[Super Secret of the Road to School|427]]) ===
Shukichi was first mentioned by Yumi to the Detective Boys when the children were looking for a missing schoolgirl. She described him as someone with a good-looking face but childish personality. She also mentioned having "dumped him in a bad way", so she was buying a facemask so he wouldn't recognize her, since she was going to a place not far from where he lived.<ref>[[Volume 49|Volume 49, File 506, page 11: "The Secret Path to School"]]</ref>

=== Sera's phone call during Detective's Nocturne (Manga: [[Volume 76|798-800]], Anime: [[Detectives' Nocturne|672-674]])===
After Sera took down the kidnapper with her motorcycle she either made or received a call from an unknown person. Given her pattern of contacting her brother regarding cases, she may have called him concerning this one. Another possibility is Mary.

===Yumi's Love Story (Manga: [[Volume_80|847-849]]; Anime: [[The Ex-Boyfriend Living Next to a Crime Scene|731-732]])===
Yumi recalls her moment with Shukichi before they broke up. When she proposed that they should end their relationship as she would become a police officer, Shukichi handed her an envelope and told her not to open until he "collect all seven", referring to the shogi titles. However, he hasn't contacted her ever since then, so she officially broke up with him.

When a murder takes place at his neighboring apartment, Shukichi becomes one of the prime suspects as he knows the code to acquire the spare key. That is when he finally meets his ex-girlfriend again after all those years. He cheerfully introduces to everyone about their relationship, only to be denied by Yumi.

As the investigation progresses, Shukichi perceives the true nature of the victim's suicide note, calling it "a well prepared move", which turns out to be an important clue. Later, when asked about his own alibi, Shukichi refuses to answer, much to Yumi's annoyance. However, he mentally tells her not to be worried, while confidently looking at Conan, who's already figured out the truth about the case.

Conan, with Shukichi's helps, points out that the culprit is the victim's husband. Shukichi explains that the suicide note was actually written four years ago, on an airplane that almost crashed; the culprit used it to fake her death as a suicide. He also reveals that he has suspected the husband since he saw the note, and his theory was confirmed when he overheard his conversation with his son.

At the end of the case, it is revealed that Shukichi is in fact the famous shogi player called "Taiko Meijin", and was having a match when the crime occured. He kept quiet about it so Yumi couldn't find out about his occupation. It's also revealed that the reason he's so determined in winning all seven shogi titles is because when the two were still dating, Yumi used to express her admiration for a sumo champion who had won six tournaments in a row.

=== Bathroom murder case's failed deduction (Manga: [[Volume 81|856-858]], Anime: [[Bathroom Where Ran Collapsed As Well|740-741]])===
Sera had called Shukichi regarding the "adultery case" she was about to investigate and was overheard by Eri. After the murder was discovered, Sera relayed her brother the facts of the case and her deduction by phone call. He told Sera her deduction was unreliable.

=== Bowling Alley drowning murder (Manga: [[Volume 81|859-861]], Anime: [[The Suspect is Makoto Kyogoku|744-745]])===
[[File:Akai Middle Brother's hand.png|thumb|right|150px|The middle brother's hand and cellphone]]
Conan asks Sera who she called during the last case, and she tells Conan about the existence of her second older brother who is very smart. Confronted with another murder case, Sera texts Shukichi about the situation and her logic. Sera also informs her brother than Conan seems to have figured out the case, but she isn't sure of her answer since her confidence has been shaken as of late. Her brother texts Sera asking who she keeps talking about. Sera sends him a picture of Conan and Shukichi replies that "it is no problem" if it is Conan doing the deducing, after all Shukichi had a good experience with Conan's deductions in [[The Ex-Boyfriend Living Next to a Crime Scene]].

Masumi is very surprised and wonders how her brother knows Conan. Her suspicion makes sense because she knows that Conan didn't exist prior to Shinichi shrinking.<ref name=861p4>Manga Volume 81, File 11 (861), pg 4: "Just like Magic"</ref> The brother later sends another text to Masumi which most likely said something about how he met Conan during a case before. This makes Masumi react "Ah, I see. So ''that's'' how it is."<ref name=861p15-16>Manga Volume 81, File 11 (861), pg 15-16: "Just like Magic"</ref> At the end of the unseen message is a PS asking if she has "already met the wizard." Sera looks over at Conan and thinks "You could say so..." while sending a reply.

===Shogi Tournament (Manga: [[Volume 85|899-902]], Anime: [[Taiko Meijin's Match of Love|785-786]])===
Shukichi won important matches to help him win his 4th, 5th and 6th titles. Before he begins his title match to become only the 2nd Nanakan-ō shogi player with all 7 titles) in history, he receives a letter. He opens the letter only to find out that Yumi was kidnapped and is trapped in a well. The letter contains clues pertaining to the whereabouts of Yumi. He arrives at the location but cannot find the well. Upon the arrival, he bumps into Conan and the Detective Boys who immediately ask the real purpose of Shukichi. The match is postponed as Shukichi attempts to win both the battle of shogi and love.

=== A Killer in Ramen Ogura (Manga: [[Volume 88#A Killer in Ramen Ogura|928-930]], Anime: [[Ramen So Good, It's to Die For 2|827-828]])===
Shukichi and [[Akai family's middle brother|Masumi's second-older brother]]'s favorite phrase is the same: ''I'm skillful at memorizing such things. I'm the best in Japan... No, maybe even the best in the world.'' Shukichi said the phrase in [[The Ex-Boyfriend Living Next to a Crime Scene|Episode 731]]. Sera calls her brother at the same time Yumi calls Shukichi. However, Sera's brother tells her he's talking to someone important and hangs. It turns out Shukichi knows some important facts about the case culprit and became helpful to Yumi and the investigation.

=== Shukichi's Envelope Case (Manga: [[volume 89#Shukichi's Envelope Case|945-947]], Anime: [[The_Marriage_Registration%27s_Password|849-850]]) ===
Parts of Shukichi's family information appeared on Shukichi's marriage registration form:
* The father's name appears to be {{nihongo|'''Tsutomu Akai'''|赤井務武|Akai Tsutomu}}.
* The mother's given name is {{nihongo|'''Mary Sera'''|メアリ世良|Mary Sera}}.

{| style="float:left;"
|-
| style="vertical-align: top"|[[File:Shukichi's marriage registration.jpg|thumb|x180px|right|Shukichi's marriage registration (File 947)]]

| style="vertical-align: top"|[[File:Shuukichi Father Akai family name 947.png|thumb|x150px|right|Englargement of Shukichi's marriage registration form, showing the section for parents.]]
| style="vertical-align: top"|[[File:Marriage Form Anime.jpg|right|thumb|200px|Anime version (1).]]
| style="vertical-align: top"|[[File:Marriage Form Anime 2.jpg|right|thumb|200px|Anime version (2).]]
|}
{{clear}}

It also came out that Shukichi has a non-blood-related brother named {{nihongo|'''[[#Kohji Haneda|Kohji Haneda]]'''|羽田浩司|Haneda Kōji}}.

=== A Chance Meeting at the Beach (Manga: [[Volume_92#A_Chance_Meeting_at_the_Beach|972-974]], Anime:TBA) ===

== Hints that Shukichi was the Akai family's middle brother ==
[[File:Akai Middle Brother's hand manga.png|thumb|right|280px|The middle brother's hand and cellphone]]
*Shukichi was in the right age range for the middle brother. The middle brother's former high school classmates are currently 28 and 29 years old, suggesting that the middle brother is similarly aged.
*Shukichi is very intelligent as the middle brother was described. When Conan and Shukichi encountered each other during a case, Shukichi noted that Conan is an excellent detective. Later Shukichi asked Masumi about the detective she was always talking talking about, not realizing he had already met this person before. Masumi shows her brother Conan's picture thinking he will be surprised. Shukichi replies back that "if it's him, then there's no problem"; he had met Conan previously after all.
* Shukichi is right handed and has pale skin, matching the phone-holding hand of the middle brother.
* Both [[Shuichi Akai]] and [[Mary]] took special interest in the outcome of Shukichi's Shogi matches. Masumi, who had earlier stated that she had no idea where the middle brother is or what he is up to did not recognize Shukichi in his match.
* When Yumi and Sera together described Shukichi and her brother respectively, they were identical. Both wear round glasses, have stubble, wear 'messy jerseys', have excellent memories, and share the exactly same favorite saying.

==Relationships analysis==
===Yumi Miyamoto===
''Main article: [[Shukichi Haneda and Yumi Miyamoto]]''
[[File:ShukichiYumiKiss.jpg|Yumi surprises Shukichi |right|thumb]]
Shukichi Haneda and [[Yumi Miyamoto]] first met when the latter was still in college, and had begun dating since then until Yumi eventually broke up with him because she thought he was immature. Shukichi is completely oblivious to Yumi breaking up with him and he still thinks of her as his girlfriend as if nothing has happened. Yumi, on the other hand, refers to him as an ex and doesn't show much interest in his personal life. Despite this, it appears she still has some feelings for him.

Their relationship began to relapse after Shukichi was caught up in a murder case in his apartment complex. Despite Yumi acting standoffish most of the time, they start using pet names for each other once again. They even exchanged a kiss before Shukichi continued his shogi match to win the seventh title. By the time Yumi figured out Shukichi's real identity, Shukichi was regularly meeting with her. All of this time, Yumi still insisted on calling him an ex.

Yumi was unaware of Shukichi being a famous shogi player for a long time, mostly due to her lack of interest in investigating, and an apparent personal disinterest in shogi (she is more of a Mahjong type). She assumed Shukichi was a "meijin" at some minor game like shiratori or fishing. She eventually saw Shukichi on television and figured it out. After realizing that meijins can make 100,000,000 yen in salary, she desperately tries to reclaim the letter he left for her, which her ornery building manager had seized.

=== Masumi Sera ===
Shukichi was 10-11 years old when Masumi was born, and he was, unlike Shuichi, close during her childhood until she was seven and finally introduced to their older brother. Despite the ten year age separation between [[Masumi Sera]] and her moving abroad, nevertheless she and Shukichi kept in contact by phone. [[Masumi Sera]] frequently calls him to ask about case solutions.<ref name=859p6-7>Manga Volume 81, File 9 (859): pgs 6-7: "Jeet Kune Do vs. Karate"</ref> Shuukichi appears to have avoided telling Masumi anything about his Shogi skills or what he has been up to. She has no idea where he is living.<ref name=859p6-7/>

=== Kohji Haneda ===
Kohji was a talented shogi player that his "not-related-by-blood"<ref>Shukichi was a {{lang|ja|義理の兄}} to Kohji: an adopted brother or step brother, rather than a blood brother.</ref> brother, [[Shukichi Haneda]], deeply respected. Many had high hopes that Kohji would win all seven of the major shogi titles, but his death prevented it. It's likely that Shukichi changed one of his name characters slightly to honor the late Kohji.

=== Shuichi Akai ===
[[Shuichi Akai]] keeps track of [[Shukichi Haneda]]'s shogi matches. During a reunion ten years ago Shukichi shows concern over his brother's choice of path in life.

=== Mary ===
[[Mary]] is Shukichi's mother. While stuck in the body of a middle schooler, she is shown keeping track of [[Shukichi Haneda]]'s shogi matches.
She smiled when he became the seven-crowned king.

===Conan Edogawa===
Shukichi seems to have noticed [[Conan]]'s intelligence and trusted his deductions the first time they met. He even writes to his sister, that it's all right if Conan make the deductions. Shinichi has met Shukichi in the past as a child, so it's possible that Shukichi might recognize him as Conan because of his memorization skills.

=== Chikara Katsumata ===
[[Chikara Katsumata]] is Shukichi's only shown Shogi rival and the holder of the one of the seven main Shogi titles. He claimed the seventh title from Katsumata in [[Taiko Meijin's Match of Love]]. Shukichi then lost a revenge match to Chikara in [[Volume 81|Shukichi's Envelope Case]], leaving him with only six titles.

==Name origin==
According to Gosho, the full name {{nihongo|Shukichi Haneda|羽田秀𠮷|Haneda Shūkichi}} and the in-story nickname {{nihongo|Taiko|太閤|Taikō}} are both references to [[wikipedia:Toyotomi Hideyoshi|Hideyoshi Toyotomi]] ({{Lang|ja|豊臣 '''秀吉'''}}), who was previously named Hideyoshi Hashiba ({{Lang|ja|羽柴 '''秀吉'''}}).<ref>[[Volume 80|Volume 80, File 849, page 15: "Taiko's Optimal Moves"]]</ref> Additionally, Haneda's "Hane" ({{lang|ja|羽}}) also comes from [[wikipedia:Yoshiharu Habu|Yoshiharu Habu]] ({{lang|ja|'''羽'''生善治}}), a real-life professional shogi player who has won all seven titles.<ref>http://ddnavi.com/news/191132/ Translation: http://www.detectiveconanworld.com/forum/topic/1555-translating-interviews/?p=316639</ref> Gosho also revealed that the "kichi" part of his name comes from [[wikipedia:ja:阪田三吉|Sankichi Sakata]] ({{Lang|ja|阪田三'''𠮷'''}}) in an [[Animal Crossing promotional hints|''Animal Crossings'' Promotional Hint]] on January 18, 2016.

There is one wrinkle in the above information. Because of Shukichi's backstory related to [[Kohji Haneda]], then the true source for Haneda ({{Lang|ja|羽田}}) is likely the [[List_of_Black_Organization_related_characters#APTX_4869_Victims|list of people killed by]] [[APTX 4869]], and Gosho's shogi source explanation was ex post facto. There are only two ways for both Gosho's shogi source explanation and the List of APTX 4869 victim source to be true. One is that Gosho decided on the name Haneda, and then noticed the name on the list and came up with additional backstory for Shukichi on the spot, or that Gosho planned out Haneda's backstory in Volume 18, 15 years before he was actually introduced. That second explanation is perhaps a bit of a stretch, as Masumi Sera was only created in response to the positive fan reaction to female detective [[Natsuki Koshimizu]], some eight years after volume 18 was published.

Shukichi's prior surname {{Nihongo|Sera|世良|Sera}} is from the [[wikipedia:Mobile Suit Gundam|Mobile Suit Gundam]] character {{Nihongo|[[wikipedia:Sayla Mass|Sayla Mass]]|セイラ・マス|Seira Masu}}.<ref>[[Sherry's soliloquy|Sherry's soliloquy (2012-06-17)]], Gosho was referring to the revelation that Sera is Akai's sister (Manga File 821): やっぱりアルテイシアだったのね・・・ (So it was '''Artesia'''…). Note that "Artesia" is another name of '''Sayla Mass'''.</ref> Shukichi's oldest surname "Akai" comes from the [[wikipedia:Mobile Suit Gundam|Mobile Suit Gundam]] character [[wikipedia:Char Aznable|Char Aznable]], whose nickname was the {{nihongo|"Red Comet"|'''赤い'''彗星|'''Akai''' Suisei}}.

==Quotes==
{{cquote|I'm skillful at memorizing such things. I'm the best in Japan... No, maybe even the best in the world.}}

{{cquote|Well, I guess the story just turned into me gushing about Yumi-san... But I live in the shogi world, where making people wait is unacceptable.|Shukichi, after telling his story about his first met with Yumi to Detective Boys, File 900 pg 8}}

==In other languages==

==Trivia==
* Shukichi is right-handed.
* In File 946, Yumi reveals that she nicknames him 'Chukichi' because he keeps eating cheese like a rat which makes a noise that sounds a lot like 'Chu'.

==Gallery==

==See also==
* [[Shukichi Haneda Appearances]]
* [[Yumi Miyamoto]]
* [[Kohji Haneda]]
* [[Characters]]
* [[Akai family]]
* [[Shukichi Haneda and Yumi Miyamoto]]
* [[Akai family's middle brother archive|Archive of the "Akai family's middle brother" page prior to the official reveal]]
* [[wikipedia: Meijin (shogi)|Meijin]]

==References==
<references />

{{Characters}}

{{DEFAULTSORT:Haneda Shukichi}}
[[Category:Characters]]
[[Category:Male characters]]

[[de:Shukichi Haneda]]

File:Mary Sera 60px.jpg

2017-03-20T18:53:02Z

8627937131f701a286774c43a25313a3:

Shuichi Akai

2017-03-20T18:52:42Z

8627937131f701a286774c43a25313a3: /* Appellations */

{{FeaturedArticle|11th April 2014}}

{{SpoilerWarningArticle|This article contains significant '''[[Glossary#Spoiler|spoilers]]''' about major events concerning this person. It is likely you will be spoiled if you have not read all the manga released to date. To find out what pages will be safe for you to read, please consult our [[Glossary#Spoiler|wiki spoiler policy]].}}

{{redirect|Akai|other uses|Akai (disambiguation)}}

{{InfoBox Char
| name = Shuichi Akai
| japanese-name = {{lang|ja|赤井秀一}} (Akai Shūichi)
| english-name =
| image = Shuichi Akai Profile.jpg
| age = More than 28<ref>[[Akai family's middle brother]] is 28 years old</ref> 27 as [[Subaru Okiya|Subaru]]
| gender = Male
| relatives = [[Tsutomu Akai]] (father, deceased) [[Mary Sera]] (mother) [[Shukichi Haneda]] (younger brother) [[Masumi Sera]] (younger sister)
| occupation = FBI Agent
| nicknames = Shu ([[Jodie Starling|Jodie]]) Dai-kun ([[Akemi Miyano|Akemi]]) Akai-kun ([[James Black|James]]) Silver Bullet ([[The Boss of the Black Organization|The Boss]] & [[Vermouth]]) Shu-nii ([[Masumi Sera|Masumi]]) Niisan ([[Akai family's middle brother]])
| aliases = Rye Dai Moroboshi [[Subaru Okiya]]
| first-appearance = Manga: [[Volume_29#Bus_Hijacking_Case|File 287]] Anime: [[The Mysterious Passenger|Episode 230]]
| appearances = {{:Shuichi Akai Appearances}}
| cases-solved =
| keyhole = [[Volume 37]] [[Volume 60]] (Subaru Okiya)
| japanese-voice = [[Shuichi Ikeda]]
| english-voice =
| footnotes =
}}
'''{{nihongo|Shuichi Akai|赤井秀一|Akai Shūichi}}''' is an [[Federal Bureau of Investigation|FBI]] agent and a major figure in the battle against the [[Black Organization]]. He once assumed the identity of '''{{nihongo|Dai Moroboshi|諸星大|Moroboshi Dai}}''' and infiltrated the Organization, where he was given the codename '''{{nihongo|Rye|ライ|Rai}}'''. During this time he made enemies with [[Gin]] and became romantically involved with [[Akemi Miyano]]. He is the older brother of [[Akai family's middle brother|the middle brother]] and [[Masumi Sera]].

== Background ==
[[File:Long haired Akai.PNG|thumb|160px|right|Shuichi as "Dai Moroboshi" during his infiltration of the Black Organization.]]
Shuichi Akai is an American of Japanese descent, originally from England, and is a member of the American Federal Bureau of Investigation, on special assignment in Japan to capture [[Vermouth]]. His superior is [[James Black]] and his partner is [[Jodie Starling]].<ref>Manga Chapter 434: Rotten Apple 5</ref> He had infiltrated the Black Organization under the name Dai Moroboshi - and the codename "Rye" - as a mole<ref>Manga Chapter 599: Akai's Past</ref> and dated [[Akemi Miyano]], one of their low-ranking members, to feed information to the FBI. In order to facilitate the latter, and later because he had genuinely developed feelings for Akemi, Shuichi saw himself forced to break up his then on-going relationship with Jodie.<ref>Manga Chapter 677: The Fated Individual</ref> Later on, his cover in the Black Organization was accidentally blown by his colleague [[Andre Camel]], and when Akemi was killed, he declared her murderer, [[Gin]] (with whom he seems to have had some tensions even before his exposure), his personal enemy.<ref>Manga Chapter 504: Black Organization vs. FBI 2</ref>

=== The Death of his father ===
17 years prior to the series, Shuichi's father got himself involved in the murder case of Koji Haneda and Amanda Hudges and disappeared. In his last message he instructed his family, Shuichi, his pregnant mother Mary and his younger brother Shukichi, to hide in Japan, but Shuichi, determent to uncover his father's incident, convinced his mother to let him study in America. After he left Japan, his younger sister Masumi was born. He didn't get to meet her before he return to Japan after seven years in the states, but Shukichi would send him pictures of her. After he had finish school, he joined the FBI.

=== Infiltration of the Black Organization ===
Five years prior to the current time-line, [[Federal Bureau of Investigation|FBI]] agent Shuichi Akai infiltrated the [[Black Organization]] using the alias Dai Moroboshi as a mole and dated [[Akemi Miyano]], one of their low-ranking members, in order to meet [[Shiho Miyano]], a high-ranked member codenamed Sherry, and use her influence to get into the Black Organization.<ref name=599p9>Manga Volume 58, File 2, pg 9: "Akai's Past"</ref> Although at first he was simply using Akemi as a tool, they both fell in love with each other. Shuichi distinguished himself as an agent and two years prior to the current time-line received the codename Rye and was called to work under executive agent [[Gin]]. The FBI laid a trap hoping to capture Gin at a warehouse where the meeting was supposed to take place,<ref name=599p9/> but the Black Organization discovered Akai's true allegiance and Gin never appeared.<ref name=599p10>Manga Volume 58, File 2, pg 10: "Akai's Past"</ref>
He broke up with Akemi to project her and he lost contact with her after the mission to capture Gin failed. Two years later Akemi got killed by the organization to cut loose end.

== Personality ==
Shuichi is a tenacious but stoic agent. Even in personal matters, he remains cool, even detached, from anyone, but his redeeming value is a great sense of loyalty to anyone he knows. He is a skilled and relentless pursuer and detective, qualities which have labeled him the number one enemy of the [[Black Organization]] and earned him the nickname "[[Silver Bullet]]". He looks forward to opportunities to hunt the Black Organization down and get revenge for [[Akemi]]. While usually professional, he often acts independently of the FBI, and even his boss [[James Black]] has trouble getting ahold of him. Shuichi gets along well with Conan, who share many personality traits. Despite that he has American citizenship, he still considers England as his home country.

James Black says Shuichi is an introverted person who doesn't easily get close to people and he has become even more closed off since Akemi's death.<ref name=502p13>Manga Volume 49, File 2, page 13: "New Order"</ref> He doesn't often say what he is thinking. Shuichi has an unhealthy tendency to prioritize his missions above the emotional wellbeing of his friends, coworkers, family, and love interests.<ref>Shuichi's fake death, while preserving Kir and allowing her to pass info to the FBI, has caused significant dysfunction within the FBI who believe him to be truly dead. While Shuichi has been technically fulfilling the promise he made to look after Haibara's welfare as Okiya, he has executed it in such a way that Haibara was terrified of his presence and refused to be alone at the Agasa house when he was around.</ref> Conflict between his missions and the interests of those he cares about has lead to significant sorrow for him<ref>Shuichi didn't inform Akemi he was an FBI agent despite being in love because it might jeopardize his mission (and his relationship). Even though Akemi figured out Shuichi was an FBI agent and wished to leave the Organization and date him seriously, she kept it secret from him either because she was not sure how he would react, or because she thought it could cause him harm. Thus, the infiltration mission was the root cause of their secretkeeping which prevented them from coming up with an exit strategy for Akemi in case the mission failed. The following chain of events led to Akemi's death.</ref> and others.<ref>Shuichi's faked death to save Kir's mission and get her to pass information to the FBI as well demoralized the FBI, especially Jodie. Shuichi's infiltration mission required that he seduce Akemi even though he was dating Jodie at the time. When he fell in love with Akemi for real, Shuichi decided to break it off with Jodie. When justifying his decision to Jodie, he mentioned that he didn't want the onus of loving two women at once, but he also mentioned he thought the "sacrifice" was important to his mission to destroy the Black Organization. This implies that love was not the only factor in Shuichi's decision, he thought choosing Akemi over Jodie would help his mission -- perhaps because he was afraid he would be caught as a spy if anyone discovered his relationship with Akemi was fake. [http://forums.dctp.ws/viewtopic.php?f=5&t=980&p=16431#p16431]</ref>

Shuichi prefers to plan secretly, and will readily trick his friends and coworkers, even injuring them, if helps the success of his missions.<ref>FBI vs Org, Shuichi didn't tell the rest of the FBI he would cover Kogoro's agency. In Red vs Black, the return Kir plan and the fake death plan were both kept secret from the FBI. He ordered Camel to remove by force if necessary anyone who interfered which resulted in Jodie being knocked out. He later told Kir to hit Camel for real to make her escape look authentic.</ref> Shuichi is often forgiven for these transgressions because his judgment is usually sound and his plans work out well.<ref>In FBI vs Org, Shuichi was forgiven for covering Kogoro without telling his boss and for making the decision on his own to let the Black Organization leave without much resistance because he thought it might lead to a dangerous firefight downtown. In Red vs Black, Shuichi was forgiven after being told off for hiding his secret plan to return Rena to the Org.</ref> Shuichi's secret plans, while strategically robust in the short term, often cause emotional problems for others that he does not fully appreciate.<ref>In particular, his faked death had a major impact on the FBI and [[Jodie Starling]]. [[Rei Furuya|Bourbon]] was able to take advantage of the emotional confusion surrounding his death to approach the FBI for his own ends. Jodie's sorrow has reduced her effectiveness and led her to blunder into dangerous situations.</ref>

Even though he means well, Shuichi is notably clumsy at trying to comfort and connect with others. He is especially dense at recognizing the motives behind the feelings of others and thus how to modify his own behavior to improve relations. As [[Subaru Okiya]], his technique to approach [[Ai Haibara]] leaves her terrified of him, and repeated contact only intensifies her loathing. Ten years ago, he was also cold to young Masumi on their first meeting, brushing Masumi's silly antics aside without realizing that she simply wanted him to smile and treat her kindly, though he most likely was simply in a bad mood, since he just had an intense argument with his mother, in which they traded physical blows, because of his plan to join the FBI after his studies to pursue the case of his father and because he had lied to her about that. Later that day, during the investigation of a case, Shuichi gives both Shinichi and Ran a task to help with the investigation, so Masumi approaches Shuichi shyly and asks for a task as well. Now Shuichi responds kindly and gives her a task that makes her feel important. 
Despite his social awkwardness, Shuichi is not unempathetic; he gives Jodie some hope by leaving her a message in his own handwriting, and leaves her a very roundabout hint about his identity after knocking her down even though he cannot reveal the truth to her yet. Eventually he also realized that Masumi was looking up to him, so he began to send her videos of him doing Jeet Kune Do.

== Appearance ==
Shuichi is a tall man of Japanese descent with short wavy hair. His trademark features, by which people close to him have identified him are his eyes which have permanent bags underneath them that make him appear sleep deprived. Other characters often describe him as evil eyed or having a sharp gaze. His eyes are blue in the manga (like every other character) and green in the anime. He and [[Masumi Sera]] presumably more closely resemble their mother then their father.
The second trademark feature is his knit cap, which he is always shown wearing. When he was younger he had a grey fedora which Masumi now wears herself. Up to one year ago, he had very long waist length hair, which he cut after the death of Akemi Miyano "to freshen up." Shuichi is left-handed. He is a heavy smoker and his favorite drink is bourbon.

His outfit is a grey jacket on top of a collared black shirt, black pants, shoes, and his trademark black knit cap.

== Abilities ==
=== Intelligence ===
[[File:783-5.jpg|thumb|Conan ft. Shuichi]]


Shuichi is capable of thinking on par with Conan. He once set up a sniper ambush at a nearby building, knowing that the Black Organization will come and try to kill Kogoro. He also mentioned that he knew that "making them think the FBI set up the transmitter was the priority."<ref>Anime Episode 425: Black Impact! The Moment the Black Organization Reaches Out</ref>

=== Firearms and Sniping ===
[[File:The Scarlet Return-Shooting Shuichi.jpg|thumb|left|Shuichi aiming with a Glock]]
Shuichi, is the most capable sniper shown so far, to the point of shooting a small piece of gum out of Gin's hand from about 700 yards away, which is a lot more than the range of Black Organization's professional snipers [[Chianti]] and [[Korn]]. He also managed to get a shot on Gin from the same distance.<ref>Anime Episode 425: Black Impact! The Moment the Black Organization Reaches Out</ref>
Shuichi is good at handling shotguns as well; he accurately shot Vermouth from the hip faster than she could aim at him with her subcompact pistol.
He is a sharpshooter with a handgun as well, capable of busting a moving car's tire from a speeding car with just a single shot.<ref>Manga Volume 85 File 4 Page 5</ref>

Shuichi uses Calvados' SPAS-12 shotgun to bring down Vermouth, an Arctic Warfare Magnum sniper rifle to shoot Gin, and [[Rikumichi Kusuda]]'s Glock pistol to disable Rei's subordinates.

Akai is unusual in that he is "eye-bidextrous" while shooting. Like hands and feet, most individuals have a dominant eye they prefer to use when lining up a shot, but Shuichi is shown using both eyes at different times.<ref>Left eye for shooting Vermouth in New York, left eye for sniping Gin in Black Impact, Right eye for shooting Rei's subordinates' car in Scarlet Showdown.</ref>

=== Driving ===
Shuichi is a skilled driver. He can overtake many cars quickly in heavy traffic conditions and drift around a u-turn.<ref name=420p14>Manga Volume 41, File 7, page 14: "The Enclosing Surrounding Net" </ref> He drove a [[Cars|Chevrolet C1500]] which was later bombed by Rena.

=== Martial Arts ===
Shuichi is also a highly proficient hand-to-hand combatant. Having extensive skill and knowledge of Jeet Kune Do, he taught his sister Sera much, who openly acknowledges him to still be much stronger than her.<ref>Episode 744</ref>

===Cooking===
[[File:783-4.jpg|thumb|Jodie and Camel are shocked to learn that Shuichi can cook]]
Shuichi learned how to cook thanks to [[Yukiko Kudo]].<ref>[[The Scarlet Return]]</ref>

===Disguise===
Shuichi is able to do a proper disguise thanks to Yukiko Kudo and equipment from [[Hiroshi Agasa|Professor Agasa]].

{{clear}}

==Appellations==
<tabs jsId="nicknames">
<tab title="Friends & relatives">
{{appellations/head|Shuichi}}
{{appellations|Mary Sera|Shuichi<ref name="file974">[[volume 92#A Chance Meeting at the Beach|File 974 (Volume 92)]]</ref>|Mom (''Kāsan'')<ref name="file972" /> Mother (''Haha'')<ref name="file972" />}}

{{appellations|Tsutomu Akai|-|Father (''chichi'')<ref name="file949">[[Volume 90#The Clenched Scissors and the Clipped Letters|File 949: Sweet Scent (Volume 90)]]</ref>}}

{{appellations|Shukichi Haneda|Niisan<ref name="file972">[[volume 92#A Chance Meeting at the Beach|File 972]]</ref> Shuichi-niisan<ref name="file972" />|Shukichi<ref name="file972" />}}

{{appellations|Masumi Sera|Shu-nii Oniichan<ref name="file972" /> Akai Shuichi<ref>[[volume 89#Girls Band Murder Case|File 938]]</ref> Aniki<ref name="file936">[[Volume 88#Girls Band Murder Case|File 936]]</ref>|Masumi}}

{{appellations|Conan Edogawa|Akai-san<ref name="file974" /> ''Oniisan''<ref>[[Volume 81#Bumper Brawn|File 859 (Volume 81)]]</ref> Akai Shuichi|Boy (''Bōya'')}}

{{appellations|Ai Haibara|Moroboshi Dai<ref>Manga File 802, pg 10: "Don't make that kind of face..."</ref> That Akai person|That brown-haired girl}}

{{appellations|Akemi Miyano|Dai-kun|''Omae''}}

{{appellations|Yukiko Kudo|Shu-chan ([[Gosho Aoyama|Gosho]]'s thought)<ref name="niisanshuchan">[[:File:Postcard2016 18.jpg]] (Yukiko calls him "Shu-chan")</ref>|Yukiko-san (as Subaru)}}

{{appellations|Hiroshi Agasa|Akai-san<ref name="file950">[[volume 90#The Clenched Scissors and the Clipped Letters|File 950: The Clipped Letters (Volume 90)]]</ref>}}
|}
</tab>
<tab title="Law enforcement">
{{appellations/head|Shuichi}}
{{appellations|James Black|Akai-kun Moroboshi Dai Rye|James}}

{{appellations|Jodie Starling|Shu<ref name="file897">[[Volume 85#Scarlet|File 897 (Volume 85)]]</ref> Akai-kun Akai Shuichi|Jodie}}

{{appellations|Andre Camel|Akai-san<ref name="file897" /> Akai-shan<ref name="file897" /> Akai Shuichi|Camel}}

{{appellations|Subaru Okiya|Akai Shuichi<ref name="file897" />|Okiya Subaru}}

{{appellations|Rei Furuya|Akai<ref name="file897" /> Akai Shuichi<ref name="file897" /> Rye<ref name="file955">[[Volume 90#Bourbon's Mission|File 955: Whereabouts of the Betrayal (Volume 90)]]</ref> Snoop dog of the FBI (''FBI no inu'') That man|Bourbon<ref name="file897" /> Amuro Tooru-kun<ref name="file897" /> Zero<ref name="file897" /> Furuya Rei-kun<ref name="file897" /> Wolf (''ōkami'')<ref name="file897" />}}

{{appellations|Hidemi Hondou|Akai Shuichi|Mizunashi Rena Kir}}

{{appellations|Ethan Hondou|-|Ethan Hondou NOC}}
{{appellations|Scotch|-|Scotch}}
|}
</tab>
<tab title="Black Organization">
{{appellations/head|Shuichi}}
{{appellations|The Boss of the Black Organization{{!}}The Boss|file=The Boss of the Black Organization.jpg|Silver Bullet|[[black Organization|Their]] Boss (''yatsura no Boss'')}}

{{appellations|Vermouth|Akai<ref name="file897" /> Akai Shuichi Silver Bullet|Vermouth Rotten Apple}}

{{appellations|Gin|Akai Shuichi Akai|Gin ''Koibito'' (literally "lover", but the intended meaning is "old enemy")}}

{{appellations|Rikumichi Kusuda|Akai Shuichi|Kusuda Rikumichi<ref name="file897" />}}

{{appellations|Calvados|-|Calvados}}

{{appellations|Rum|-|Rum<ref name="file950" />}}

{{appellations|file=M20 odd eyes woman.jpg|List of notable case characters#Curaçao{{!}}Curaçao|Rye|-}}
</tab>
<tab title="Others">
{{appellations/head|Shuichi}}
{{appellations|Ran Mouri|Your brother (''Oniisan''; talking to [[Masumi Sera|Masumi]])<ref>[[Volume 88#Girls Band Murder Case|File 937]]</ref> FBI person (''FBI no hito'')|''Omae''}}

{{appellations|Eisuke Hondou|-|NOC's son (''NOC no musuko'') Brother (''otōto''; talking to [[Hidemi Hondou|Hidemi]])}}

{{appellations|Sonoko Suzuki|Shu-nii<ref name="m18">Movie 18: ''[[Dimensional Sniper]]''</ref>}}

{{appellations|Shinichi Kudo|Akai Shuichi (movie introdcution)<ref name="m18" /> Pierrot Onii-san|Holmes' Apprentice-kun}}

{{appellations|Genta Kojima|Guy (''niichan'')}}
|}
</tab>
</tabs>

== Plot overview ==
=== Timeline ===
{{main|Shuichi Akai timeline}}

==Movies==

===Movie 18: [[Dimensional Sniper]]===
Shuichi appeared in this movie as [[Subaru Okiya]]. At first he is seen watching the detective boys testing Professor Agasa's invention. Later after [[Masumi Sera]] gets shot, he is seen leaving the hospital, where she is hospitalized. After that he is seen involving himself in the sniper investigation. He is the one who shoot the suspect at the last part . We can see too that he turn off his voice changer and said to [[James Black|James]] {{nihongo|"Roger"|了解|ryōkai}} as signal that it's already finished.

===Movie 20: [[The Darkest Nightmare]]===

== Speculation ==
[[James Black]]'s English background may have assisted the young British-Japanese Shuichi Akai in fast-tracking his way to a US citizenship and then enrolling in the FBI.

=== Identity of Shuichi Akai's younger brother ===
{{main|Akai family's middle brother}}

== Relationships analysis ==
=== Family & Friends ===
==== Akemi Miyano ====
{{main|Shuichi Akai and Akemi Miyano}}
Shuichi Akai and Akemi Miyano were lovers while he was infiltrating the [[Black Organization]]. Shuichi's original mission was to date Akemi Miyano in order to meet Shiho Miyano. Shuichi used Shiho's influence to gain rank in the Organization, intending to become trusted enough to meet with high level agents so the FBI could capture one for questioning. As [[James Black]] later recalls, although Shuichi's relationship with Akemi was merely a stepping stone, Shuichi actually fell in love with Akemi, and considered her his real girlfriend. Because of this he broke up with [[Jodie Starling]].

[[File:Akemi's Text Message.jpg|thumb|right|250px|The last text message Akemi had sent Shuichi, before her death.]]
Sometime later, Akemi develops the suspicion that Shuichi really wasn't who he claimed to be. After Shuichi's expulsion, he confirms that he is an FBI agent to her. To Shuichi's surprise, Akemi doesn't seemed surprised by this, so Shuichi asks her why she never said anything about her suspicions that she was being used by him before, and Akemi hints it is because she loves him. Initially, the Organization couldn't do anything about Akemi because they needed the loyalty of her sister, but two years later they decided that the risk of her contact with Shuichi was too much. They decided to create a situation where they could eliminate her by having her do a bank heist she was supposed to fail. Sometime near the day of the heist, Akemi sent Shuichi a long text message, asking him if he wants to be her real boyfriend when she is finally free from the Organization. After the heist, Akemi is killed by [[Gin]], and it is unknown how Shuichi responded if at all. Shuichi treasures her final text message, and keeps it in his phone many months after Akemi's death. The message also contains a P.S. which has not been revealed yet.

How Akemi and Shuichi met in the manga is unknown, but in the anime, Shuichi Akai originally met Akemi by an intentional accident. She accidentally hit him with her car when he deliberately walked into the street in front of her in order to be hit by her.<ref>Episode 497</ref> Akemi was concerned, and helped take him to the hospital, watching over him until he was better. When he woke up, he felt no anger over what she did, and even asked for her name, to which a very flustered Akemi replied, while he told her his fake name: Dai Moroboshi. After this they began dating.
{{clear}}

==== Jodie Starling ====
While Jodie and Shuichi's relationship had been viewed as mere colleagues, it is revealed later on in the series that Jodie and Shuichi had dated before about 5 years prior. However, after Shuichi infiltrated the Black Organization under the alias of Dai Moroboshi, he started dating Akemi Miyano in hopes of using her to attain information about the Black Organization. Despite this, Shuichi ended up falling in love with Akemi, leading him to break up with Jodie, stating that, "To be able to love two women at the same time…it's not that handy a personality."<ref name="677p5">Manga [[Volume 65]], File 3 (677), pg 5: "The fated individual"</ref> In spite of the break-up, Jodie still held strong feelings for Shuichi which never wavered as time passed and took his apparent death at Kir's hands especially hard, to the point of being reduced to tears.

====James Black====
[[James Black]] is the boss of the [[Federal Bureau of Investigation|FBI]] agents in Japan and therefore the boss of Shuichi. He was the only FBI agent to know that Shuichi was alive, but only because he saw the glue on Shuichi's fingers and would have otherwise also been kept in the dark.

====Andre Camel====
[[Andre Camel]] worked with Shuichi Akai before when he was an agent in the [[Black Organization]]. Camel was involved in the plan to capture Gin two years ago, but he gave away the plan of the FBI when he saw a member of the organization disguised as an old man. Because of this, Shuichi's identity became known to the Organization. However, Shuichi does not seem to bear a grudge against Camel but worked together well. Camel is willing to help Akai in any way he can to redeem for his mistake.

==== Ai Haibara ====
When Haibara first met Shuichi, she thought he was a member of the Black Organization. Shuichi seems to know of Haibara's identity. Haibara knows him as Dai Moroboshi, her sister's boyfriend who betrayed the Organization.<ref>Manga Chapter 802</ref> Haibara should know Dai was a spy and FBI agent, after hearing an exchange between Bourbon and Kaitou Kid through a microphone<ref>Manga Chapter 824,[http://25.media.tumblr.com/4b40277b84692b54c491654534be7ccf/tumblr_mpc528w9hS1qfn9zio1_r1_500.png]</ref>, but she does not know him by the name Shuichi Akai. During his time in the organization he became acquatained with Haibara, while she was still known as Shiho Miyano, through Akemi and make use of it to slip into the organization. He made a promise with Akemi to look after Haibara's welfare.<ref>Manga [[Volume 77]], Files 3-5 (809-811)</ref>
She doesn't know that it was because of the relationship between Akai and her sister, that got her sister killed.

==== Conan Edogawa ====
Shuichi and Conan get along well and are capable of thinking on par with one another. In the short time they have worked together, Shuichi has come to respect Conan's intellect and deductive skills and speaks to him professionally. After FBI had capture Kir, he asked who Conan was, hinting that he suspected that there was more to Conan that meets the eyes. He is also aware that [[Conan]] and [[Shinichi Kudo]] are really one and the same person <ref>Manga [[Volume 77]], File 813 p.16 and File 814 p.3 </ref>. There is further speculation amongst fans that Shuichi has figured out that Ai was formerly Sherry and (more than likely) learned about her research for the Black Organization and the two possible effects of [[APTX 4869]].

==== Masumi Sera ====
[[Masumi Sera]] is Shuichi's younger sister. Masumi wasn't born yet, when Shuichi went to America to study. So they first got to meet each other, when Masumi was seven. It's indicated at Shuichi cares for his sister. During the mystery train case, when Masumi was knocked out by Vermouth and hidden in her room, Shuichi (disguised as Subaru) carried her back to her own room. As he was about to leave he overheard her calling out 'Shuu-nii' in her sleep, which made him smile. And in the movie [[Dimensional Sniper]] he (as Subaru) was seen leaving the hospital, where Masumi was hospitalized after getting shot, hinting that he was visiting her, while she was unconscious and left a bouquet in her room, which Ran and Sonoko finds.

[[Mary|Shuichi's mother]] hoped that Shuichi would become a father figure to Masumi to replace their missing biological father. While Masumi was growing up, Shuichi would send her training tapes of Jeet Kune Do that she could practice after.

==== Akai family's middle brother ====
To avoid unintentional spoiling, please click the link for information on the [[Akai family's middle brother]].

=== Allies ===

==== Hidemi Hondou ====
Hidemi is a CIA agent undercover in the Black Organization as Rena Mizunashi, codenamed Kir. She agreed to supply the FBI with information of the organization in return for her brother's protection. She, Akai and Conan worked out the plan to send Hidemi back to the organization and fake Akai's death.

=== Black Organization ===

==== Gin ====
{{main|Gin and Shuichi Akai}}
Shuichi Akai and Gin are rivals and hate one another. It is implied that they didn't get along even before Shuichi was exposed as an undercover FBI agent. Shuichi refers to Gin as "Koibito", which ironically means 'lover.' Gin killed Shuichi's love Akemi, so Shuichi thinks of Gin as his archenemy.

==== Bourbon ====
Shuichi Akai and [[Rei Furuya|Bourbon]] are stated to be enemies. It's been stated that Bourbon hated Shuichi more than Gin did. Bourbon believed himself to be the only one capable of killing Shuichi, and refused to believe that Shuichi was dead. Shuichi feels neutral toward Bourbon, saying that he is not someone that he wants as an enemy.

Bourbon's hate of Shuichi is explained in the manga: Between four years ago and two years ago, Shuichi was found by Bourbon, standing over Scotch's dead body holding a smoking gun. Ever since then Rei has blamed Shuichi and has sought out to kill him. In reality, Shuichi tried to stop Scotch from commiting suicide, but Scotch pulled the trigger on himself because he thought that his undercover operations were found out. To protect Scotch's secrets, Shuichi made it look as if he had killed him.

=== Unknown relationships ===
==== Kohji Haneda ====
A relationship between Shuichi and [[Kohji Haneda]] is unknown, but [[Volume 89#The Clenched Scissors and the Clipped Letters|the case of Kohji's death]] made Shuichi an FBI agent.<ref name="file948">[[volume 89#The Clenched Scissors and the Clipped Letters|File 948: The Clenched Scissors (Volume 89)]]</ref>

== Character popularity ==
* eBookJapan held a character popularity poll from April 12, 2011 to May 12, 2011 in which readers of Detective Conan (international included) could vote for their favorite character. Shuichi placed 12th in the poll with 53 votes out of the 5,883 that were cast.<ref>{{cite web|url=http://www.ebookjapan.jp/ebj/special/conan/vote_kekka2.asp|title=『名探偵コナン』人気投票結果|date=2011-05-12|publisher=eBookJapan|accessdate=2011-05-15}}</ref>

* In honor of the release of the 800th manga chapter, Shonen Sunday held a popularity poll/contest containing 91 Detective Conan characters to choose from. Shuichi placed 7th overall with 415 votes.<ref>{{cite web|url=http://forum.dctp.ws/index.php?topic=8024.msg651566#msg651566|title=Shonen magazine detective conan official poll results published [magazine pic]|date=2012-02-28|publisher=eva|accessdate=2012-02-29}}</ref>

== Name origin ==
[[File:Akai.gif|image|right|thumb|Gosho Aoyama draws Shuichi as half of Char on his website]]
Akai's name comes from the [[wikipedia:Mobile Suit Gundam|Mobile Suit Gundam]] character [[wikipedia:Char Aznable|Char Aznable]], whose nickname was the {{nihongo|"Red Comet"|'''赤い'''彗星|'''Akai''' Suisei}}, and Char's voice actor [[Shuichi Ikeda|'''Shuichi''' Ikeda]] (who is also Akai's voice actor). Additionally, his alias, Dai Moroboshi, comes from Char's real name, Casval Rem '''Deikun''' (sounds like '''Dai-kun''' in Japanese). '''Moroboshi''' can also mean ''falling star'', another possible allusion to ''Red Comet''.<ref>In Moroboshi (諸星), the first kanji can be broken up into 言者 which when pronounced as げんしゃ (gensha) sounds very similar to the word for "phenomenon" (genshou). The second character (星) means "star". Moroboshi, read as "Star phenomenon" references falling stars or maybe comets. </ref>

== Different looks ==
{|
| style="vertical-align: top" | [[File:Shuichi_Before.jpg|thumb|left|x200px|Shuichi's "Before" Appearance (Episode 259)]]
| style="vertical-align: top" | [[File:Shuichi_Middle.jpeg|thumb|left|x200px|Shuichi's "Middle" Appearance (Episode 345)]]
| style="vertical-align: top" | [[File:The Scarlet Return-Shooting Shuichi.jpg|thumb|left|x200px|Shuichi's "After" Appearance (Episode 783)]]
|}

== Quotes ==
{{cquote|Fear of death is worse than death itself.|Said to Camel.<ref>[[Volume 58#File_602_-_Last_Resort|Volume 58, File 602, Page 13]]</ref>}}
{{cquote|Don't make that kind of face...}}
{{cquote|Don't get distracted by what's in front of you and pursue the wrong prey}}
{{cquote|The odds are 50/50 so we are on the same boat.}}

== Trivia ==
* Shuichi is left-handed.
* Shuichi is a Jeet Kune Do practitioner who is three times stronger than [[Masumi Sera|Masumi]]. The three times is, again, a reference of Char's mobile suits being three times stronger than normal suits.
* Shuichi Akai's voice actor, [[Shuichi Ikeda]], is the real-life husband of [[Akemi Miyano]]'s voice actress, [[Sakiko Tamagawa]].

==In other languages==
{{BeginTable CharLang}}
{{CharLangItem|flag=Japan|Japanese|秀一 Shūichi|赤井 Akai}}
{{CharLangItem|flag=Arab League|Arabic|شوتشي Shūchi|أكاي Akāi}}
{{CharLangItem|flag=Indonesia|Bahasa Indonesia|Shuichi|Akai}}
{{CharLangItem|flag=China|Chinese|秀一 Xiùyī|赤井 Chìjǐng}}
{{CharLangItem|flag=France|French|Shuichi|Akai}}
{{CharLangItem|flag=Italy|Italy|Shuichi, Suichi|Akai}}
{{CharLangItem|flag=Germany|German|Shuichi|Akai}}
{{CharLangItem|flag=South Korea|Korean|상윤 Sang Yoon|이 Lee}}
{{CharLangItem|flag=Malaysia|Malay|Shuichi|Akai}}
{{CharLangItem|flag=Thailand|Thai|ชูอิจิ|อากาอิ}}
{{CharLangItem|flag=Republic of China|Traditional Chinese|秀一 Xiùyī|赤井 Chìjǐng}}
{{CharLangItem|flag=Vietnam|Vietnamese|Shuuichi|Akai}}
{{EndTable}}

== See also ==
* [[Characters]]
* [[Subaru Okiya]]
* [[Scar Akai]]
* [[Masumi Sera]]
* [[Mary]]
* [[Akai family's middle brother]]
* [[Akai family]]
* [[Federal Bureau of Investigation]]
* [[Black Organization]]
* [[Rei Furuya]]
* [[wikipedia:Rye whiskey|Rye]] (Alcohol)

== References ==
<references/>

{{Characters}}
{{Template: Federal Bureau of Investigation}}

{{Black Organization}}

{{DEFAULTSORT:Akai Shuichi}}
[[Category:Characters]]
[[Category:Male characters]]
[[Category:FBI]]
[[Category:Black Organization]]
[[Category:Characters named after their voice actors]]
[[Category:Characters named after Mobile Suit Gundam characters]]
[[Category:Characters who know Conan's identity]]
[[Category:Characters who know Ai Haibara's identity]]
[[Category:Martial artists]]

[[de:Shuichi Akai]]

Masumi Sera

2017-03-20T18:51:42Z

8627937131f701a286774c43a25313a3: /* Appellations */

{{FeaturedArticle|March 23, 2011}}

{{SpoilerWarningArticle|This article contains significant '''[[Glossary#Spoiler|spoilers]]''' about major events concerning this person. It is likely you will be spoiled if you have not read all the manga released to date. To find out what pages will be safe for you to read, please consult our [[Glossary#Spoiler|wiki spoiler policy]].}}

{{InfoBox Char
| name = Masumi Sera
| japanese-name = {{lang|ja|世良真純}} (Sera Masumi)
| english-name =
| image = Masumi_Sera_Profile.jpg
| age = 16-17? 
| gender = Female
| date-of-birth =
| occupation = Teitan High School Student Detective
| relatives = [[Tsutomu Akai]] (father, deceased) [[Mary Sera]] (mother) [[Shuichi Akai]] (older brother) [[Shukichi Haneda]] (second-older brother)
| nicknames =
| first-appearance = Manga: [[Volume 73|File 768]] Anime: [[Deduction Showdown at the Haunted Hotel|Episode 646]]
| appearances = {{:Masumi Sera Appearances}}
| keyhole = [[Volume 73]]
| japanese-voice = [[Noriko Hidaka]]<ref>{{cite web|url=http://combination.jp/blog/2012/02/post-383.html|date=2012-02-01|accessdate=2012-02-01|title=新しいお仕事 | Blog | コンビネーション|publisher=combination Co.Ltd.|author=Noriko Hidaka}}</ref>
| cases-solved = 5
| footnotes =
}}
'''{{nihongo|Masumi Sera|世良真純|Sera Masumi}}''' is a high school detective in the manga and anime franchise ''[[Detective Conan]]''. She is the younger sister of [[Federal Bureau of Investigation|FBI]] agent [[Shuichi Akai]] and a practitioner of the martial art [[wikipedia:Jeet Kune Do|Jeet Kune Do]].

== Background ==
Masumi Sera is a high school detective and the younger sister of [[Federal Bureau of Investigation|FBI]] agent [[Shuichi Akai]]. She is the only daughter of [[Tsutomu Akai]] and [[Mary]]. 17 years ago, her father, before he disappeared, instructed his family to hide in Japan, where Masumi later was born. Her oldest brother had prior to her birth left Japan to study in America, so they first got to meet each other when Masumi was six-seven years old. Although she grew up in Japan during her elementary school years, she moved abroad three years ago with her mother, presumably due to Shuichi infiltrating the [[Black Organization]]. She has recently returned to Japan for some unknown reason. After meeting Conan, Ran, and Sonoko during a case, she transfers to [[Setting#Teitan High School (帝丹高校)|Ran's high school class]]. Masumi is skilled at [[Wikipedia:Jeet Kune Do|Jeet Kune Do]], a hobby encouraged by her brother Shuichi who mailed her instruction videos while in elementary school. She can fight on the same level as [[Ran Mouri|Ran]]. She seems to know that Conan is Shinichi and implies that she met Ran and Shinichi sometime in their past. Currently she is living with [[Mary]], whom she calls "Mama", at a hotel. She claims that she is provided for by a rich friend of her late father, but it hasn't been revealed who it is. Every time they encounter the possibility of information on Mary getting out, they end up moving to a new hotel under Mary's order. While Masumi is eager to seek help from Conan, Mary is skeptical of him.
She also has another older brother, and the three siblings has different last names. Sera is supposedly her mother's maiden name.

==Personality==
[[File:691-15.png|thumb|Masumi beats a gangster in [[Yusaku Kudo's Cold Case]]]]

Masumi has a cheery, sociable, boyish personality<ref>Manga Volume 73, File 9, Page 3, "Let's hear your brilliant deduction!"</ref> and is well liked by her classmates at Teitan High. On their first meeting, Masumi fails to correct Sonoko's mistaken impression that she is a man and even makes it worse by declaring that Ran is "[her] type".<ref name=pronouns>The Japanese pronoun used is gender neutral and can refer to either males or females.</ref> Her rather boyish appearance - especially in relation with her flat chest - is a bit of a touchy subject to Masumi, who claims that her mother's bust size is rather well developed and keeps expressing her hope that someday her own chest size will similarly change for her.

Masumi is quite quick-minded, coming up with clever plans and adapting them to sudden changes rapidly. Masumi seems to be prone to dramatics like most detectives are, but perhaps to a lesser degree than [[Shinichi]] or [[Heiji]] as she bluntly says who the criminal is without preamble. On the other hand, Masumi is tough to the point that she is willing to risk all to achieve a successful conclusion of a case. In one instance, she purposefully lured a hostage-taker into a sniper's sight with a smile, hoping he would be shot without showing any apprehension about his possible demise.

Although she has crime scene experience<ref name=769p3>Manga Volume 73, File 7, pg 3: "A Detective Just Like You, Little Boy"</ref>, Masumi seems to be less skilled as a detective than Shinichi or Heiji, apparently missing a critical clue that was necessary to understand how the murderer's setup worked, although Conan opines that Masumi purposely made an error in order to test him. In some degree, she seems to like rivalry or contests to see who is the winner.

Sera's catchphrase upon the conclusion of a case is "case closed".

Sera shows a protective and caring side towards Conan, as seen in the Detectives Nocturne and in the beginning of the Red Woman case when she helps Conan up after falling, as well as having it made clear in the Haunted Hotel case that she was also clearly investigating Conan before they first met, as she knew he was a detective. Its likely to believe that them being on the same bus was not an accident, which could even lead to be argued that she somehow hinted to them about the cake buffet so they would be on the same bus as her. It is safe to assume though she was, and possibly still is, investigating Conan.

Sera's way of referring to her parents as 'Mama' and 'Papa' indicates a privileges background.

== Appearance ==
[[File:Sera_transfers.png‎|thumb|Masumi transfers to Teitan High School]]

At first, she wears a grey fedora that used to belong to Shuichi Akai and a dark jacket which gives her an androgynous appearance. When she transfers to Teitan High, she gets rid of her fedora and wears female clothing. Her hair is dark, wavy, and short; it doesn't even touch her shoulders. Even then, she is rather tomboyish; Genta mistakes her for a man, and Sonoko comments she has a petite figure. Later, Genta, Mitsuhiko and Hattori comment that her bosoms are rather small. Masumi also has an uneven tooth that shows when she smiles.

Masumi and her brother Shuichi presumably more closely resemble their mother than their father.
{{clearleft}}

==Appellations==
<tabs jsId="nicknames">
<tab title="Protagonists">
{{appellations/head|Masumi}}
{{appellations|Conan Edogawa|Sera-san Sera-no-nēchan Sera Sera Masumi<ref name="file930">[[Volume 88#A Killer in Ramen Ogura|File 930 (Volume 88)]]</ref> [[Shuichi Akai|Akai-san]]'s younger sister (''Akai-san no imōto'')|Conan-kun Edogawa Conan-kun<ref name="file771">[[volume 73#Bomber's Request|File 771 (Volume 73)]]</ref> Boy (''Bōya''; first time) Wizard (''Mahō-tsukai'')}}

{{appellations|Shinichi Kudo|Sera Masumi (movie introdcution)<ref name="m18">Movie 18: ''[[Dimensional Sniper]]''</ref>|Kudo-kun Shinichi-kun Kudo Shinichi-kun<ref name="ep690">[[Yusaku Kudo's Cold Case|Episode 690]]</ref>| Kudo Shinichi}}

{{appellations|Ran Mouri|Sera-san Sera Masumi-chan<ref>File 778</ref> Sera-chan|Ran-chan Ran-kun}}

{{appellations|Kogoro Mouri|Tomboy-ish Girl|Kogoro-san Poiro-san ([[Hercule Poirot|'''Poiro'''t]] + Kogo'''ro''')<ref>[[Volume 78#Mystery Train|File 820 (Volume 78)]]</ref> Sleeping Kogoro-san (''Nemuri no Kogoro-san'')<ref name="file771" />}}
|}
</tab>
<tab title="Friends & relatives">
{{appellations/head|Masumi}}
{{appellations|Tsutomu Akai|-|Papa}}

{{appellations|Mary|Masumi<ref name="file953">[[volume 90#Soul Detective Murder Case|File 953: As If Connecting with a Demon in the Darkness (Volume 90)]]</ref>|Mama<ref name="file953" /> The little sister from outside the domain (''ryōiki-gai no imōto'')}}

{{appellations|Shuichi Akai|Masumi|Shu-nii Oniichan<ref name="file972" /> Aniki<ref name="file936">[[Volume 88#Girls Band Murder Case|File 936]]</ref> Akai Shuichi<ref name="file938">[[volume 89#Girls Band Murder Case|File 938: The Crime in the Blind Spot (Volume 89)]]</ref> Ani<ref name="file859">[[volume 81#Bumper Brawn|File 859: Jeet Kune Do vs. Karate (Volume 81)]]</ref>}}

{{appellations|Subaru Okiya|Sera Masumi-san<ref name="file954">[[Volume 90#Bourbon's Mission|File 954: Sanction of the Betrayal (Volume 90)]]</ref> Sera-san<ref name="file954" />|Subaru}}

{{appellations|Shukichi Haneda|Masumi<ref name="file972">[[volume 92#A Chance Meeting at the Beach|File 972 (Volume 92)]]</ref>|Kichi-nii ([[Gosho Aoyama|Gosho]]'s thought)<ref>[[:File:AChint8-06-2014_4.JPG]] (Sera-chan calls him Kichi-nii)</ref> Kichi-niichan<ref name="file972" /> Aniki Chukichi (talking to [[Yumi Miyamoto|Yumi]])<ref>[[Volume 88#A Killer in Ramen Ogura|File 929 (Volume 88)]]</ref>}}

{{appellations|Sonoko Suzuki|Sera-san Sensei (once) Sera-chan Female High-School Detective (''JK Tantei'')<ref name="file938" /> Sera Masumi-san<ref name="file859" />|Sonoko-chan Sonoko-kun}}

{{appellations|Heiji Hattori|Female detective (''onna-tantei'')|Hattori-kun}}

{{appellations|Kazuha Toyama|-|The girl with the ponytail}}

{{appellations|Katsumasa Ogura|Mari-chan<ref name="file930" />|Taisho<ref name="file930" />}}
|}
</tab>
<tab title="Law enforcement">
{{appellations/head|Masumi}}
{{appellations|Juzo Megure|Female High-School Detective (''Jōshi-Kōsei Tantei'')|Inspector-san (''Keibu-san'')}}

{{appellations|Wataru Takagi|Sera-kun|Detective Takagi (''Takagi-keiji'')<ref>[[Volume 86#Poolside Case|File 905 (Volume 86)]]</ref>}}

{{appellations|Andre Camel|-|"FBI Guy"}}

{{appellations|Ginzo Nakamori|Boy (''Bōzu'')<ref name="file828">[[Volume 78#The Blush Mermaid|File 828 (Volume 78)]]</ref>|Inspector-san (''Keibu-san'')<ref name="file828" /> Inspector (''Keibu'')<ref name="file828"/>}}

{{appellations|Rei Furuya|-|Amuro-san<ref name="file937">[[Volume 88#Girls Band Murder Case|File 937]]</ref>}}

{{appellations|Scotch|-|Scotch<ref name="file937" /> [[Shuichi Akai|My brother]]'s friend (''Aniki no yūjin'')<ref name="file936" /> The friend (''sono yūjin'')<ref name="file936" />}}

{{appellations|Jugo Yokomizo|Young girl (''wakai no'')<ref name="file858">[[volume 81#Steamy Relations|File 858: A Problematic Deduction (Volume 81)]]</ref>|Inspector-san (''Keibu-san'')<ref name="file858" />}}
|}
</tab>
<tab title="Detective Boys">
{{appellations/head|Masumi}}
{{appellations|Ai Haibara|Sera Masumi<ref name="m18" />|Haibara Ai}}

{{appellations|Ayumi Yoshida|Onēsan<ref name="m18" />}}

{{appellations|Hiroshi Agasa|-|Professor Agasa (''Agasa-hakase'')}}
|}
</tab>
<tab title="Others">
{{appellations/head|Masumi}}
{{appellations|Yusaku Kudo|-|Kudo Yusaku<ref name="ep690" />}}

{{appellations|Yukiko Kudo|Sera<ref>[[Volume 78]], File 6</ref>|-}}

{{appellations|Scar Akai|Masumi<ref name="MT">[[The Jet-Black Mystery Train]]</ref>|Shu-nii<ref name="MT" /> Acquaintance (''shiriai'')}}

{{appellations|Makoto Kyogoku|-|Master of Karate (''Karate no Tatsujin'')}}

{{appellations|Kohji Haneda|-|Haneda<ref>[[volume 90#Soul Detective Murder Case|File 952: In the Suspicious Next Room (Volume 90)]]</ref> Haneda Kohji<ref name="file953" />}}

{{appellations|Asaka|-|Asaka<ref name="file953" />|file=Asaka manga.jpg}}
|}
</tab>
</tabs>

==Plot overview==
=== Masumi's Introduction (Manga: [[Volume 73#Jeet Kune Do|768 - 770]], Anime: [[Deduction Showdown at the Haunted Hotel|646 - 647)]] ===
[[File:Sera_Kick.png|thumb|right|Masumi defends herself from Ran.]]
Masumi first met [[Sonoko Suzuki|Sonoko]], [[Ran Mouri|Ran]], and [[Conan Edogawa|Conan]] on a bus after she was mistaken for a [[Wikipedia:Groping|groper]]. After Sonoko declared Masumi was the groper, Masumi and Ran got into a fight, with Masumi's Jeet Kune Do holding even against Ran's karate. Conan and Masumi cleared up the misunderstanding by pointing out the real groper. Sonoko then mistook Masumi for a boy, an impression which wasn't helped by Masumi declaring that Ran was "his type".<ref name=pronouns/> Masumi and Ran both discovered they were heading to the same hotel, about which Conan is less than pleased.

Masumi finds out the hotel she is staying at doesn't have a room available and complains at the front desk. A man then falls into the parking lot and dies. Conan runs to the source of screaming while Masumi told the guard to watch the elevators before running to the roof. She immediately declares the crime to be a murder, giving her reasoning. She then reveals her name, Masumi, that she is a detective, and knows Conan is a detective as well. She also revealed before she knew Conan's name despite it not being mentioned in front of her, revealing that Masumi has been investigating Conan for awhile now.

[[Juzo Megure|Inspector Megure]] is not pleased to have another high school detective underfoot but lets Masumi and Conan investigate regardless. After listening to the suspect testimony, police observations, and examining the crime scene, Masumi announces that she has solved the case.

However, Masumi's deduction leaves out a critical detail; Conan is therefore forced to use Shinichi's phone to call his own, give Inspector Megure Conan's phone, and speak through Shinichi's as Shinichi using the voice-changer bow tie. Shinichi figures out the detail that had Masumi stumped, although a look she gives Conan as he runs off suggests her omission was possibly intentional, and once during the phone conversation she tries to trick Shinichi into admitting that he is physically present at the crime scene instead of being explained the details by Conan and Megure.

The following day, Masumi transfers to Teitan High School, surprising both Ran and Sonoko. She was rather popular at school surrounded by students asking her questions about herself.

===Kogoro Detective Agency Hostage Crisis (Manga: [[Volume 73#Bomber's Request|771]]-[[Volume 74#Bomber's Request|774]], Anime: [[Hostage Situation at the Mouri Detective Agency|648 - 650]])===

====Let's hear your brilliant deduction! (771)====
According to Sonoko, Masumi has become very popular at Teitan high for being "cheery, sociable, boyish, and cute...and on top of that, she is a jeet kun do-using female detective!"<ref>Manga Volume 73, File 9, Page 3, "Let's hear your brilliant deduction!"</ref> One classmate compares her to [[Shinichi Kudo]] who has been taking a break from school. Masumi tells inquiring classmates that she has been staying in America with her parents since three years ago, but "rebelled" because she would rather live in her Japan where she was born and raised. She sneaks up behind Sonoko and Ran after school because she wanted to speak to Conan at the Mouri Detective Agency. At the agency, Masumi is unhappy to hear that Conan and the rest of Detective Boys are staying at Agasa's house and will be camping the following day. She settles for asking Kogoro if Conan is always at his side when he solves cases, hinting that she suspects Conan is the real brains behind "Sleeping Kogoro".

[[File:Sera_slide_kick.png|thumb|left|Masumi sweeps out the Hostage Taker's legs]]
Just as Masumi is about to walk out the door, three female mystery writers and a man enter the agency. After a moment of confusion, the man suddenly fires a gun into the roof and takes the detective agency hostage. His demands are that Kogoro figure out which of the three writers killed his sister at a ryokan one month ago. The quick thinking Masumi sidles up to Ran and tells her to go for the man's gun after she takes his legs out. Sera's leg sweep sends the man to the floor, and Ran removes the gun from the man's hand with a kick; however, Masumi leaps back when the man reveals he has bombs strapped around his chest and will detonate them if they try to stop him.

Meanwhile at Agasa's, Haibara is angry that Conan used Shinichi's voice to solve a case around the suspicious Masumi. Conan's response is that Masumi is familiar somehow, like they have met before or she looks like someone, and Conan feels she isn't an enemy. Genta and Mitsuhiko told Conan they saw a high school student walking home with Ran, so the jealous Conan calls Ran's cellphone to hear about it from her.

The hostage taker man orders Ran to answer her phone, but Masumi snatches the phone away and says hello to Conan (who is shocked that Masumi is with Ran). Masumi then tricks the hostage taker and keeps the line connected so Conan can listen in by closing Ran's [[Yaiba#Characters|Sea Cucumber Man]] cellphone strap in between the screen and keypad of the the flip phone.

====Nickname Rules (772)====
Masumi asks a few insightful questions about the case; however the hostage taker man discovers Ran's phone is still connected. Under gunpoint, Masumi steps in front of Ran and takes the blame, but Conan, using Shinichi's voice, says he ordered Ran to do it. Masumi is mystified by why Shinichi is now on Conan's phone. Masumi meanwhile spots a glint of light across from the detective agency and declares that the case will come to an end without Shinichi's help.

====Possible Sniping (773)====
[[File:Sera773.png|thumb|right|Masumi surprised by Ran's attitude.]]
Masumi explains to Ran that she secretly kept the call to Conan connected so he could call the police and research into the case. While Masumi is still surprised that Shinichi was on the other end of the line instead of Conan, she had initially hoped that Shinichi would somehow be able to talk down the would-be-murderer. She suspects that Shinichi has already figured which one of the suspects is the murderer in the ryokan case, but Shinichi is unable to reveal the truth because the hostage taker would then kill the named culprit and then himself. Sera's plan changed when she noticed the lights from the police snipers on the building across from Mouri Detective Agency. She explains to Ran in detail the names and functions of the various police divisions responsible for hostage situations, and tells Ran in a roundabout fashion that this situation will end with the hostage taker being killed by the police.

Masumi launches a plan to bring the hostage taker into the snipers' range by telling him he should charge Ran's phone battery. Ran foils Sera's intentions by shutting the curtains, blocking the snipers' shot. To Masumi's utter astonishment, Ran tells her that she doesn't want to see anyone die in front of her and declares that "Shinichi won't allow anyone to die. He absolutely wouldn't!"<ref>Volume 73, File 11, page 13, "Possible Sniping." Shinichi then begins to present his deductions over the phone and Masumi wonders how he will manage to resolve this situation without bloodshed.</ref>

====The book with unturned pages (774)====
Masumi and Ran take the opportunity to disable the hostage taker when he loses his composure and grip on the detonator after Shinichi tricks him into believing his sister committed suicide. Masumi yells for the waiting bomb squad to secure the area. With the hostage taker arrested, Shinichi then reveals the true culprit. Masumi realizes the mistake in her deduction and explains the correct timeline of events before the murder. Sometime soon after the conclusion of the case, Masumi, walking with Ran and Sonoko speculates aloud that there must be some reason Shinichi left Agasa's before Ran could meet him there. She then exclaims that "due to what just happened, she really gets it", that Conan and Shinichi are on very good terms with one another, and that Ran "is tougher than Masumi thought". Conan isn't sure what to make of these last comments.

===Video Site (Manga: [[Volume 74|775-777]], Anime: [[The Professor's Video Site|656-657]])===
[[File:Ai image.png|thumb|Masumi deletes Haibara's image]]

Masumi stops [[Genta Kojima|Genta]] and [[Mitsuhiko Tsuburaya|Mitsuhiko]] outside of [[Hiroshi Agasa|Agasa]]'s house to ask them if they are acquaintances of Professor Agasa. The topic of [[Shinichi]] comes up when she talks to Mitsuhiko and Genta about the prior hostage case. Mitsuhiko mentions that [[Ai Haibara|Haibara]] told them to keep Shinichi's involvement secret. After asking about Haibara, Masumi mentions that she saw Haibara in one of the professor's online videos. Next, Masumi asks who is currently living in the Kudo house because she saw the curtains shift slightly. The Detective Boys tell her that [[Subaru Okiya]] has been staying there since his apartment burnt down. Masumi cryptically comments with a smirk on her face, "And here I thought that someone had just settled in without permission...But it seems I was just getting worked up over nothing..." while looking up at where Subaru is hiding.

At the end of the case, Masumi is in her hotel room deleting various files. One of her deleted files was a still image from Agasa's video blown up to show Haibara reflected in Agasa's glasses. This indicates that she is not only keeping an eye on Conan but also on Haibara.
"Delete... Delete... For data, at least is an easy task to accomplish...", were her words while she was doing it.

===East vs. West Rematch (Manga: [[Volume_74#East_vs._West|778-780]], Anime: [[Conan vs. Heiji, Deduction Battle Between the Detectives of the East and West|651]])===
[[File:Sera FBI.png|thumb|left|Masumi thinks about the FBI]]
The case opens with Ran talking to Masumi about [[Heiji Hattori]] who is stopping by for a visit. Masumi is curious whether Heiji or Shinichi is the better detective. After Heiji is introduced to Masumi, Kazuha then calls Heiji and tells him that she is stuck at a restaurant because someone died and a foreigner [[Andre Camel]] is keeping everyone from leaving. Masumi proposes Heiji and Shinichi (via Conan's cellphone) have a deduction match. At the crime scene, Masumi becomes curious about the foreigner, Camel who secured the area. The police and Conan reveal Camel is an [[Federal Bureau of Investigation|FBI]] agent and Masumi takes interest. Meanwhile, Camel finds that Masumi looks familiar, but can't quite place why. He takes a picture of her and mails it to [[Jodie Starling|Jodie]] and [[James Black]] who are waiting outside. Jodie and James think Masumi resembles someone too, but only James Black correctly identified Masumi as female.

Meanwhile Masumi is busy helping with the case, asking questions and making comments about various deductions. Heiji nearly slips up with Conan's identity in front of her earning a pointed question from Masumi, but Heiji rescues himself by saying he thinks of Conan as Kudo when Conan gets smug have hearing Shinichi's deductions over the phone. Masumi doesn't seemed to be fooled though, her thoughts show that she seems to know Conan, not Shinichi, is the one solving the case while watching Conan come to his final conclusion.

===EYE (Manga: [[Volume_74#Eye_for_an_Eye|781]], Anime: [[The Design of Poison and Mirage|652]])===
Conan, Heiji, Masumi, and the rest of the group return to the Mouri Detective Agency after the poisoning case at Danny's restaurant. Heiji reveals the case that brought him to Tokyo; he received a mysterious letter signed in the name of a person who was murdered in Karuizawa requesting an investigation. Masumi takes an immediate interest in the case and wants to tag along, but Heiji refuses saying that the people he is visiting are only expected five people. Masumi is peeved at being left behind.

===Kogoro-san is a Good Man (Manga: [[Volume 75|787]], Anime: [[Kogoro-san is a Good Man|661]])===
Masumi is walking with Conan, Ran and Sonoko. While they wonder why Kogoro has been coming home late, Sonoko thinks he's found himself a mistress. Masumi thinks that he is just investigating a case. When an old lady named Takae Kiritani comes, she claims that Kogoro has been helping her. Masumi asks what he does for her to which she replies that its small things like helping around the house. Masumi isn't seen again for the rest of the case.

===Murder at Mouri Detective Agency (Manga: [[Volume 76|797-800]], Anime: [[Detectives' Nocturne|672-674]])===
[[File:Sera's motorcycle.jpg|thumb|right|Masumi in her motorcycle.]]
During a murder case at Mouri Detective Agency, after meeting Kogoro's new apprentice [[Rei Furuya|Tooru Amuro]], [[Juzo Megure|Megure]] comments that the number of detectives around Kogoro has increased again, referring to Masumi. Amuro takes interest in Masumi. Later, Kogoro and friends go over to a suspect's apartment. Masumi calls Ran after hearing about the murder on the news because she is worried about her and Conan. The call has an usual amount of static which alerts Amuro that there are listening devices present. Amuro abruptly hangs up Ran's phone on Masumi. Meanwhile, Conan intentionally gets himself kidnapped by the primary suspect. After Ran enables calling again, Masumi calls back immediately and is very upset because she was worried something had happened to Ran. Ran tells her that Conan has been kidnapped, and details to Masumi the murder at Kogoro's agency. In order to figure out where the kidnapper is headed, Kogoro and Amuro search the apartment and decide to go to the address of one of the other suspects.

Masumi arrives at suspect's home on [[Cars|her motorcycle]], but just misses Kogoro and the gang leaving. She hears the elevator descending and rushes back downstairs in time to follow Amuro's [[Cars|car]]. Meanwhile, the culprit has been driving around with Conan while Haibara has been directing Okiya's car towards them using the criminal tracking glasses. Okiya catches up to the kidnapper and relays what the car looks like to Kogoro. Amuro sees the suspect's car heading in the opposite direction so he quickly wheels around after it. Masumi, who has been following Amuro's car this whole time, u-turns after Amuro and continues chasing. Amuro gets in front of the suspect's car and stops it. The suspect gets out of the car holding Conan at gunpoint, but Masumi drives up onto the roof of the car. She swings her motorcycle around so that the rear wheel slams into the woman's face knocking her unconscious. With tears of relief, Masumi hugs Conan, happy he is safe. Amuro, Okiya, and [[Vermouth]] look on.

===Meeting with Scar Akai (Manga: [[Volume 76|801]], Anime: [[Won't Forgive Even One Millimeter|675]])===
[[File:Sera_675.jpg|thumb|left|220px|Masumi looking for Scar Akai.]]
Masumi is walking with Sonoko and Ran, and Ran is talking by phone with Conan. Masumi hears Haibara's voice in the background and becomes curious. She asks the two others what Haibara is like, and Sonoko says Haibara is like a woman in a child's body.

When Ran hangs up her cellphone, the topic switches over to [[Rei Furuya|Amuro]]. Masumi says to Ran she wants to meet Amuro because she never got a really good look at him from the last case, but Sonoko thinks she wants to meet Conan, instead. Ran says Shinichi and Conan are big fans of Sherlock Holmes. Masumi thinks about that she has known that for a long time.

Suddenly, Masumi sees [[Scar Akai]] in the crowd ahead. She runs after him, but she can't catch him. Ran wonders who Masumi was chasing, but Masumi replies she thought it was someone she knew, and silently appends in her mind that it would be impossible for the man she was chasing to be the person she thinks it was.

[[File:690-3.png|thumb|Masumi is shocked to see Subaru]]
===Yusaku Kudo's Cold Case (Manga: [[Volume 77|812-814]], Anime: [[Yusaku Kudo's Cold Case|690-691]])===
Masumi meets [[Subaru Okiya]] at Shinichi's house and she finds him suspicious. She began to think there is a woman at Kudo's house because there are a hair elastic, lipstick in a glass and a long hair in the sink trap. After that, all of them solved a case together that is similar to a case that Shinichi Kudo's father dropped out 10 years ago. It was revealed to be a theft case. Both Subaru and Masumi had got more suspicious of Conan and the identity of Shinichi Kudo. At the end, when the criminals were knocked, she saw Ran and Conan and she thought she was a 'bad kid', after all.

===Gunma Campground's Cabin Trap (Manga: [[Volume 77|815-817]], Anime: [[The Shadow Approaching Haibara's Secret|699-700]])===
[[File:Masome.png|thumb|left|120px|Masumi at the campground]]
She went camping when she meets Professor Agasa and Conan. The Detective Boys were lost. Masumi and Conan found the two policemen finding the corpse. After she and Conan solved the case, she and Conan rushed towards the burning cabin. Conan and the Detective Boys were talking about how they got safe. Mitsuhiko pointed the way were their savior went. Masumi then began to ask what kind of woman is their savior. She seemed to be surprised when she saw her on Mitsuhiko's cell phone.
{{clear}}
[[File:new-sera.png|thumb|left|150px|Masumi leans in to get a good look at Haibara]]
[[File:Sera is akai sister.jpg|thumb|right|200px|Masumi is revealed to be Shuichi's sister.]]

===Mystery Train (Manga: [[Volume 78|818-824]], Anime: [[The Jet-Black Mystery Train|701-704]])===
Masumi finally meets Haibara, and Haibara has a bad feeling about her (although it could have been due to Scar Akai spying on them from behind the door just then). Later when a murder occurs on the Bell Tree Express, she and Conan investigate. Masumi takes a video recording of the suspects running so she can show it to the detective boys in order to ask them which one had the closest gait to the masked suspect from earlier, but she is intercepted first by Scar Akai in the hallway. She stops and angrily asks him who he is. Scar Akai simply replies that she hasn't changed, reveals his face to her, and refers to her by her first name, "Masumi". In her shock Masumi calls him "Shu-nii", signifying that Shuichi is Masumi's older brother. She questions Scar Akai about what happened, saying that she heard he had died. Scar Akai then tasers her unconscious, stating that he was hoping for that response. Scar Akai later is revealed to be Vermouth in disguise, explaining why he attacked Masumi.

===The Blush Mermaid Heist (Manga: [[Volume 78|828]]-[[Volume 79|830]], Anime: [[Kaitou Kid and the Blush Mermaid|724-725]])===
[[File:SeraHat.jpg|left|thumb|200px|Masumi is relieved that she has got her hat back.]]
Masumi accompanies Conan, Ran, and Sonoko to the location of Kaitou Kid's next heist: a museum where the Blush Mermaid, a gem adhered to the shell of a turtle as a last ditch effort by a an Italian actress in an accident at sea to save her turtle by encouraging someone to rescue it. Before checking out the museum, Masumi asks Ran if she saw a [[Scar Akai|strange man in black]] when she found the hat on the Belltree Express. After the group arrives at the room where the turtle is being held in a large aquarium, [[Ginzo Nakamori|Inspector Nakamori]] pulls Masumi's face to see if it is a mask worn by Kid. Annoyed by Nakamori's mistaken gender assumption and having her face pinched, Masumi knees him in the privates ostensibly to prove he isn't Kid. Masumi then runs off to the bathroom. Later, when Kid makes his move, Masumi is one of many caught in his trap: the rug on the floor is pulled up by strings so that it pins everyone standing on it to the front of aquarium. As soon as the rug drops, everyone sees the tank is empty except for a card left by Kid. This leaves Conan and Masumi quite dumbfounded as to how Kaitou Kid could have removed the turtle. Later, Conan reveals that Masumi is really Kaitou Kid, and he had made a critical error in his acting by assuming Masumi was a male. Kaitou Kid had locked the real Masumi bound and gagged in the men's bathroom after knocking her out with a stun gun. Upon gaining consciousness, Masumi escapes her bonds, rushes out of the bathroom, and gives a still disguised Kid a fierce kick to the face. After Kid escapes (due to Ran distracting Masumi by pointing out that everyone can see her underwear), Masumi is relieved that she at least managed to recover her hat, which she thinks is special because it somehow has the same feel as her brother Shuichi Akai's hat.

=== Cooking Show Murder (Manga: [[Volume 80|844-846]], Anime: [[The Treasure Chest Filled with Fruits|727-728]])===
[[File:SeraSmile.jpg|right|thumb|150px|Masumi is smiling and blushing when Conan asks her if they had met each other before.]]
Conan, Ran, Sonoko, Kogoro and Masumi go to a live cooking show. Conan wants to ask something important to Masumi, but a murder gets in his way. While solving the case, Ran realises that Masumi and her might have met each other before, since Ran thinks of waves in the beach each time Masumi gets away. At the end of the case, Conan asks Masumi if they had met each other before. Masumi smiles and says she doesn´t know, but actually she thinks "Of course we have, but I can´t tell you until the time comes..."

===Adultery Investigation (Manga: [[Volume 81|856-858]], Anime: [[Bathroom Where Ran Collapsed As Well|740-741]] )===
[[File:SeraCall.png|left|thumb|150px|Masumi is calling her brother on the phone.]]
After being hired by a classmate, Keiko Kitao, Masumi is investigating to see if the boyfriend of Keiko's sister has fully committed to their relationship. However, as the atmosphere is rapidly changed by the murder, Masumi and Conan start to investigate the crime scene. When Conan has finally deduced who the culprit is, he also observes Masumi making a call with someone saying "...Say, my deduction... It's not wrong, is it?". Upon solving the case, Eri states having seen Masumi talking to her brother on the phone.

=== Meeting Makoto (Manga: [[Volume 81|859-861]], Anime: [[The Suspect is Makoto Kyogoku|744-745]])===
[[File:SeraAndMakoto.jpg|right|thumb|200px|Masumi attacks Makoto with her Jeet Kune Do.]]
At a Bowling Center with Conan, Ran, Sonoko and Kogoro, Masumi is introduced to Sonoko's boyfriend Makoto. Shortly before, Makoto mistakes Masumi for a stranger being "overly friendly" with Sonoko and tries to fight her. Masumi explains that she has been taught Jeet Kune Do by her older brother, she also reveals that besides her assumingly dead brother, she also has a second-oldest brother. Furthermore, Masumi explains to Conan that her brother also advises her on cases by phone. After successfully investigating the crime scene with Conan, Masumi steps aside with her smartphone and types in the message "It seems like he's also arrived at the truth... But whether or not our deductions are the same - lately I've been losing confidence in that regard...". When the recipient writes back "Who is he? I'd like an explanation!", Masumi takes a picture with her smartphone. However, the recipient's answer, "If it's him, there's no problem." reveals that he is familiar with Conan. It is heavily implied that it is the same person Conan saw Masumi making a call with in File 857.

===Red Woman Case (Manga: [[Volume 82|872]]-[[Volume 83|875]], Anime: [[The Tragedy of the Red Woman|754-756]])===
Masumi takes a request from her middle brother to consult in his place about a case involving some of his high school classmates who are now 28-29 years old. On the way to a cabin in the woods, Masumi tells Conan and the gang more about her family history and timeline. She reveals that she and her brothers each have different family names for various reasons, one of which is the death of her father. The case takes a dark turn when one of the classmates is found murdered in a bathtub of tomatoes. With the help of the Nagano police, Conan and Masumi manage to solve the case. Later, Masumi asks Conan to find her cellphone in the kitchen by calling it with his. He does so and Conan notices the call background screen is a [[Mary|child who looks like Masumi]] with eye bags similar to those of the [[Akai family]] members. Masumi mentions having a younger sister earlier on (Episode 754), so Conan suspects Masumi was intentionally trying to show him the child for some reason.

===Romance Novelist Murder Case (Manga: [[Volume 83|876]]-[[Volume 83|878]], Anime: [[The Romance Novel with the Unexpected Conclusion|759-760]])===
On the way home from school, Ran and Sonoko decide to visit Masumi's hotel (which is different from the other one she has been staying at earlier). Masumi claims she had a meeting with her supposedly-hard-to-reach [[Akai family's middle brother|middle brother]] planned, so she texts him to reschedule. Conan seems to notice this contradiction. At the hotel, Conan tries to peek in Masumi's bedroom, but Masumi wards him off by embarrassing him. Masumi also asks Conan is she reminds him of someone he met in the past, but Conan draws a blank. A murder interrupts the meeting. While Conan is investigating, he notices the middle-school aged [[Mary|child]] from Masumi's cellphone picture in the gathered crowd. Later, Conan and the gang return to Masumi's room, and Conan hides his glasses earpiece [[microphone]] to spy on the apartment. It is quickly found and destroyed by Masumi and the child after Conan departs with Ran and Sonoko. Masumi asks the child is she is beginning to like him, but the child responds that she is still long way from trusting him. The child asks Masumi to tell Conan she is her little sister from outside the territory if he asks about her. Masumi doesn't mention that she showed Conan the child's picture.
[[File:Masumi and Scotch Flashback EP836 (3).jpg|150px|thumb|right|Masumi remembers meeting a man nicknamed Scotch]]

=== Shogi Tournament (Manga: [[Volume 85|899-902]], Anime: [[Taiko Meijin's Match of Love|785-786]]) ===

=== Poolside Case (Manga: [[Volume 85|903]]-[[Volume 86|905]], Anime: [[The Mystery Sinking in the Midsummer Pool|787-788]]) ===

=== Ran & Shinichi - First Contact (Manga: [[Volume 87#Ran & Shinichi - First Contact|921-924]], Anime: [[Memories from Sakura Class|853-854]]) ===

=== A Killer in Ramen Ogura (Manga: [[Volume 88#A Killer in Ramen Ogura|928-930]], Anime: [[Ramen So Good, It's to Die For 2|827-828]]) ===

=== Girls Band Murder Case (Manga: [[Volume 88#Girls Band Murder Case|936-938]], Anime:[[The Unfriendly Girls Band|836-837]]) ===
Four years ago, Masumi was taught a few notes on the base guitar by a friend of her brother, [[Shuichi Akai|Shuichi]]. The friend was referred to as "[[Scotch]]" by another person who Masumi thinks looks like [[Rei Furuya|Rei]].

=== Soul Detective Murder Case (Manga: [[volume 90#Soul Detective Murder Case|951-953]], Anime: TBA) ===

=== Swimsuit Festival Murder Case (Manga: [[Volume_91#Swimsuit_Festival|969]]-[[Volume_92#Swimsuit_Festival|971]], Anime:TBA) ===
Masumi intentionally puts on a bathing suit similar to the one that she had worn in the past to try to jog Conan's memory of where they met. A case occurs, which involved the method of counting fingers in different countries. Masumi seems to count the same way that is used in the UK, but seems to think that it is the way it is done in the US. As Conan corrects her, she seems confused. Conan thinks back on all of the times that Masumi has done things that seem to imply that she was in the UK rather than the US and he finally remembers the events of 10 years ago by repeating イギリス (Igirisu / Britain) in is head.
{{clear}}

=== A Chance Meeting at the Beach (Manga: [[Volume_92#A_Chance_Meeting_at_the_Beach|972-974]], Anime:TBA) ===

== Non-Canon Plot Overview ==

=== Movie 18: [[Dimensional Sniper]] ===
Sera appeared in this movie as an investigator of the person who had been shot in the Bell Tower. She and Conan helped in chasing the culprit and afterwards was shot by the culprit after saving Conan.

== Plot Exposition ==
=== Hints that Masumi was Shuichi Akai's sister ===
Masumi was revealed to be Shuichi Akai's sister on the Bell Tree Express after a confrontation with [[Scar Akai]]<ref name=821p16>Manga [[Volume 78]], File 4 (821), pg 16: "Mystery Train (Junction)"</ref> and while sleeptalking.<ref name=823p4>Manga [[Volume 78]], File 6 (823), pg 4: "Mystery Train (Releasing Smoke)"</ref>
[[File:Sera_and_Shuuichi.png|thumb|right|300px|Masumi and [[Shuichi Akai]].]]
* Masumi has bags under her eyes identical to Shuichi Akai's.
* Masumi Sera's name is also incredibly similar to Mobile Suit Gundam character [http://gundam.wikia.com/wiki/Sayla_Mass Sayla Mass] ({{lang|ja|セイラ・マス}}, ''Seira Masu''). [[Shuichi Akai#Name origin|Shuichi's name is derived]] from Sayla Mass's older brother's name, Char Aznable.
* Conan said he has a feeling he had met her before. "''Somehow I feel like we've met somewhere before, it might be that person resembles someone I know, that's why the feeling that we've met before is on my mind...''"<ref>Manga Chapter 771: Let's Hear Your Brilliant Deduction! p.11</ref>
* [[Andre Camel]] and most likely [[James Black]] seem to recognize her from somewhere. On another interesting note, James was the first to recognize that Masumi was a girl. Everyone else thought that she was a guy when they first saw her. Since James was Shuichi's boss, he would most likely know that Shuichi has a younger sister and what she would look like.
* Masumi lived in Japan until three years ago when her family moved to America. This matches with the time when Shuichi was infiltrating the Black Organization. The family's move to America could be the FBI's attempt to protect them should something go wrong with Shuichi's mission.
* In Chapter 801, Masumi chased after [[Scar Akai]] who appeared while she was walking with Ran in front of the Mouri Detective Agency. Although, Scar Akai hid before she could find him, she told Ran that she had just seen "someone she knew".
* In Chapter 859, Masumi, when being asked who taught her Jeet Kune Do, answers that her older brother did. Consequently, Conan asks Sera: "But, didn't you say your older brother was dead?" This leads to Masumi remarking "Yeah... That's what I heard." also further supporting the theory that Masumi is in Japan to investigate her brother's death.

=== Hints that Masumi was not Bourbon ===
* In Chapter 801, Masumi chased after [[Scar Akai]] who appeared while she was walking with Ran in front of the Mouri Detective Agency. Although, Scar Akai hid before she could find him, she told Ran that she had just seen "someone she knew". She then thinks there is "no way it was possible" regarding the man she saw, which would make sense if she thought Shuichi was dead. This implied she wasn't Bourbon, since Bourbon believes he is the only one who can kill Shuichi, implying that Gin might have failed to do so. Hence Bourbon wouldn't think that it was impossible to meet Shuichi again in the street.

==Relationships analysis==

===Friends & Family ===

==== Shuichi Akai ====
[[Shuichi Akai]] is Masumi's older brother. She didn't get to meet him until she was six-seven years old, because Shuichi went to study abroad before Masumi was born. At first meeting she was very shy, but she did make some pranks in an attempt to make him smile. Masumi refers to Shuichi as "Shu-nii", implying that they were close. Masumi seems to miss him after his supposed death. In the Blush Mermaid Heist, Masumi is shown to be fond of her fedora as she believes it has the same "feel" as Shuichi's old hats. Shuichi sent Masumi Jeet-Kune-Do training tapes while she was in elementary school. She watched these so many times while practicing that she wore them out.<ref name="876p2">Manga [[Volume 83]], File 4 (876), pg 2: "Romance Novelist"</ref> She describes her eldest brother as ''strong'' in contrast to her second - oldest brother.<ref name="859p6-7">Manga [[Volume 81]], File 9 (859): pgs 6-7: "Jeet Kune Do vs. Karate"</ref>

==== Conan Edogawa ====
[[File:EP671-674_25.png|thumb|right|Masumi hugs Conan after rescuing him in [[Detectives' Nocturne]].]]
Masumi is interested in [[Conan Edogawa|Conan]]'s abilities as a detective and has been gathering information on him and his friends. She appears to be certain that Conan is Shinichi Kudo. Despite her initial suspicious presentation, Conan felt like she wasn't a bad person and so didn't mistrust her. Conan at several points questions her if they've met before, but she denies this, once secretly thinking, "Now's not the time". The period in which such an encounter could have taken place is initially hinted to be somewhere before the three-year span of Masumi's sojourn in the United States, when she was in her preteen years.<ref name="Mang83">Manga [[Volume 83]], File 2 (874), pg 7-8: "Red Past"</ref><ref name="Mang86">Manga [[Volume 86]], File 1 (905): "The Truth Rises to the Surface"</ref>

It is later shown that she had met Conan/Shinichi ten years ago, when the Akai family had gathered on an undisclosed beach in Japan prior to Shuichi Akai joining the FBI. By chance, Shinichi and [[Ran Mouri|Ran]] had also vacationed there, and they all ended up as witnesses and investigators in a gone-awry flight attempt from a robbery. When Shinichi managed to make Shuichi laugh (something Masumi had miserably failed to achieve) with his intelligence, observation skills and some unintended jokes, Masumi, in her admiration for Shinichi, began to call him "wizard". It is quite possible that this meeting inspired Masumi to become a detective herself.<ref name="Mang92">Manga [[Volume 92]], File 2-4 (972-974): "A Chance Meeting at the Beach"</ref>

If Masumi really lived in England, instead of America, then it's possible that she saw the tennis match from the London case on TV and recognized Conan as Shinichi based on his proclamation as 'Holmes' apprentice'.

On several occasions, such as the dramatic conclusion of the [[Volume 76#Online Client|Online Client Case]], Masumi has displayed an intensely affectionate air towards Conan which somewhat transcends a mere "big sister" relationship.<ref>Manga Chapter 800: ''Online Client Case'' - "When Objects Collide"; Anime Episode 674: ''[[Detectives' Nocturne]]'' - "Bourbon"</ref> In fact, it is hinted during the [[Volume 83#Romance Novelist Murder Case|Romance Novelist murder]] and in the movie ''[[Dimensional Sniper]]'' that she may actually be entertaining a crush on Shinichi/Conan and hopes of initiating a closer relationship with him. However, the actual level of her feelings for him is yet to be publicly revealed.

==== Ai Haibara ====
Masumi has been interested in meeting [[Ai Haibara]] for yet unrevealed reasons and has been secretly gathering information on her. She also seemed to recognize [[Shiho Miyano]] in the video of her rescuing the [[Detective Boys]]. Haibara in turn feels uneasy around Masumi, especially in close contact situations though arguably it could also be due to Scar Akai's presence near Masumi.

==== Ran Mouri ====
[[File:Ran and Sera and Wave.jpg|thumb|left|180px|Ran hears sounds of rippling waves when she sees Masumi hurried away]]
Since enrolling at Teitan High, Masumi and [[Ran Mouri|Ran]] have become friends and often walk home from school together. Masumi has also declared Ran as "her type" when they first met as a sign of liking, though this ultimately led Sonoko, Conan and Ran herself to mistake Masumi for a boy.

At one point, Ran recalls having met Masumi before in the past, hearing the sound of "rippling waves" when the she sees the latter leaving, "as if some sort of magic were at work".<ref name="Mang86"></ref> It is revealed in a later story that she and Masumi had actually met 10 years before, when they were both still children, on a beach, where by happenstance she, Shinichi and the Akai family inadvertently became embroiled in the aftermath of a crime (see '''Conan Edogawa''', above).<ref name="Mang92"></ref>

==== Sonoko Suzuki ====
Since enrolling at Teitan High, Masumi and [[Sonoko Suzuki|Sonoko]] have become friends and often walk home from school together, with Sonoko describing Masumi as a popular girl who is "cheery, sociable, boyish and cute" and on top of that, a "Jeet Kune Do using detective", though she also teasingly remarks that the only thing "against Sera" is her flat chest.

==== Akai family's middle brother ====
Masumi appears to have a good relationship with her [[Akai family's middle brother|second-older brother]] and often consults him regarding information or deductions about the cases she faced, and also has a high regard of her brother's intellect, even considering the already sharp Shuichi as "strong" in contrast to her second older-brother.

==== Tsutomi Akai ====
Masumi's father died before she was born, so she never knew him. But he refer to him as 'Papa'

=== Black Organization ===

==== Rei Furuya ====
Rei first saw Masumi in Detectives Nocturne case and seemed to recognise her. They formally met in chapter 936 (Girls Band) at [[Café Poirot]]. Masumi felt like having met him and even asked him directly about that, but Rei said that was the first time they met. When Masumi talked about a friend of her brother who taught her play the guitar, Rei also seemed to know about that incident. In Masumi's flashback of that friend, a man who looked very much like Rei appeared, and Masumi once again wondered about it, to which Amuro replied that she took the wrong person.

==Speculation==
[[File:Sera Knowing Conan's Name.png‎|thumb|right|170px|Masumi mentioning Conan's name.]]
=== Masumi met Shinichi and Ran when she was younger and knows Conan is Shinichi ===
*Masumi knew [[Conan Edogawa|Conan]] and [[Ran Mouri|Ran]]'s identities before they introduced themselves. She also knew that Conan is a detective.<ref> [[Volume 73]], File 6 (768)</ref>
*Masumi seems to know that Conan is the brains behind Sleeping Kogoro. Conan seems to think that he may have met Masumi before or that she resembles someone that he knows. He believes that she got the deduction of a case wrong just so that he would reveal himself. <ref> [[Volume 73]], File 9 (771)</ref>
*Conan realizes he met Masumi before because he finds her snaggletoothed smile familiar,<ref name=845p16>Manga [[Volume 80]], File 6 (845), pg 16: "Our Territory"</ref>
*Masumi admits that she has met Conan before, but she can´t tell him until "the time" comes.<ref name=846p16>Manga [[Volume 80]], File 7 (846), pg 16: "The Magic Lock"</ref>
*Ran has met Masumi as well because Masumi's figure as she runs away reminds her of "sounds of rippling waves, as if some sort of magic were at work."<ref name=846p4>Manga [[Volume 80]], File 7 (846), pg 4: "The Magic Lock"</ref>
*Masumi, asks Conan if he once met a girl "a long time ago and could never forget [her]"<ref name=876p11>Manga [[Volume 83]], File 4 (876), pg 11: "The Romance Novelist"</ref> and gets annoyed when he says he can't recall someone like that.
*Ran has a flashback to when she saw a younger Masumi, who is wearing a bathing suit, say, "You are a wizard, right?". Ran also feels that she has met [[Mary]].<ref> Manga [[Volume 86]], File 1 (905)</ref>
*The meeting occurred 10 years ago, as mentioned by Mary.<ref> Manga [[Volume 90]], File 5 (953)</ref>
*Masumi puts on a swimsuit similar to the one in Ran's flashback in order to jog Conan's memory, which results in him remembering her in that bathing suit as well, along as three other people, assumed to be her relatives. <ref> Manga [[Volume 91]], File 11 (969)</ref>

In Chapter 771, it is revealed that she also knows Professor Agasa, although she calls him "Professor what's his name". Although this could be explained away as her talking to Conan off screen and her just not remembering Agasa's name.

=== Identity of Masumi's middle brother ===
{{main|Akai family's middle brother}}

=== The Wizard ===
In a PS, [[Akai family's middle brother|Masumi's middle brother]] asks if she "has already met the Wizard?"<ref name=861p15-16>Manga Volume 81, File 11 (861), pg 15-16: "Just like Magic"</ref> Masumi's thought reply is "You could say so..." Later, Masumi "thinks aloud" that her reason for returning to Japan is to meet the Wizard once more.<ref name=874p8>Manga [[Volume 83]], File 2 (874), pg 8: "The red past"</ref> The identity of the Wizard is still unclear.

==== Shinichi Kudo ====
Tellingly, Masumi turns towards Conan when thinking of the answer "You could say so". At this point Masumi seems to know Conan is Shinichi. If Shinichi was nicknamed "The Wizard" by Masumi and/or her brother because of what happened when he and Masumi met in the past, then the response is appropriate since she could only sort of meet with Shinichi, because Shinichi shrunk into Conan. It's possible that the event where Shinichi earned the nickname "The Wizard" was Shinichi and Ran's meeting with Masumi 10 years ago. When trying to remember Masumi, Ran specifically mentions "sounds of rippling waves, as if some sort of magic were at work."<ref name=846p4>Manga [[Volume 80]], File 7 (846), pg 4: "The Magic Lock"</ref> A "magical" incident, if it was Shinichi's doing, might have earned him the nickname. Ran has a flashback of a young Masumi saying "You are a wizard, right?".<ref> Manga [[Volume 86]], File 1 (905)</ref> Conan seems to have remembered meeting Masumi 10 years ago and is shown as a young Shinichi standing in front of a large wave.<ref> Manga [[Volume 92]], File 2 (971)</ref>

==== Someone else ====
At this point it is unlikely that the Wizard is anyone else. There is evidence that Masumi nicknamed the person who she calls Wizard, at a point in the past while Ran was nearby. If Ran was nearby, then this would have to have happened when they first met 10 years ago, meaning that the person must be someone who existed back then. The topic of the Wizard came up during a text conversation about Conan between Masumi and her middle brother, and her response to if she had met the Wizard again was "You could say so", which is more than likely implying that she is referring to Conan, and therefore Shinichi.

[[File:Akai's picture 338.PNG|thumb|right|The picture of the Detective Boys the mystery assistants captured]]
===Masumi learned about Haibara from Shuichi's picture===
Masumi initially had an interest in Haibara. This is strange because Haibara didn't exist prior to Shiho shrinking. The knowledge of Shiho should have been secret to her as well, because Shuichi Akai's infiltration of the Black Organization was a secret. If Masumi doesn't even know the details of her brother's death, why should she know about Shiho? Masumi may recognize Haibara from pictures of Conan and Haibara that Shuichi took back during the Vermouth arc. It is standard procedure in the US to send the personal belongings of the dead back to their families. If Shuichi mixed these pictures in with his own things when he took them out of his truck before meeting with Kir, it's possible they were overlooked when the FBI sent Shuichi 's things to his family. If Masumi was interested in finding out how and why Shuichi died, she would begin by researching the people in those pictures and those connected with them in hopes of finding clues.
{{clear}}


==Character popularity==
*In honor of the release of the 800th manga chapter, Shonen Sunday held a popularity poll/contest containing 91 Detective Conan characters to choose from. Masumi placed 9th overall with 292 votes.<ref>{{cite web|url=http://forums.dctp.ws/viewtopic.php?f=4&t=8024|title=Shonen magazine detective conan official poll results published [magazine pic]|date=2012-02-28|publisher=eva|accessdate=2012-02-29}}</ref>

*Masumi ranked 10th in the Digest Book 50+ poll "Best Detective Conan characters", with 107 votes.

*Masumi ranked 5th in the Digest Book 60+ poll "Cutest Detective Conan characters", with 135 votes.

*Masumi ranked 10th in the Digest Book 70+ poll "Characters you want to go on a date with", with 106 votes.

*Masumi ranked 11th in the Digest Book 80+ poll "Character you want to marry", with 281 votes.

==Name origin==
{{Nihongo|Masumi Sera's|世良・真純|Sera Masumi}} name comes from the [[wikipedia:Mobile Suit Gundam|Mobile Suit Gundam]] character {{Nihongo|[[wikipedia:Sayla Mass|Sayla Mass]]|セイラ・マス|Seira Masu}}.<ref>[[Sherry's soliloquy|Sherry's soliloquy (2012-06-17)]], Gosho was referring to the revelation that Masumi is Shuichi's sister (Manga File 821): {{lang|ja|やっぱりアルテイシアだったのね・・・}} (So it was '''Artesia'''…). Note that "Artesia" is another name of '''Sayla Mass'''.</ref> The kanji for Masumi's surname mean 'good world'. The kanji for her first name, Masumi, mean 'true' and either 'pure' or 'net.'

==Quotes==
{{cquote|Deletion. For data at least ... is an easy task to accomplish.|Masumi, on deleting a picture of Haibara from her computer, File 777 pg 16}}

{{cquote|I guess I'm a bad kid after all...|Masumi, while crying, File 814 pg 16}}

==Trivia==
*Masumi is based on [[Natsuki Koshimizu]], a tomboy detective girl turned criminal who made her first appearance in the [[Volume 54#Detective Koshien Case|''Detective Koshien Case'']]. Since Natsuki had proven highly popular, but Aoyama couldn't recycle her as a protagonist, the character of Masumi was created instead.<ref>''Shonen Sunday'' #33</ref>
*When she was young she liked to read the "[[Night Baron]]" series, so she is fan of [[Yusaku Kudo]].
*Her catchphrase, "Case Closed" (said in English), is likely a reference to the English-language name of Detective Conan.
*Masumi owns an [[Vehicles_in_Detective_Conan#Sera's Yamaha_Artesia_XT400|Artesia XT400]].
*In File 859, Masumi reveals that she has a second-older brother and that her oldest brother taught her Jeet-Kune-Do.
*Masumi speaks Queen's English.<ref>[[:File:Postcard2015 1.jpg]]</ref>

==In other languages==
{{BeginTable CharLang}}
{{OtherLangItem|flag=Japan|Japanese|真純 Masumi|世良 Sera}}
{{OtherLangItem|flag=Arab League|Arabic|ماسومي Māsūmi|سيرا Sēra}}
{{OtherLangItem|flag=France|French|Masumi|Sera}}
{{OtherLangItem|flag=Mexico|American Spanish|Masumi|Sera}}
{{OtherLangItem|flag=Brazil|Brazilian Portuguese|Masumi|Sera}}
{{CharLangItem|flag=Italy|Italian|Masumi|Sera}}
{{CharLangItem|flag=North Korea|flag2=South Korea|Korean|세라 Sera|양 Yang}}
{{OtherLangItem|flag=Thailand|Thai|มาสึมิ Mās̄ụ-mi|เซระ Sera}}
{{EndTable}}

==See also==
* [[Characters]]
* [[Akai family]]

==References==
<references />

{{DEFAULTSORT:Sera Masumi}}
[[Category:Characters]]
[[Category:Female characters]]
[[Category:Detectives]]
[[Category:High school detectives]]
[[Category:High school students]]
[[Category:Martial artists]]
[[Category:Characters who know Conan's identity]]
[[Category:Characters named after Mobile Suit Gundam characters]]
[[Category:This page has images with hideous anime aggregate site watermarks]]
[[de:Masumi Sera]]
{{Characters}}

Masumi Sera

2017-03-20T18:50:47Z

8627937131f701a286774c43a25313a3: /* Appellations */

{{FeaturedArticle|March 23, 2011}}

{{SpoilerWarningArticle|This article contains significant '''[[Glossary#Spoiler|spoilers]]''' about major events concerning this person. It is likely you will be spoiled if you have not read all the manga released to date. To find out what pages will be safe for you to read, please consult our [[Glossary#Spoiler|wiki spoiler policy]].}}

{{InfoBox Char
| name = Masumi Sera
| japanese-name = {{lang|ja|世良真純}} (Sera Masumi)
| english-name =
| image = Masumi_Sera_Profile.jpg
| age = 16-17? 
| gender = Female
| date-of-birth =
| occupation = Teitan High School Student Detective
| relatives = [[Tsutomu Akai]] (father, deceased) [[Mary Sera]] (mother) [[Shuichi Akai]] (older brother) [[Shukichi Haneda]] (second-older brother)
| nicknames =
| first-appearance = Manga: [[Volume 73|File 768]] Anime: [[Deduction Showdown at the Haunted Hotel|Episode 646]]
| appearances = {{:Masumi Sera Appearances}}
| keyhole = [[Volume 73]]
| japanese-voice = [[Noriko Hidaka]]<ref>{{cite web|url=http://combination.jp/blog/2012/02/post-383.html|date=2012-02-01|accessdate=2012-02-01|title=新しいお仕事 | Blog | コンビネーション|publisher=combination Co.Ltd.|author=Noriko Hidaka}}</ref>
| cases-solved = 5
| footnotes =
}}
'''{{nihongo|Masumi Sera|世良真純|Sera Masumi}}''' is a high school detective in the manga and anime franchise ''[[Detective Conan]]''. She is the younger sister of [[Federal Bureau of Investigation|FBI]] agent [[Shuichi Akai]] and a practitioner of the martial art [[wikipedia:Jeet Kune Do|Jeet Kune Do]].

== Background ==
Masumi Sera is a high school detective and the younger sister of [[Federal Bureau of Investigation|FBI]] agent [[Shuichi Akai]]. She is the only daughter of [[Tsutomu Akai]] and [[Mary]]. 17 years ago, her father, before he disappeared, instructed his family to hide in Japan, where Masumi later was born. Her oldest brother had prior to her birth left Japan to study in America, so they first got to meet each other when Masumi was six-seven years old. Although she grew up in Japan during her elementary school years, she moved abroad three years ago with her mother, presumably due to Shuichi infiltrating the [[Black Organization]]. She has recently returned to Japan for some unknown reason. After meeting Conan, Ran, and Sonoko during a case, she transfers to [[Setting#Teitan High School (帝丹高校)|Ran's high school class]]. Masumi is skilled at [[Wikipedia:Jeet Kune Do|Jeet Kune Do]], a hobby encouraged by her brother Shuichi who mailed her instruction videos while in elementary school. She can fight on the same level as [[Ran Mouri|Ran]]. She seems to know that Conan is Shinichi and implies that she met Ran and Shinichi sometime in their past. Currently she is living with [[Mary]], whom she calls "Mama", at a hotel. She claims that she is provided for by a rich friend of her late father, but it hasn't been revealed who it is. Every time they encounter the possibility of information on Mary getting out, they end up moving to a new hotel under Mary's order. While Masumi is eager to seek help from Conan, Mary is skeptical of him.
She also has another older brother, and the three siblings has different last names. Sera is supposedly her mother's maiden name.

==Personality==
[[File:691-15.png|thumb|Masumi beats a gangster in [[Yusaku Kudo's Cold Case]]]]

Masumi has a cheery, sociable, boyish personality<ref>Manga Volume 73, File 9, Page 3, "Let's hear your brilliant deduction!"</ref> and is well liked by her classmates at Teitan High. On their first meeting, Masumi fails to correct Sonoko's mistaken impression that she is a man and even makes it worse by declaring that Ran is "[her] type".<ref name=pronouns>The Japanese pronoun used is gender neutral and can refer to either males or females.</ref> Her rather boyish appearance - especially in relation with her flat chest - is a bit of a touchy subject to Masumi, who claims that her mother's bust size is rather well developed and keeps expressing her hope that someday her own chest size will similarly change for her.

Masumi is quite quick-minded, coming up with clever plans and adapting them to sudden changes rapidly. Masumi seems to be prone to dramatics like most detectives are, but perhaps to a lesser degree than [[Shinichi]] or [[Heiji]] as she bluntly says who the criminal is without preamble. On the other hand, Masumi is tough to the point that she is willing to risk all to achieve a successful conclusion of a case. In one instance, she purposefully lured a hostage-taker into a sniper's sight with a smile, hoping he would be shot without showing any apprehension about his possible demise.

Although she has crime scene experience<ref name=769p3>Manga Volume 73, File 7, pg 3: "A Detective Just Like You, Little Boy"</ref>, Masumi seems to be less skilled as a detective than Shinichi or Heiji, apparently missing a critical clue that was necessary to understand how the murderer's setup worked, although Conan opines that Masumi purposely made an error in order to test him. In some degree, she seems to like rivalry or contests to see who is the winner.

Sera's catchphrase upon the conclusion of a case is "case closed".

Sera shows a protective and caring side towards Conan, as seen in the Detectives Nocturne and in the beginning of the Red Woman case when she helps Conan up after falling, as well as having it made clear in the Haunted Hotel case that she was also clearly investigating Conan before they first met, as she knew he was a detective. Its likely to believe that them being on the same bus was not an accident, which could even lead to be argued that she somehow hinted to them about the cake buffet so they would be on the same bus as her. It is safe to assume though she was, and possibly still is, investigating Conan.

Sera's way of referring to her parents as 'Mama' and 'Papa' indicates a privileges background.

== Appearance ==
[[File:Sera_transfers.png‎|thumb|Masumi transfers to Teitan High School]]

At first, she wears a grey fedora that used to belong to Shuichi Akai and a dark jacket which gives her an androgynous appearance. When she transfers to Teitan High, she gets rid of her fedora and wears female clothing. Her hair is dark, wavy, and short; it doesn't even touch her shoulders. Even then, she is rather tomboyish; Genta mistakes her for a man, and Sonoko comments she has a petite figure. Later, Genta, Mitsuhiko and Hattori comment that her bosoms are rather small. Masumi also has an uneven tooth that shows when she smiles.

Masumi and her brother Shuichi presumably more closely resemble their mother than their father.
{{clearleft}}

==Appellations==
<tabs jsId="nicknames">
<tab title="Protagonists">
{{appellations/head|Masumi}}
{{appellations|Conan Edogawa|Sera-san Sera-no-nēchan Sera Sera Masumi<ref name="file930">[[Volume 88#A Killer in Ramen Ogura|File 930 (Volume 88)]]</ref> [[Shuichi Akai|Akai-san]]'s younger sister (''Akai-san no imōto'')|Conan-kun Edogawa Conan-kun<ref name="file771">[[volume 73#Bomber's Request|File 771 (Volume 73)]]</ref> Boy (''Bōya''; first time) Wizard (''Mahō-tsukai'')}}

{{appellations|Shinichi Kudo|Sera Masumi (movie introdcution)<ref name="m18">Movie 18: ''[[Dimensional Sniper]]''</ref>|Kudo-kun Shinichi-kun Kudo Shinichi-kun<ref name="ep690">[[Yusaku Kudo's Cold Case|Episode 690]]</ref>| Kudo Shinichi}}

{{appellations|Ran Mouri|Sera-san Sera Masumi-chan<ref>File 778</ref> Sera-chan|Ran-chan Ran-kun}}

{{appellations|Kogoro Mouri|Tomboy-ish Girl|Kogoro-san Poiro-san ([[Hercule Poirot|'''Poiro'''t]] + Kogo'''ro''')<ref>[[Volume 78#Mystery Train|File 820 (Volume 78)]]</ref> Sleeping Kogoro-san (''Nemuri no Kogoro-san'')<ref name="file771" />}}
|}
</tab>
<tab title="Friends & relatives">
{{appellations/head|Masumi}}
{{appellations|Tsutomu Akai|-|Papa}}

{{appellations|Mary Sera|Masumi<ref name="file953">[[volume 90#Soul Detective Murder Case|File 953: As If Connecting with a Demon in the Darkness (Volume 90)]]</ref>|Mama<ref name="file953" /> The little sister from outside the domain (''ryōiki-gai no imōto'')}}

{{appellations|Shuichi Akai|Masumi|Shu-nii Oniichan<ref name="file972" /> Aniki<ref name="file936">[[Volume 88#Girls Band Murder Case|File 936]]</ref> Akai Shuichi<ref name="file938">[[volume 89#Girls Band Murder Case|File 938: The Crime in the Blind Spot (Volume 89)]]</ref> Ani<ref name="file859">[[volume 81#Bumper Brawn|File 859: Jeet Kune Do vs. Karate (Volume 81)]]</ref>}}

{{appellations|Subaru Okiya|Sera Masumi-san<ref name="file954">[[Volume 90#Bourbon's Mission|File 954: Sanction of the Betrayal (Volume 90)]]</ref> Sera-san<ref name="file954" />|Subaru}}

{{appellations|Shukichi Haneda|Masumi<ref name="file972">[[volume 92#A Chance Meeting at the Beach|File 972 (Volume 92)]]</ref>|Kichi-nii ([[Gosho Aoyama|Gosho]]'s thought)<ref>[[:File:AChint8-06-2014_4.JPG]] (Sera-chan calls him Kichi-nii)</ref> Kichi-niichan<ref name="file972" /> Aniki Chukichi (talking to [[Yumi Miyamoto|Yumi]])<ref>[[Volume 88#A Killer in Ramen Ogura|File 929 (Volume 88)]]</ref>}}

{{appellations|Sonoko Suzuki|Sera-san Sensei (once) Sera-chan Female High-School Detective (''JK Tantei'')<ref name="file938" /> Sera Masumi-san<ref name="file859" />|Sonoko-chan Sonoko-kun}}

{{appellations|Heiji Hattori|Female detective (''onna-tantei'')|Hattori-kun}}

{{appellations|Kazuha Toyama|-|The girl with the ponytail}}

{{appellations|Katsumasa Ogura|Mari-chan<ref name="file930" />|Taisho<ref name="file930" />}}
|}
</tab>
<tab title="Law enforcement">
{{appellations/head|Masumi}}
{{appellations|Juzo Megure|Female High-School Detective (''Jōshi-Kōsei Tantei'')|Inspector-san (''Keibu-san'')}}

{{appellations|Wataru Takagi|Sera-kun|Detective Takagi (''Takagi-keiji'')<ref>[[Volume 86#Poolside Case|File 905 (Volume 86)]]</ref>}}

{{appellations|Andre Camel|-|"FBI Guy"}}

{{appellations|Ginzo Nakamori|Boy (''Bōzu'')<ref name="file828">[[Volume 78#The Blush Mermaid|File 828 (Volume 78)]]</ref>|Inspector-san (''Keibu-san'')<ref name="file828" /> Inspector (''Keibu'')<ref name="file828"/>}}

{{appellations|Rei Furuya|-|Amuro-san<ref name="file937">[[Volume 88#Girls Band Murder Case|File 937]]</ref>}}

{{appellations|Scotch|-|Scotch<ref name="file937" /> [[Shuichi Akai|My brother]]'s friend (''Aniki no yūjin'')<ref name="file936" /> The friend (''sono yūjin'')<ref name="file936" />}}

{{appellations|Jugo Yokomizo|Young girl (''wakai no'')<ref name="file858">[[volume 81#Steamy Relations|File 858: A Problematic Deduction (Volume 81)]]</ref>|Inspector-san (''Keibu-san'')<ref name="file858" />}}
|}
</tab>
<tab title="Detective Boys">
{{appellations/head|Masumi}}
{{appellations|Ai Haibara|Sera Masumi<ref name="m18" />|Haibara Ai}}

{{appellations|Ayumi Yoshida|Onēsan<ref name="m18" />}}

{{appellations|Hiroshi Agasa|-|Professor Agasa (''Agasa-hakase'')}}
|}
</tab>
<tab title="Others">
{{appellations/head|Masumi}}
{{appellations|Yusaku Kudo|-|Kudo Yusaku<ref name="ep690" />}}

{{appellations|Yukiko Kudo|Sera<ref>[[Volume 78]], File 6</ref>|-}}

{{appellations|Scar Akai|Masumi<ref name="MT">[[The Jet-Black Mystery Train]]</ref>|Shu-nii<ref name="MT" /> Acquaintance (''shiriai'')}}

{{appellations|Makoto Kyogoku|-|Master of Karate (''Karate no Tatsujin'')}}

{{appellations|Kohji Haneda|-|Haneda<ref>[[volume 90#Soul Detective Murder Case|File 952: In the Suspicious Next Room (Volume 90)]]</ref> Haneda Kohji<ref name="file953" />}}

{{appellations|Asaka|-|Asaka<ref name="file953" />|file=Asaka manga.jpg}}
|}
</tab>
</tabs>

==Plot overview==
=== Masumi's Introduction (Manga: [[Volume 73#Jeet Kune Do|768 - 770]], Anime: [[Deduction Showdown at the Haunted Hotel|646 - 647)]] ===
[[File:Sera_Kick.png|thumb|right|Masumi defends herself from Ran.]]
Masumi first met [[Sonoko Suzuki|Sonoko]], [[Ran Mouri|Ran]], and [[Conan Edogawa|Conan]] on a bus after she was mistaken for a [[Wikipedia:Groping|groper]]. After Sonoko declared Masumi was the groper, Masumi and Ran got into a fight, with Masumi's Jeet Kune Do holding even against Ran's karate. Conan and Masumi cleared up the misunderstanding by pointing out the real groper. Sonoko then mistook Masumi for a boy, an impression which wasn't helped by Masumi declaring that Ran was "his type".<ref name=pronouns/> Masumi and Ran both discovered they were heading to the same hotel, about which Conan is less than pleased.

Masumi finds out the hotel she is staying at doesn't have a room available and complains at the front desk. A man then falls into the parking lot and dies. Conan runs to the source of screaming while Masumi told the guard to watch the elevators before running to the roof. She immediately declares the crime to be a murder, giving her reasoning. She then reveals her name, Masumi, that she is a detective, and knows Conan is a detective as well. She also revealed before she knew Conan's name despite it not being mentioned in front of her, revealing that Masumi has been investigating Conan for awhile now.

[[Juzo Megure|Inspector Megure]] is not pleased to have another high school detective underfoot but lets Masumi and Conan investigate regardless. After listening to the suspect testimony, police observations, and examining the crime scene, Masumi announces that she has solved the case.

However, Masumi's deduction leaves out a critical detail; Conan is therefore forced to use Shinichi's phone to call his own, give Inspector Megure Conan's phone, and speak through Shinichi's as Shinichi using the voice-changer bow tie. Shinichi figures out the detail that had Masumi stumped, although a look she gives Conan as he runs off suggests her omission was possibly intentional, and once during the phone conversation she tries to trick Shinichi into admitting that he is physically present at the crime scene instead of being explained the details by Conan and Megure.

The following day, Masumi transfers to Teitan High School, surprising both Ran and Sonoko. She was rather popular at school surrounded by students asking her questions about herself.

===Kogoro Detective Agency Hostage Crisis (Manga: [[Volume 73#Bomber's Request|771]]-[[Volume 74#Bomber's Request|774]], Anime: [[Hostage Situation at the Mouri Detective Agency|648 - 650]])===

====Let's hear your brilliant deduction! (771)====
According to Sonoko, Masumi has become very popular at Teitan high for being "cheery, sociable, boyish, and cute...and on top of that, she is a jeet kun do-using female detective!"<ref>Manga Volume 73, File 9, Page 3, "Let's hear your brilliant deduction!"</ref> One classmate compares her to [[Shinichi Kudo]] who has been taking a break from school. Masumi tells inquiring classmates that she has been staying in America with her parents since three years ago, but "rebelled" because she would rather live in her Japan where she was born and raised. She sneaks up behind Sonoko and Ran after school because she wanted to speak to Conan at the Mouri Detective Agency. At the agency, Masumi is unhappy to hear that Conan and the rest of Detective Boys are staying at Agasa's house and will be camping the following day. She settles for asking Kogoro if Conan is always at his side when he solves cases, hinting that she suspects Conan is the real brains behind "Sleeping Kogoro".

[[File:Sera_slide_kick.png|thumb|left|Masumi sweeps out the Hostage Taker's legs]]
Just as Masumi is about to walk out the door, three female mystery writers and a man enter the agency. After a moment of confusion, the man suddenly fires a gun into the roof and takes the detective agency hostage. His demands are that Kogoro figure out which of the three writers killed his sister at a ryokan one month ago. The quick thinking Masumi sidles up to Ran and tells her to go for the man's gun after she takes his legs out. Sera's leg sweep sends the man to the floor, and Ran removes the gun from the man's hand with a kick; however, Masumi leaps back when the man reveals he has bombs strapped around his chest and will detonate them if they try to stop him.

Meanwhile at Agasa's, Haibara is angry that Conan used Shinichi's voice to solve a case around the suspicious Masumi. Conan's response is that Masumi is familiar somehow, like they have met before or she looks like someone, and Conan feels she isn't an enemy. Genta and Mitsuhiko told Conan they saw a high school student walking home with Ran, so the jealous Conan calls Ran's cellphone to hear about it from her.

The hostage taker man orders Ran to answer her phone, but Masumi snatches the phone away and says hello to Conan (who is shocked that Masumi is with Ran). Masumi then tricks the hostage taker and keeps the line connected so Conan can listen in by closing Ran's [[Yaiba#Characters|Sea Cucumber Man]] cellphone strap in between the screen and keypad of the the flip phone.

====Nickname Rules (772)====
Masumi asks a few insightful questions about the case; however the hostage taker man discovers Ran's phone is still connected. Under gunpoint, Masumi steps in front of Ran and takes the blame, but Conan, using Shinichi's voice, says he ordered Ran to do it. Masumi is mystified by why Shinichi is now on Conan's phone. Masumi meanwhile spots a glint of light across from the detective agency and declares that the case will come to an end without Shinichi's help.

====Possible Sniping (773)====
[[File:Sera773.png|thumb|right|Masumi surprised by Ran's attitude.]]
Masumi explains to Ran that she secretly kept the call to Conan connected so he could call the police and research into the case. While Masumi is still surprised that Shinichi was on the other end of the line instead of Conan, she had initially hoped that Shinichi would somehow be able to talk down the would-be-murderer. She suspects that Shinichi has already figured which one of the suspects is the murderer in the ryokan case, but Shinichi is unable to reveal the truth because the hostage taker would then kill the named culprit and then himself. Sera's plan changed when she noticed the lights from the police snipers on the building across from Mouri Detective Agency. She explains to Ran in detail the names and functions of the various police divisions responsible for hostage situations, and tells Ran in a roundabout fashion that this situation will end with the hostage taker being killed by the police.

Masumi launches a plan to bring the hostage taker into the snipers' range by telling him he should charge Ran's phone battery. Ran foils Sera's intentions by shutting the curtains, blocking the snipers' shot. To Masumi's utter astonishment, Ran tells her that she doesn't want to see anyone die in front of her and declares that "Shinichi won't allow anyone to die. He absolutely wouldn't!"<ref>Volume 73, File 11, page 13, "Possible Sniping." Shinichi then begins to present his deductions over the phone and Masumi wonders how he will manage to resolve this situation without bloodshed.</ref>

====The book with unturned pages (774)====
Masumi and Ran take the opportunity to disable the hostage taker when he loses his composure and grip on the detonator after Shinichi tricks him into believing his sister committed suicide. Masumi yells for the waiting bomb squad to secure the area. With the hostage taker arrested, Shinichi then reveals the true culprit. Masumi realizes the mistake in her deduction and explains the correct timeline of events before the murder. Sometime soon after the conclusion of the case, Masumi, walking with Ran and Sonoko speculates aloud that there must be some reason Shinichi left Agasa's before Ran could meet him there. She then exclaims that "due to what just happened, she really gets it", that Conan and Shinichi are on very good terms with one another, and that Ran "is tougher than Masumi thought". Conan isn't sure what to make of these last comments.

===Video Site (Manga: [[Volume 74|775-777]], Anime: [[The Professor's Video Site|656-657]])===
[[File:Ai image.png|thumb|Masumi deletes Haibara's image]]

Masumi stops [[Genta Kojima|Genta]] and [[Mitsuhiko Tsuburaya|Mitsuhiko]] outside of [[Hiroshi Agasa|Agasa]]'s house to ask them if they are acquaintances of Professor Agasa. The topic of [[Shinichi]] comes up when she talks to Mitsuhiko and Genta about the prior hostage case. Mitsuhiko mentions that [[Ai Haibara|Haibara]] told them to keep Shinichi's involvement secret. After asking about Haibara, Masumi mentions that she saw Haibara in one of the professor's online videos. Next, Masumi asks who is currently living in the Kudo house because she saw the curtains shift slightly. The Detective Boys tell her that [[Subaru Okiya]] has been staying there since his apartment burnt down. Masumi cryptically comments with a smirk on her face, "And here I thought that someone had just settled in without permission...But it seems I was just getting worked up over nothing..." while looking up at where Subaru is hiding.

At the end of the case, Masumi is in her hotel room deleting various files. One of her deleted files was a still image from Agasa's video blown up to show Haibara reflected in Agasa's glasses. This indicates that she is not only keeping an eye on Conan but also on Haibara.
"Delete... Delete... For data, at least is an easy task to accomplish...", were her words while she was doing it.

===East vs. West Rematch (Manga: [[Volume_74#East_vs._West|778-780]], Anime: [[Conan vs. Heiji, Deduction Battle Between the Detectives of the East and West|651]])===
[[File:Sera FBI.png|thumb|left|Masumi thinks about the FBI]]
The case opens with Ran talking to Masumi about [[Heiji Hattori]] who is stopping by for a visit. Masumi is curious whether Heiji or Shinichi is the better detective. After Heiji is introduced to Masumi, Kazuha then calls Heiji and tells him that she is stuck at a restaurant because someone died and a foreigner [[Andre Camel]] is keeping everyone from leaving. Masumi proposes Heiji and Shinichi (via Conan's cellphone) have a deduction match. At the crime scene, Masumi becomes curious about the foreigner, Camel who secured the area. The police and Conan reveal Camel is an [[Federal Bureau of Investigation|FBI]] agent and Masumi takes interest. Meanwhile, Camel finds that Masumi looks familiar, but can't quite place why. He takes a picture of her and mails it to [[Jodie Starling|Jodie]] and [[James Black]] who are waiting outside. Jodie and James think Masumi resembles someone too, but only James Black correctly identified Masumi as female.

Meanwhile Masumi is busy helping with the case, asking questions and making comments about various deductions. Heiji nearly slips up with Conan's identity in front of her earning a pointed question from Masumi, but Heiji rescues himself by saying he thinks of Conan as Kudo when Conan gets smug have hearing Shinichi's deductions over the phone. Masumi doesn't seemed to be fooled though, her thoughts show that she seems to know Conan, not Shinichi, is the one solving the case while watching Conan come to his final conclusion.

===EYE (Manga: [[Volume_74#Eye_for_an_Eye|781]], Anime: [[The Design of Poison and Mirage|652]])===
Conan, Heiji, Masumi, and the rest of the group return to the Mouri Detective Agency after the poisoning case at Danny's restaurant. Heiji reveals the case that brought him to Tokyo; he received a mysterious letter signed in the name of a person who was murdered in Karuizawa requesting an investigation. Masumi takes an immediate interest in the case and wants to tag along, but Heiji refuses saying that the people he is visiting are only expected five people. Masumi is peeved at being left behind.

===Kogoro-san is a Good Man (Manga: [[Volume 75|787]], Anime: [[Kogoro-san is a Good Man|661]])===
Masumi is walking with Conan, Ran and Sonoko. While they wonder why Kogoro has been coming home late, Sonoko thinks he's found himself a mistress. Masumi thinks that he is just investigating a case. When an old lady named Takae Kiritani comes, she claims that Kogoro has been helping her. Masumi asks what he does for her to which she replies that its small things like helping around the house. Masumi isn't seen again for the rest of the case.

===Murder at Mouri Detective Agency (Manga: [[Volume 76|797-800]], Anime: [[Detectives' Nocturne|672-674]])===
[[File:Sera's motorcycle.jpg|thumb|right|Masumi in her motorcycle.]]
During a murder case at Mouri Detective Agency, after meeting Kogoro's new apprentice [[Rei Furuya|Tooru Amuro]], [[Juzo Megure|Megure]] comments that the number of detectives around Kogoro has increased again, referring to Masumi. Amuro takes interest in Masumi. Later, Kogoro and friends go over to a suspect's apartment. Masumi calls Ran after hearing about the murder on the news because she is worried about her and Conan. The call has an usual amount of static which alerts Amuro that there are listening devices present. Amuro abruptly hangs up Ran's phone on Masumi. Meanwhile, Conan intentionally gets himself kidnapped by the primary suspect. After Ran enables calling again, Masumi calls back immediately and is very upset because she was worried something had happened to Ran. Ran tells her that Conan has been kidnapped, and details to Masumi the murder at Kogoro's agency. In order to figure out where the kidnapper is headed, Kogoro and Amuro search the apartment and decide to go to the address of one of the other suspects.

Masumi arrives at suspect's home on [[Cars|her motorcycle]], but just misses Kogoro and the gang leaving. She hears the elevator descending and rushes back downstairs in time to follow Amuro's [[Cars|car]]. Meanwhile, the culprit has been driving around with Conan while Haibara has been directing Okiya's car towards them using the criminal tracking glasses. Okiya catches up to the kidnapper and relays what the car looks like to Kogoro. Amuro sees the suspect's car heading in the opposite direction so he quickly wheels around after it. Masumi, who has been following Amuro's car this whole time, u-turns after Amuro and continues chasing. Amuro gets in front of the suspect's car and stops it. The suspect gets out of the car holding Conan at gunpoint, but Masumi drives up onto the roof of the car. She swings her motorcycle around so that the rear wheel slams into the woman's face knocking her unconscious. With tears of relief, Masumi hugs Conan, happy he is safe. Amuro, Okiya, and [[Vermouth]] look on.

===Meeting with Scar Akai (Manga: [[Volume 76|801]], Anime: [[Won't Forgive Even One Millimeter|675]])===
[[File:Sera_675.jpg|thumb|left|220px|Masumi looking for Scar Akai.]]
Masumi is walking with Sonoko and Ran, and Ran is talking by phone with Conan. Masumi hears Haibara's voice in the background and becomes curious. She asks the two others what Haibara is like, and Sonoko says Haibara is like a woman in a child's body.

When Ran hangs up her cellphone, the topic switches over to [[Rei Furuya|Amuro]]. Masumi says to Ran she wants to meet Amuro because she never got a really good look at him from the last case, but Sonoko thinks she wants to meet Conan, instead. Ran says Shinichi and Conan are big fans of Sherlock Holmes. Masumi thinks about that she has known that for a long time.

Suddenly, Masumi sees [[Scar Akai]] in the crowd ahead. She runs after him, but she can't catch him. Ran wonders who Masumi was chasing, but Masumi replies she thought it was someone she knew, and silently appends in her mind that it would be impossible for the man she was chasing to be the person she thinks it was.

[[File:690-3.png|thumb|Masumi is shocked to see Subaru]]
===Yusaku Kudo's Cold Case (Manga: [[Volume 77|812-814]], Anime: [[Yusaku Kudo's Cold Case|690-691]])===
Masumi meets [[Subaru Okiya]] at Shinichi's house and she finds him suspicious. She began to think there is a woman at Kudo's house because there are a hair elastic, lipstick in a glass and a long hair in the sink trap. After that, all of them solved a case together that is similar to a case that Shinichi Kudo's father dropped out 10 years ago. It was revealed to be a theft case. Both Subaru and Masumi had got more suspicious of Conan and the identity of Shinichi Kudo. At the end, when the criminals were knocked, she saw Ran and Conan and she thought she was a 'bad kid', after all.

===Gunma Campground's Cabin Trap (Manga: [[Volume 77|815-817]], Anime: [[The Shadow Approaching Haibara's Secret|699-700]])===
[[File:Masome.png|thumb|left|120px|Masumi at the campground]]
She went camping when she meets Professor Agasa and Conan. The Detective Boys were lost. Masumi and Conan found the two policemen finding the corpse. After she and Conan solved the case, she and Conan rushed towards the burning cabin. Conan and the Detective Boys were talking about how they got safe. Mitsuhiko pointed the way were their savior went. Masumi then began to ask what kind of woman is their savior. She seemed to be surprised when she saw her on Mitsuhiko's cell phone.
{{clear}}
[[File:new-sera.png|thumb|left|150px|Masumi leans in to get a good look at Haibara]]
[[File:Sera is akai sister.jpg|thumb|right|200px|Masumi is revealed to be Shuichi's sister.]]

===Mystery Train (Manga: [[Volume 78|818-824]], Anime: [[The Jet-Black Mystery Train|701-704]])===
Masumi finally meets Haibara, and Haibara has a bad feeling about her (although it could have been due to Scar Akai spying on them from behind the door just then). Later when a murder occurs on the Bell Tree Express, she and Conan investigate. Masumi takes a video recording of the suspects running so she can show it to the detective boys in order to ask them which one had the closest gait to the masked suspect from earlier, but she is intercepted first by Scar Akai in the hallway. She stops and angrily asks him who he is. Scar Akai simply replies that she hasn't changed, reveals his face to her, and refers to her by her first name, "Masumi". In her shock Masumi calls him "Shu-nii", signifying that Shuichi is Masumi's older brother. She questions Scar Akai about what happened, saying that she heard he had died. Scar Akai then tasers her unconscious, stating that he was hoping for that response. Scar Akai later is revealed to be Vermouth in disguise, explaining why he attacked Masumi.

===The Blush Mermaid Heist (Manga: [[Volume 78|828]]-[[Volume 79|830]], Anime: [[Kaitou Kid and the Blush Mermaid|724-725]])===
[[File:SeraHat.jpg|left|thumb|200px|Masumi is relieved that she has got her hat back.]]
Masumi accompanies Conan, Ran, and Sonoko to the location of Kaitou Kid's next heist: a museum where the Blush Mermaid, a gem adhered to the shell of a turtle as a last ditch effort by a an Italian actress in an accident at sea to save her turtle by encouraging someone to rescue it. Before checking out the museum, Masumi asks Ran if she saw a [[Scar Akai|strange man in black]] when she found the hat on the Belltree Express. After the group arrives at the room where the turtle is being held in a large aquarium, [[Ginzo Nakamori|Inspector Nakamori]] pulls Masumi's face to see if it is a mask worn by Kid. Annoyed by Nakamori's mistaken gender assumption and having her face pinched, Masumi knees him in the privates ostensibly to prove he isn't Kid. Masumi then runs off to the bathroom. Later, when Kid makes his move, Masumi is one of many caught in his trap: the rug on the floor is pulled up by strings so that it pins everyone standing on it to the front of aquarium. As soon as the rug drops, everyone sees the tank is empty except for a card left by Kid. This leaves Conan and Masumi quite dumbfounded as to how Kaitou Kid could have removed the turtle. Later, Conan reveals that Masumi is really Kaitou Kid, and he had made a critical error in his acting by assuming Masumi was a male. Kaitou Kid had locked the real Masumi bound and gagged in the men's bathroom after knocking her out with a stun gun. Upon gaining consciousness, Masumi escapes her bonds, rushes out of the bathroom, and gives a still disguised Kid a fierce kick to the face. After Kid escapes (due to Ran distracting Masumi by pointing out that everyone can see her underwear), Masumi is relieved that she at least managed to recover her hat, which she thinks is special because it somehow has the same feel as her brother Shuichi Akai's hat.

=== Cooking Show Murder (Manga: [[Volume 80|844-846]], Anime: [[The Treasure Chest Filled with Fruits|727-728]])===
[[File:SeraSmile.jpg|right|thumb|150px|Masumi is smiling and blushing when Conan asks her if they had met each other before.]]
Conan, Ran, Sonoko, Kogoro and Masumi go to a live cooking show. Conan wants to ask something important to Masumi, but a murder gets in his way. While solving the case, Ran realises that Masumi and her might have met each other before, since Ran thinks of waves in the beach each time Masumi gets away. At the end of the case, Conan asks Masumi if they had met each other before. Masumi smiles and says she doesn´t know, but actually she thinks "Of course we have, but I can´t tell you until the time comes..."

===Adultery Investigation (Manga: [[Volume 81|856-858]], Anime: [[Bathroom Where Ran Collapsed As Well|740-741]] )===
[[File:SeraCall.png|left|thumb|150px|Masumi is calling her brother on the phone.]]
After being hired by a classmate, Keiko Kitao, Masumi is investigating to see if the boyfriend of Keiko's sister has fully committed to their relationship. However, as the atmosphere is rapidly changed by the murder, Masumi and Conan start to investigate the crime scene. When Conan has finally deduced who the culprit is, he also observes Masumi making a call with someone saying "...Say, my deduction... It's not wrong, is it?". Upon solving the case, Eri states having seen Masumi talking to her brother on the phone.

=== Meeting Makoto (Manga: [[Volume 81|859-861]], Anime: [[The Suspect is Makoto Kyogoku|744-745]])===
[[File:SeraAndMakoto.jpg|right|thumb|200px|Masumi attacks Makoto with her Jeet Kune Do.]]
At a Bowling Center with Conan, Ran, Sonoko and Kogoro, Masumi is introduced to Sonoko's boyfriend Makoto. Shortly before, Makoto mistakes Masumi for a stranger being "overly friendly" with Sonoko and tries to fight her. Masumi explains that she has been taught Jeet Kune Do by her older brother, she also reveals that besides her assumingly dead brother, she also has a second-oldest brother. Furthermore, Masumi explains to Conan that her brother also advises her on cases by phone. After successfully investigating the crime scene with Conan, Masumi steps aside with her smartphone and types in the message "It seems like he's also arrived at the truth... But whether or not our deductions are the same - lately I've been losing confidence in that regard...". When the recipient writes back "Who is he? I'd like an explanation!", Masumi takes a picture with her smartphone. However, the recipient's answer, "If it's him, there's no problem." reveals that he is familiar with Conan. It is heavily implied that it is the same person Conan saw Masumi making a call with in File 857.

===Red Woman Case (Manga: [[Volume 82|872]]-[[Volume 83|875]], Anime: [[The Tragedy of the Red Woman|754-756]])===
Masumi takes a request from her middle brother to consult in his place about a case involving some of his high school classmates who are now 28-29 years old. On the way to a cabin in the woods, Masumi tells Conan and the gang more about her family history and timeline. She reveals that she and her brothers each have different family names for various reasons, one of which is the death of her father. The case takes a dark turn when one of the classmates is found murdered in a bathtub of tomatoes. With the help of the Nagano police, Conan and Masumi manage to solve the case. Later, Masumi asks Conan to find her cellphone in the kitchen by calling it with his. He does so and Conan notices the call background screen is a [[Mary|child who looks like Masumi]] with eye bags similar to those of the [[Akai family]] members. Masumi mentions having a younger sister earlier on (Episode 754), so Conan suspects Masumi was intentionally trying to show him the child for some reason.

===Romance Novelist Murder Case (Manga: [[Volume 83|876]]-[[Volume 83|878]], Anime: [[The Romance Novel with the Unexpected Conclusion|759-760]])===
On the way home from school, Ran and Sonoko decide to visit Masumi's hotel (which is different from the other one she has been staying at earlier). Masumi claims she had a meeting with her supposedly-hard-to-reach [[Akai family's middle brother|middle brother]] planned, so she texts him to reschedule. Conan seems to notice this contradiction. At the hotel, Conan tries to peek in Masumi's bedroom, but Masumi wards him off by embarrassing him. Masumi also asks Conan is she reminds him of someone he met in the past, but Conan draws a blank. A murder interrupts the meeting. While Conan is investigating, he notices the middle-school aged [[Mary|child]] from Masumi's cellphone picture in the gathered crowd. Later, Conan and the gang return to Masumi's room, and Conan hides his glasses earpiece [[microphone]] to spy on the apartment. It is quickly found and destroyed by Masumi and the child after Conan departs with Ran and Sonoko. Masumi asks the child is she is beginning to like him, but the child responds that she is still long way from trusting him. The child asks Masumi to tell Conan she is her little sister from outside the territory if he asks about her. Masumi doesn't mention that she showed Conan the child's picture.
[[File:Masumi and Scotch Flashback EP836 (3).jpg|150px|thumb|right|Masumi remembers meeting a man nicknamed Scotch]]

=== Shogi Tournament (Manga: [[Volume 85|899-902]], Anime: [[Taiko Meijin's Match of Love|785-786]]) ===

=== Poolside Case (Manga: [[Volume 85|903]]-[[Volume 86|905]], Anime: [[The Mystery Sinking in the Midsummer Pool|787-788]]) ===

=== Ran & Shinichi - First Contact (Manga: [[Volume 87#Ran & Shinichi - First Contact|921-924]], Anime: [[Memories from Sakura Class|853-854]]) ===

=== A Killer in Ramen Ogura (Manga: [[Volume 88#A Killer in Ramen Ogura|928-930]], Anime: [[Ramen So Good, It's to Die For 2|827-828]]) ===

=== Girls Band Murder Case (Manga: [[Volume 88#Girls Band Murder Case|936-938]], Anime:[[The Unfriendly Girls Band|836-837]]) ===
Four years ago, Masumi was taught a few notes on the base guitar by a friend of her brother, [[Shuichi Akai|Shuichi]]. The friend was referred to as "[[Scotch]]" by another person who Masumi thinks looks like [[Rei Furuya|Rei]].

=== Soul Detective Murder Case (Manga: [[volume 90#Soul Detective Murder Case|951-953]], Anime: TBA) ===

=== Swimsuit Festival Murder Case (Manga: [[Volume_91#Swimsuit_Festival|969]]-[[Volume_92#Swimsuit_Festival|971]], Anime:TBA) ===
Masumi intentionally puts on a bathing suit similar to the one that she had worn in the past to try to jog Conan's memory of where they met. A case occurs, which involved the method of counting fingers in different countries. Masumi seems to count the same way that is used in the UK, but seems to think that it is the way it is done in the US. As Conan corrects her, she seems confused. Conan thinks back on all of the times that Masumi has done things that seem to imply that she was in the UK rather than the US and he finally remembers the events of 10 years ago by repeating イギリス (Igirisu / Britain) in is head.
{{clear}}

=== A Chance Meeting at the Beach (Manga: [[Volume_92#A_Chance_Meeting_at_the_Beach|972-974]], Anime:TBA) ===

== Non-Canon Plot Overview ==

=== Movie 18: [[Dimensional Sniper]] ===
Sera appeared in this movie as an investigator of the person who had been shot in the Bell Tower. She and Conan helped in chasing the culprit and afterwards was shot by the culprit after saving Conan.

== Plot Exposition ==
=== Hints that Masumi was Shuichi Akai's sister ===
Masumi was revealed to be Shuichi Akai's sister on the Bell Tree Express after a confrontation with [[Scar Akai]]<ref name=821p16>Manga [[Volume 78]], File 4 (821), pg 16: "Mystery Train (Junction)"</ref> and while sleeptalking.<ref name=823p4>Manga [[Volume 78]], File 6 (823), pg 4: "Mystery Train (Releasing Smoke)"</ref>
[[File:Sera_and_Shuuichi.png|thumb|right|300px|Masumi and [[Shuichi Akai]].]]
* Masumi has bags under her eyes identical to Shuichi Akai's.
* Masumi Sera's name is also incredibly similar to Mobile Suit Gundam character [http://gundam.wikia.com/wiki/Sayla_Mass Sayla Mass] ({{lang|ja|セイラ・マス}}, ''Seira Masu''). [[Shuichi Akai#Name origin|Shuichi's name is derived]] from Sayla Mass's older brother's name, Char Aznable.
* Conan said he has a feeling he had met her before. "''Somehow I feel like we've met somewhere before, it might be that person resembles someone I know, that's why the feeling that we've met before is on my mind...''"<ref>Manga Chapter 771: Let's Hear Your Brilliant Deduction! p.11</ref>
* [[Andre Camel]] and most likely [[James Black]] seem to recognize her from somewhere. On another interesting note, James was the first to recognize that Masumi was a girl. Everyone else thought that she was a guy when they first saw her. Since James was Shuichi's boss, he would most likely know that Shuichi has a younger sister and what she would look like.
* Masumi lived in Japan until three years ago when her family moved to America. This matches with the time when Shuichi was infiltrating the Black Organization. The family's move to America could be the FBI's attempt to protect them should something go wrong with Shuichi's mission.
* In Chapter 801, Masumi chased after [[Scar Akai]] who appeared while she was walking with Ran in front of the Mouri Detective Agency. Although, Scar Akai hid before she could find him, she told Ran that she had just seen "someone she knew".
* In Chapter 859, Masumi, when being asked who taught her Jeet Kune Do, answers that her older brother did. Consequently, Conan asks Sera: "But, didn't you say your older brother was dead?" This leads to Masumi remarking "Yeah... That's what I heard." also further supporting the theory that Masumi is in Japan to investigate her brother's death.

=== Hints that Masumi was not Bourbon ===
* In Chapter 801, Masumi chased after [[Scar Akai]] who appeared while she was walking with Ran in front of the Mouri Detective Agency. Although, Scar Akai hid before she could find him, she told Ran that she had just seen "someone she knew". She then thinks there is "no way it was possible" regarding the man she saw, which would make sense if she thought Shuichi was dead. This implied she wasn't Bourbon, since Bourbon believes he is the only one who can kill Shuichi, implying that Gin might have failed to do so. Hence Bourbon wouldn't think that it was impossible to meet Shuichi again in the street.

==Relationships analysis==

===Friends & Family ===

==== Shuichi Akai ====
[[Shuichi Akai]] is Masumi's older brother. She didn't get to meet him until she was six-seven years old, because Shuichi went to study abroad before Masumi was born. At first meeting she was very shy, but she did make some pranks in an attempt to make him smile. Masumi refers to Shuichi as "Shu-nii", implying that they were close. Masumi seems to miss him after his supposed death. In the Blush Mermaid Heist, Masumi is shown to be fond of her fedora as she believes it has the same "feel" as Shuichi's old hats. Shuichi sent Masumi Jeet-Kune-Do training tapes while she was in elementary school. She watched these so many times while practicing that she wore them out.<ref name="876p2">Manga [[Volume 83]], File 4 (876), pg 2: "Romance Novelist"</ref> She describes her eldest brother as ''strong'' in contrast to her second - oldest brother.<ref name="859p6-7">Manga [[Volume 81]], File 9 (859): pgs 6-7: "Jeet Kune Do vs. Karate"</ref>

==== Conan Edogawa ====
[[File:EP671-674_25.png|thumb|right|Masumi hugs Conan after rescuing him in [[Detectives' Nocturne]].]]
Masumi is interested in [[Conan Edogawa|Conan]]'s abilities as a detective and has been gathering information on him and his friends. She appears to be certain that Conan is Shinichi Kudo. Despite her initial suspicious presentation, Conan felt like she wasn't a bad person and so didn't mistrust her. Conan at several points questions her if they've met before, but she denies this, once secretly thinking, "Now's not the time". The period in which such an encounter could have taken place is initially hinted to be somewhere before the three-year span of Masumi's sojourn in the United States, when she was in her preteen years.<ref name="Mang83">Manga [[Volume 83]], File 2 (874), pg 7-8: "Red Past"</ref><ref name="Mang86">Manga [[Volume 86]], File 1 (905): "The Truth Rises to the Surface"</ref>

It is later shown that she had met Conan/Shinichi ten years ago, when the Akai family had gathered on an undisclosed beach in Japan prior to Shuichi Akai joining the FBI. By chance, Shinichi and [[Ran Mouri|Ran]] had also vacationed there, and they all ended up as witnesses and investigators in a gone-awry flight attempt from a robbery. When Shinichi managed to make Shuichi laugh (something Masumi had miserably failed to achieve) with his intelligence, observation skills and some unintended jokes, Masumi, in her admiration for Shinichi, began to call him "wizard". It is quite possible that this meeting inspired Masumi to become a detective herself.<ref name="Mang92">Manga [[Volume 92]], File 2-4 (972-974): "A Chance Meeting at the Beach"</ref>

If Masumi really lived in England, instead of America, then it's possible that she saw the tennis match from the London case on TV and recognized Conan as Shinichi based on his proclamation as 'Holmes' apprentice'.

On several occasions, such as the dramatic conclusion of the [[Volume 76#Online Client|Online Client Case]], Masumi has displayed an intensely affectionate air towards Conan which somewhat transcends a mere "big sister" relationship.<ref>Manga Chapter 800: ''Online Client Case'' - "When Objects Collide"; Anime Episode 674: ''[[Detectives' Nocturne]]'' - "Bourbon"</ref> In fact, it is hinted during the [[Volume 83#Romance Novelist Murder Case|Romance Novelist murder]] and in the movie ''[[Dimensional Sniper]]'' that she may actually be entertaining a crush on Shinichi/Conan and hopes of initiating a closer relationship with him. However, the actual level of her feelings for him is yet to be publicly revealed.

==== Ai Haibara ====
Masumi has been interested in meeting [[Ai Haibara]] for yet unrevealed reasons and has been secretly gathering information on her. She also seemed to recognize [[Shiho Miyano]] in the video of her rescuing the [[Detective Boys]]. Haibara in turn feels uneasy around Masumi, especially in close contact situations though arguably it could also be due to Scar Akai's presence near Masumi.

==== Ran Mouri ====
[[File:Ran and Sera and Wave.jpg|thumb|left|180px|Ran hears sounds of rippling waves when she sees Masumi hurried away]]
Since enrolling at Teitan High, Masumi and [[Ran Mouri|Ran]] have become friends and often walk home from school together. Masumi has also declared Ran as "her type" when they first met as a sign of liking, though this ultimately led Sonoko, Conan and Ran herself to mistake Masumi for a boy.

At one point, Ran recalls having met Masumi before in the past, hearing the sound of "rippling waves" when the she sees the latter leaving, "as if some sort of magic were at work".<ref name="Mang86"></ref> It is revealed in a later story that she and Masumi had actually met 10 years before, when they were both still children, on a beach, where by happenstance she, Shinichi and the Akai family inadvertently became embroiled in the aftermath of a crime (see '''Conan Edogawa''', above).<ref name="Mang92"></ref>

==== Sonoko Suzuki ====
Since enrolling at Teitan High, Masumi and [[Sonoko Suzuki|Sonoko]] have become friends and often walk home from school together, with Sonoko describing Masumi as a popular girl who is "cheery, sociable, boyish and cute" and on top of that, a "Jeet Kune Do using detective", though she also teasingly remarks that the only thing "against Sera" is her flat chest.

==== Akai family's middle brother ====
Masumi appears to have a good relationship with her [[Akai family's middle brother|second-older brother]] and often consults him regarding information or deductions about the cases she faced, and also has a high regard of her brother's intellect, even considering the already sharp Shuichi as "strong" in contrast to her second older-brother.

==== Tsutomi Akai ====
Masumi's father died before she was born, so she never knew him. But he refer to him as 'Papa'

=== Black Organization ===

==== Rei Furuya ====
Rei first saw Masumi in Detectives Nocturne case and seemed to recognise her. They formally met in chapter 936 (Girls Band) at [[Café Poirot]]. Masumi felt like having met him and even asked him directly about that, but Rei said that was the first time they met. When Masumi talked about a friend of her brother who taught her play the guitar, Rei also seemed to know about that incident. In Masumi's flashback of that friend, a man who looked very much like Rei appeared, and Masumi once again wondered about it, to which Amuro replied that she took the wrong person.

==Speculation==
[[File:Sera Knowing Conan's Name.png‎|thumb|right|170px|Masumi mentioning Conan's name.]]
=== Masumi met Shinichi and Ran when she was younger and knows Conan is Shinichi ===
*Masumi knew [[Conan Edogawa|Conan]] and [[Ran Mouri|Ran]]'s identities before they introduced themselves. She also knew that Conan is a detective.<ref> [[Volume 73]], File 6 (768)</ref>
*Masumi seems to know that Conan is the brains behind Sleeping Kogoro. Conan seems to think that he may have met Masumi before or that she resembles someone that he knows. He believes that she got the deduction of a case wrong just so that he would reveal himself. <ref> [[Volume 73]], File 9 (771)</ref>
*Conan realizes he met Masumi before because he finds her snaggletoothed smile familiar,<ref name=845p16>Manga [[Volume 80]], File 6 (845), pg 16: "Our Territory"</ref>
*Masumi admits that she has met Conan before, but she can´t tell him until "the time" comes.<ref name=846p16>Manga [[Volume 80]], File 7 (846), pg 16: "The Magic Lock"</ref>
*Ran has met Masumi as well because Masumi's figure as she runs away reminds her of "sounds of rippling waves, as if some sort of magic were at work."<ref name=846p4>Manga [[Volume 80]], File 7 (846), pg 4: "The Magic Lock"</ref>
*Masumi, asks Conan if he once met a girl "a long time ago and could never forget [her]"<ref name=876p11>Manga [[Volume 83]], File 4 (876), pg 11: "The Romance Novelist"</ref> and gets annoyed when he says he can't recall someone like that.
*Ran has a flashback to when she saw a younger Masumi, who is wearing a bathing suit, say, "You are a wizard, right?". Ran also feels that she has met [[Mary]].<ref> Manga [[Volume 86]], File 1 (905)</ref>
*The meeting occurred 10 years ago, as mentioned by Mary.<ref> Manga [[Volume 90]], File 5 (953)</ref>
*Masumi puts on a swimsuit similar to the one in Ran's flashback in order to jog Conan's memory, which results in him remembering her in that bathing suit as well, along as three other people, assumed to be her relatives. <ref> Manga [[Volume 91]], File 11 (969)</ref>

In Chapter 771, it is revealed that she also knows Professor Agasa, although she calls him "Professor what's his name". Although this could be explained away as her talking to Conan off screen and her just not remembering Agasa's name.

=== Identity of Masumi's middle brother ===
{{main|Akai family's middle brother}}

=== The Wizard ===
In a PS, [[Akai family's middle brother|Masumi's middle brother]] asks if she "has already met the Wizard?"<ref name=861p15-16>Manga Volume 81, File 11 (861), pg 15-16: "Just like Magic"</ref> Masumi's thought reply is "You could say so..." Later, Masumi "thinks aloud" that her reason for returning to Japan is to meet the Wizard once more.<ref name=874p8>Manga [[Volume 83]], File 2 (874), pg 8: "The red past"</ref> The identity of the Wizard is still unclear.

==== Shinichi Kudo ====
Tellingly, Masumi turns towards Conan when thinking of the answer "You could say so". At this point Masumi seems to know Conan is Shinichi. If Shinichi was nicknamed "The Wizard" by Masumi and/or her brother because of what happened when he and Masumi met in the past, then the response is appropriate since she could only sort of meet with Shinichi, because Shinichi shrunk into Conan. It's possible that the event where Shinichi earned the nickname "The Wizard" was Shinichi and Ran's meeting with Masumi 10 years ago. When trying to remember Masumi, Ran specifically mentions "sounds of rippling waves, as if some sort of magic were at work."<ref name=846p4>Manga [[Volume 80]], File 7 (846), pg 4: "The Magic Lock"</ref> A "magical" incident, if it was Shinichi's doing, might have earned him the nickname. Ran has a flashback of a young Masumi saying "You are a wizard, right?".<ref> Manga [[Volume 86]], File 1 (905)</ref> Conan seems to have remembered meeting Masumi 10 years ago and is shown as a young Shinichi standing in front of a large wave.<ref> Manga [[Volume 92]], File 2 (971)</ref>

==== Someone else ====
At this point it is unlikely that the Wizard is anyone else. There is evidence that Masumi nicknamed the person who she calls Wizard, at a point in the past while Ran was nearby. If Ran was nearby, then this would have to have happened when they first met 10 years ago, meaning that the person must be someone who existed back then. The topic of the Wizard came up during a text conversation about Conan between Masumi and her middle brother, and her response to if she had met the Wizard again was "You could say so", which is more than likely implying that she is referring to Conan, and therefore Shinichi.

[[File:Akai's picture 338.PNG|thumb|right|The picture of the Detective Boys the mystery assistants captured]]
===Masumi learned about Haibara from Shuichi's picture===
Masumi initially had an interest in Haibara. This is strange because Haibara didn't exist prior to Shiho shrinking. The knowledge of Shiho should have been secret to her as well, because Shuichi Akai's infiltration of the Black Organization was a secret. If Masumi doesn't even know the details of her brother's death, why should she know about Shiho? Masumi may recognize Haibara from pictures of Conan and Haibara that Shuichi took back during the Vermouth arc. It is standard procedure in the US to send the personal belongings of the dead back to their families. If Shuichi mixed these pictures in with his own things when he took them out of his truck before meeting with Kir, it's possible they were overlooked when the FBI sent Shuichi 's things to his family. If Masumi was interested in finding out how and why Shuichi died, she would begin by researching the people in those pictures and those connected with them in hopes of finding clues.
{{clear}}


==Character popularity==
*In honor of the release of the 800th manga chapter, Shonen Sunday held a popularity poll/contest containing 91 Detective Conan characters to choose from. Masumi placed 9th overall with 292 votes.<ref>{{cite web|url=http://forums.dctp.ws/viewtopic.php?f=4&t=8024|title=Shonen magazine detective conan official poll results published [magazine pic]|date=2012-02-28|publisher=eva|accessdate=2012-02-29}}</ref>

*Masumi ranked 10th in the Digest Book 50+ poll "Best Detective Conan characters", with 107 votes.

*Masumi ranked 5th in the Digest Book 60+ poll "Cutest Detective Conan characters", with 135 votes.

*Masumi ranked 10th in the Digest Book 70+ poll "Characters you want to go on a date with", with 106 votes.

*Masumi ranked 11th in the Digest Book 80+ poll "Character you want to marry", with 281 votes.

==Name origin==
{{Nihongo|Masumi Sera's|世良・真純|Sera Masumi}} name comes from the [[wikipedia:Mobile Suit Gundam|Mobile Suit Gundam]] character {{Nihongo|[[wikipedia:Sayla Mass|Sayla Mass]]|セイラ・マス|Seira Masu}}.<ref>[[Sherry's soliloquy|Sherry's soliloquy (2012-06-17)]], Gosho was referring to the revelation that Masumi is Shuichi's sister (Manga File 821): {{lang|ja|やっぱりアルテイシアだったのね・・・}} (So it was '''Artesia'''…). Note that "Artesia" is another name of '''Sayla Mass'''.</ref> The kanji for Masumi's surname mean 'good world'. The kanji for her first name, Masumi, mean 'true' and either 'pure' or 'net.'

==Quotes==
{{cquote|Deletion. For data at least ... is an easy task to accomplish.|Masumi, on deleting a picture of Haibara from her computer, File 777 pg 16}}

{{cquote|I guess I'm a bad kid after all...|Masumi, while crying, File 814 pg 16}}

==Trivia==
*Masumi is based on [[Natsuki Koshimizu]], a tomboy detective girl turned criminal who made her first appearance in the [[Volume 54#Detective Koshien Case|''Detective Koshien Case'']]. Since Natsuki had proven highly popular, but Aoyama couldn't recycle her as a protagonist, the character of Masumi was created instead.<ref>''Shonen Sunday'' #33</ref>
*When she was young she liked to read the "[[Night Baron]]" series, so she is fan of [[Yusaku Kudo]].
*Her catchphrase, "Case Closed" (said in English), is likely a reference to the English-language name of Detective Conan.
*Masumi owns an [[Vehicles_in_Detective_Conan#Sera's Yamaha_Artesia_XT400|Artesia XT400]].
*In File 859, Masumi reveals that she has a second-older brother and that her oldest brother taught her Jeet-Kune-Do.
*Masumi speaks Queen's English.<ref>[[:File:Postcard2015 1.jpg]]</ref>

==In other languages==
{{BeginTable CharLang}}
{{OtherLangItem|flag=Japan|Japanese|真純 Masumi|世良 Sera}}
{{OtherLangItem|flag=Arab League|Arabic|ماسومي Māsūmi|سيرا Sēra}}
{{OtherLangItem|flag=France|French|Masumi|Sera}}
{{OtherLangItem|flag=Mexico|American Spanish|Masumi|Sera}}
{{OtherLangItem|flag=Brazil|Brazilian Portuguese|Masumi|Sera}}
{{CharLangItem|flag=Italy|Italian|Masumi|Sera}}
{{CharLangItem|flag=North Korea|flag2=South Korea|Korean|세라 Sera|양 Yang}}
{{OtherLangItem|flag=Thailand|Thai|มาสึมิ Mās̄ụ-mi|เซระ Sera}}
{{EndTable}}

==See also==
* [[Characters]]
* [[Akai family]]

==References==
<references />

{{DEFAULTSORT:Sera Masumi}}
[[Category:Characters]]
[[Category:Female characters]]
[[Category:Detectives]]
[[Category:High school detectives]]
[[Category:High school students]]
[[Category:Martial artists]]
[[Category:Characters who know Conan's identity]]
[[Category:Characters named after Mobile Suit Gundam characters]]
[[Category:This page has images with hideous anime aggregate site watermarks]]
[[de:Masumi Sera]]
{{Characters}}

Masumi Sera

2017-03-20T18:48:50Z

8627937131f701a286774c43a25313a3:

{{FeaturedArticle|March 23, 2011}}

{{SpoilerWarningArticle|This article contains significant '''[[Glossary#Spoiler|spoilers]]''' about major events concerning this person. It is likely you will be spoiled if you have not read all the manga released to date. To find out what pages will be safe for you to read, please consult our [[Glossary#Spoiler|wiki spoiler policy]].}}

{{InfoBox Char
| name = Masumi Sera
| japanese-name = {{lang|ja|世良真純}} (Sera Masumi)
| english-name =
| image = Masumi_Sera_Profile.jpg
| age = 16-17? 
| gender = Female
| date-of-birth =
| occupation = Teitan High School Student Detective
| relatives = [[Tsutomu Akai]] (father, deceased) [[Mary Sera]] (mother) [[Shuichi Akai]] (older brother) [[Shukichi Haneda]] (second-older brother)
| nicknames =
| first-appearance = Manga: [[Volume 73|File 768]] Anime: [[Deduction Showdown at the Haunted Hotel|Episode 646]]
| appearances = {{:Masumi Sera Appearances}}
| keyhole = [[Volume 73]]
| japanese-voice = [[Noriko Hidaka]]<ref>{{cite web|url=http://combination.jp/blog/2012/02/post-383.html|date=2012-02-01|accessdate=2012-02-01|title=新しいお仕事 | Blog | コンビネーション|publisher=combination Co.Ltd.|author=Noriko Hidaka}}</ref>
| cases-solved = 5
| footnotes =
}}
'''{{nihongo|Masumi Sera|世良真純|Sera Masumi}}''' is a high school detective in the manga and anime franchise ''[[Detective Conan]]''. She is the younger sister of [[Federal Bureau of Investigation|FBI]] agent [[Shuichi Akai]] and a practitioner of the martial art [[wikipedia:Jeet Kune Do|Jeet Kune Do]].

== Background ==
Masumi Sera is a high school detective and the younger sister of [[Federal Bureau of Investigation|FBI]] agent [[Shuichi Akai]]. She is the only daughter of [[Tsutomu Akai]] and [[Mary]]. 17 years ago, her father, before he disappeared, instructed his family to hide in Japan, where Masumi later was born. Her oldest brother had prior to her birth left Japan to study in America, so they first got to meet each other when Masumi was six-seven years old. Although she grew up in Japan during her elementary school years, she moved abroad three years ago with her mother, presumably due to Shuichi infiltrating the [[Black Organization]]. She has recently returned to Japan for some unknown reason. After meeting Conan, Ran, and Sonoko during a case, she transfers to [[Setting#Teitan High School (帝丹高校)|Ran's high school class]]. Masumi is skilled at [[Wikipedia:Jeet Kune Do|Jeet Kune Do]], a hobby encouraged by her brother Shuichi who mailed her instruction videos while in elementary school. She can fight on the same level as [[Ran Mouri|Ran]]. She seems to know that Conan is Shinichi and implies that she met Ran and Shinichi sometime in their past. Currently she is living with [[Mary]], whom she calls "Mama", at a hotel. She claims that she is provided for by a rich friend of her late father, but it hasn't been revealed who it is. Every time they encounter the possibility of information on Mary getting out, they end up moving to a new hotel under Mary's order. While Masumi is eager to seek help from Conan, Mary is skeptical of him.
She also has another older brother, and the three siblings has different last names. Sera is supposedly her mother's maiden name.

==Personality==
[[File:691-15.png|thumb|Masumi beats a gangster in [[Yusaku Kudo's Cold Case]]]]

Masumi has a cheery, sociable, boyish personality<ref>Manga Volume 73, File 9, Page 3, "Let's hear your brilliant deduction!"</ref> and is well liked by her classmates at Teitan High. On their first meeting, Masumi fails to correct Sonoko's mistaken impression that she is a man and even makes it worse by declaring that Ran is "[her] type".<ref name=pronouns>The Japanese pronoun used is gender neutral and can refer to either males or females.</ref> Her rather boyish appearance - especially in relation with her flat chest - is a bit of a touchy subject to Masumi, who claims that her mother's bust size is rather well developed and keeps expressing her hope that someday her own chest size will similarly change for her.

Masumi is quite quick-minded, coming up with clever plans and adapting them to sudden changes rapidly. Masumi seems to be prone to dramatics like most detectives are, but perhaps to a lesser degree than [[Shinichi]] or [[Heiji]] as she bluntly says who the criminal is without preamble. On the other hand, Masumi is tough to the point that she is willing to risk all to achieve a successful conclusion of a case. In one instance, she purposefully lured a hostage-taker into a sniper's sight with a smile, hoping he would be shot without showing any apprehension about his possible demise.

Although she has crime scene experience<ref name=769p3>Manga Volume 73, File 7, pg 3: "A Detective Just Like You, Little Boy"</ref>, Masumi seems to be less skilled as a detective than Shinichi or Heiji, apparently missing a critical clue that was necessary to understand how the murderer's setup worked, although Conan opines that Masumi purposely made an error in order to test him. In some degree, she seems to like rivalry or contests to see who is the winner.

Sera's catchphrase upon the conclusion of a case is "case closed".

Sera shows a protective and caring side towards Conan, as seen in the Detectives Nocturne and in the beginning of the Red Woman case when she helps Conan up after falling, as well as having it made clear in the Haunted Hotel case that she was also clearly investigating Conan before they first met, as she knew he was a detective. Its likely to believe that them being on the same bus was not an accident, which could even lead to be argued that she somehow hinted to them about the cake buffet so they would be on the same bus as her. It is safe to assume though she was, and possibly still is, investigating Conan.

Sera's way of referring to her parents as 'Mama' and 'Papa' indicates a privileges background.

== Appearance ==
[[File:Sera_transfers.png‎|thumb|Masumi transfers to Teitan High School]]

At first, she wears a grey fedora that used to belong to Shuichi Akai and a dark jacket which gives her an androgynous appearance. When she transfers to Teitan High, she gets rid of her fedora and wears female clothing. Her hair is dark, wavy, and short; it doesn't even touch her shoulders. Even then, she is rather tomboyish; Genta mistakes her for a man, and Sonoko comments she has a petite figure. Later, Genta, Mitsuhiko and Hattori comment that her bosoms are rather small. Masumi also has an uneven tooth that shows when she smiles.

Masumi and her brother Shuichi presumably more closely resemble their mother than their father.
{{clearleft}}

==Appellations==
<tabs jsId="nicknames">
<tab title="Protagonists">
{{appellations/head|Masumi}}
{{appellations|Conan Edogawa|Sera-san Sera-no-nēchan Sera Sera Masumi<ref name="file930">[[Volume 88#A Killer in Ramen Ogura|File 930 (Volume 88)]]</ref> [[Shuichi Akai|Akai-san]]'s younger sister (''Akai-san no imōto'')|Conan-kun Edogawa Conan-kun<ref name="file771">[[volume 73#Bomber's Request|File 771 (Volume 73)]]</ref> Boy (''Bōya''; first time) Wizard (''Mahō-tsukai'')}}

{{appellations|Shinichi Kudo|Sera Masumi (movie introdcution)<ref name="m18">Movie 18: ''[[Dimensional Sniper]]''</ref>|Kudo-kun Shinichi-kun Kudo Shinichi-kun<ref name="ep690">[[Yusaku Kudo's Cold Case|Episode 690]]</ref>| Kudo Shinichi}}

{{appellations|Ran Mouri|Sera-san Sera Masumi-chan<ref>File 778</ref> Sera-chan|Ran-chan Ran-kun}}

{{appellations|Kogoro Mouri|Tomboy-ish Girl|Kogoro-san Poiro-san ([[Hercule Poirot|'''Poiro'''t]] + Kogo'''ro''')<ref>[[Volume 78#Mystery Train|File 820 (Volume 78)]]</ref> Sleeping Kogoro-san (''Nemuri no Kogoro-san'')<ref name="file771" />}}
|}
</tab>
<tab title="Friends & relatives">
{{appellations/head|Masumi}}
{{appellations|Tsutomu Akai|-|Papa}}

{{appellations|Mary|Masumi<ref name="file953">[[volume 90#Soul Detective Murder Case|File 953: As If Connecting with a Demon in the Darkness (Volume 90)]]</ref>|Mama<ref name="file953" /> The little sister from outside the domain (''ryōiki-gai no imōto'')}}

{{appellations|Shuichi Akai|Masumi|Shu-nii Oniichan<ref name="file972" /> Aniki<ref name="file936">[[Volume 88#Girls Band Murder Case|File 936]]</ref> Akai Shuichi<ref name="file938">[[volume 89#Girls Band Murder Case|File 938: The Crime in the Blind Spot (Volume 89)]]</ref> Ani<ref name="file859">[[volume 81#Bumper Brawn|File 859: Jeet Kune Do vs. Karate (Volume 81)]]</ref>}}

{{appellations|Subaru Okiya|Sera Masumi-san<ref name="file954">[[Volume 90#Bourbon's Mission|File 954: Sanction of the Betrayal (Volume 90)]]</ref> Sera-san<ref name="file954" />|Subaru}}

{{appellations|Shukichi Haneda|Masumi<ref name="file972">[[volume 92#A Chance Meeting at the Beach|File 972 (Volume 92)]]</ref>|Kichi-nii ([[Gosho Aoyama|Gosho]]'s thought)<ref>[[:File:AChint8-06-2014_4.JPG]] (Sera-chan calls him Kichi-nii)</ref> Kichi-niichan<ref name="file972" /> Aniki Chukichi (talking to [[Yumi Miyamoto|Yumi]])<ref>[[Volume 88#A Killer in Ramen Ogura|File 929 (Volume 88)]]</ref>}}

{{appellations|Sonoko Suzuki|Sera-san Sensei (once) Sera-chan Female High-School Detective (''JK Tantei'')<ref name="file938" /> Sera Masumi-san<ref name="file859" />|Sonoko-chan Sonoko-kun}}

{{appellations|Heiji Hattori|Female detective (''onna-tantei'')|Hattori-kun}}

{{appellations|Kazuha Toyama|-|The girl with the ponytail}}

{{appellations|Katsumasa Ogura|Mari-chan<ref name="file930" />|Taisho<ref name="file930" />}}
|}
</tab>
<tab title="Law enforcement">
{{appellations/head|Masumi}}
{{appellations|Juzo Megure|Female High-School Detective (''Jōshi-Kōsei Tantei'')|Inspector-san (''Keibu-san'')}}

{{appellations|Wataru Takagi|Sera-kun|Detective Takagi (''Takagi-keiji'')<ref>[[Volume 86#Poolside Case|File 905 (Volume 86)]]</ref>}}

{{appellations|Andre Camel|-|"FBI Guy"}}

{{appellations|Ginzo Nakamori|Boy (''Bōzu'')<ref name="file828">[[Volume 78#The Blush Mermaid|File 828 (Volume 78)]]</ref>|Inspector-san (''Keibu-san'')<ref name="file828" /> Inspector (''Keibu'')<ref name="file828"/>}}

{{appellations|Rei Furuya|-|Amuro-san<ref name="file937">[[Volume 88#Girls Band Murder Case|File 937]]</ref>}}

{{appellations|Scotch|-|Scotch<ref name="file937" /> [[Shuichi Akai|My brother]]'s friend (''Aniki no yūjin'')<ref name="file936" /> The friend (''sono yūjin'')<ref name="file936" />}}

{{appellations|Jugo Yokomizo|Young girl (''wakai no'')<ref name="file858">[[volume 81#Steamy Relations|File 858: A Problematic Deduction (Volume 81)]]</ref>|Inspector-san (''Keibu-san'')<ref name="file858" />}}
|}
</tab>
<tab title="Detective Boys">
{{appellations/head|Masumi}}
{{appellations|Ai Haibara|Sera Masumi<ref name="m18" />|Haibara Ai}}

{{appellations|Ayumi Yoshida|Onēsan<ref name="m18" />}}

{{appellations|Hiroshi Agasa|-|Professor Agasa (''Agasa-hakase'')}}
|}
</tab>
<tab title="Others">
{{appellations/head|Masumi}}
{{appellations|Yusaku Kudo|-|Kudo Yusaku<ref name="ep690" />}}

{{appellations|Yukiko Kudo|Sera<ref>[[Volume 78]], File 6</ref>|-}}

{{appellations|Scar Akai|Masumi<ref name="MT">[[The Jet-Black Mystery Train]]</ref>|Shu-nii<ref name="MT" /> Acquaintance (''shiriai'')}}

{{appellations|Makoto Kyogoku|-|Master of Karate (''Karate no Tatsujin'')}}

{{appellations|Kohji Haneda|-|Haneda<ref>[[volume 90#Soul Detective Murder Case|File 952: In the Suspicious Next Room (Volume 90)]]</ref> Haneda Kohji<ref name="file953" />}}

{{appellations|Asaka|-|Asaka<ref name="file953" />|file=Asaka manga.jpg}}
|}
</tab>
</tabs>

==Plot overview==
=== Masumi's Introduction (Manga: [[Volume 73#Jeet Kune Do|768 - 770]], Anime: [[Deduction Showdown at the Haunted Hotel|646 - 647)]] ===
[[File:Sera_Kick.png|thumb|right|Masumi defends herself from Ran.]]
Masumi first met [[Sonoko Suzuki|Sonoko]], [[Ran Mouri|Ran]], and [[Conan Edogawa|Conan]] on a bus after she was mistaken for a [[Wikipedia:Groping|groper]]. After Sonoko declared Masumi was the groper, Masumi and Ran got into a fight, with Masumi's Jeet Kune Do holding even against Ran's karate. Conan and Masumi cleared up the misunderstanding by pointing out the real groper. Sonoko then mistook Masumi for a boy, an impression which wasn't helped by Masumi declaring that Ran was "his type".<ref name=pronouns/> Masumi and Ran both discovered they were heading to the same hotel, about which Conan is less than pleased.

Masumi finds out the hotel she is staying at doesn't have a room available and complains at the front desk. A man then falls into the parking lot and dies. Conan runs to the source of screaming while Masumi told the guard to watch the elevators before running to the roof. She immediately declares the crime to be a murder, giving her reasoning. She then reveals her name, Masumi, that she is a detective, and knows Conan is a detective as well. She also revealed before she knew Conan's name despite it not being mentioned in front of her, revealing that Masumi has been investigating Conan for awhile now.

[[Juzo Megure|Inspector Megure]] is not pleased to have another high school detective underfoot but lets Masumi and Conan investigate regardless. After listening to the suspect testimony, police observations, and examining the crime scene, Masumi announces that she has solved the case.

However, Masumi's deduction leaves out a critical detail; Conan is therefore forced to use Shinichi's phone to call his own, give Inspector Megure Conan's phone, and speak through Shinichi's as Shinichi using the voice-changer bow tie. Shinichi figures out the detail that had Masumi stumped, although a look she gives Conan as he runs off suggests her omission was possibly intentional, and once during the phone conversation she tries to trick Shinichi into admitting that he is physically present at the crime scene instead of being explained the details by Conan and Megure.

The following day, Masumi transfers to Teitan High School, surprising both Ran and Sonoko. She was rather popular at school surrounded by students asking her questions about herself.

===Kogoro Detective Agency Hostage Crisis (Manga: [[Volume 73#Bomber's Request|771]]-[[Volume 74#Bomber's Request|774]], Anime: [[Hostage Situation at the Mouri Detective Agency|648 - 650]])===

====Let's hear your brilliant deduction! (771)====
According to Sonoko, Masumi has become very popular at Teitan high for being "cheery, sociable, boyish, and cute...and on top of that, she is a jeet kun do-using female detective!"<ref>Manga Volume 73, File 9, Page 3, "Let's hear your brilliant deduction!"</ref> One classmate compares her to [[Shinichi Kudo]] who has been taking a break from school. Masumi tells inquiring classmates that she has been staying in America with her parents since three years ago, but "rebelled" because she would rather live in her Japan where she was born and raised. She sneaks up behind Sonoko and Ran after school because she wanted to speak to Conan at the Mouri Detective Agency. At the agency, Masumi is unhappy to hear that Conan and the rest of Detective Boys are staying at Agasa's house and will be camping the following day. She settles for asking Kogoro if Conan is always at his side when he solves cases, hinting that she suspects Conan is the real brains behind "Sleeping Kogoro".

[[File:Sera_slide_kick.png|thumb|left|Masumi sweeps out the Hostage Taker's legs]]
Just as Masumi is about to walk out the door, three female mystery writers and a man enter the agency. After a moment of confusion, the man suddenly fires a gun into the roof and takes the detective agency hostage. His demands are that Kogoro figure out which of the three writers killed his sister at a ryokan one month ago. The quick thinking Masumi sidles up to Ran and tells her to go for the man's gun after she takes his legs out. Sera's leg sweep sends the man to the floor, and Ran removes the gun from the man's hand with a kick; however, Masumi leaps back when the man reveals he has bombs strapped around his chest and will detonate them if they try to stop him.

Meanwhile at Agasa's, Haibara is angry that Conan used Shinichi's voice to solve a case around the suspicious Masumi. Conan's response is that Masumi is familiar somehow, like they have met before or she looks like someone, and Conan feels she isn't an enemy. Genta and Mitsuhiko told Conan they saw a high school student walking home with Ran, so the jealous Conan calls Ran's cellphone to hear about it from her.

The hostage taker man orders Ran to answer her phone, but Masumi snatches the phone away and says hello to Conan (who is shocked that Masumi is with Ran). Masumi then tricks the hostage taker and keeps the line connected so Conan can listen in by closing Ran's [[Yaiba#Characters|Sea Cucumber Man]] cellphone strap in between the screen and keypad of the the flip phone.

====Nickname Rules (772)====
Masumi asks a few insightful questions about the case; however the hostage taker man discovers Ran's phone is still connected. Under gunpoint, Masumi steps in front of Ran and takes the blame, but Conan, using Shinichi's voice, says he ordered Ran to do it. Masumi is mystified by why Shinichi is now on Conan's phone. Masumi meanwhile spots a glint of light across from the detective agency and declares that the case will come to an end without Shinichi's help.

====Possible Sniping (773)====
[[File:Sera773.png|thumb|right|Masumi surprised by Ran's attitude.]]
Masumi explains to Ran that she secretly kept the call to Conan connected so he could call the police and research into the case. While Masumi is still surprised that Shinichi was on the other end of the line instead of Conan, she had initially hoped that Shinichi would somehow be able to talk down the would-be-murderer. She suspects that Shinichi has already figured which one of the suspects is the murderer in the ryokan case, but Shinichi is unable to reveal the truth because the hostage taker would then kill the named culprit and then himself. Sera's plan changed when she noticed the lights from the police snipers on the building across from Mouri Detective Agency. She explains to Ran in detail the names and functions of the various police divisions responsible for hostage situations, and tells Ran in a roundabout fashion that this situation will end with the hostage taker being killed by the police.

Masumi launches a plan to bring the hostage taker into the snipers' range by telling him he should charge Ran's phone battery. Ran foils Sera's intentions by shutting the curtains, blocking the snipers' shot. To Masumi's utter astonishment, Ran tells her that she doesn't want to see anyone die in front of her and declares that "Shinichi won't allow anyone to die. He absolutely wouldn't!"<ref>Volume 73, File 11, page 13, "Possible Sniping." Shinichi then begins to present his deductions over the phone and Masumi wonders how he will manage to resolve this situation without bloodshed.</ref>

====The book with unturned pages (774)====
Masumi and Ran take the opportunity to disable the hostage taker when he loses his composure and grip on the detonator after Shinichi tricks him into believing his sister committed suicide. Masumi yells for the waiting bomb squad to secure the area. With the hostage taker arrested, Shinichi then reveals the true culprit. Masumi realizes the mistake in her deduction and explains the correct timeline of events before the murder. Sometime soon after the conclusion of the case, Masumi, walking with Ran and Sonoko speculates aloud that there must be some reason Shinichi left Agasa's before Ran could meet him there. She then exclaims that "due to what just happened, she really gets it", that Conan and Shinichi are on very good terms with one another, and that Ran "is tougher than Masumi thought". Conan isn't sure what to make of these last comments.

===Video Site (Manga: [[Volume 74|775-777]], Anime: [[The Professor's Video Site|656-657]])===
[[File:Ai image.png|thumb|Masumi deletes Haibara's image]]

Masumi stops [[Genta Kojima|Genta]] and [[Mitsuhiko Tsuburaya|Mitsuhiko]] outside of [[Hiroshi Agasa|Agasa]]'s house to ask them if they are acquaintances of Professor Agasa. The topic of [[Shinichi]] comes up when she talks to Mitsuhiko and Genta about the prior hostage case. Mitsuhiko mentions that [[Ai Haibara|Haibara]] told them to keep Shinichi's involvement secret. After asking about Haibara, Masumi mentions that she saw Haibara in one of the professor's online videos. Next, Masumi asks who is currently living in the Kudo house because she saw the curtains shift slightly. The Detective Boys tell her that [[Subaru Okiya]] has been staying there since his apartment burnt down. Masumi cryptically comments with a smirk on her face, "And here I thought that someone had just settled in without permission...But it seems I was just getting worked up over nothing..." while looking up at where Subaru is hiding.

At the end of the case, Masumi is in her hotel room deleting various files. One of her deleted files was a still image from Agasa's video blown up to show Haibara reflected in Agasa's glasses. This indicates that she is not only keeping an eye on Conan but also on Haibara.
"Delete... Delete... For data, at least is an easy task to accomplish...", were her words while she was doing it.

===East vs. West Rematch (Manga: [[Volume_74#East_vs._West|778-780]], Anime: [[Conan vs. Heiji, Deduction Battle Between the Detectives of the East and West|651]])===
[[File:Sera FBI.png|thumb|left|Masumi thinks about the FBI]]
The case opens with Ran talking to Masumi about [[Heiji Hattori]] who is stopping by for a visit. Masumi is curious whether Heiji or Shinichi is the better detective. After Heiji is introduced to Masumi, Kazuha then calls Heiji and tells him that she is stuck at a restaurant because someone died and a foreigner [[Andre Camel]] is keeping everyone from leaving. Masumi proposes Heiji and Shinichi (via Conan's cellphone) have a deduction match. At the crime scene, Masumi becomes curious about the foreigner, Camel who secured the area. The police and Conan reveal Camel is an [[Federal Bureau of Investigation|FBI]] agent and Masumi takes interest. Meanwhile, Camel finds that Masumi looks familiar, but can't quite place why. He takes a picture of her and mails it to [[Jodie Starling|Jodie]] and [[James Black]] who are waiting outside. Jodie and James think Masumi resembles someone too, but only James Black correctly identified Masumi as female.

Meanwhile Masumi is busy helping with the case, asking questions and making comments about various deductions. Heiji nearly slips up with Conan's identity in front of her earning a pointed question from Masumi, but Heiji rescues himself by saying he thinks of Conan as Kudo when Conan gets smug have hearing Shinichi's deductions over the phone. Masumi doesn't seemed to be fooled though, her thoughts show that she seems to know Conan, not Shinichi, is the one solving the case while watching Conan come to his final conclusion.

===EYE (Manga: [[Volume_74#Eye_for_an_Eye|781]], Anime: [[The Design of Poison and Mirage|652]])===
Conan, Heiji, Masumi, and the rest of the group return to the Mouri Detective Agency after the poisoning case at Danny's restaurant. Heiji reveals the case that brought him to Tokyo; he received a mysterious letter signed in the name of a person who was murdered in Karuizawa requesting an investigation. Masumi takes an immediate interest in the case and wants to tag along, but Heiji refuses saying that the people he is visiting are only expected five people. Masumi is peeved at being left behind.

===Kogoro-san is a Good Man (Manga: [[Volume 75|787]], Anime: [[Kogoro-san is a Good Man|661]])===
Masumi is walking with Conan, Ran and Sonoko. While they wonder why Kogoro has been coming home late, Sonoko thinks he's found himself a mistress. Masumi thinks that he is just investigating a case. When an old lady named Takae Kiritani comes, she claims that Kogoro has been helping her. Masumi asks what he does for her to which she replies that its small things like helping around the house. Masumi isn't seen again for the rest of the case.

===Murder at Mouri Detective Agency (Manga: [[Volume 76|797-800]], Anime: [[Detectives' Nocturne|672-674]])===
[[File:Sera's motorcycle.jpg|thumb|right|Masumi in her motorcycle.]]
During a murder case at Mouri Detective Agency, after meeting Kogoro's new apprentice [[Rei Furuya|Tooru Amuro]], [[Juzo Megure|Megure]] comments that the number of detectives around Kogoro has increased again, referring to Masumi. Amuro takes interest in Masumi. Later, Kogoro and friends go over to a suspect's apartment. Masumi calls Ran after hearing about the murder on the news because she is worried about her and Conan. The call has an usual amount of static which alerts Amuro that there are listening devices present. Amuro abruptly hangs up Ran's phone on Masumi. Meanwhile, Conan intentionally gets himself kidnapped by the primary suspect. After Ran enables calling again, Masumi calls back immediately and is very upset because she was worried something had happened to Ran. Ran tells her that Conan has been kidnapped, and details to Masumi the murder at Kogoro's agency. In order to figure out where the kidnapper is headed, Kogoro and Amuro search the apartment and decide to go to the address of one of the other suspects.

Masumi arrives at suspect's home on [[Cars|her motorcycle]], but just misses Kogoro and the gang leaving. She hears the elevator descending and rushes back downstairs in time to follow Amuro's [[Cars|car]]. Meanwhile, the culprit has been driving around with Conan while Haibara has been directing Okiya's car towards them using the criminal tracking glasses. Okiya catches up to the kidnapper and relays what the car looks like to Kogoro. Amuro sees the suspect's car heading in the opposite direction so he quickly wheels around after it. Masumi, who has been following Amuro's car this whole time, u-turns after Amuro and continues chasing. Amuro gets in front of the suspect's car and stops it. The suspect gets out of the car holding Conan at gunpoint, but Masumi drives up onto the roof of the car. She swings her motorcycle around so that the rear wheel slams into the woman's face knocking her unconscious. With tears of relief, Masumi hugs Conan, happy he is safe. Amuro, Okiya, and [[Vermouth]] look on.

===Meeting with Scar Akai (Manga: [[Volume 76|801]], Anime: [[Won't Forgive Even One Millimeter|675]])===
[[File:Sera_675.jpg|thumb|left|220px|Masumi looking for Scar Akai.]]
Masumi is walking with Sonoko and Ran, and Ran is talking by phone with Conan. Masumi hears Haibara's voice in the background and becomes curious. She asks the two others what Haibara is like, and Sonoko says Haibara is like a woman in a child's body.

When Ran hangs up her cellphone, the topic switches over to [[Rei Furuya|Amuro]]. Masumi says to Ran she wants to meet Amuro because she never got a really good look at him from the last case, but Sonoko thinks she wants to meet Conan, instead. Ran says Shinichi and Conan are big fans of Sherlock Holmes. Masumi thinks about that she has known that for a long time.

Suddenly, Masumi sees [[Scar Akai]] in the crowd ahead. She runs after him, but she can't catch him. Ran wonders who Masumi was chasing, but Masumi replies she thought it was someone she knew, and silently appends in her mind that it would be impossible for the man she was chasing to be the person she thinks it was.

[[File:690-3.png|thumb|Masumi is shocked to see Subaru]]
===Yusaku Kudo's Cold Case (Manga: [[Volume 77|812-814]], Anime: [[Yusaku Kudo's Cold Case|690-691]])===
Masumi meets [[Subaru Okiya]] at Shinichi's house and she finds him suspicious. She began to think there is a woman at Kudo's house because there are a hair elastic, lipstick in a glass and a long hair in the sink trap. After that, all of them solved a case together that is similar to a case that Shinichi Kudo's father dropped out 10 years ago. It was revealed to be a theft case. Both Subaru and Masumi had got more suspicious of Conan and the identity of Shinichi Kudo. At the end, when the criminals were knocked, she saw Ran and Conan and she thought she was a 'bad kid', after all.

===Gunma Campground's Cabin Trap (Manga: [[Volume 77|815-817]], Anime: [[The Shadow Approaching Haibara's Secret|699-700]])===
[[File:Masome.png|thumb|left|120px|Masumi at the campground]]
She went camping when she meets Professor Agasa and Conan. The Detective Boys were lost. Masumi and Conan found the two policemen finding the corpse. After she and Conan solved the case, she and Conan rushed towards the burning cabin. Conan and the Detective Boys were talking about how they got safe. Mitsuhiko pointed the way were their savior went. Masumi then began to ask what kind of woman is their savior. She seemed to be surprised when she saw her on Mitsuhiko's cell phone.
{{clear}}
[[File:new-sera.png|thumb|left|150px|Masumi leans in to get a good look at Haibara]]
[[File:Sera is akai sister.jpg|thumb|right|200px|Masumi is revealed to be Shuichi's sister.]]

===Mystery Train (Manga: [[Volume 78|818-824]], Anime: [[The Jet-Black Mystery Train|701-704]])===
Masumi finally meets Haibara, and Haibara has a bad feeling about her (although it could have been due to Scar Akai spying on them from behind the door just then). Later when a murder occurs on the Bell Tree Express, she and Conan investigate. Masumi takes a video recording of the suspects running so she can show it to the detective boys in order to ask them which one had the closest gait to the masked suspect from earlier, but she is intercepted first by Scar Akai in the hallway. She stops and angrily asks him who he is. Scar Akai simply replies that she hasn't changed, reveals his face to her, and refers to her by her first name, "Masumi". In her shock Masumi calls him "Shu-nii", signifying that Shuichi is Masumi's older brother. She questions Scar Akai about what happened, saying that she heard he had died. Scar Akai then tasers her unconscious, stating that he was hoping for that response. Scar Akai later is revealed to be Vermouth in disguise, explaining why he attacked Masumi.

===The Blush Mermaid Heist (Manga: [[Volume 78|828]]-[[Volume 79|830]], Anime: [[Kaitou Kid and the Blush Mermaid|724-725]])===
[[File:SeraHat.jpg|left|thumb|200px|Masumi is relieved that she has got her hat back.]]
Masumi accompanies Conan, Ran, and Sonoko to the location of Kaitou Kid's next heist: a museum where the Blush Mermaid, a gem adhered to the shell of a turtle as a last ditch effort by a an Italian actress in an accident at sea to save her turtle by encouraging someone to rescue it. Before checking out the museum, Masumi asks Ran if she saw a [[Scar Akai|strange man in black]] when she found the hat on the Belltree Express. After the group arrives at the room where the turtle is being held in a large aquarium, [[Ginzo Nakamori|Inspector Nakamori]] pulls Masumi's face to see if it is a mask worn by Kid. Annoyed by Nakamori's mistaken gender assumption and having her face pinched, Masumi knees him in the privates ostensibly to prove he isn't Kid. Masumi then runs off to the bathroom. Later, when Kid makes his move, Masumi is one of many caught in his trap: the rug on the floor is pulled up by strings so that it pins everyone standing on it to the front of aquarium. As soon as the rug drops, everyone sees the tank is empty except for a card left by Kid. This leaves Conan and Masumi quite dumbfounded as to how Kaitou Kid could have removed the turtle. Later, Conan reveals that Masumi is really Kaitou Kid, and he had made a critical error in his acting by assuming Masumi was a male. Kaitou Kid had locked the real Masumi bound and gagged in the men's bathroom after knocking her out with a stun gun. Upon gaining consciousness, Masumi escapes her bonds, rushes out of the bathroom, and gives a still disguised Kid a fierce kick to the face. After Kid escapes (due to Ran distracting Masumi by pointing out that everyone can see her underwear), Masumi is relieved that she at least managed to recover her hat, which she thinks is special because it somehow has the same feel as her brother Shuichi Akai's hat.

=== Cooking Show Murder (Manga: [[Volume 80|844-846]], Anime: [[The Treasure Chest Filled with Fruits|727-728]])===
[[File:SeraSmile.jpg|right|thumb|150px|Masumi is smiling and blushing when Conan asks her if they had met each other before.]]
Conan, Ran, Sonoko, Kogoro and Masumi go to a live cooking show. Conan wants to ask something important to Masumi, but a murder gets in his way. While solving the case, Ran realises that Masumi and her might have met each other before, since Ran thinks of waves in the beach each time Masumi gets away. At the end of the case, Conan asks Masumi if they had met each other before. Masumi smiles and says she doesn´t know, but actually she thinks "Of course we have, but I can´t tell you until the time comes..."

===Adultery Investigation (Manga: [[Volume 81|856-858]], Anime: [[Bathroom Where Ran Collapsed As Well|740-741]] )===
[[File:SeraCall.png|left|thumb|150px|Masumi is calling her brother on the phone.]]
After being hired by a classmate, Keiko Kitao, Masumi is investigating to see if the boyfriend of Keiko's sister has fully committed to their relationship. However, as the atmosphere is rapidly changed by the murder, Masumi and Conan start to investigate the crime scene. When Conan has finally deduced who the culprit is, he also observes Masumi making a call with someone saying "...Say, my deduction... It's not wrong, is it?". Upon solving the case, Eri states having seen Masumi talking to her brother on the phone.

=== Meeting Makoto (Manga: [[Volume 81|859-861]], Anime: [[The Suspect is Makoto Kyogoku|744-745]])===
[[File:SeraAndMakoto.jpg|right|thumb|200px|Masumi attacks Makoto with her Jeet Kune Do.]]
At a Bowling Center with Conan, Ran, Sonoko and Kogoro, Masumi is introduced to Sonoko's boyfriend Makoto. Shortly before, Makoto mistakes Masumi for a stranger being "overly friendly" with Sonoko and tries to fight her. Masumi explains that she has been taught Jeet Kune Do by her older brother, she also reveals that besides her assumingly dead brother, she also has a second-oldest brother. Furthermore, Masumi explains to Conan that her brother also advises her on cases by phone. After successfully investigating the crime scene with Conan, Masumi steps aside with her smartphone and types in the message "It seems like he's also arrived at the truth... But whether or not our deductions are the same - lately I've been losing confidence in that regard...". When the recipient writes back "Who is he? I'd like an explanation!", Masumi takes a picture with her smartphone. However, the recipient's answer, "If it's him, there's no problem." reveals that he is familiar with Conan. It is heavily implied that it is the same person Conan saw Masumi making a call with in File 857.

===Red Woman Case (Manga: [[Volume 82|872]]-[[Volume 83|875]], Anime: [[The Tragedy of the Red Woman|754-756]])===
Masumi takes a request from her middle brother to consult in his place about a case involving some of his high school classmates who are now 28-29 years old. On the way to a cabin in the woods, Masumi tells Conan and the gang more about her family history and timeline. She reveals that she and her brothers each have different family names for various reasons, one of which is the death of her father. The case takes a dark turn when one of the classmates is found murdered in a bathtub of tomatoes. With the help of the Nagano police, Conan and Masumi manage to solve the case. Later, Masumi asks Conan to find her cellphone in the kitchen by calling it with his. He does so and Conan notices the call background screen is a [[Mary|child who looks like Masumi]] with eye bags similar to those of the [[Akai family]] members. Masumi mentions having a younger sister earlier on (Episode 754), so Conan suspects Masumi was intentionally trying to show him the child for some reason.

===Romance Novelist Murder Case (Manga: [[Volume 83|876]]-[[Volume 83|878]], Anime: [[The Romance Novel with the Unexpected Conclusion|759-760]])===
On the way home from school, Ran and Sonoko decide to visit Masumi's hotel (which is different from the other one she has been staying at earlier). Masumi claims she had a meeting with her supposedly-hard-to-reach [[Akai family's middle brother|middle brother]] planned, so she texts him to reschedule. Conan seems to notice this contradiction. At the hotel, Conan tries to peek in Masumi's bedroom, but Masumi wards him off by embarrassing him. Masumi also asks Conan is she reminds him of someone he met in the past, but Conan draws a blank. A murder interrupts the meeting. While Conan is investigating, he notices the middle-school aged [[Mary|child]] from Masumi's cellphone picture in the gathered crowd. Later, Conan and the gang return to Masumi's room, and Conan hides his glasses earpiece [[microphone]] to spy on the apartment. It is quickly found and destroyed by Masumi and the child after Conan departs with Ran and Sonoko. Masumi asks the child is she is beginning to like him, but the child responds that she is still long way from trusting him. The child asks Masumi to tell Conan she is her little sister from outside the territory if he asks about her. Masumi doesn't mention that she showed Conan the child's picture.
[[File:Masumi and Scotch Flashback EP836 (3).jpg|150px|thumb|right|Masumi remembers meeting a man nicknamed Scotch]]

=== Shogi Tournament (Manga: [[Volume 85|899-902]], Anime: [[Taiko Meijin's Match of Love|785-786]]) ===

=== Poolside Case (Manga: [[Volume 85|903]]-[[Volume 86|905]], Anime: [[The Mystery Sinking in the Midsummer Pool|787-788]]) ===

=== Ran & Shinichi - First Contact (Manga: [[Volume 87#Ran & Shinichi - First Contact|921-924]], Anime: [[Memories from Sakura Class|853-854]]) ===

=== A Killer in Ramen Ogura (Manga: [[Volume 88#A Killer in Ramen Ogura|928-930]], Anime: [[Ramen So Good, It's to Die For 2|827-828]]) ===

=== Girls Band Murder Case (Manga: [[Volume 88#Girls Band Murder Case|936-938]], Anime:[[The Unfriendly Girls Band|836-837]]) ===
Four years ago, Masumi was taught a few notes on the base guitar by a friend of her brother, [[Shuichi Akai|Shuichi]]. The friend was referred to as "[[Scotch]]" by another person who Masumi thinks looks like [[Rei Furuya|Rei]].

=== Soul Detective Murder Case (Manga: [[volume 90#Soul Detective Murder Case|951-953]], Anime: TBA) ===

=== Swimsuit Festival Murder Case (Manga: [[Volume_91#Swimsuit_Festival|969]]-[[Volume_92#Swimsuit_Festival|971]], Anime:TBA) ===
Masumi intentionally puts on a bathing suit similar to the one that she had worn in the past to try to jog Conan's memory of where they met. A case occurs, which involved the method of counting fingers in different countries. Masumi seems to count the same way that is used in the UK, but seems to think that it is the way it is done in the US. As Conan corrects her, she seems confused. Conan thinks back on all of the times that Masumi has done things that seem to imply that she was in the UK rather than the US and he finally remembers the events of 10 years ago by repeating イギリス (Igirisu / Britain) in is head.
{{clear}}

=== A Chance Meeting at the Beach (Manga: [[Volume_92#A_Chance_Meeting_at_the_Beach|972-974]], Anime:TBA) ===

== Non-Canon Plot Overview ==

=== Movie 18: [[Dimensional Sniper]] ===
Sera appeared in this movie as an investigator of the person who had been shot in the Bell Tower. She and Conan helped in chasing the culprit and afterwards was shot by the culprit after saving Conan.

== Plot Exposition ==
=== Hints that Masumi was Shuichi Akai's sister ===
Masumi was revealed to be Shuichi Akai's sister on the Bell Tree Express after a confrontation with [[Scar Akai]]<ref name=821p16>Manga [[Volume 78]], File 4 (821), pg 16: "Mystery Train (Junction)"</ref> and while sleeptalking.<ref name=823p4>Manga [[Volume 78]], File 6 (823), pg 4: "Mystery Train (Releasing Smoke)"</ref>
[[File:Sera_and_Shuuichi.png|thumb|right|300px|Masumi and [[Shuichi Akai]].]]
* Masumi has bags under her eyes identical to Shuichi Akai's.
* Masumi Sera's name is also incredibly similar to Mobile Suit Gundam character [http://gundam.wikia.com/wiki/Sayla_Mass Sayla Mass] ({{lang|ja|セイラ・マス}}, ''Seira Masu''). [[Shuichi Akai#Name origin|Shuichi's name is derived]] from Sayla Mass's older brother's name, Char Aznable.
* Conan said he has a feeling he had met her before. "''Somehow I feel like we've met somewhere before, it might be that person resembles someone I know, that's why the feeling that we've met before is on my mind...''"<ref>Manga Chapter 771: Let's Hear Your Brilliant Deduction! p.11</ref>
* [[Andre Camel]] and most likely [[James Black]] seem to recognize her from somewhere. On another interesting note, James was the first to recognize that Masumi was a girl. Everyone else thought that she was a guy when they first saw her. Since James was Shuichi's boss, he would most likely know that Shuichi has a younger sister and what she would look like.
* Masumi lived in Japan until three years ago when her family moved to America. This matches with the time when Shuichi was infiltrating the Black Organization. The family's move to America could be the FBI's attempt to protect them should something go wrong with Shuichi's mission.
* In Chapter 801, Masumi chased after [[Scar Akai]] who appeared while she was walking with Ran in front of the Mouri Detective Agency. Although, Scar Akai hid before she could find him, she told Ran that she had just seen "someone she knew".
* In Chapter 859, Masumi, when being asked who taught her Jeet Kune Do, answers that her older brother did. Consequently, Conan asks Sera: "But, didn't you say your older brother was dead?" This leads to Masumi remarking "Yeah... That's what I heard." also further supporting the theory that Masumi is in Japan to investigate her brother's death.

=== Hints that Masumi was not Bourbon ===
* In Chapter 801, Masumi chased after [[Scar Akai]] who appeared while she was walking with Ran in front of the Mouri Detective Agency. Although, Scar Akai hid before she could find him, she told Ran that she had just seen "someone she knew". She then thinks there is "no way it was possible" regarding the man she saw, which would make sense if she thought Shuichi was dead. This implied she wasn't Bourbon, since Bourbon believes he is the only one who can kill Shuichi, implying that Gin might have failed to do so. Hence Bourbon wouldn't think that it was impossible to meet Shuichi again in the street.

==Relationships analysis==

===Friends & Family ===

==== Shuichi Akai ====
[[Shuichi Akai]] is Masumi's older brother. She didn't get to meet him until she was six-seven years old, because Shuichi went to study abroad before Masumi was born. At first meeting she was very shy, but she did make some pranks in an attempt to make him smile. Masumi refers to Shuichi as "Shu-nii", implying that they were close. Masumi seems to miss him after his supposed death. In the Blush Mermaid Heist, Masumi is shown to be fond of her fedora as she believes it has the same "feel" as Shuichi's old hats. Shuichi sent Masumi Jeet-Kune-Do training tapes while she was in elementary school. She watched these so many times while practicing that she wore them out.<ref name="876p2">Manga [[Volume 83]], File 4 (876), pg 2: "Romance Novelist"</ref> She describes her eldest brother as ''strong'' in contrast to her second - oldest brother.<ref name="859p6-7">Manga [[Volume 81]], File 9 (859): pgs 6-7: "Jeet Kune Do vs. Karate"</ref>

==== Conan Edogawa ====
[[File:EP671-674_25.png|thumb|right|Masumi hugs Conan after rescuing him in [[Detectives' Nocturne]].]]
Masumi is interested in [[Conan Edogawa|Conan]]'s abilities as a detective and has been gathering information on him and his friends. She appears to be certain that Conan is Shinichi Kudo. Despite her initial suspicious presentation, Conan felt like she wasn't a bad person and so didn't mistrust her. Conan at several points questions her if they've met before, but she denies this, once secretly thinking, "Now's not the time". The period in which such an encounter could have taken place is initially hinted to be somewhere before the three-year span of Masumi's sojourn in the United States, when she was in her preteen years.<ref name="Mang83">Manga [[Volume 83]], File 2 (874), pg 7-8: "Red Past"</ref><ref name="Mang86">Manga [[Volume 86]], File 1 (905): "The Truth Rises to the Surface"</ref>

It is later shown that she had met Conan/Shinichi ten years ago, when the Akai family had gathered on an undisclosed beach in Japan prior to Shuichi Akai joining the FBI. By chance, Shinichi and [[Ran Mouri|Ran]] had also vacationed there, and they all ended up as witnesses and investigators in a gone-awry flight attempt from a robbery. When Shinichi managed to make Shuichi laugh (something Masumi had miserably failed to achieve) with his intelligence, observation skills and some unintended jokes, Masumi, in her admiration for Shinichi, began to call him "wizard". It is quite possible that this meeting inspired Masumi to become a detective herself.<ref name="Mang92">Manga [[Volume 92]], File 2-4 (972-974): "A Chance Meeting at the Beach"</ref>

If Masumi really lived in England, instead of America, then it's possible that she saw the tennis match from the London case on TV and recognized Conan as Shinichi based on his proclamation as 'Holmes' apprentice'.

On several occasions, such as the dramatic conclusion of the [[Volume 76#Online Client|Online Client Case]], Masumi has displayed an intensely affectionate air towards Conan which somewhat transcends a mere "big sister" relationship.<ref>Manga Chapter 800: ''Online Client Case'' - "When Objects Collide"; Anime Episode 674: ''[[Detectives' Nocturne]]'' - "Bourbon"</ref> In fact, it is hinted during the [[Volume 83#Romance Novelist Murder Case|Romance Novelist murder]] and in the movie ''[[Dimensional Sniper]]'' that she may actually be entertaining a crush on Shinichi/Conan and hopes of initiating a closer relationship with him. However, the actual level of her feelings for him is yet to be publicly revealed.

==== Ai Haibara ====
Masumi has been interested in meeting [[Ai Haibara]] for yet unrevealed reasons and has been secretly gathering information on her. She also seemed to recognize [[Shiho Miyano]] in the video of her rescuing the [[Detective Boys]]. Haibara in turn feels uneasy around Masumi, especially in close contact situations though arguably it could also be due to Scar Akai's presence near Masumi.

==== Ran Mouri ====
[[File:Ran and Sera and Wave.jpg|thumb|left|180px|Ran hears sounds of rippling waves when she sees Masumi hurried away]]
Since enrolling at Teitan High, Masumi and [[Ran Mouri|Ran]] have become friends and often walk home from school together. Masumi has also declared Ran as "her type" when they first met as a sign of liking, though this ultimately led Sonoko, Conan and Ran herself to mistake Masumi for a boy.

At one point, Ran recalls having met Masumi before in the past, hearing the sound of "rippling waves" when the she sees the latter leaving, "as if some sort of magic were at work".<ref name="Mang86"></ref> It is revealed in a later story that she and Masumi had actually met 10 years before, when they were both still children, on a beach, where by happenstance she, Shinichi and the Akai family inadvertently became embroiled in the aftermath of a crime (see '''Conan Edogawa''', above).<ref name="Mang92"></ref>

==== Sonoko Suzuki ====
Since enrolling at Teitan High, Masumi and [[Sonoko Suzuki|Sonoko]] have become friends and often walk home from school together, with Sonoko describing Masumi as a popular girl who is "cheery, sociable, boyish and cute" and on top of that, a "Jeet Kune Do using detective", though she also teasingly remarks that the only thing "against Sera" is her flat chest.

==== Akai family's middle brother ====
Masumi appears to have a good relationship with her [[Akai family's middle brother|second-older brother]] and often consults him regarding information or deductions about the cases she faced, and also has a high regard of her brother's intellect, even considering the already sharp Shuichi as "strong" in contrast to her second older-brother.

==== Tsutomi Akai ====
Masumi's father died before she was born, so she never knew him. But he refer to him as 'Papa'

=== Black Organization ===

==== Rei Furuya ====
Rei first saw Masumi in Detectives Nocturne case and seemed to recognise her. They formally met in chapter 936 (Girls Band) at [[Café Poirot]]. Masumi felt like having met him and even asked him directly about that, but Rei said that was the first time they met. When Masumi talked about a friend of her brother who taught her play the guitar, Rei also seemed to know about that incident. In Masumi's flashback of that friend, a man who looked very much like Rei appeared, and Masumi once again wondered about it, to which Amuro replied that she took the wrong person.

==Speculation==
[[File:Sera Knowing Conan's Name.png‎|thumb|right|170px|Masumi mentioning Conan's name.]]
=== Masumi met Shinichi and Ran when she was younger and knows Conan is Shinichi ===
*Masumi knew [[Conan Edogawa|Conan]] and [[Ran Mouri|Ran]]'s identities before they introduced themselves. She also knew that Conan is a detective.<ref> [[Volume 73]], File 6 (768)</ref>
*Masumi seems to know that Conan is the brains behind Sleeping Kogoro. Conan seems to think that he may have met Masumi before or that she resembles someone that he knows. He believes that she got the deduction of a case wrong just so that he would reveal himself. <ref> [[Volume 73]], File 9 (771)</ref>
*Conan realizes he met Masumi before because he finds her snaggletoothed smile familiar,<ref name=845p16>Manga [[Volume 80]], File 6 (845), pg 16: "Our Territory"</ref>
*Masumi admits that she has met Conan before, but she can´t tell him until "the time" comes.<ref name=846p16>Manga [[Volume 80]], File 7 (846), pg 16: "The Magic Lock"</ref>
*Ran has met Masumi as well because Masumi's figure as she runs away reminds her of "sounds of rippling waves, as if some sort of magic were at work."<ref name=846p4>Manga [[Volume 80]], File 7 (846), pg 4: "The Magic Lock"</ref>
*Masumi, asks Conan if he once met a girl "a long time ago and could never forget [her]"<ref name=876p11>Manga [[Volume 83]], File 4 (876), pg 11: "The Romance Novelist"</ref> and gets annoyed when he says he can't recall someone like that.
*Ran has a flashback to when she saw a younger Masumi, who is wearing a bathing suit, say, "You are a wizard, right?". Ran also feels that she has met [[Mary]].<ref> Manga [[Volume 86]], File 1 (905)</ref>
*The meeting occurred 10 years ago, as mentioned by Mary.<ref> Manga [[Volume 90]], File 5 (953)</ref>
*Masumi puts on a swimsuit similar to the one in Ran's flashback in order to jog Conan's memory, which results in him remembering her in that bathing suit as well, along as three other people, assumed to be her relatives. <ref> Manga [[Volume 91]], File 11 (969)</ref>

In Chapter 771, it is revealed that she also knows Professor Agasa, although she calls him "Professor what's his name". Although this could be explained away as her talking to Conan off screen and her just not remembering Agasa's name.

=== Identity of Masumi's middle brother ===
{{main|Akai family's middle brother}}

=== The Wizard ===
In a PS, [[Akai family's middle brother|Masumi's middle brother]] asks if she "has already met the Wizard?"<ref name=861p15-16>Manga Volume 81, File 11 (861), pg 15-16: "Just like Magic"</ref> Masumi's thought reply is "You could say so..." Later, Masumi "thinks aloud" that her reason for returning to Japan is to meet the Wizard once more.<ref name=874p8>Manga [[Volume 83]], File 2 (874), pg 8: "The red past"</ref> The identity of the Wizard is still unclear.

==== Shinichi Kudo ====
Tellingly, Masumi turns towards Conan when thinking of the answer "You could say so". At this point Masumi seems to know Conan is Shinichi. If Shinichi was nicknamed "The Wizard" by Masumi and/or her brother because of what happened when he and Masumi met in the past, then the response is appropriate since she could only sort of meet with Shinichi, because Shinichi shrunk into Conan. It's possible that the event where Shinichi earned the nickname "The Wizard" was Shinichi and Ran's meeting with Masumi 10 years ago. When trying to remember Masumi, Ran specifically mentions "sounds of rippling waves, as if some sort of magic were at work."<ref name=846p4>Manga [[Volume 80]], File 7 (846), pg 4: "The Magic Lock"</ref> A "magical" incident, if it was Shinichi's doing, might have earned him the nickname. Ran has a flashback of a young Masumi saying "You are a wizard, right?".<ref> Manga [[Volume 86]], File 1 (905)</ref> Conan seems to have remembered meeting Masumi 10 years ago and is shown as a young Shinichi standing in front of a large wave.<ref> Manga [[Volume 92]], File 2 (971)</ref>

==== Someone else ====
At this point it is unlikely that the Wizard is anyone else. There is evidence that Masumi nicknamed the person who she calls Wizard, at a point in the past while Ran was nearby. If Ran was nearby, then this would have to have happened when they first met 10 years ago, meaning that the person must be someone who existed back then. The topic of the Wizard came up during a text conversation about Conan between Masumi and her middle brother, and her response to if she had met the Wizard again was "You could say so", which is more than likely implying that she is referring to Conan, and therefore Shinichi.

[[File:Akai's picture 338.PNG|thumb|right|The picture of the Detective Boys the mystery assistants captured]]
===Masumi learned about Haibara from Shuichi's picture===
Masumi initially had an interest in Haibara. This is strange because Haibara didn't exist prior to Shiho shrinking. The knowledge of Shiho should have been secret to her as well, because Shuichi Akai's infiltration of the Black Organization was a secret. If Masumi doesn't even know the details of her brother's death, why should she know about Shiho? Masumi may recognize Haibara from pictures of Conan and Haibara that Shuichi took back during the Vermouth arc. It is standard procedure in the US to send the personal belongings of the dead back to their families. If Shuichi mixed these pictures in with his own things when he took them out of his truck before meeting with Kir, it's possible they were overlooked when the FBI sent Shuichi 's things to his family. If Masumi was interested in finding out how and why Shuichi died, she would begin by researching the people in those pictures and those connected with them in hopes of finding clues.
{{clear}}


==Character popularity==
*In honor of the release of the 800th manga chapter, Shonen Sunday held a popularity poll/contest containing 91 Detective Conan characters to choose from. Masumi placed 9th overall with 292 votes.<ref>{{cite web|url=http://forums.dctp.ws/viewtopic.php?f=4&t=8024|title=Shonen magazine detective conan official poll results published [magazine pic]|date=2012-02-28|publisher=eva|accessdate=2012-02-29}}</ref>

*Masumi ranked 10th in the Digest Book 50+ poll "Best Detective Conan characters", with 107 votes.

*Masumi ranked 5th in the Digest Book 60+ poll "Cutest Detective Conan characters", with 135 votes.

*Masumi ranked 10th in the Digest Book 70+ poll "Characters you want to go on a date with", with 106 votes.

*Masumi ranked 11th in the Digest Book 80+ poll "Character you want to marry", with 281 votes.

==Name origin==
{{Nihongo|Masumi Sera's|世良・真純|Sera Masumi}} name comes from the [[wikipedia:Mobile Suit Gundam|Mobile Suit Gundam]] character {{Nihongo|[[wikipedia:Sayla Mass|Sayla Mass]]|セイラ・マス|Seira Masu}}.<ref>[[Sherry's soliloquy|Sherry's soliloquy (2012-06-17)]], Gosho was referring to the revelation that Masumi is Shuichi's sister (Manga File 821): {{lang|ja|やっぱりアルテイシアだったのね・・・}} (So it was '''Artesia'''…). Note that "Artesia" is another name of '''Sayla Mass'''.</ref> The kanji for Masumi's surname mean 'good world'. The kanji for her first name, Masumi, mean 'true' and either 'pure' or 'net.'

==Quotes==
{{cquote|Deletion. For data at least ... is an easy task to accomplish.|Masumi, on deleting a picture of Haibara from her computer, File 777 pg 16}}

{{cquote|I guess I'm a bad kid after all...|Masumi, while crying, File 814 pg 16}}

==Trivia==
*Masumi is based on [[Natsuki Koshimizu]], a tomboy detective girl turned criminal who made her first appearance in the [[Volume 54#Detective Koshien Case|''Detective Koshien Case'']]. Since Natsuki had proven highly popular, but Aoyama couldn't recycle her as a protagonist, the character of Masumi was created instead.<ref>''Shonen Sunday'' #33</ref>
*When she was young she liked to read the "[[Night Baron]]" series, so she is fan of [[Yusaku Kudo]].
*Her catchphrase, "Case Closed" (said in English), is likely a reference to the English-language name of Detective Conan.
*Masumi owns an [[Vehicles_in_Detective_Conan#Sera's Yamaha_Artesia_XT400|Artesia XT400]].
*In File 859, Masumi reveals that she has a second-older brother and that her oldest brother taught her Jeet-Kune-Do.
*Masumi speaks Queen's English.<ref>[[:File:Postcard2015 1.jpg]]</ref>

==In other languages==
{{BeginTable CharLang}}
{{OtherLangItem|flag=Japan|Japanese|真純 Masumi|世良 Sera}}
{{OtherLangItem|flag=Arab League|Arabic|ماسومي Māsūmi|سيرا Sēra}}
{{OtherLangItem|flag=France|French|Masumi|Sera}}
{{OtherLangItem|flag=Mexico|American Spanish|Masumi|Sera}}
{{OtherLangItem|flag=Brazil|Brazilian Portuguese|Masumi|Sera}}
{{CharLangItem|flag=Italy|Italian|Masumi|Sera}}
{{CharLangItem|flag=North Korea|flag2=South Korea|Korean|세라 Sera|양 Yang}}
{{OtherLangItem|flag=Thailand|Thai|มาสึมิ Mās̄ụ-mi|เซระ Sera}}
{{EndTable}}

==See also==
* [[Characters]]
* [[Akai family]]

==References==
<references />

{{DEFAULTSORT:Sera Masumi}}
[[Category:Characters]]
[[Category:Female characters]]
[[Category:Detectives]]
[[Category:High school detectives]]
[[Category:High school students]]
[[Category:Martial artists]]
[[Category:Characters who know Conan's identity]]
[[Category:Characters named after Mobile Suit Gundam characters]]
[[Category:This page has images with hideous anime aggregate site watermarks]]
[[de:Masumi Sera]]
{{Characters}}