Girls Day Mystery 4: Difference between revisions

Naoko Shimamura
	Victim (poisoned-injured); 21 years old; Sociology student at Haido Women's University;

Satomi Amari
	Victim (poisoned); 21 years old; Sociology student at Haido Women's University;

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Latest revision as of 03:12, 1 October 2026

Chronology

‹ The Red-Brick Warehouse and the Vanishing Kidnapper

List of Episodes

List of Filler Cases

Episode "ZERO" The Shinichi Kudo Aquarium Case ›

Girls Day Mystery 4 (女子会ミステリー4(フォー) ,Joshikai Misuterī Fō^?) is the 1186th episode of the Detective Conan anime.

Cast

Characters

Case

Situation

Haibara, Ayumi, Ran, Sonoko, and Sato go to an all-you-can-eat sweet shop in Haido Town Royal Hotel, celebrating the good health and future achievements of the girls. However...

Murder/Attempted murder

Location: An all-you-can-eat sweet shop in Haido Town Royal Hotel

Victims: Satomi Amari (deceased) and Naoko Shimamura (hospitalized)

Age: 21 years old (both victims)

Method: Poisoning using snake venom

Suspects: Kyoka Kasai, Ryuichiro Mita and Shunsuke Yoshimura

The two ladies began to writhe in pain and suddenly collapsed after consuming the drink, with one having passed away.

Ran tries to contact Shinichi Kudo for help solving the case, while Ayumi calls Conan. However, Conan (as well as Shinichi) couldn't hear the calls because he had left both of his phones elsewhere so that he can focus on fishing with Professor Agasa. With no help from either Conan or Shinichi, the girls will have to solve the case on their own.

The girls decide to ask the people nearby, along with local police. Kyoka Kasai is the first to be asked; she is a sociology student at Haido Women's College who works here as her part-time job. In fact, Naoko Shimamura and Satomi Amari are both at Haido Town Royal Hotel to visit Kasai upon knowing she works there, which explains why she is crying over Amari's death. Moreover, Kasai states that both were such good and earnest individuals that no one hates them at all. Ryuichiro Mita is the second to be on-screen; he is an office worker at Haido Brotherhood Company. He knows Shimamura because he once saw her in his company, but was not sure if she was applying or not.

Shunsuke Yoshimura is the third one on-screen; he is a municipal worker. It is worth noting that Ayumi has asked both Mita and Kasai what sweet they like before their respective interrogation ends, and she does the same with Yoshimura. This time, his answer is not delivered as smoothly as the two previous, and he also shows strange expressions upon seeing a piece of skin found at the scene. Both things prompt the girls to ask Yoshimura again. From there, we learn that he works as a snake hunter, and was afraid of being convicted for murder if he revealed to them about the skin. On a side note, the cause of poisoning is revealed to be snake venom. What a coincidence!

Moments later, Kasai reaches out to the girls to confess that she herself is knowledgeable about snakes, as she is working very hard to become an underground snake charming idol. Kasai also notes that the snake she has for training, Kobu, has had its fangs removed so that Kobu can bite her all day and she’ll be just fine!

After reviewing the information they’ve just gathered, Ayumi proposes using their imagination to figure out who poured the poison, which further confirms that anyone could be the culprit. Just then, Ran’s statement helps Haibara realize something, as she then asks the two police officers to confirm a few things.

People

Kyoka Kasai
	21 years old Sociology student at Haido Women's University Haido Town Royal Hotel part-timer Underground snake charmer idol

Ryuichiro Mita
	44 years old Pharmaceutical researcher at Haido Brotherhood Company

Shunsuke Yoshimura
	32 years old City hall worker Snake hunter

Sora Tsujino
	23 years old Tokyo MPD police officer

Yukio Kashima
	25 years old Tokyo MPD police officer

Police officer
	Tokyo MPD police officer

Resolution

Show spoilers »

Trivia

The "challenge" to poison the holy grail is a reference to Indiana Jones.
This is the last episode that the third door eyecatch is used.
The fish Conan caught in the episode were the following: An immaculate boxfish, a scrawled filefish (which Conan thought was a thread-sail filefish), a brown-lined puffer (which Agasa thought was blacktail tripodfish), and a marbled flounder. All of which, except the last one, are venomous.
The sweets mentioned are Mont Blanc with Tamba chestnuts, tarte Tatin with Shine Muscat and Kyoho grapes and Griotte-Pistache tart (made with tart cherries and pistachios).
Haido University is modeled after Rikkyo University, which was featured in The Ranpo Mansion Murder Case.

Gallery

For the full gallery, click here:

In other languages

Language	Title	Translation
French (Subbed)	Une enquête entre filles 4 (quatre)	Girls' investigation 4
German (Subbed)	Mädels-Klub-Mystery 4	Girls Club Mystery 4
Thai	เหล่าเด็กสาวผจญปริศนา 4	The Mystery-Solving Girls 4

v • d • e Season 30 (2025)
#1148: The Detective Boys and the Two Leaders (Part 1) #1149: The Detective Boys and the Two Leaders (Part 2) #1150: Kaitou Kid and the Crown Trick (Part 1) #1151: Kaitou Kid and the Crown Trick (Part 2) #1152: Last Dance #1153: The Yamahime of Yakushima (Part 1) #1154: The Yamahime of Yakushima (Part 2) #1155: Follow Them! Detective Taxi 2 #1156: The Ishikawa Yorumasshi Mystery (Part 1) #1157: The Ishikawa Yorumasshi Mystery (Part 2) #1158: The Detective Boys and the Traditional Dream House #1159: The Whereabouts of the Goodbye #1160: When the Shishi-odoshi Sounds #1161: The Secret's Afterimage #1162: The Case of Ayumi's Illustrated Diary 5 #1163: The Counting Song Heard in the Dark #1164: The 17-Year-Old Truth (The Bloody Knight) #1165: The 17-Year-Old Truth (The Perceptive Devil) #1166: The 17-Year-Old Truth (The Far-Sighted Bishop) #1167: The 17-Year-Old Truth (The Queen's Gambit) #1168: Genta's Casebook of the Eel #1169: The Mystery of the Man-Eating Classroom (Part 1) #1170: The Mystery of the Man-Eating Classroom (Part 2) #1171: The Reason He Became a Butler (Part 1) #1172: The Reason He Became a Butler (Part 2) #1173: It's a Ghost! #1174: The Glassy Water's Surface (Part 1) #1175: The Glassy Water's Surface (Part 2) #1176: The Hero of Ishinomaki #1177: Find the Phantom Giant #1178: The Crimson Skeleton of Mt. Washio (Part 1) #1179: The Crimson Skeleton of Mt. Washio (Part 2) #1180: The Lucky Cat Saw Everything #1181: Buchi Returns a Favor #1182: Arrest That Face #1183: The Interrogation Room 3 #1184: The Red-Brick Warehouse and the Vanishing Kidnapper (Part 1) #1185: The Red-Brick Warehouse and the Vanishing Kidnapper (Part 2) #1186: Girls Day Mystery 4
Yellow background = TV Original
« Season 29	List of episodes	Season 31 »

@@ Line 1: / Line 1: @@
-{{NewEpisode}}
 {{InfoBox TV
 | episode                = 1186
@@ Line 6: / Line 5: @@
 | title                  = {{PAGENAME}}
 | japanese-title         = {{lang|ja|女子会ミステリー{{ruby|4|フォー}}}} <br> (Joshikai Misuterī Fō)
-| rating                 =
+| rating                 = 5.1%
 | Filler case number     = #453
 | airdate                = December 27, 2025
@@ Line 17: / Line 16: @@
 | solved-by              = [[Ai Haibara]]
 | next-conan-hint        = Holy grail
-| voice-cast             = [[Minami Takayama]] as [[Conan Edogawa]] <br> [[Kenichi Ogata]] as [[Hiroshi Agasa]] <br> [[Wakana Yamazaki]] as [[Ran Mouri]] <br> [[Naoko Matsui]] as [[Sonoko Suzuki]] <br> [[Yukiko Iwai]] as [[Ayumi Yoshida]] <br> [[Megumi Hayashibara]] as [[Ai Haibara]] <br> [[Atsuko Yuya]] as [[Miwako Sato]] <br> [[Takeo Otsuka]] as Yukio Kashima <br> [[Chiaki Kobayashi]] as Sora Tsujino <br> [[Daisuke Kasuya]] as Police officer <br> [[Sara Matsumoto]] as Naoko Shimamura <br> [[Haruka Okamura]] as Satomi Amari <br> [[Yasuhiro]] as Ryuichiro Mita <br> [[Takayuki Kondo]] as Shunsuke Yoshimura <br> [[Ayumi Hinohara]] as Kyoka Kasai
+| voice-cast             = [[Minami Takayama]] as [[Conan Edogawa]] <br> [[Kenichi Ogata]] as [[Hiroshi Agasa]] <br> [[Wakana Yamazaki]] as [[Ran Mouri]] <br> [[Naoko Matsui]] as [[Sonoko Suzuki]] <br> [[Yukiko Iwai]] as [[Ayumi Yoshida]] <br> [[Megumi Hayashibara]] as [[Ai Haibara]] <br> [[Atsuko Yuya]] as [[Miwako Sato]] <br> [[Takeo Otsuka]] as [[Yukio Kashima]] <br> [[Chiaki Kobayashi]] as [[Sora Tsujino]] <br> [[Daisuke Kasuya]] as Police officer <br> [[Sara Matsumoto]] as Naoko Shimamura <br> [[Haruka Okamura]] as Satomi Amari <br> [[Yasuhiro Fujisawa]] as Ryuichiro Mita <br> [[Takayuki Kondo]] as Shunsuke Yoshimura <br> [[Ayumi Hinohara]] as Kyoka Kasai
 | director               = [[Yasuichiro Yamamoto]] <br> [[Nobuharu Kamanaka]]
 | screenplay             = [[Akatsuki Yamatoya]]
@@ Line 43: / Line 42: @@
 {{char|Miwako Sato}}
 }}
-<!--
-== Gadgets ==
-{{Gadgets Appearances|
-}} -->
 == Case ==
 === Situation ===
+[[Ai Haibara|Haibara]], [[Ayumi Yoshida|Ayumi]], [[Ran Mouri|Ran]], [[Sonoko Suzuki|Sonoko]], and [[Miwako Sato|Sato]] go to an all-you-can-eat sweet shop in Haido Town Royal Hotel, celebrating the good health and future achievements of the girls. However...
 {{InfoBox Crime
-| crime              = Food poisoning - attempted murder?
+| crime              = Murder/Attempted murder
-| location           = An all-you-can-eat sweet shop in Haido City Royal Hotel
+| image              = EP1186 Case1.jpg
-| victim             = Satomi Amari (deceased), Naoko Shimamura (treated in ICU)
+| location           = An all-you-can-eat sweet shop in Haido Town Royal Hotel
-| age                = 20-22 years old
+| victim             = Satomi Amari (deceased) and Naoko Shimamura (hospitalized)
-| cause-death        = Snake venom
+| victim-label       = Victims
-| cause-death-label  = Cause of injury?
+| age                = 21 years old (both victims)
-| suspects           = Naoko Shimamura, Kyoka Kasai, Ryuichiro Mita, and Shunsuke Yumemura
+| cause-death        = Poisoning using snake venom
+| cause-death-label  = Method
+| suspects           = Kyoka Kasai, Ryuichiro Mita and Shunsuke Yoshimura
 | description        = The two ladies began to writhe in pain and suddenly collapsed after consuming the drink, with one having passed away.
 }}
+Ran tries to contact [[Shinichi|Shinichi Kudo]] for help solving the case, while Ayumi calls [[Conan Edogawa|Conan]]. However, Conan (as well as Shinichi) couldn't hear the calls because he had left both of his phones elsewhere so that he can focus on fishing with [[Hiroshi Agasa|Professor Agasa]]. With no help from either Conan or Shinichi, the girls will have to solve the case on their own.
+The girls decide to ask the people nearby, along with local police. Kyoka Kasai is the first to be asked; she is a sociology student at Haido Women's College who works here as her part-time job. In fact, Naoko Shimamura and Satomi Amari are both at Haido Town Royal Hotel to visit Kasai upon knowing she works there, which explains why she is crying over Amari's death. Moreover, Kasai states that both were such good and earnest individuals that no one hates them at all. Ryuichiro Mita is the second to be on-screen; he is an office worker at Haido Brotherhood Company. He knows Shimamura because he once saw her in his company, but was not sure if she was applying or not.
+Shunsuke Yoshimura is the third one on-screen; he is a municipal worker. It is worth noting that Ayumi has asked both Mita and Kasai what sweet they like before their respective interrogation ends, and she does the same with Yoshimura. This time, his answer is not delivered as smoothly as the two previous, and he also shows strange expressions upon seeing a piece of skin found at the scene. Both things prompt the girls to ask Yoshimura again. From there, we learn that he works as a snake hunter, and was afraid of being convicted for murder if he revealed to them about the skin. On a side note, the cause of poisoning is revealed to be snake venom. What a coincidence!
+Moments later, Kasai reaches out to the girls to confess that she herself is knowledgeable about snakes, as she is working very hard to become an underground snake charming idol. Kasai also notes that the snake she has for training, Kobu, has had its fangs removed so that Kobu can bite her all day and she’ll be just fine!
+After reviewing the information they’ve just gathered, Ayumi proposes using their imagination to figure out who poured the poison, which further confirms that anyone ''could be'' the culprit. Just then, Ran’s statement helps Haibara realize something, as she then asks the two police officers to confirm a few things.
 === People ===
 {{BeginBox}}
 {{People|Satomi Amari|Satomi Amari.jpg|
-* 20-22 years old
+* Victim (poisoned)
-* Deceased (poisoned)
+* 21 years old
-* Sociology student at the Haido Women’s College
+* Sociology student at Haido Women's University}}
-}}
 {{People|Naoko Shimamura|Naoko Shimamura.jpg|
-* 20-22 years old
+* Victim (poisoned-injured)
-* Victim (poisoned)
+* 21 years old
-* Sociology student at the Haido Women’s College
+* Sociology student at Haido Women's University}}
-}}
 {{People|Kyoka Kasai|Kyoka Kasai.jpg|
 * 21 years old
-* Sociology student at the Haido Women’s College
+* Sociology student at Haido Women's University
-* Snake charming apprentice
+* Haido Town Royal Hotel part-timer
-}}
+* Underground snake charmer idol}}
 {{People|Ryuichiro Mita|Ryuichiro Mita.jpg|
 * 44 years old
-* Office worker at the Haido Brotherhood Company
+* Pharmaceutical researcher at Haido Brotherhood Company}}
-}}
+{{People|Shunsuke Yoshimura|Shunsuke Yoshimura.jpg|
-{{People|Shunsuke Yumemura|Shunsuke Yumemura.jpg|
 * 32 years old
-* Municipal officer
+* City hall worker
-* Part-time snake removal
+* Snake hunter}}
-}}
+{{People|[[Sora Tsujino]]|Sora Tsujino.jpg|
+* 23 years old
+* Tokyo MPD police officer}}
+{{People|[[Yukio Kashima]]|Yukio Kashima.jpg|
+* 25 years old
+* Tokyo MPD police officer}}
+{{People|Police officer|EP1186 Officer.jpg|
+* Tokyo MPD police officer}}
 {{EndBox}}
 === Resolution ===
-<spoiler></spoiler>
+<spoiler>
+Haibara’s theory: Since the statement of medicines being less effective the more you use them also applies to poison, Haibara suggests that '''Naoko Shimamura''' repeatedly ingests snake venom. Hence, she has enough tolerance to survive doses that usually kill a human.
+It is also revealed that Satomi Amari once insulted the snake Naoko Shimamura bred half a year ago during an argument. The police also received information that Shimamura had gotten away from the hospital. This further supports the suspicion that Shimamura became upset and waited for an opportunity to seek revenge.
+However, it is unclear why the girls and the two officers end up surrounded by snakes. Suddenly, Kyoka Kasai, Ryuichiro Mita, and Shunsuke Yoshimura come to the rescue. Kasai had overheard that Shimamura had disappeared from the hospital and thought she must have come to the current location, so she called the other two for assistance. Just as the case seems to be over, a black, seemingly venomous snake bites Sonoko. But it turns out that the snake is not even venomous, and Sonoko faints, thinking that a venomous one bit her.
+</spoiler>
 == Trivia ==
+* The "challenge" to poison the holy grail is a reference to ''[[Wikipedia:Indiana Jones|Indiana Jones]]''.
+* This is the last episode that the third [[Eyecatch|door eyecatch]] is used.
+* The fish Conan caught in the episode were the following: An [[Wikipedia:Ostracion immaculatum|immaculate boxfish]], a [[Wikipedia:Aluterus scriptus|scrawled filefish]] (which Conan thought was a [[wikipedia:Stephanolepis cirrhifer|thread-sail filefish]]), a [[wikipedia:Canthigaster rivulata|brown-lined puffer]] (which Agasa thought was [[wikipedia:Triacanthus biaculeatus|blacktail tripodfish]]), and a [[Wikipedia:Marbled flounder|marbled flounder]]. All of which, except the last one, are venomous.
+* The sweets mentioned are [[wikipedia:Mont Blanc (dessert)|Mont Blanc]] with [[wikipedia:Tambaguri|Tamba chestnuts]], [[wikipedia:tarte Tatin|tarte Tatin]] with [[wikipedia:Shine Muscat|Shine Muscat]] and [[wikipedia:Kyoho (grape)|Kyoho]] grapes and Griotte-Pistache tart (made with [[wikipedia:Prunus cerasus|tart cherries]] and [[wikipedia:Pistachio|pistachios]]).
+* Haido University is modeled after [[wikipedia:Rikkyo University|Rikkyo University]], which was featured in [[The Ranpo Mansion Murder Case]].
 == Gallery ==
@@ Line 99: / Line 122: @@
 == In other languages ==
-<!-- {{BeginTable EpLang}}
+{{BeginTable EpLang}}
-{{EndTable}} -->
+{{EpLangItem|flag=France|French (Subbed)|Une enquête entre filles 4 (quatre)|Girls' investigation 4}}
+{{EpLangItem|flag=Germany|German (Subbed)|Mädels-Klub-Mystery 4|Girls Club Mystery 4}}
-== References ==
+{{EpLangItem|flag=Thailand|Thai|เหล่าเด็กสาวผจญปริศนา 4|The Mystery-Solving Girls 4}}
-{{reflist}}
+{{EndTable}}
 == See also ==