Ki'ichiro Numabuchi

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Ki'ichiro Numabuchi

Kiichiro Numabuchi Profile.png

Japanese name: 沼淵 己一郎
(Numabuchi Kiichirō)
English name: Cornelius Graver
Age: unknown
Gender: Male
Relatives: Mrs. Numabuchi (mother, deceased)
Maternal grandfather (deceased)
Maternal grandmother (deceased)
Occupation: Serial killer
Black Organization member
Status: Awaiting execution
First appearance: Manga: File 187
Anime: Episode 118
Appearances: Chapters: 7
Episodes: 4
Japanese voice: Naoki Tatsuta
English voice: Barry Yandell

Ki'ichiro Numabuchi (沼淵 己一郎 Numabuchi Kiichirō?), known as Cornelius Graver in the Funimation dub, is a Black Organization member.


Ki'ichiro twenty years ago.

Ki'ichiro Numabuchi, who grew up in Nakanojō, Gunma Prefecture[1], was a serial hold-up murderer who got involved with the Black Organization. He was originally hired to become one of their assassins, but his mental instability soon exempted him from that career. Instead, he was to become a human guinea pig for the new APTX 4869 poison, under the supervision of Shiho Miyano. However, while Sherry had been given his file for close medical study, she didn't get to meet him personally. Knowing about his impending fate, he escaped the organization. During his flight in the Tohoku, Kanto, and Kinki regions in three consecutive days, he panickedly murdered three people he suspected of being the organization's pursuers.[2]

In his younger years, before becoming a murderer, he and his four fellow classmates from Osaka driving school caused the death of their stern driving instructor. Twenty years later, his son, who had become a Tojiri police officer to investigate his father's death, caught him, who blabbered out a confession. Since his father's death case was long since time-barred, he decided to murder all those responsible, keeping him for last in order to put the blame on him. However, Conan and Heiji cracked the case, and he was taken into custody by the Osaka police.[3]

Several months later, he was escorted into Nakanojō forest in Gunma after having claimed that the body of a fourth victim was buried there. Actually, he intended to pay a last visit to his special childhood friends, the fireflies, living in the forest before his execution. There he met Mitsuhiko, who was attempting to collect some fireflies in order to rejoice his friends Haibara and Ayumi. Instead of doing him any harm, however, he carried Mitsuhiko back to the search parties and had himself arrested without putting up any resistance.[4]


While he may be cast as a psychotic serial killer, in the series he appears more like a frightened victim. While he may kill without hesitation, he does it mostly out of fear and to regain his freedom. He is shown to have a more sensitive side and a fondness for children when he rescues Mitsuhiko from an ill-fated attempt to present his crushes Ayumi and Haibara with a special surprise.[1]


Plot overview

Stabbed Wallet Case (Manga: 187-188, Anime: 118)

Disappearing Mitsuhiko Case (Manga: 358-360, Anime: 289-290)

He reveals to the police that he had killed a fourth person and buried the body in the wooded mountains of Gunma. He is taken to the site under the supervision of Yamamura and the Gunma prefectural police to look for the remains. He sees a moment where Yamamura's focus wavered and seizes the opportunity to escape from custody. Coincidentally, Mitsuhiko has also entered the forest in search of fireflies, not knowing a serial killer is also loose in the area. The Detective Boys, who followed Mitsuhiko's trail, arrive and join forces with Yamamura to reunite with Mitsuhiko and capture Numabuchi. While on the search, Haibara informs Conan that the organization originally hired him to be one of their assassins. However, due to his unstable mental state, he was transferred to Haibara's division, where he was to be a test subject for the APTX 4869. He later escaped from the organization and proceeded to commit various crimes. He eventually finds Mitsuhiko, but safely returns him to his friends before he is compliantly arrested by the authorities. Conan states that he likely lied about his fourth victim and instead wanted to come to the mountain, a place of his childhood, so that he could see the fireflies one last time before his eventual execution.

Footsteps of Darkness (Manga: 377, Anime: 307)

Kazuha's Charm Case (Manga: 693, Anime: 573)

Different looks

Episode 118

In other languages

Language Given Name Family Name
Flag of Japan Japanese 己一郎 Kiichirō 沼淵 Numabuchi
Flag of Arab League Arabic Not given نومابوشي Nōmābōshi
Flag of Indonesia Bahasa Indonesia Kiichiro Numabuchi
Flag of US English Cornelius Graver
Flag of France French Kiichiro Numabuchi
Flag of Italy Italian Kiichiro Numabuchi
Flag of North KoreaFlag of South Korea Korean 원일 Won Il 김 Kim
Flag of Thailand Thai คิอิจิโร่ นุมาบุจิ


  1. ^ a b Anime episode 289.
  2. ^ Manga volume 35, file 360; anime episode 290.
  3. ^ Manga volume 19, file 185-188; anime episode 118.
  4. ^ Manga volume 35, file 358-360; anime episode 289-290.

See also

Black Organization
High ranking The BossRumGinVermouth
Other agents VodkaKir (undercover) • ChiantiKornBourbon (undercover)
Deceased agents Akemi MiyanoTequilaKenzo Masuyama/PiscoAtsushi MiyanoElena MiyanoCalvadosRikumichi KusudaEthan Hondou (undercover) • Hiromitsu Morofushi/Scotch (undercover)
Former agents Shiho Miyano/Sherry (Ai Haibara) • Shuichi Akai/Dai Moroboshi/Rye (undercover) • Ki'ichiro Numabuchi
Extended canon Yoshiaki Hara (movie only) • Irish (movie only) • Masaaki Okakura (movie only) • Arrack (special manga only) • Generic (special manga only) • Blackbeard (special manga only) • Kate Lauren (playstation only) • Curaçao (movie only) • Stout (movie only) • Aquavit (movie only) • Leona Bucholz/Riesling (movie only) • Man in bar (tv special only) • Pinga (movie only)
Related articles Black Organization timelineAPTX 4869Nanatsu no KoScar AkaiList of Black Organization related charactersVermouth timelineSuguru ItakuraKohji Haneda caseKarasuma Group"The Criminal"Night BaronCrow
Manga Roller Coaster Murder Case¥1,000,000,000 RobberyBullet-Train BombingGame Convention CaseMissing Older Brother CaseMurdered Professor CaseHotel Party Murder CaseBus Hijacking CaseKaitou Kid and the MurderEscalator Message CaseGolden Apple CaseFootsteps of DarknessMeeting with VodkaFour Porsches CaseBathroom Murder CaseHalloween Party CaseBlack Organization vs. FBIMysterious Job CaseKir Transport CaseForeign Suspect CaseDepartment Store Bomber CaseOnline ClientMystery TrainTennis MeetupA Shrine to RememberElementary Teacher AssaultScarlet ShowdownGirls Band Murder CaseSoul Detective Murder CaseA song named ASACAMissing Maria Higashio CaseSisters' Birthday Party Murder CaseYusaku Kudo's TV Show CaseFBI Serial Murder CaseAkemi Miyano's Time CapsuleChess Tournament Murder Case
Anime Roller Coaster Murder CaseGame Company Murder CaseThe Black Organization: One Billion Yen Robbery CaseThe Girl from the Black Organization and the University Professor Murder CaseReunion with the Black OrganizationThe Gathering of the Detectives! Shinichi Kudo vs. Kaitou KidThe Mysterious PassengerThe Secret Rushed OmissionShinichi Kudo's New York CaseOn the Trail of a Silent WitnessContact with the Black OrganizationThe Four PorschesHidden Bathroom SecretHead-to-Head Match with the Black Organization: A Dual Mystery on a Full Moon NightBlack Impact! The Moment the Black Organization Reaches OutThe Shadow of the Black OrganizationClash of Red and BlackThe Crisis Beckoned by the Red OmenDetectives' NocturneThe Jet-Black Mystery TrainConan in a Locked RoomJodie's Memories and the Cherry Blossom Viewing TrapThe Scarlet ReturnThe Shadow Approaching Amuro (TV original) • The Unfriendly Girls BandThe Spirit Detective's MurderThe Betrayal's StageSearch for Maria-chan!The Birthday Party of Divine PunishmentYusaku Kudo's Detective ShowThe Black Organization's SchemeAkemi Miyano's Time Capsule
Movies and Specials Countdown to HeavenTime Travel of the Silver SkyBlack HistoryThe Raven ChaserShinichi Kudo Returns! Confrontation with the Black OrganizationThe Darkest NightmareBlack Iron Submarine
Special Manga The Wish Put on the AirshipThe Black Organization...RevealedProtect the Luxury Liner from the Virus
Playstation Remembrance Treasure Case
Main Characters
Protagonists Shinichi KudoConan EdogawaRan MouriKogoro Mouri
Detective Boys Ai HaibaraAyumi YoshidaMitsuhiko TsuburayaGenta Kojima
Family & Friends Hiroshi AgasaSonoko SuzukiEri KisakiYusaku KudoYukiko KudoHeiji HattoriKazuha ToyamaYoko OkinoSumiko KobayashiTomoaki AraideMakoto KyogokuShizuka HattoriJirokichi SuzukiEisuke HondouAzusa EnomotoSubaru OkiyaMasumi SeraShukichi HanedaSakurako YoneharaRumi WakasaMomiji OokaMuga Iori
Tokyo Metropolitan Police District Juzo MegureWataru TakagiMiwako SatoNinzaburo ShiratoriYumi MiyamotoKazunobu ChibaNaeko MiikeKiyonaga MatsumotoInspector YuminagaShintaro ChakiHyoue KurodaKenji HagiwaraJinpei MatsudaWataru Date
Osaka Police District Heizo HattoriGinshiro ToyamaGoro Otaki
Nagano Police District Kansuke YamatoYui UeharaTaka'aki Morofushi
Other police districts Sango YokomizoMisao YamamuraJugo YokomizoFumimaro Ayanokoji
NPA and Public Security Bureau Rei Furuya (Bourbon)Hiromitsu MorofushiYuya Kazami
FBI Shuichi AkaiJodie StarlingJames BlackAndre Camel
CIA Hidemi Hondou (Kir)Ethan Hondou
MI6 Mary SeraTsutomu Akai
Black Organization The BossRumGinVodkaVermouthChiantiKornShiho MiyanoAkemi MiyanoElena MiyanoAtsushi MiyanoTequilaPiscoCalvadosRikumichi KusudaKi'ichiro Numabuchi
Magic Kaito Kaito KurobaKaitou KidAoko NakamoriGinzo NakamoriToichi KurobaChikage KurobaKonosuke JiiKeiko MomoiAkako KoizumiSaguru HakubaSnakeRose (OVA only) • Saguru's HousekeeperSpider (TV special only)
Others "The Criminal"Hideo AkagiRyusuke HigoTakahiro SanadaScar AkaiKohji HanedaKamen YaibaAmanda Hughes