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: ?
Gender: Male
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 character in the manga and anime franchise Detective Conan.


Numabuchi 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 Shiho had been given his file for close medical study, she didn't get to meet Numabuchi personally; knowing about his impending fate, he escaped the Black Organization. During his flight, he panickedly murdered several people he suspected of being Black Organization pursuers.[2]

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

Several months later, Numabuchi 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.[4] 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, Numabuchi carried Mitsuhiko back to the search parties and had himself arrested without putting up any resistance.[5]


While he may be cast as a psychotic serial killer, in the series Numabuchi 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[edit]

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

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

Footsteps of Darkness (Manga: 377, Anime: 307)[edit]

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

In other languages[edit]

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 Episode 289: Mitsuhiko in a Forest of Indecision
  2. ^ Manga Chapter 360: Disappearing Mitsuhiko 3
  3. ^ Manga Chapters 185-188: Stabbed Wallet Case
  4. ^ In Japan, the death sentence is executed by hanging.
  5. ^ Manga Chapter 358-360: Disappearing Mitsuhiko Case

See also[edit]

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) • Antonio Gomez (shogakukan learning series 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)
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 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 BandSoul Detective Murder CaseThe Betrayal's StageSearch for Maria-chan!
Movies and Specials Countdown to HeavenTime Travel of the Silver SkyBlack HistoryThe Raven ChaserShinichi Kudo Returns! Confrontation with the Black OrganizationThe Darkest Nightmare
Special Manga The Wish Put on the AirshipThe Black Organization...RevealedProtect the Luxury Liner from the Virus
Playstation Foreign country building Town Murder case
Main Characters
Protagonists Shinichi KudoConan EdogawaRan MouriKogoro Mouri
Detective Boys Ayumi YoshidaMitsuhiko TsuburayaGenta KojimaAi Haibara
Family & Friends Hiroshi AgasaSonoko SuzukiEri KisakiYusaku KudoYukiko KudoHeiji HattoriKazuha ToyamaYoko OkinoSumiko KobayashiTomoaki AraideMakoto KyogokuShizuka HattoriJirokichi SuzukiEisuke HondouAzusa EnomotoSubaru OkiyaMasumi SeraShukichi HanedaSakurako Yonehara
Tokyo Metropolitan Police District Juzo MegureWataru TakagiMiwako SatoNinzaburo ShiratoriYumi MiyamotoKazunobu ChibaNaeko MiikeKiyonaga MatsumotoInspector YuminagaShintaro ChakiHyoue KurodaHiromitsu MorofushiYuya Kazami
Osaka Police District Heizo HattoriGinshiro ToyamaGoro Otaki
Nagano Police District Kansuke YamatoYui UeharaTaka'aki Morofushi
Other police districts Sango YokomizoMisao YamamuraJugo YokomizoFumimaro Ayanokoji
NPA Security Bureau Rei Furuya (Bourbon)
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) • Hakuba's HousekeeperSpider (TV special only)
Others "The Criminal"Hideo AkagiRyusuke HigoTakahiro SanadaScar AkaiKohji HanedaRumi WakasaMomiji OokaMuga IoriKanenori WakitaKamen YaibaGomeraNight BaronDetective Samonji