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Family[]
Although he often teases her, he still deeply cares for her. Despite occasional quarrels, they truly love each other and Yusaku fully supports Yukiko on her connections with the film industry after her retirement.
Shinichi is his son and learns detective work from him. Yusaku began taking Shinichi to crime scenes as soon as Shinichi was 7 years old. Overall, Yusaku is a better detective, both from his experience and his astute observations that Shinichi sometimes misses. Yusaku fully supports Shinichi's goal and gives him the needed independence to solve cases, only dropping hints or stepping in when it is absolutely necessary. Although Yusaku and Yukiko left their son in Japan 3 years ago when they moved to America, they still supported him financially and occasionally came back to Japan to check their son's well being.
When Shinichi shrunk into Conan, Yusaku staged a fake kidnapping scheme with Yukiko and Professor Agasa to make Shinichi realize the danger of the organization Shinichi was trying to investigate. He offered to bring Shinichi to America, which Shinichi refused. Since then, he still acted the same way towards Conan as before and limited his involvement with Black Organization, only helping his son on a single case by disguising as Subaru Okiya to fool Tooru Amuro.
Toichi and Yusaku are twin brothers. His parents divorced when he was young. Their mother took Yusaku with her as her maiden name, and his older brother Toichi went to live with their father as his real surname. According to Yusaku, he and Toichi haven't seen each other in 20 years. After Yusaku won the novel award after the Scarlet Series, Toichi gave him a sword as a gift. Toichi is alive until this moment, and they are currently in contact. The two often competed with each other when Toichi bared the identity of Kid the Phantom Thief. They sent each other cards with an "!" from Yusaku and a "?" from Kid.
Kaito is Yusaku's nephew, he is probably aware of the identity of the current Kid the Phantom thief and even stated that he wished to gift him a copy of his novel.
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| Karasuma Group | Renya Karasuma • Atsushi Miyano • Elena Miyano |
|---|---|
| Suzuki Group | Ayako Suzuki • Jirokichi Suzuki • Shiro Suzuki • Sonoko Suzuki • Tomoko Suzuki |
| Tomizawa Group | Taichi Tomizawa • Tatsuji Tomizawa • Tetsuharu Tomizawa • Yuzo Tomizawa |
| Lupin III | Goemon Ishikawa XIII • Daisuke Jigen • Arsène Lupin III • Fujiko Mine • Koichi Zenigata |
|---|---|
| Magic Kaito | Saguru Hakuba • Akako Koizumi • Konosuke Jii • Chikage Kuroba • Kaito Kuroba • Toichi Kuroba • Keiko Momoi • Aoko Nakamori • Ginzo Nakamori • Kaitou Corbeau • Kaitou Kid • Saguru Hakuba's Assistant • Akako Koizumi's Assistant • Magic Kaito Organization Boss • Magic Kaito Organization Sub-Boss • Lucifer • Rose • Snake • Spider |
| Yaiba | Kenjuro Kurogane • Yaiba Kurogane • Raizo Mine • Sayaka Mine • Shizuka Mine • Musashi Miyamoto • Keiko Momoi • Soshi Okita III • Soshi Okita VI • Takeshi Onimaru • Kagetora • Shonosuke |
| Guardians | Hiroshi Agasa • Sumiko Kobayashi • Rumi Wakasa |
|---|---|
| Members | Conan Edogawa • Ai Haibara • Genta Kojima • Mitsuhiko Tsuburaya • Ayumi Yoshida |
| Executive Agents | Renya Karasuma • Gin • Pisco • Rum • Vermouth |
|---|---|
| Codenamed Agents | Calvados • Chianti • Korn • Tequila • Vodka |
| Agents | Rikumichi Kusuda • Akemi Miyano • Atsushi Miyano • Elena Miyano • Ki'ichiro Numabuchi |
| Undercover Agents | Ethan Hondou • Bourbon • Kir • Scotch |
| Former Agents | Rye • Sherry |
| Others | Antonio Gomez • Yoshiaki Hara • Kate Lauren • Masaaki Okakura • Black Beard • Aquavit • Arrack • Curaçao • Generic • Irish • Riesling • Stout |
| CIA | Ethan Hondou • Hidemi Hondou • Barney |
|---|---|
| FBI | Shuichi Akai • James Black • Andre Camel • Jodie Starling • Starling Family Father • Aaron • Bill • Cheng • Hodges • Ishida • Jeff • Jim • Meyer • Tim • Tony |
| MI6 | Tsutomu Akai • Mary Sera |
| NPA & PSB | Rei Furuya • Yuya Kazami • Hiromitsu Morofushi |
| Tokyo Metropolis | Shintaro Chaki • Kazunobu Chiba • Wataru Date • Kenji Hagiwara • Hyoue Kuroda • Jinpei Matsuda • Kiyonaga Matsumoto • Juzo Megure • Naeko Miike • Yumi Miyamoto • Ginzo Nakamori • Toshiro Odagiri • Miwako Sato • Ninzaburo Shiratori • Wataru Takagi • Tadayoshi Uno • Officer Tome • Officer Tsujimura • Inspector Yuminaga |
| Nagano Prefecture | Taka'aki Morofushi • Yui Uehara • Kansuke Yamato |
| Osaka Prefecture | Heizo Hattori • Goro Otaki • Ginshiro Toyama |
| Others | Fumimaro Ayanokoji • Leona Buccholz • Radish Redwood • Chosuke Takagi • Misao Yamamura • Jugo Yokomizo • Sango Yokomizo • Koichi Zenigata • Aquavit • Stout |