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Osamu Yano
Osamu Yano — Sumiyoshi-kai-linked gang leader arrested in connection with the Takashi Ishizuka murder case.
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66 public profiles · Japanese
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Rikio Ishikawa
Rikio Ishikawa — Notorious postwar gangster whose life inspired Graveyard of Honor.
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Ryoji Kawaguchi
Ryoji Kawaguchi — Senior Sumiyoshi leader and chairman in the late 1980s.
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Satoru Nomura
Senior Kudo-kai leader whose prosecution became a landmark in Japanese organized-crime enforcement.
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Seijiro Matsuo
Seijiro Matsuo — Second-generation leader of the Dojin-kai.
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Senkichi Kousaka
Senkichi Kousaka — Founder associated with the early Aizukotetsu-kai lineage.
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Shigeo Nishiguchi
Longtime top Sumiyoshi-kai leader and one of the best documented modern figures in the syndicate.
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Shinobu Tsukasa
Profile of Shinobu Tsukasa, born Kenichi Shinoda, whose rise through Kodo-kai reshaped Yamaguchi-gumi and preceded its historic 2015…
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Shuji Ogawa
Shuji Ogawa — Current-era chairman of the Sumiyoshi-kai.
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Susumu Arase
Susumu Arase — Modern leader of the Kyosei-kai.
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Tadamasa Goto
A profile of former Goto-gumi boss Tadamasa Goto and the extraordinary controversy surrounding his FBI-assisted U.S. entry and…
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Tadashi Irie
Second-generation Takumi-gumi boss and long-serving Yamaguchi-gumi executive.
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Tadashi Masaki
Tadashi Masaki — Boss of Masaki-gumi and one of the affiliate leaders tied to the 2015 Yamaguchi-gumi split.
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Takao Nishida
Takao Nishida — Boss of a Sumiyoshi-kai affiliate killed in Gunma in 2003.
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Takashi Ikeda
Ikeda-gumi leader whose organization moved from Yamaguchi-gumi to Kobe Yamaguchi-gumi and later independence.
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Takashi Ishizuka
Takashi Ishizuka — Sumiyoshi-kai affiliate boss murdered while under police guard in 2002.
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Taro Nakano
Taro Nakano — Senior Yamaguchi-gumi affiliate boss associated with the Nakano-kai.
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Tatsuo Deguchi
Tatsuo Deguchi — Noted twentieth-century Inagawa-kai figure, also known by the nickname 'Moroccan Tatsu'.