| Kyosei-kai | |
| Founder: | Tatsuo Yamamura |
| Founding Location: | Hiroshima, Japan |
| Membership: | 120 |
| Leaders: | Atsumu Moriya |
The is a yakuza group based in Hiroshima, Japan.
The Kyosei-kai was formed in May 1964 from seven yakuza clans united by bakuto Tatsuo Yamamura.[1]
The Kyosei-kai is known for its history of fierce conflicts with various other yakuza groups, and therefore, the Kyosei-kai is thought to be most responsible for creating Hiroshima's "town of violence" image.[2] Notably the Kyosei-kai has been in conflict with the Yamaguchi-gumi, the largest yakuza syndicate, since the early 1960s.
The Kyosei-kai was a leading member of two anti-Yamaguchi federations, the Kansai Hatsuka-kai (formed in 1970) and the Nishinippon Hatsuka-kai (formed in 1989), and has formed a new anti-Yamaguchi federation named the Gosha-kai since 1996 with three other Chugoku-based organizations, the Kyodo-kai, the Asano-gumi, the Goda-ikka, and the Shikoku-based Shinwa-kai.
The Battles Without Honor and Humanity yakuza film series is based on actual 20th-century yakuza conflicts engaged in by Hiroshima yakuza syndicates, particularly the events leading up to the formation of the Kyosei-kai.[2]