The is a yakuza organization based in Fukuoka Prefecture on the Kyushu island of Japan, with an estimated 60 active members.
History The Taishu-kai was formed around 1954 under the name by , a mineworker who became the first president. The Ota Group was later renamed the , and again renamed the "Taishu-kai" in May 1973. Yoshihito Tanaka (or Yoshito Tanaka) succeeded Ota in December 1991."1993 Police White Paper Chapter 1 : The Actual Condition of the Boryokudan", 1993, National Police Agency
Condition Headquartered in Tagawa, Fukuoka,"Boryokudan Situation in 2010" , April 2011, National Police Agency the Taishu-kai is one of the five independent Fukuoka-based designated yakuza syndicates, along with the Kudo-kai, the Dojin-kai, the Fukuhaku-kai and the Kyushu Seido-kai."Police of Japan 2011, Criminal Investigation : 2. Fight Against Organized Crime" , December 2009, National Police Agency
The Taishu-kai is a member of an anti-Yamaguchi-gumi fraternal federation, the "Yonsha-kai", along with the Kitakyushu-based Kudo-kai, the Kurume-based Dojin-kai and the Kumamoto-based Kumamoto-kai.The Sixth Yamaguchi-gumi Complete Databook 2008 Edition : "The funeral of the Fourth Kudo-kai Honorary Adviser Hideo Mizoshita" (p.192–197), 1 February 2009, Mediax,
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