The is a yakuza organization based in Fukuoka Prefecture on the Kyushu island of Japan, with an estimated 70 active members.[1]
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.[2]
Headquartered in Tagawa, Fukuoka,[3] 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.[4]
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.[5]