The Taishu-kai was formed around 1954 under the name "Ota Group" (太田グループ Ōta Gurūpu?) by Kuniharu Ota (太田 州春 Ōta Kuniharu?), a mineworker who became the first president. The Ota Group was later renamed the "Ota-gumi" (太田組 Ōta-gumi?), and again renamed the "Taishu-kai" in May 1973. Yoshihito Tanaka (or Yoshito Tanaka) succeeded Ota in December 1991.
Headquartered in Tagawa, Fukuoka, 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.
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.
- 1st: Kuniharu Ota
- 2nd: Yoshi(hi)to Tanaka
- 3rd: Raitaro Oma
- 4th: Hiroshi Hidaka
- "Boryokudan Situation in 2010", April 2011, National Police Agency (Japanese)
- "1993 Police White Paper Chapter 1 : The Actual Condition of the Boryokudan", 1993, National Police Agency (Japanese)
- "Police of Japan 2011, Criminal Investigation : 2. Fight Against Organized Crime", December 2009, National Police Agency
- 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, ISBN 978-4-86201-358-3 (Japanese)