The Asano-gumi was formed in 1945 as a bakuto organization named the Oyama-ikka (大山一家 Ōyama-ikka?) by Kunio Oyama. The group restarted as the Asano-gumi with the head of Shin'ichi Asano in April 1952 following Oyama's retirement. Yoshiaki Kushida succeeded as president in September 1983.
The Asano-gumi caused conflicts with the Yamaguchi-gumi and the Kyodo-kai in the late 20th century. In one notable case, Asano member(s) shot and murdered two Yamaguchi members in Kurashiki in 1987, as a retaliation for an earlier attack by Yamaguchi member(s) involving carving knives against two Asano members. One of the gunmen last name was Kyofuka, he was released and then rearrested in 2007. I was married to his brothers daughter who was also a member of the Asano-yamaguchi-gumi.
Since 1996, the Asano-gumi has been a member of an anti-Yamaguchi federation named the Gosha-kai, along with three other Chugoku-based organizations, the Kyosei-kai, the Kyodo-kai, the Goda-ikka, and the Shikoku-based Shinwa-kai.
- 1st (1952-1979): Shin'ichi Asano
- 2nd (1979-1983): Yoshio Hita
- 3rd (1983-2010): Yoshiaki Kushida
- 4th (2010-present): Fumiyasu Morita
- "Police of Japan 2011, Criminal Investigation : 2. Fight Against Organized Crime", December 2009, National Police Agency
- "2010 Police White Paper Chapter 2 : Furtherance of Organized Crime Countermeasures", 2010, National Police Agency (Japanese)
- "1993 Police White Paper Chapter 1 : The Actual Condition of the Boryokudan", 1993, National Police Agency (Japanese)
- "The Fourth Kyosei-kai", 20 February 2008, Matsue Joho Center (Japanese)