Founded by Yoshiaki Yamano in 1954 under the name "Shinsen-gumi" (新選組), it changed its name to "Yamano-kai" in 1956. Masatoshi Minoda succeeded as its president in 1972, and Tetsuo Ikeda became the president in 1986.
The group dissolved in April 2001. However, many of its members formed a new group, the Sanshin-kai, in September of that year.
The Yamano-kai was designated by the Japanese police as a bōryokudan group from December 1992 to November 2001.
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