1950

Entered Shoto-kan and started Karate practice. Later, studied under Seiken Shukumine from Okinawa.

1953

Opened Karate club in Self Defense Force Tachikawa Garrison and other five classes.

1959

Started Gensei-kan Oizumi Dojo in Nerima ward, Tokyo

1962

Started propagation of Gensei-ryu and established Gensei-ryu Butoku-kai on the occasion that his master Iwamine started Japan Taido.

1965

Opened the general head Dojo in Asaka city, Saitama prefecture and devote himself to study and instruct Gensei-ryu.