Minoru Mochizuki trained directly under Gichin Funakoshi, the man who formally introduced Karate to the Japanese mainland in 1921.

In the 1970s, Minoru Mochizuki formally organised his arts into Yoseikan Budo, including Karate, aikido, judo, Tenshin Shoden Katori Shinto-ryu, jujutsu, kobudo, iaido, kendo, jojutsu, and kempo.

After some time, Hiroo Mochizuki developed his own style; he initially called it Yoken, but later he changed the name to Yoseikan Budo to honour his father.

All eventually received their Shodan (1st Dan) diplomas from Minoru Mochizuki and were all asked to consider setting up national federations for the development of Yoseikan in each of their own countries.

As a result, Vernon Bell redirected his efforts back towards the original Yoseikan Karate system he had learnt years earlier.

( For details of instructors affiliated & currently teaching for the Yoseikan Karate Association U.K, reference may be taken from the Dan grade teachers page of the official YKA web site ).

In that year, Phillipe Boiron began teaching Yoseikan Aikido for Jan de Jong in Perth, Western Australia.

In 1974, on an official request from de Jong, Mochizuki sent Yoshiaki Unno to Perth to teach Yoseikan Aikido.

On January 21, 1999, Masters Andre Bertrand, Jim Hartnell, Jacques A. Marleau and Michel Shaheen registered the name "Association Yoseikan-Ryu."