Kenkojuku student of Gichin Funakoshi. He was a member of Funakoshi's karate association the Dai Nihon Karate-do Shotokai. In 1942, Okano was given permission to start a karate research club named Kenkokai Karate-bu in his hometown of Hachiōji, Tokyo. The club was started with the help of Suzuki Shinjo, Kaneko Isamu and Takagi Yoshitomo. He renamed the dojo Kenkojuku Budokan in 1948. Okano's karate was influenced by both Gichin and Gigo Funakoshi, and eventually this branch of Shotokan became known as Kenkojuku Shotokan. He retained the Shotokai lineage as well as the name Shotokan. Okano was on the panel of Masters
Tenshinsho Jigen Ryu dharma name, Zenkitsu (善吉, also read Zenkichi). He was the chief Buddhist priest of the Tennji Temple near Kyoto. Although his life was short lived he did manage to pass on the Tenshinsho Jigen Ryu to Togo Shigekata (東郷 重位, 1560- 1643), a samurai from the Satsuma domain, who after 3 years of having returned to Satsuma synthesized the Tenshinsho Jigen Ryu with the Taisha Ryu to create the Jigen Ryu. According to tradition, the Tenshinsho Jigen Ryu would remain a well-kept secret through the Jigen Ryu and Yakumaru Jigen Ryu lines, and passed down through a series of dai