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
Ryu Hayabusa in his battle against Black Spider clan leader Genshin, who then attempts multiple times to kill Ryu thereafter but fails and is slain in his final attempt despite Elizébet having transformed him into one of the game's sub-bosses, the Four Greater Fiends. Before he dies, Genshin gives Ryu a sword called the "Blade of the Archfiend", which Ryu needs to complete his mission. Following the demise of the three other Greater Fiends, Ryu kills Elizébet and Vazdah with both the blade and his own Dragon Sword. At the conclusion, he uses the Archfiend's sword to mark Genshin's gravesite in a