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
Kenkojuku shuto uke / shuto uchi (known as Seiryuto uke /uchi). The Mawashi geri or round kick is performed in a slight downward angle. Within the style´s katas; these show better relationship / linkage patterns between the various movements between basic - intermediate and advanced katas. The kata Niseishi (Chito Ryu version) is included in the Dan grade syllabus instead of Nijūshiho, as well as other katas from another styles such as Goju Ryu); In the kata Bassai, the "yama tsuki" is performed in a shorter arc. Finally, the style´s free fighting position is similar to a crouching lunge position holding