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 Seung-min Ma Lin and Wang Hao, Ryu never uses the backside of his blade – in fact, he does not even have rubber on it. Ryu relies on his outstanding footwork, explosive forehand loops and drives to win points. For some time he used Xiom (South Korea) table paddles and rubbers playing with his signature model "Ryu Seung Min Special" penhold and has been using ProZRSM ever since his victory at the 2004 Summer Olympics. Lately he switched again to Butterfly (Japan) equipment and now he uses their Ryu Seung-min G-Max blade with Tenergy 05. As of December 1, 2012 he