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 clan of Munhwa and service King Taejo rewarded Ryoo with estates and the title "helper in great victory" (대승공; 大丞公). Until recently, it was thought that the Cha clan (차; 車) shared the same lineage as the Munhwa Ryoo clan. However, historians have proven that this was in fact an error. There are around 300,000 individuals in the clan.The clan is further divided into many smaller branches that were founded by people of Korean historical significance. The progenitor of Munwha Ryu clan Ryu Cha Dal on the sport light in North Korea Historical Novel on Ryu Cha Dal Published, (North) Korean Central News