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 Shiva poetry has been seen as a genre where it’s not the works that approach the public, but the public must take effort to approach the work, and Ryu Shiva’s works have been criticized as belonging to the former. Ryu Shiva’s works have been alienated by the literary circle and literary journals. Meanwhile, Ryu Shiva’s books continue to be popular among the public. "Geudaega gyeot-e itseodo naneun geudaega geuripda" (그대가 곁에 있어도 나는 그대가 그립다 Even Though You Are Next To Me I Miss You) was on the best seller list 21 times between 1989 and 1998, and in a survey