Director of KOKA

Shihan ( Director of KOKA )/ Kamitsuma Yusuke (8th Dan)
Sensei Kamitsuma is a former champion in Japan and who is chair of Oku-Juku Toride Ibaraki Japan. He is also a member of Japan Karate federation and Wado Ryu Karatedo Federation.
He coached many famous champions including Shina Shizuo (Male Kumite world champion) and Yuka Shimizu (female team kata champion).

Sensei Kamitsuma hopes that many people has access to Karate and he has extended his dojo connection to outside the Japan. He is now the chair of Kamitsuma Oku Karatedo Academy and he has dojo in Dubai, Sri Lanka, Bangladesh, Malaysia and Cambodia and all the class were led by his former students who are fully qualified.

Sensei Yoshinari (6th Dan)
Sensei Yoshinari is a member of Oku-jyuku in Japan and devoted his life to Karate and had been referees in important karate competitions in Japan. He taught Olympic commentator who is a former world champion 2004, 2006 Yuka Shimizu.His belief of working and teaching with children and family for karate influenced Masumi.