Traditional Okinawa Goju Ryu Karate and Kobujutsu in Kenshikai Attitude According to Dr. Hokama Tetsuhiro Heinrich Bttner was born in Bamberg, Bavaria and began his training in Karate 1974 and has continued training ever since. He first travelled 1997 to Okinawa where he meet his Kobudo teacher Gakiya Yosiaki. After training with Dr. Hokama he decided to refocus on learning Okinawan Goju-Ryu Kenshikai instead, which represents the older methods.