Education
In 1966 he graduated from Ryukoku University in Kyoto and entered the Instructor School of the Japan Karate Association, graduating in 1968.
In 1966 he graduated from Ryukoku University in Kyoto and entered the Instructor School of the Japan Karate Association, graduating in 1968.
He moved to the United States in 1972. In June 2007, the made the decision to leave the JKA. Yaguchi continued his affiliation with the, however, the other founding Masters decided to remain with the JKA and formed the JKA World Federation - America (JKA/WF). Takashina"s perspective on this difficult transition is published.
Under Teruyuki Okazaki, Takashina was a founding member of the International Shotokan Karate Federation along with Takayuki Mikami, Yutaka Yaguchi and Shojiro Koyama.