San Juan Shotokan/Shoshin Karate is JKA karate in the tradition of Masters Funakoshi and Nakayama. Sensei David Johnston, 7th dan, studied under Kanazawa, Enoida, and Yaguchi, and was formerly technical director of the AJKA. Classes are intense and challenging as well as compassionate, and designed to help each student reach his or her full potential.