Sensei Tani started his formal Karate training under Miyagi Chojun, founder of Goju, whilst a student at Doshisha University, Kyoto. After some years, Miyagi Sensei returned to Okinawa and Sensei Kenwa Mabuni, founder of Shitoryu took over the teaching. In deference to his friend, whom he had assisted on his arrival in Japan, Mabuni Sensei only taught Naha-te at the university karate club. On graduation from university Sensei Tani followed Mabuni learning first the Shuri-te system and then ultimately the developing Shitoryu system. After many years of training under Mabuni as one of his most senior students, Sensei Tani received the certificate of succession, entitling him to use the name Tani-ha Shitoryu (the Tani sect of Shitoryu). In 1949 Sensei Tani, whilst still a high school teacher, founded his own school, which he called Shukokai. On the death of Mabuni Kenwa, in 1952, many of the senior students went their own way and at this time Tani Sensei adopted the name bestowed by Mabuni, Tani-ha Shitoryu, and with two other senior students, Fujiwara and Fujitani, began creating the world wide system, for which he is now so respected. Fujiwara Sensei died some years ago and Fujitani Sensei now heads his own organization called Myobukai. Shukokai has been taught outside Japan mainly by three senior instructors, Kimura, Nanbu and Suzuki, between them assisting in the creation of a world wide recognition and respect for their style.
Chief Technical Master of Shukokai was Shigeru Kimura, 8th Dan. Sensei Kimura commenced karate at the age of 16 under Sensei Tani. At 21 he won the All Japan Shito ryu Championship, and after winning that title for the second time in 1964, ceased participating in championship Karate to devote his life to developing the style of Karate how known and respected throughout the world as SHUKOKAI. Sensei Kimura died in 1997.