Chairman Tsuyoshi Hiroshige
Born in Kitakyushu city, Fukuoka prefecture. Concious of the spiritual world since childhood, he then developed an aspiration towards martial arts. An active handball player in his childhood.
 Appointed at Honda Motor Co., Ltd. in 1966. Later on, he changed jobs at 3 companies and even worked abroad in Algeria before becoming an apprentice of sosai Oyama.

 1973, at the age of 25, entered Kyokushinkakan honbu dojo. After that, he became an apprentice there. Despite his late debut in the All Japan Open Tournament when he was 28 years old, he acquired 3 consecutive awards from the 9th through 11th championships and even fought at a world tournament.  
Upon becoming Jonan branch chief, by means of training method based on his own mindset and teaching method that develops students' individual traits, chairman Hiroshige brought up 3 world champions and 10 All Japan Open and weigh category champions, writing his name in kyokushin history as a prominent instructor.
 Despite his appointment as vice president of Kyokushin Karate Organization Kyokushinkan in 2003, he established Kyokushin Karate Union Kenbukai due to differences in terms of the direction of the organization in February. 2017.