Chiba Tsugutaka Sensei, head of the Daito-ryu Shikoku Hombu (https://daitoryu-shikoku-hombu.com/) explaining Ikkajo Ippondori during a seminar in Wakimachi (Shikoku). Chiba Tsugutaka (1931 – 2017) was the student of Nakatsu Heizaburo and he also learned from Hisa Takuma and Takeda Tokimune. He was honorary director of the Takumakai, and the head of the Daito-ryu Shikoku Honbu.