Kotō-ryū

Kotō-ryū (虎倒流) is a school of Japanese martial arts that specialises in koppōjutsu (骨法術). Kotō-ryū was founded by Sakagami Tarō Kunishige (坂上太郎国重) in the Muromachi period (1392–1573), originating from Gyokko-ryū. The sōke title was claimed to be passed down to Yukio Noguchi from Masaaki Hatsumi (1931-) who received it from Toshitsugu Takamatsu (1889-1972).

In film and popular culture
In the video game Judgment (video game) Kotō-ryū is used by the main antagonist Mitsuru Kuroiwa