Hironori Otsuka starts Jujutsu training under his uncle Chojiro Ebashi in 1898. In the years 1910-1921, Otsuka trained in various Jujutsu Dojo’s in Tokyo. After 1922, Otsuka began to learn Karate under Gichin Funakoshi, Kenwa Mabuni and Choki Motobu. The style was named by Otsuka in 1939.
