Koto Ryu Koppojutsu
Ri-Houtei of "To" (China) was an acclaimed female expert of Kosshi-jutsu, Hicho-jutsu and Senban-Nage-jutsu.
Ri-Houtei taught to Cho-Gyokko, also a woman, all of the martial arts. Cho was the pioneer of the Gyokko Ryu Kosshi-jutsu. Cho-Gyokko taught to Cho-Buren all of these martial arts. Cho-Buren taught to his son Cho-Busho (Ikai) all of the martial arts. After that, Cho-Buren became naturalized in the ancient kingdom of "Inn" within "To" (China).
In 663 September, a Son-Jinshi-Rigi who was the general of King Kyokurin ("Inn" Kingdom) fought in battle with "Kudara" (a part of ancient Korea). The king Jorei of Kudara was defeated and was forced to flee to "Korai" (a part of ancient Korea).
Military General (Shogun) Cho-Busho of "Kudara" evaded capture and fled to Japan (Iga area) with his followers. He was the expert of Kosshi-jutsu, Hicho-jutsu, Senban-Nage-jutsu, Naginata-jutsu, Toda-jutsu and Kankoku Juhakkei. He diffused these martial arts to Japan. The famous samurai Sakanoue Tamuramaro was a direct descendant of Cho-Busho.
In 1156, Minamoto Shikibunojo Tomoyuki who was a general of Minamoto Tameyoshi Shogun was defeated in battle and retreated to Mount Iwao in Iga. General Tomoyuki changed his name to Hougen Sennin and he put on the school name as Koto Ryu Koppo-jutsu from the legendary story of Cho Gyokko punching and knocking down a tiger.
Koto Ryu Koppo-jutsu was taught to the Iga Ninja as secret martial arts from Momochi Sandayu during Tensho Era (1573-1591).