Old combat system based on ju jutsu; founded by Shinra Saburo Yoshimitsu during the Kamakura period (1185-1336) in Japan. Known also as aiki-jutjutsi, is the art which has developed aikido. In the 13 th century there was a school north of Mount Fuji specialises in dell'aiki-jutsu. He was kept largely secret and confidential a few disciples, mostly Japanese ancient noble lineage. This art drew its roots from kenjutsu and said to be gradually became a method to combat higher jujutsu. The term aiki as ju, indicates a principle, a way of using his own body as a weapon combat. The method aiki need to use the power of coordinated ki in harmony with the conditions of combat, merging with its strategy to reach that of control over him and in the clash.

(This article was translated by a machine translation software and not by one person)