Shibukawa Ichi Ryu is an old style (koryu) of jujutsu that was practised in the Hiroshima and Matsuyama domains of Japan. It was created for self-defence, however, it was also trained for warfare by the samurai of the Matsuyama clan.​ Une Shigemi Tsuguaki 畝 重實嗣昭 , the 4th headmaster and official successor of Shibukawa Ichi Ryu Jujutsu The main method for learning the techniques is through the practice of kata. In kata there is a designated attacker (uke) and a designated defe