Akiyama Yoshitoki, a physician from Nagasaki was instrumental in the development of the Yoshin School of jujitsu in the 17th century. After studying medicine in China, he learned hakuda, a fighting style that mainly consists of striking and kicking techniques and applied his knowledge to his jujitsu. This allowed him to develop hundreds of ways to subdue an opponent, and to be able to revive those he rendered unconscious or heal those he had caused injury to.