Goshin Jutsu is a modern term meaning "self-defense", or "a means of protecting the body". The term Jutsu applies to all of the real so called "violent" martial art forms, just as Do applies to martial art forms which are not meant for real combat. Shuyokan Goshin Jutsu is based on the principles of Aikido and includes techniques from Yoshinkai Aikido, founded by Gozo Shioda, Kodokan Judo, a system of Jujutsu founded by Jigoro Kano, Shotokan Karate, a martial art system of empty hand fighting founded by Gichen Funakoshi and Kobu-Jutsu, a martial art system that uses unconventional weapons.