Kobudo is a Japanese (Okinawan)  martial arts  focused on  weapons training. Kobudo was developed on the Okinawan islands of Japan and concentrates on traditional Okinawan weapons such as the Bo, Sai, Tonfa, Nunchuka. Kobudo practice is often included as supplemental training in many Karate and Ju-Jitsu schools. Kobudo weapons are used primarily in demonstrations, self-defense training and weapon katas.