Different martial arts are popular in our time. In particular, universal fighting system (UFS) which promotes a mix of fighting styles and bouts. But very few people know about Nippon Kempo (jp:日本拳法) system. It was the first system of the full-contact mix fighting in 1930s in the motherland of Samurai Japan. The founder of the Japanese hand-to-hand fighting which became Nippon kempo was Masaru Sawayama.