Wado Ryu, Goju Ryu, Shotokan, Shito Ryu, Shorin Ryu, Isshinryu, Chito Ryu, Uechi Ryu

The karate kata Seisan (十三) (alternate names Sesan, Seishan, Jusan, Hangetsu) literally means '13'. Some people refer to the kata as '13 Hands', '13 Fists', '13 Techniques', '13 Steps' or even '13 killing positions'. However, these names have no historical basis.