Shitō-ryū (糸東流) is a form of karate that was founded in 1934 by Kenwa Mabuni (摩文仁 賢和, Mabuni Kenwa). A synthesis of various different Okinawan schools of martial arts, the Shitō-ryū is primarily practiced in Osaka. Due to both controversies in Kenwa Mabuni's line of succession and Mabuni's extensive efforts to popularize the martial art form in Japan, there exist many successor karate schools that claim Shitō-ryū as an influence.