The fist is superimposed over the Mon (family emblem) of the Ryukyu Monarch, which is now widely used as a symbol for Okinawa and the Ryukyu archipelago. Sometimes called the Hidari-Gomon or a Hidari Mistudomoe, it was a symbol of Hachiman (a war deity) the tutelary kami of the Minamoto clan. According to The Chuzan Seikan, the first official history of the Ryukyu Kingdom, the Minamoto clan gave rise to the first Ryukyu dynasty via king Shunten, the son of Minamoto no Tametomo.
Minamoto and Taira refugees from the Genpei-gassen introduced sophisticated weapons, martial arts, and military strategies to Okinawa in the 12th century. This event marks the beginning of martial arts and traditions in Okinawa. Traces of these very ancient martial traditions seem to still exist in Okinawan martial culture in the form of tuidi, the weapons arts preserved in some Okinawan family traditions and Udundi, folk dances with weapons, as well as various old plays about events in Okinawan history.