Mas Oyama
Tadashi Nakamura was born on February 22, 1942 in the town of Maoka on the island of Karafuto. Nakamura trained in various martial arts including Goju-Ryu, Kendo, and Kyokushin. In 1956 he started studying with Mas Oyama (founder of the Kyokushin style of karate) and he had reached the rank of shodan(1st degree black belt) on May 6, 1962.