About Tsutomu Ohshima
Tsutomu Ohshima [a] is a prominent Japanese master of Shotokan karate who founded the organization Shotokan Karate of America (SKA). He is the Shihan of the SKA, and to this day holds the rank of 5th dan, which was awarded to him by Gichin Funakoshi. Ohshima's branch of the Shotokan world has become known as “Shotokan Ohshima Karate-do.”
Biography source:
Wikipedia
