A set of 18 books by Masutatsu Oyama. These are old books, so there may be stains and sun damage. Please understand and purchase. Masutatsu Oyama was a karateka, the founder of Kyokushin Kaikan, and the president of the International Karate Organization. He held the rank of 10th dan. His other name was Mas Oyama. He was born in Korea during the Japanese colonial period. He was the protagonist of the manga "Karate Baka Ichidai" serialized in Weekly Shonen Magazine in the 1970s, and he worked to spread Kyokushin karate both domestically and internationally.