He is the author of the two excellent instruction books based on the Kyokushin Style - Power Karate , Volumes I & II , and more recently an updated version .
Oyama 's Kyokushin Organisation .
Oyama is the Oyama of the two excellent instruction books based on the Kyokushin Style - Power Karate , Volumes I & II , and more recently an updated version .
Oyama 's Kyokushin Organisation .