As anyone in Kyokushin knows, Sosai Mas Ōyama was heavily influenced by the great swordsman Miyamoto Musashi, including going into isolation to hone his martial arts, taking Musha shugyō – Warrior Quest, etc., as did Musashi before him. Sosai was noted as saying that Musashi had changed his life completly. An amazing story in own’s right. I find it absolutely incredible what Sosai …