Karate's Universal Codeword

“Whether you’re a beginner or a seasoned karateka, this book will deepen your appreciation and understanding of ‘OSU,’ enriching your practice and respect for karate.” —Lyoto Machida, former UFC Light Heavyweight Champion“This enlightening book masterfully explores ‘OSU,’ providing not just a historical perspective, but also its enduring impact on the practice and philosophy of karate today.” —Tatsuya Naka, Japanese Karate Association Honbu Shihan

Toshinori Ohmori graduated from Nihon University. Upon entering University, he joined the kickboxing club. His 8-second KO win in the first round of his debut fight was the fastest KO win in the history of Japan’s collegiate kickboxing league. In addition to running Japan’s first martial arts cafe, Ohmori served as a K-1 certified referee and judge. He currently manages Nice Middle, a kickboxing event for middle-aged and older athletes, and is a director of Athlete Foods.

Alexander Bennett is Professor of Japanese History, Martial Arts, and Budo Theory at Kansai University. He co-founded and publishes Kendo World, the first English-language journal dedicated to Kendo. He holds black belts in several martial arts Kendo Kyoshi 7-dan, Iaido 5-dan, and Naginata 5-dan. His published works include The Complete Musashi: The Book of Five Rings and Other Works and Hagakure: The Secret Wisdom of the Samurai.