You're looking for information on Masutatsu Oyama's book on Kyokushin Karate, also known as Budo Karate.

Verification and Authenticity

The Budo Karate of Mas Oyama is widely regarded as a foundational text for Kyokushin practitioners, exploring the deep philosophical and spiritual underpinnings of the style founded by Masutatsu Oyama. Often referred to as a "martial arts bible," the book was written by Cameron Quinn, a long-time student and interpreter for Sosai Oyama, to provide a comprehensive look at the master's life, influences, and the mental discipline required for "The Strongest Fighting Art". Key Content and Themes

The Budo Karate of Mas Oyama (specifically the widely recognized 2021 second edition by Cameron Quinn) is often described as the "martial arts bible" for practitioners of Kyokushin Karate, acting as a comprehensive guide to the philosophy and training methods of Sosai Masutatsu Oyama.