The author met with all the living great karate masters of Okinawa. They entrusted him with many secrets of technology and “deadly techniques”, which for centuries were passed on from father to son, who previously took a solemn oath never to divulge them. The book contains many valuable tips and statements from highly qualified master mentors on the theory and practice of mastering karate fighting techniques and kobudo, as well as interesting information from the history of karate.