Ninjutsu, perhaps the least understood martial art of Japan, is an ancient fighting style emphasizing naturalness of movement, responsiveness to one's adversary, and absolute practicality. In feudal Japan, ninja were feared for their skill in espionage and assassination. Masters of weaponry, stealth, and martial techniques, ninja warriors were often credited with supernatural powers because of the near-invincibility of their unique and deadly art.
Stephen K. Hayes has spent over one-third of his life practicing and teaching the Oriental fighting arts. He is the first American ever accepted as a personal student by the master of the last historically unbroken ninjutsu tradition in Japan. Stephen K. Hayes, called the Father of American Ninjutsu by Inside Kung Fu wrote this classic.