The Ninja, The Secret History of NinjutsuThe Ninja, The Secret History of Ninjutsu is the most renowned and misunderstood of all martial arts. The long history of ninjutsu is often murky, surrounded by mystery and legend. Here, for the first time, is an in depth, factual look at the entire art of ninjutsu, including the emergence of the ninja warriors and philosophy in feudal Japan; detailed historical events; its context in the development of other schools of martial arts; and the