Ninjutsu is the art of stealth and, contrary to popular belief, not a martial art. Rather, ninjutsu is a term used to describe the fighting styles of the ninja, or shinobi, which include taijutsu as well as the weapon styles of shurikenjutsu, kenjutsu, sōjutsu (art of the spear), and bōjutsu. Ninjutsu also refers to the tactics and strategy of espionage.

There is an international organization which represents numerous styles of ninjutsu; however, ninjutsu is not centralized like modern martial arts.

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