Sadao Funatoko
In old Japan, the legend of the ninja lives on in Watari, the Ninja Boy, a motion picture like no other. This is the story of a young boy with almost mystical powers. His skills in ninjutsu are beyond the imagination as he infiltrates the rival Iga clan to expose their evil leader.
The loyal Sōma clan samurai Tange Samanosuke is attacked and mutilated as the result of a betrayal, losing his right eye and right arm. He then begins to lead the life of a nihilistic ronin, using the pseudonym Sazen.
Young swordsman Shintaro must fight against evil officials who plot to overthrow the youthful Shogun.