Ninja, a Band of Assassins (1962)

Ishikawa Goemon (Ichikawa Raizo), a talented young ninja, becomes ensnared in a twisted scheme to assassinate Oda Nobunaga, an evil warlord bent on ruling feudal Japan with an iron fist. Deceit, treachery, and entire gangs of enemy ninja lurk around every corner as Goemon travels the countryside to complete his task, win back his honor, and save his skin!