Shadow Warriors: S1 E1 - Tigers Sharpen Their Claws In A Storm Shadow Warriors

When a five-year boy, Ietsuna, suddenly becomes the Shogun of Japan, numerous schemes to seize his power begin to hatch. The Shogun's trusted guardian, Hoshina, secretly asks the leader of the exiled Iga ninja clan, Hattori Hanzo, to help protec the stability of the nation.