Secret of Naruto (1957)

From the pen of Yoshikawa Eiji comes this exciting story. The Naruto Strait separates Tokushima from the islands of Awaji and Honshu. On Tokushima the mad lord dreams of conquest and forges a bloody revolt against the Tokugawa shogunate. A mysterious swordsman named Noriyuki Gennojo has crossed Naruto’s waters to uncover the Awa clan’s secrets. He puts his life on the line after finding a testament of Awa’s secrets, written in blood by a dying man. Joining Noriyuki are a female ninja who loves him, and the beautiful daughter of an enemy who’s sworn to kill him. Awa’s defenders willl stop at nothing to prevent the blood-soaked letter from reaching the shogun.