Kamui no Ken  

A espada de Kamui, Dagger of Kamui, La spada dei Kamui, Revenge of the Ninja Warrior, The Blade of Kamui, The Dagger of Kamui, カムイの剣

A young boy named Jiro discovers his mother and sister murdered in their home. Accused falsely, he flees from his village and meets a priest named Tenkai. After completing a task assigned by Tenkai, which involves killing a rogue ninja named Tarouza, Jiro undergoes training to become an assassin master. Years later, Jiro learns that he was an orphan and his real father was Tarouza, who had worked for Tenkai until he fell in love with an Ainu woman. The young ninja discovers that the Shogunate wants to retrieve Captain Kidd's lost treasure and use it to isolate Japan from the rest of the world once again. Using clues kept secret by Tarouza, Jiro travels with Oyuki and Sam to Russia and America in search of the treasure, hoping to use it for revenge against Tenkai.