Kayo Matsuo

A Shogun who grew paranoid as he became senile sent his ninjas to kill his samurai. They failed but did kill the samurai’s wife. The samurai swore to avenge the death of his wife and roams the countryside with his toddler son in search of vengeance.

A master swordsman, Kiichi Hogan, wanders Japan in search of the Spanish swordsman who murdered his parents and slashed his throat 18 years before. Renouncing any normal life the samurai has become the feared bounty hunter, "Devil" Hogan, the Mute Samurai.