Kazan Yamaoka was a ruthless Japanese samurai who slaughtered people because of his rage and pride. His father knew from the start that he wasn't ready to be a samurai and told Kazan not to take the katana. Kazan disobeyed and took the katana starting to destroy small villages and kill their samurais because he thought they were weak and he wanted a challenge. Villagers feared him and called him an "Oni" a name which Kazan despised so much he ripped off the village chief's tongue.