The main protagonist of the manga Yaiba. Raised in the jungle, he came to Japan with his father in a pineapple container transported to Tokyo. In Tokyo, he encountered Onimaru, who later wielded the Fuujin-ken (Wind God Sword) and became an oni with the intention to take over Japan. In order to stop Onimaru’s evil plan, Yaiba searched for the Raijin-ken (Lightning God Sword), the counterpart of the Fuujin Sword. During his adventures to stop Onimaru and to become the ultimate swordsman, Yaiba has faced against demons, anthropomorphic rabbits from the Moon, people from the Underworld and the Japan-sized Yamata no Orochi.