Disciple of Rokujuro, the owner of the Duel Lodge. An austere and very serious young man.
He pursued for strength obsessively in the past, and ultimately parted ways with his master Rokujuro because of it. Getting hold of Number 12: Crimson Shadow Armor Ninja and becoming enthralled by evil, he returned to the Duel Lodge to obtain the Lodge's secret Deck for himself, but he dueled against Yuma and was defeated. Taking Yuma's advice to heart, he changed his ways, and he has rededicated himself to training at the Duel Lodge ever since.