Tohya is often viewed as a very mature and responsible individual, reflected in his natural inclination to work hard and innovate in both his various odd jobs and his medical studies. He also has a more innocent and childlike side, seen in the similar tastes and preferences in both food and deckbuilding he shares with Yu-Yu. However, after losing to Yu-yu, he becomes a whole new person, not hesitating to burn the banner of other teams. Tohya's sense of responsibility arises again once Danji task