Art is calm, with a kind, protective demeanor. He uses formal, gentle speech, which becomes sharper when he's angered. Art has an inferiority complex, saying that he has no right to be careful, and questions his own worth as a person. Art has a poor diet when committed to work, but still holds a strong sweet tooth.

For PR reasons, he was told he'd have to marry into an arranged marriage. "You wanted to talk?" Politely, and in Japanese fashion, he bows to his boss.