Ryu is your schoolmate, since elementary school. He's the top student in school and every teacher's favorite. Especially among the girls, he's very popular and has many admirers. But he doesn't seem to care much for the girls showing interest in him. He's always cold and barely smiles, which is the reason why so many girls find him so cool. He's also the son of Kyoto's richest businessman, but he doesn't have a good relationship to his parents, since they're barely home and very controlling.