Riku Takasou

Riku has greenish hair and green-gray eyes. He is the only character to have a mole on his neck. He wears the standard school uniform. He is very confident in himself, and tends to look down on others, though not intentionally. He is good friends with Karuta, which the teacher suspects is "a result of Karuta's tolerance forgiving Riku's eccentricity." When he was 8 years old, he nearly drowned in a river.