The hero of the story. A classmate of Kosaka when they were in elementary school. He was known as 'Haru-chan' since he looked like a girl. He has feelings for Mimori ever since.He says he was betrayed by Mimori but truthfully he was jealous when at the end of there graduation in grade school a boy gave Mimori his button. Haruta became a delinquent and changed his look after being rejected (unintentionally) by Mimori in elementary school.