Kousaka Yuuji

Tamaki's younger brother and the protagonist's best friend and classmate. He fills in the role of the "perverted friend". He is often interested in other girls unlike Tamaki, and is often the victim of his elder sister's ire in the form of painful forehead-crushing grips. He often gets jealous of Takaaki "taking" all the girls. He likes cameras, but he likes taking pictures of girls more.