Shioiri Anzu

A reserved girl who is not very experienced when it comes to interacting with men. The first man she has had a proper conversation with is Itsuki. She also has a stubborn side and tries to get Itsuki, who sees her like a little sister, to notice her. She is a member of the rhythmic gymnastics club. With her cute appearance and physique, she has become something of a mascot character at the school.

(Translated from: DLsite)