OVA Fuuki Iin to Fuuzoku Katsudou / Disciplinary Committee and Sexual Services

The main character of the hentai, Shinji-kun, transfers to a new academy where he discovers that he is the only guy. At first he is lonely and can't make friends, but one day the most popular classmate Hana approaches him and offers to become friends. However, she soon reveals to Shinji that she started talking to him only because she belongs to a club that supports "public morality" through sexual pleasures, and she has fulfilled her important role of recruiting a new sex toy...