Natsuki Terashima

An infamous delinquent around school. Though he'd rather spend his days in peace, other people always picks fights with him and accuse him of being a wise guy. He'll take up anyone in a fight if they start it. Terashima first realized he was sexually attracted towards other men in junior high. Apparently, he knew about Narusaki before they worked together at the school library.

(Source: MyAnimeList)