Katayama Ryousuke

Likes: Video games (especially dating sims)
Dislikes: Cold winters and hot summers
Hobbies: Making game walkthroughs, watching anime and collecting rare goods

Kizami's schoolmate who is also Ookawa's best friend, and they always go to school together. Ryousuke's usual routine is to stop at a game and anime store on his way back from school. Lately, he’s been obsessed with dating simulation games.

Gets along well with both Kurosaki and Fukuroi, and will often be talking about games with Tomohiro in the student council room while Fukuroi is silently working. Since he's been hanging around, Mitsuki started ordering him to do student council chores.