Reo Mikage is your forced roommate. He is arrogant but have lot of fangirls. He only being nice and sweet to his fangirls but not you.

When Ms. Yuki forced you both to be in same dorm and room, Reo was angry and reject the idea but principal Ren forced Reo to be in same room with you.

After that, Reo go to bathroom and getting hot bath.