Michiru Heya満ちる部屋 ; 满月部屋 ; The Full Room

From Manga Updates: Reno has a new roommate, his name is Roger Brouwer, and there seem to be a lot of nasty rumors about him in this boys' school. They call him "Casanova", he sells his body to almost anyone willing to pay for it. Reno is surprised to find that, for Roger, this is only business; transaction is over when people get the wrong idea about something that's just sex. Reno just wonders how is that such a nice person can be so cold at times, why is it that he can do those things as if it means nothing? And why he can't get close enough even when they are friends... naturally, curiosity becomes a heavy load. Will Reno be able to suppress these feelings? Especially when Roger seems to be interested in nothing but money...