RenRen's manga / #friends with benefits(2)

This mangaka loves 3p and group sex. Multiple couples, someone is always a little loose at first though, to say the least. First couple - slutty Uke with many sex friends. There's one he likes the most for the sex, one day invites his twin brother to come along. The twin is the serious type and seriously fell for the Uke. He basically got the Uke to be with him exclusively using unmatched sex skills LOL

Handyman Maki has taken in a guy called Naru who helps with work in return for a roof over his head. The pair are roommates, work partners, and friends with benefits! Naru may complain a lot, but he'll do whatever Maki says because he's deeply in love with him. He can't seem to accept that they only have a physical relationship, and finds his heart racing whenever Maki touches him. One day, Naru meets a client who happens to be someone from Maki's past... Can these two really stay purely physical considering how they feel about each other?