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
sefure ijou, koibito miman!