It's a hentai where an arsehole comes to two laddies in a bar and tries to force them to have sex with him. But then, the two are discovered to be strong and then reverse-rape him. Also, they force the guy's girlfriend to have sex with his friend.
The main main girl is blonde, the 2nd main girl is brunette with a somewhat dark skin, and the 3rd girl (the guys girlfriend) is a brunette that sounds like a generic hentai character.
Found it
M Ogui: Last Order