The manga was about two pornostars. One of them did it only with girls if i remeber right. Then the second one appears. He looked not really manly so after a while i think the first one said "ok" to those two making an av. While they're at it, the second one shows him, that he's an S (even though he was the uke... at least i think so i'm not so sure about that) and with two big boys (i think they were build like bodygurads) he tied him up and then they made the porn vid till end. The first pornactor couldn't help himself. That is everything i can more or less remember....
I think i read it 2015/2016... so it's already been a long time since i read it.
If I remeber right it wasn't a dj
Maybe you mean this?
http://www.mangago.zone/read-manga/shiny_star/
I really want a mangago app :x it would be kinda comfortable :x at least I think so :x (╯°Д °)╯╧╧