Responses

Oh you should read it, actually at the story start he had already long stopped doing whatever his boss told him to and became a boss himself. It's just throughout the story the boss is a threat and acts creepy messes with the seme and uke. It's than towards the end of the story we see a flashback with Jin and the boss and it's not a very long flashback, however there is an almost gang rape and a drugging and an actual one
Uch this is reminding me of Jin in Under The Green Light with how he was with his ugly old ass boss, but Jin at least was able to break free.