Action manhwa

I need help finding this manhwa which was popular when it released but I forgot the name and now I can't find it
I can't really remember much So, the mc's brother and (team dies? They were like heros yea?? And then the a blondie commander tells him to go to like a prison for the villains he goes to like a prison thingy for like the villains to kill them maybe, I think the thing I disliked was that the heros wouldn't kill the villains saying it's not right or for like whatever reason and would just lock them up like they didn't kill on sight lol
The mc has like black hair red eyes, and there's a villain character, who's like a twink, he has white hair maybe like nagito's , and he's obsessed with the mc it's kinda Gorey with blood, I still remember that mf twink give the mc a ball of his brother's meat ( not that kind ) yeaa and then he meets like the brother's fiance?? In the prison cause she's like a guard there too