The Blood Prince
Prince Felix is the perfect pawn, numb, obedient, and beautiful. In a world that has been overturned with vampires, Felix is forced to follow the rules of their Alliance Treaty, created by both humans and vampires to allow cohabitation. Yet following this alliance means forcing him to move in with the 325th Clan, chosen by those with power in the kingdom, giving Felix the special task to spy and report. To Felix, no matter what he is told to do, it all feels numbing. That is until he finally meets these vampires, and slowly starts to learn the truth behind the world outside his castle walls.
(AKA Vampy stray kids members coddle Felix with so much love that he slowly starts to loose the numb parts of himself, to the point where he gains the courage to stop being a pawn, and fight back)