Help me find a bl manhwa

It was an isekai manhwa, where mc and some other people were transported into a game where they were kings. Their race was also determined by their personalities and stuff. The mc's race or kingdom was of angels(i think), one of the weakest, but he somehow did something to change that and he made his kingdom one of tge strongest. Also, when they first transported, they were waiting for their dukes to show up, mc's duke had black and white wings, whuch later turned all black. Mc and his duke had some tension going on cause mc abandoned(?) his kingdom.