Y/N L/N was once a servant of the Black Faction until he was betrayed by his own master and the other masters. Y/N swore that he will get his revenge to those people who betrayed. Not all masters and servants of the Black Faction betrayed him. He fought that he would disappear because he hasn't master anymore but this never happened. By a miracle, Y/N is a full human but can fight like a servant.All Rights Reserved