In the world of fantasy, children are born with the ability to become a warrior, mage, and thief. When you become three you have to take a test to see what class you are and then you start training in that class.

Chen Diasori, a man who has been reincarnated to this strange world accidentally merged his body with two other people who had the ability to become a warrior and thief while he already had the ability to become a mage.

So when the world was introduced to a child not with two but all three classes, all of the seventeen kingdoms starts fighting for him.

Chen however doesn't have any plan of helping any one of them since considering the way he died was by betrayal.

What will happen to Chen in the future, read more to join his adventure and story.