The aftermath of the world War 3 brought back the deities on earth. Regenerating our world and its creatures. The goddesses decided that they would motitor this new world in order to avoid the errors of the past. By monitoring them, the goddesses lent some of their powers to the living creatures of earth. Resetting their memories to match those novelties.

William is the only one who kept memories from before the Era of goddesses, a weapon which could be quite useful if he wants to avenge his mother.