The whole world was Destroyed when there were no hero's anymore

A boy called Waylon was the demon King son but he didn't wanted to be a Demon also so he went to the place where the Angel's lived once

when he went to the Building he saw everything was destroyed only a little stone necklace was there he picked it up confused "what is this.." he tought then put it around his neck without knowing a Angel like you was in the necklace