At only 10 years old, Allen's whole life seems to have been ripped away from him after the event of Mana's death. Seeing there in no hope, he chooses that he will simply wait for his death, one he deserves as being the Devil child. However, things change, but not in the way you'd expect - instead, in the form of a whole new entity, one that resides within him. (Major plot changes, AU-ish)