User blog comment:Monkey d strawhat/Demons in one piece/@comment-5034704-20120508203634

About demon, the Japanese oni has been translated as demon. Isn´t as small in meaning as demon btw, recommend the book Japanese Demon Lore: Oni from Ancient Times to the Present by Noriko T. Reider. BTW in One Piece oni is clearly the "enemy (arcfiend )of the central power" e.g. World Government - as Ace being called oni no ko translated child of a demon, In that forementioned book you may read, that it means the others too.. as there are A LOT of others historically and presently in the Japanese society.. whose existence .. how was it in one of the beginnings? ;) so.. Nothing magical