Deon gets called by the Demon king... But not in the usual way. (This may have a little of Deon x Ed as well...)

The demon king seem to have developed quite fond of Deon Hart. Not only because he is a good chess piece, but also because he is very pretty. The demon king is known to be cold toward everyone, but who knew he would have fallen in love with the 0 corps commander? The AU is from a YouTuber named @ICE_SAN_