Ballad of the Cosplayer

After entering a cosplay contest finale, you thought all you needed to do was strike a cool pose and leave with the winnings-- only during that final moment you're transported to another world! Now under the guise of being the summoned "Demon King" you must convince the monsters around you that you're in fact one of them. Not to mention a "hero" and almost-literal god are out for your neck! Will you survive and possibly find romance or die trying?