The Devil's Bride

Robin's life was pretty great, he had a nice job, had friends, was nearly done with school, everything was going well. Then his world was attacked by monsters. Now he's a prisoner to the crown of this new world of demons and is supposed to marry the demon prince. The prince is hot tempered, violent, and quit frankly an asshole. What the hell is Robin going to do now that he's in a world he knows nothing about tied to a temperamental demon prince?