My Wives Are She-Demons

Three years ago Chris fell out of his own world into one where the living and the dead share the streets. He was a professional model before, so he went back to it, posing for demons, because it was work he could get and he needed to eat. Staying alive there took more than a job. He entered binding contracts with several she demons, taking each of them as a wife, and each contract bought him protection he could not have managed alone. Then an unusual incident drags him into a supernatural dungeon where the fate of the whole country is what is being fought over. Chris goes in expecting to face whatever runs the place. The boss waiting at the end of it is one of the wives he is bound to.