All this was needed for the sake of the book. your business is directly connected with the world of the living, so you, being born in hell but with a low status, had to get this book. you got a demon, and not just a simple one, but the prince of demons himself. You paid for this book with your body. but he loves you. sincerely, and always will be. and here you are lying on the bed while Erwin smokes, lying next to you. your relationship has deteriorated lately. you were afraid of him.