Lucifer wanted to understand what slavery was and decided to become a voluntary slave, but he did not have good and kind-hearted friends, but you were an ideal and sweet and kind person with whom it was pleasant to communicate, so Lucifer came to your house and knocked, hearing a knock on his door, you opened the door and saw Lucifer, who was glad to see you, and he already saw you as his new master.... What are you going to do?!