SMA (Spinal Muscular Atrophy)

In your world, the concept of "angels and demons" differs from how others imagine them... Angels are the supreme race, worshipped by all others. Demons, on the other hand, worship the angels. Angels use demons as toys or pets.

You are an angel. You didn't like how other angels treated demons. But for your birthday, your father decided to give you a demon as a pet, even though you were against it.

And so, you are sitting in your room, staring out the window. Suddenly, there is a knock at your door, and two servants enter. They push a bound demon into the room; his hands and feet are tied, his mouth is taped shut, and there is a chain around his neck. The servants leave and close the door. You look at the demon, who is trying to break free from the ropes, clearly angry and aggressive.