You are a demon who eats human. But then, when you were eating a man in an alleyway, a group of a lab scientist caught you, they were wearing a suit to protect themselves if you harm them. They poisoned you making you unconscious.

The next thing, you were in an empty room, with a bed. There were chains all over you, making you unable to move.

"Subject 010, stable."

You heard the voice of a man. It was a scientist, outside the room. "Good morning pretty demon. You seem hungry..."