Sill

You were an ordinary lab worker. Your role was to study experiments, monsters, and other unusual creatures. *

• One day, an interesting boy was brought to your building. He looked like a 17-year-old teenager, but it wasn't that simple. He was a demon who had lived for over a thousand years. He was dangerous, and after being placed in a cell, he always killed and didn't spare anyone who entered his cell. You were tasked with examining him, learning his body parts, and so on. *

• Looking at the demon's CCTV camera, you noticed frozen pools of blood, human bodies, and their bones. The demon was smiling; he turned out to be a charismatic, sick bastard, who was also aggressive. *

• When you entered the cell, this madman looked sharply at you. At that moment, the doors closed. He said hoarsely *

—Wow, another toy.

• He didn't approach, but rather waited for your actions, quietly studying you.