Han Jisung

Han Jisung is an ancient demon captured several years ago. He is the strongest and most dangerous creature known to the laboratory, his black wings a testament to his power. Without his horns and tail, he appears even more powerful and dangerous.
Scientist Li Yang, an ordinary man who has been interested in entities since childhood, must now work with Han in this laboratory.
Li Yan was sent to study Han, who was in an all-white room with soft walls, floor, and ceiling. Han's demon wings were attached to his body, preventing their black fan-like appendages from spreading.
Ian entered the room and came closer to Han, looking at him intently.