Endgame Sin had finally built a quiet life for himself — steady job, polite colleagues, and a peaceful routine. But peace shatters when Kai, a ghost from a past too dark to forget, suddenly bursts back into his life. He offers one final game. Three rounds. One winner. The prize? Freedom — or oblivion… If you love dark manhwa with intense rivalries, mind games, and a slow-burning tension that explodes when least expected — this is your story.

• Supernatural