When Roy pushed a mother and child out of a drunk driver's path, he didn't expect the truck to end his life. But death was just another beginning. Reborn in a demon-infested world as a lowly imp, Roy discovers he has a unique ability: systemic customization. He can evolve, upgrade, and break the rules of this brutal realm. But to climb the demon hierarchy, he must corrupt human souls—a job he never wanted. Torn between his human conscience and demonic nature, Roy forges a path that could threaten both realms. Can a man who died a hero rule Hell without losing himself? One choice could rewrite the fate of worlds. Discover a new breed of demon king in this epic blend of martial arts, dark fantasy, and soul-testing adventure. Read now.