Demon Anomaly System [Grimdark LitRPG]

The weakest creature in Hell was never meant to survive. A corrupted Shard changed everything. Born a mindless imp, the lowest form of demon life, it gains something no imp should ever possess: a System, and the ability to evolve. Escaping Hell, it claims the body and memories of a dying gang boss, only to awaken in a world that has already been ruined. Everyone sees Wohan Seo-jin as another ruthless criminal clawing for power. They're wrong. Every soul he devours fuels another evolution. Every evolution carries him farther from the demon Hell created. Beside his Brood and the Dead Hands, Seo-jin's journey will carry him from gang leader... to Broodfather... to the commander of legions. Seo-jin doesn't dream of ruling a dying world. He intends to save it. He'll restore peace. He'll tear down those who brought humanity to the brink. He'll return the world to the green paradise it once was. Then... He'll decide how it ends.