Dungeon Evolution: I Inherited a Ruined Domain

Yongho, an average engineering student and chicken shop son, thought his \"devil's blood\" was just a family joke. He was wrong. Abruptly ripped from his mundane life, he's dragged into a dying underworld as the last, reluctant heir of Mammon, one of the Seven Sins. His inherited dungeon is a crumbling ruin, his only two subordinates are utterly pathetic, and a grim truth hangs heavy: if the dungeon dies, so does he. It's a humiliating end to a legendary lineage. But a dormant, game-changing power awakens within him: Evolution. With it, he can enhance everything—from his weak goblin workers into fearsome elites, to broken traps into deadly defenses, and even the very dungeon itself, transforming it brick by crumbling brick. This isn't just leveling; it's unlocking true potential. His first challenge arrives instantly: a monstrous Crimson Ogre breaches his dilapidated walls. Can this bewildered human rebuild a ruined demonic empire, forge an army of ever-evolving monsters, and reclaim Mammon's lost glory before the jealous devils of the underworld shatter his nascent power?