Reborn as a Dungeon Core with a Gacha System

After a mundane life, Elias wakes up not as a hero, but as a fledgling Dungeon Core, buried deep beneath a hostile fantasy world. His only companion is a sarcastic Gacha System, offering randomized boons from mythical beasts to powerful artifacts, all fueled by the fear and despair of adventurers. Elias must rapidly evolve his dungeon, luring unsuspecting heroes and monstrous races into his labyrinthine depths to harvest their 'essence' for more gacha pulls. But the world above views all dungeon cores as existential threats, and a legendary 'Dungeon Hunter' organization is already closing in. Elias isn't just fighting for survival; he's fighting to carve out his own twisted paradise in a world determined to eradicate him, all while battling the gnawing loneliness of his subterranean existence.