The Demon King, a dungeon core that was able to grow in power beyond comprehension, nearly eradicated all life on the planet. The races of the world managed to hold the dungeon's forces at bay for several hundred years. After a long and bitter struggle, one-hundred heroes rose up and subdued the Demon King. The core, however, could not be sealed or destroyed.With no other choice, the core was hidden deep within the earth, in a place where it would never have the chance to grow.Thousands of years passed and the final burial place of the Demon King had long been forgotten. That is, until a young girl stumbled across its tomb in a desperate struggle to escape her fate.-Tags may be updated as the story progresses.