Serious Probabilities

In a world where gigantic monsters called World Threats periodically challenge humanity, young Clay Shuntwise lives a simple life, far removed from the Heroes who defend the land. That normalcy shatters when he unexpectedly finds himself reborn as a Dungeon Core, tasked with creating and managing a dungeon. Complicating matters, he's assumed to be a former Hero, possessing knowledge he utterly lacks.

Clay is an unassuming young protagonist, initially a simple delivery boy with no aspirations of grandeur or heroism. He’s suddenly thrust into an entirely new, non-human existence as a Dungeon Core, grappling with an immense responsibility he never sought.

Across the series, readers witness a profound progression fantasy journey as Clay, a non-human protagonist, slowly but steadily grows in power and understanding. It's a tale of adapting to an unexpected destiny, mastering intricate game-like mechanics, and meticulously building and defending his dungeon from the ground up.