Zero Class: The Dungeon Glitch

When the sky fractures above Chicago and a world-spanning System descends, humanity is sorted into neat combat roles: Tank, Mage, Healer, Ranger. Twenty-four-year-old Eli Mercer gets nothing. His status screen reads CLASS: NONE, a death sentence in the first wave of city-sized dungeons that swallow entire districts overnight. But when Eli survives a bugged tutorial no one else can enter, he discovers that “None” is not empty at all—it is the hidden Zero Class, a forbidden framework that can steal traits from monsters, fuse skills beyond normal limits, and evolve through errors the System was never meant to allow.

Hunted by guild recruiters, cultists who worship the incoming dungeon bosses, and the System’s own enforcers, Eli forms an unlikely party of outcasts: a disgraced raid leader, a healer with a corrupted mana core, and a cheerful knife-fighter who can hear loot before it drops. Every floor they clear makes Eli stronger, but also less human, as he begins to see the seams in reality itself. To save his sister trapped inside the deepest dungeon layer, Eli must exploit every loophole, break every rule, and decide whether he will become the world’s greatest player—or the final boss it accidentally created.