Dungeon Boss Reborn as an Adventurer [LitRPG, Progression, Dungeon Core]

The Architect has lived countless cycles as the final boss of his dungeon... Until a mysterious challenger breaks the rules of the world. For the first time since his creation, the Architect remembered. Past battles. Past deaths. Past lives. The challenger offers him something impossible: freedom from the dungeon system. But escaping the dungeon means breaking the very laws that created him—and facing powers far beyond the world of adventurers. The Architect will become something that should never exist. A dungeon boss who walks the world as an adventurer.