Lanz Kuroda's Awakening Test ended in catastrophic failure—not merely a low rank, but an FFF grade that severed his access to the system entirely. Deemed unworthy, he was cast aside like a failed tutorial NPC, his hunter career finished before it began. Everything changes when a defective relic crystal purchased from a black-market vendor suddenly activates, unlocking something impossible: a forgotten parallel system connected to an abandoned alt account. This account operates without level restrictions, system limitations, or regulatory oversight. During daylight hours, Lanz remains the powerless failure everyone dismisses. But when darkness falls and he enters the dungeons, he transforms into Zero—a shadow hunter operating beyond all constraints. Solo clearing high-tier raids. Building an unstoppable legend shrouded in anonymity. The world writes him off as worthless. They have no idea what's coming.