Hell isn't a place. It's a family name. In a reality fractured by ancient wars, forgotten gods, and cosmic doors that should never be opened, a young man named Goo-Gun Null awakens with a power known as Copy-Paste—an ability capable of replicating anything he understands. But Goo-Gun is no ordinary human. Haunted by missing memories, hunted by ancient entities, and bound to secrets older than existence itself, he discovers that his life has been built upon lies. His brother Hyung Null fights to protect him. His lost brother Aizeno manipulates fate from the shadows. And beyond reality, terrifying beings known as Fragments, Watchers, and Entities prepare for the return of something that once threatened all creation. As the truth unfolds, Goo-Gun learns that he was never meant to be a person. He was created as a vessel. A key. A weapon. But instead of becoming what destiny demands, he chooses to forge his own path. From ruined worlds and forgotten kingdoms to the mysterious King's Road and the legendary Prison Beyond Reality, Goo-Gun and his allies battle impossible enemies while uncovering the hidden history of the Null Family. Yet the greatest truth awaits beyond the Final Door. A truth connected to the ancient ruler known as the Old King. A truth connected to Goo-Gun's origin. And a truth that may decide the fate of every reality. As fragments reunite and forgotten powers awaken, the war for existence enters its final stage. Because the heir has returned. The Final Door is opening. And the End is waiting.
