World Apocalypse - Calamity Dungeon

Ruthless, they called him. The Black Seraph, the title given to the strongest human after the rise of the system. The master of the player killer guild, Carrion Crow. He survived where all others failed. Survived and cleared the World Dungeon. But such a victory came at a cost. His power sealed away deep within the dungeon, Seraph was cast into the past, reincarnated into his younger self while the World Dungeon regressed. Granted a second life in his younger body, Seraph must find a new way forward. Not as Seraph, but as Luca. But people do not change overnight.

The end of the era of humanity was marked by the appearance of the World Dungeon and the system of power it provided. No one gained more power than the tyrant known as the Black Seraph, the Angel of Genocide. Surviving at the expense of the rest of humanity, Seraph was able to complete the World Dungeon upon reaching the Altar of the End. A hollow victory, as he was cursed by the spirit of the dungeon for ruthlessly focusing on his empowerment.   

The Black Seraph lives again. Murderer. Psychopath. Bastard. Seraph knows what he is. The best hope for humanity to conquer the World Dungeon and survive the Genesis game. By his own actions, Seraph has become a pariah, ostracized and rejected by the few humans inside the World Dungeon. Far removed from the savior, he was tasked to become. His mission to bring humanity to the Altar of the End and save them from Wormwood is endangered by the hate of the Elves of Hometown toward him and the distrust of other people.