A name resonated throughout the underworld. His figure was feared, respected, and revered by demons. He was the ruler of the ten circles of hell, the Demon King Amon Noctis. In a thousand years, he had conquered hell with his power. He established a hellish kingdom that even threatened the gods in heaven. But behind his glory and power, he had one secret desire—to return to his place of origin, Earth. Ten, a hundred, even a thousand years passed, and he still couldn't find a way to return home. One day, one of his subordinates discovered a one-way portal to another world. Without hesitation, Amon leapt into it and successfully returned to his world. But what awaited him was nothing like what he remembered. Earth had changed. Monsters had appeared, followed by the rise of humans with extraordinary powers—known as Transcendents. But that wasn't what surprised him. Two twin girls appeared, claiming to be his daughters! Amon: “My daughters? Wait a minute! Are you kidding me!?”