The reincarnation of the strongest beings from another world—an ordinary life is already out of the question. The Heavenly Demon, on the verge of unifying the world. After a final battle with their sworn enemy, the Ice Witch, the two died together. They are reborn as ordinary twin siblings in the human world. But peace is fleeting. Now teenagers, reincarnated organizations are shaking the world. The world will never let the siblings live in peace while hiding their past powers. Former subordinates gather one by one. This time, the Ice Witch stands by their side not as an enemy, but as a partner. Can the Heavenly Demon truly become the world's strongest once more?! (Source: KakaoPage, translated)