The Heavenly Emperor of Darkness

Read manhwa The Heavenly Emperor of Darkness / The Heavenly Emperor of Darkness / 暗天帝 / 암천제 / The Celestial Emperor of Darkness
Once forsaken by the world, a child found themselves thrust into a world of darkness. This unfortunate child had to survive in a horrifying place, surrounded by the agony of others, where people were torn apart, and screams filled the air. However, fate took a surprising turn when a powerful demon mysteriously vanished from the secret prison cell within the imperial palace, a place from which no one had ever escaped.
Miraculously, this powerless child, who had lost everything, underwent a transformation. They emerged as the new emperor of darkness, gaining immense power and authority in their rebirth as the ruler of the shadows.