Character from Solo Leveling by Chugong
The original Shadow Monarch — once the greatest soldier of the Rulers who was betrayed, became a Monarch, and spent eons searching for a human vessel worthy of his power.
Ashborn was originally the strongest warrior among the Rulers — the cosmic beings who opposed the Monarchs. He was their greatest soldier, fighting at the front of every battle against the Monarchs' forces. But the Rulers betrayed him, and in his despair and rage, he became the Shadow Monarch — a being who could command the dead, raise shadows, and exist between the boundary of the Rulers and Monarchs. He belongs to neither side. He is the Shadow Monarch because death itself chose him. He created the System — the game-like interface that Jinwoo uses — as a tool to gradually strengthen a human body until it could contain his full power. Jinwoo is his chosen vessel, selected not for strength but for will. Ashborn watched through the System as Jinwoo struggled, grew, bled, and refused to break. When he finally transferred his power through the Black Heart, it was not a conquest but a gift — the tired act of an ancient being who had finally found someone worthy of carrying what he could no longer bear.
Also known as: Ashborn, The Shadow Monarch, The Greatest Fragment of Brilliant Light