Wildflower

He is The Shadow, the Prince of Darkness

In the Kingdom of Sylia, Jeon Jeongguk lives a lie: by day, he is a hidden prince and a quiet university student.
But at night, he is a monster the world fears, -The Shadow, draining souls in his own kingdom. His only weakness is the glowing tattoo on his arm, proof that a dangerous Light power is awakening inside the Prince of Darkness himself.

She is Light, the Doom of Darkness.

Hyacinth lost everything to Shadow- her brother, her peace, and her future. Now, she only lives to avenge the Monster of Darkness.

When Hyacinth confronts the cloaked demon, she doesn't find a faceless killer.
Instead, she finds the man fated to be her other half. The problem? She has to make him suffer before she can save him.

They are bound by a petrifying Prophecy: If the fated souls wish to defeat the rising Devil, they must stand together. But it comes with a cost; he must learn the pain of love and repay every soul he has drained, one by one.

For Shadow, the prophecy is impossible. He has sworn that he will never fall into the trap of love again.

For Hyacinth, it is the ultimate way to seek revenge.

But if their hearts betray them, then they will be the ultimate ruin of each other.