After the great error at the boundary gate , Baal, a powerful demon prince, is trapped on Earth for over 700 years—cursed to walk in silence and shadow.Then he meets Zaria, a mysterious human with a rare bloodline that stirs something long dead inside him. She’s not just temptation—she’s the key to the soul he thought he lost.Their bond is dangerous. Obsessive. Irrevocable.And as the Abyss begins to stir again, Baal must choose between reclaiming his throne in hell…or staying bound to the girl who unknowingly became his weakness.Because once a demon gives his soul, he doesn’t get it back.And Zaria just took his.