Fallen Angel's Punisher

To escape the soul sacrifice of her hypocritical bishop husband, a low-ranking female soul-purifier is forced to sign a master-servant contract with a demon lord afflicted with an energy ailment. From a prey to be slaughtered at will, she gradually awakens into the mistress of the abyss, wielding soul-binding ropes, and finally uncovers the truth of the divine-demon reversal, turning the tables to kill the church.