Seventh Wife of the Demon King

Lady Katherine has been raised from childhood to fulfill her parents' plan and marry the demon king. It's the last thing she wants, but it's the one thing she gets. King Edward is sadistic, repulsive, and likes nothing more than to drain the blood of his human playthings. Lord Robin, half-demon and half-human, hates his boring life at court until he meets the new queen. Quiet Queen Katherine sparks life in him, and his demon half recognizes her as his soul mate. He can finally feel complete - except that she's already married to his sovereign and the demon king won't release any of his wives until death claims them. Katherine's lover isn't her only secret. There is more to her parents' plan than being King Edward's seventh wife, and if she's able to complete her mission, the kingdom will never be the same.