Saved by the Siren from Hell

Coral Court heiress Marina is branded a "living curse" when the Sacred Coral Crown shatters—rejected by her fiancé, betrayed by her adopted sister, and sentenced by her father to the Deep Sea Purgatory, where she meets Caspian, the last heir of the Black Tide royal family, imprisoned and cursed by his uncle Nereus. After escaping and giving birth to twins, Marina becomes the Sea Demon Queen while Caspian raises their elder daughter; five years later, she returns for......