Sacrificed to the Sea King

To save her gravely ill father, the human girl Elena is forced to take her younger sister's place as the "Tide Bride" and be sacrificed to the sea-folk monster prince rumored to be cursed, brutal, and bloodthirsty. But she does not know that this man, whom all the sea-folk regard as a border lord fallen from power, is actually the King of the Deep Sea, hiding his identity while he recovers from his wounds! And the Sea King never imagined that the destined girl he has searched for desperately for three years would, by a twist of fate, become his wife.