My Drifting Husband is the Sea Prince

Nadia Thalassin, eldest daughter of a noble merfolk house, is murdered by her jealous stepsister. Reborn on pearl-casting day, she shuns vanity and weds ragged drifter Kyle - secretly Triton, son of Poseidon. As her sister seizes the duke and court conspiracies close in, Nadia rises with grit and love to become Queen of Atlantis.