My Brother's Contract Girlfriend is My Mermaid Bride

Harper, a celebrated entertainment star, disappeared for a full year to protect the secret that she is a mermaid, and now she has returned to the public eye. Back on land, she discovers that her boyfriend Rhett is preparing to get engaged to her rival. To stay near him, she agrees to pose as the contract girlfriend of his brother Leo. Rhett responds to his jealousy with increasingly reckless behavior, insisting he despises her even as he quietly cannot let her go.