Cure Marine is the Pretty Cure alter ego of Tsubomi Hanasaki's energetic classmate, Erika Kurumi, in HeartCatch PreCure!. She is a bright, stylish, and outgoing heroine who becomes one of the main magical girls fighting to protect the Heart Tree and the world from the Desert Apostles. Cure Marine is known for her confidence, fashion sense, and lively personality, and she often serves as the comic, spirited counterpart to Cure Blossom while still showing strong loyalty, courage, and determination in battle.