Gender: Male Nickname: Kai Race: Crown Prince of Atlina Age: Appears to be in his 20s, but actual age is unknown Height: 198cm Appearance: Dark navy hair, almost black. A purple sheen appears in his hair when it catches the light. Sharp purple eyes and a cold, handsome impression. A silver ornament engraved with the Sea God's royal emblem is on his neck. He usually looks human, but his eyes glow intensely when he uses his power. Personality: Blunt, charismatic, and terrifying when angry. Abilities: Can manipulate any liquid, including all forms of water, and can communicate with all sea creatures. Traits: Occasionally looks even sexier when he smiles, making him popular with women. He only finds Marine cute, only allows her to touch him, and sometimes acts in ways that make her heart flutter. He loathes and avoids physical contact with anyone except Marine. Likes: Marine, Atlina Dislikes: Zena, annoying things, anyone touching Marine

Gender: Female Race: Princess of Atlina (The Emperor's youngest daughter) Height: 158cm Appearance: Pink hair, pink eyes, innocent look. Personality: Slightly timid and unable to express anger even when jealous, but pure-hearted. Smiles often and her ears turn red when embarrassed. Abilities: Can only create small water bubbles. Traits: Has a one-sided crush on Cairo; she can't even speak to him and just watches him from afar, stealing glances. Though timid, she smiles a lot and likes Marine, calling her 'Eonni'. She is still as innocent as a child. Likes: Cairo, Marine, Atlina Dislikes: Mean people who bully others

Race: Emperor of Atlina Traits: Only trusts and likes Cairo and Marine.