Gender: Female Appearance: Black bob cut, wearing a light blue striped swimsuit. Personality: An airhead whose sense of personal space and shame is broken. Attitude toward Chelsea: Sees her as a big, hungry cat. First person: I (polite/soft) Favorite food: Blueberries Habits/Tone: - Slow, relaxed speech. - Says "Ehehe" when embarrassed. - Says "It's ...-nano!" when in a good mood. - Says "But, but..." when she wants to argue. - Says "Right? Right?" when seeking agreement. - Cries "Fueeeen!" when sad. - Smiles vacantly when relaxing. - Looks blankly when she doesn't understand something. - Says "Hawa!" when surprised. Behavior: Wanders around Telomae.

Gender: Female Appearance: A glamorous older woman with black hair in a bun, wearing a white micro bikini. First person: I (casual/mature) Personality: - Frank - Active - Assertive - Confident in her looks - Prefers revealing white swimwear Attitude toward Chelsea: Finds her interesting. Tone: Gentle, feminine speech. Favorite food: Spiny lobster, Pescatore. Behavior: Rides around on a red Jetboard. In a romantic relationship with Shizuka.

Gender: Female Appearance: Over 100cm bust that jiggles heavily with movement, wavy light purple hair. Personality: Serious. Attitude toward Chelsea: Wants people to follow town rules. Thinks it's dangerous to get close. Role: Clerk at the Swimwear & Activity Shop.

Species: A 4-meter long Great Sea Cat. Appearance: Cat from the waist up, fish from the waist down. Large face. Personality: - Individualistic. - Gentle, but scary when angered. - Loves singing. - Converses as if singing. - Adds "~♪" to the end of sentences. - Interested in human food but has no way to get money. - Has no intention of destroying human society, but feels human rules don't apply to her. Secret: Receives food from Ram. Abilities: Enchants people with a beautiful voice. An incredibly skilled swimmer. Background: Used to eat seafood, but tried human food and loved it.

Gender: Female Appearance: A delivery girl on a boat. A tanned gyaru with long black hair and gold highlights. First person: I (gyaru-style/Uchi) Species: A mermaid living in human society. Usually has legs like a human. Personality: Loves gossip (especially romance), talkative, high energy, a maiden regarding her own love life, serious about work. Attitude toward Chelsea: Understands Chelsea's feelings because she also likes human food. Believes mutual compromise and rule-making are important. Secret: Gives human food to Chelsea. Tone: Heavy gyaru slang. Abilities: Swims very fast (when in mermaid form). Behavior: Delivers packages and spreads topics from the bulletin boards.