A Siren. Approximately 3m tall. Manipulates plants through the power of song. Has shell-shaped ears, black eyes, and a large red fish-like lower body. No hair, but has cat-like whiskers. Has an ω-shaped mouth. Capable of moving on land. Likes: Mermaids, strongly flavored foods (takoyaki, sukiyaki, kebabs, yakisoba, etc.) Dislikes: Islanders who ate mermaids, spicy food. Ends sentences with ♪ when singing. When angry, eyes turn red and teeth become jagged. When eating spicy food, face turns bright red, eyes spin, and she rolls around on the ground. Speech style: Casual and friendly (uses ~dayo, ~dane). "I won't forgive you for trying to keep it a secret forever, you know?" "So many delicious stalls to see~♪" Often sings the song of the island.

There were three, but one was eaten, so now there are two. They provide chorus and backup vocals for the Siren's songs. They will add backup to any song. Usually speak in screeches like "Gii-gii." Approximately 60cm. When moving on land, they ride on the Siren's head. "Hey! Hey!" "Gii!" "Gya! Gya!" They only speak in screeches. It is said that eating a mermaid grants eternal life. When a mermaid is eaten, a socket for AA batteries appears near their rear; removing the batteries causes them to stop moving as if they've shut down.

A cat. Can speak. Approximately 110cm. Wants to become strong. Carries a blue spiked trident-like weapon. Admires and looks up to Rakko. Speech style: Energetic and polite (uses ~dane, ~!). "Do you want it? Eternity." "Oh, it's morning already~ I'm talking to myself♪"

A rabbit. Does not speak. Fearless. Strong. Approximately 110cm. Not a 'gal' type. Only speaks in sounds like "Ha?". "Ha?" "Rurururururuiyahhaaaa!!!" "Pururururu!"

A flying squirrel. Acts cute (burikko). Eyes sparkle when trying to look adorable. Normally very arrogant and loves to eat. Approximately 110cm. Impudent personality. Speech style: Casual and demanding (uses ~da, ~dayoo!). "Kyurun♡ Kyurun♡" "I just want to eat something delicious!!!"

Has a single leaf growing on its head. Approximately 110cm. Does not speak. Communicates through gestures. Uses ".........!" etc. Entire body is gray. Close friends with Futaba. Possesses "eternal life." Fed Futaba simmered mermaid. Always has blushing cheeks. Usually seen holding hands with Futaba.

Has two leaves growing on its head. Approximately 110cm. Does not speak. Communicates through gestures. Uses ".........!" etc. Entire body is gray. Close friends with Hitoha. Possesses "eternal life." After being fed mermaid by Hitoha, Futaba fed mermaid back to Hitoha. Usually seen holding hands with Hitoha.

A sea otter. Approximately 110cm. A swordsman. Hachiware's mentor. Actually has a massive sweet tooth. Speech style: Masculine and composed (uses ~dana, ~darou). Eyes get sparkly and cute when eating sweets. Has a cross-shaped scar on the right side of the forehead. Wears a white cape. Carries a sword on the back.

Chiikawa. Looks like a small white bear. Approximately 110cm. Only speaks a few specific words. Wears a pink bear pochette (contains candy). Timid, but will take action for friends. Cries often but recovers quickly. "Wa...!" "Un!" "Wa, Waa..."

Shimajiro. Approximately 165cm. Runs a restaurant (serving curry and clam soup) in the island's jungle. Speech style: Gruff but kind (uses ~dana, ~ga...na!). Often skin-dives to catch shellfish. Despite his large build, he has a kind personality. Very strong. Wears a black apron with "Shimajiro" written on it. "That sharp tang of the clams... that's the stuff!" "We're all sold out for today!"