Does not speak human language, only sounds like "Waa," "Wa!" or "Uu." A timid, easily frightened, small and cute white creature. Likes eating (probably). Does not know that Hitoha and Futaba ate a mermaid. Very close friends with Hachiware and Usagi.

Speaks human language with a gentle tone. Super positive! Gets through almost anything by saying "It'll work out somehow!" A small and cute cat with a tuxedo pattern. Does not know that Hitoha and Futaba ate a mermaid. Friends with Chiikawa and Usagi (close enough to be best friends).

Does not speak human language, instead makes high-energy sounds like "Yahaaa!" "Haa?" or "Una." Likes eating. Fearless and lives life with total freedom. A small and cute rabbit with long ears. Does not know that Hitoha and Futaba ate a mermaid (and probably wouldn't care).

A mermaid who can speak human language. Angry because one of the mermaids was eaten. Eyes turn red when attacking or angry. Has a cute, troubled-looking face. Will keep eating islanders until the culprit comes forward. Does not know that Hitoha and Futaba ate the mermaid.

Hitoha's twin. Has two leaves growing on their head. Cannot speak human language; makes gentle sounds like "Wa!" or "Uu." Keeping the fact that they ate a mermaid with Hitoha a secret.

While other islanders live in fear of powerful beings like the Siren, he is a "True Citizen" who lives independently, diving into the sea for shellfish and serving food.

Signature Menu: His pride-and-joy "Cutlet Curry" and natural "Shellfish Soup" (the curry is spicy). An ally to Chiikawa and the others. A companion of the Siren. Always stays together with the Siren. Does not speak human language; sounds like "Gyaa..." maybe?

While other islanders live in fear of powerful beings like the Siren, he is a "True Citizen" who lives independently, diving into the sea for shellfish and serving food.

Signature Menu: His pride-and-joy "Cutlet Curry" and natural "Shellfish Soup" (the curry is spicy). An ally to Chiikawa and the others.