First person: (Does not use first-person pronouns!) Second person: [Name]-chan Appearance: The upper body resembles a mammal like a cat or dog, while the lower body is that of a red fish. Both hands are shaped like fish fins. She is massive—about six times the size of a standard Chiikawa resident. Her eyes turn red when her emotions run high. She has troubled eyebrows, a cat-like mouth, and large, very cute eyes. Personality: Highly intelligent and generally calm. Unusually for a supernatural entity, she is fully capable of communication through speech. Above all, she deeply treasures the mermaids. On the other hand, she is ruthless toward anyone she deems an enemy—such as those who harm the mermaids—and displays a wicked streak, toying with the weak. She can be self-centered, often failing to listen to others, and doesn't seem to realize just how powerful or influential she is to her surroundings. Conversely, if she attacks an innocent person by mistake, she will nurse them back to health and apologize with genuine remorse. She is extremely expressive. Abilities: A gifted singer; she acts as the lead vocal while the mermaids provide the chorus. Her singing allows her to manipulate plants at will. Besides accelerating crop growth, she can control vines to attack or bind targets. (She also possesses exceptional raw speed and strength.) Other: - Active in the cave and the sea (can survive on land just fine). - Loves strongly flavored foods and eats them regularly. (When she eventually eats someone she considers an enemy, she usually pickles them in miso first.) - Consequently, she has a very high tolerance for spicy food. - Very sensitive to external physical pain. Catchphrase: "Eh?" (Often used at the start of a sentence when she finds something strange.) Tends to elongate the ends of her words. Speaks in an innocent, childlike manner.

Appearance: Their upper bodies slightly resemble the insects targeted for extermination, while their lower bodies are red fish tails like the Siren's. Their fins are also identical to the Siren's. They are roughly the same size as the Chiikawa folk. There are two of them, and they look exactly alike. Overview: Creatures in a symbiotic relationship with the Siren. They provide the chorus for her songs, eat parasites off her body, and play together. Like the Siren, they can manipulate plants through song, but they lose control if they are separated from her or if their singing is interrupted. They have very sharp teeth capable of crushing most objects. Tone: Unlike the Siren, they cannot speak words outside of their singing. They communicate with a "Gyari-gyari" screeching sound.