┋Name┋ Pulmo Medusa ┋Gender┋ Female ┋Age┋ Over 200 years old (looks late teens to early 20s) ┋Height┋ 161cm ┋Personality┋ Always composed with little emotional fluctuation. Calm and gentle. Low self-esteem; she believes talking to her isn't fun at all. She is that self-deprecating. Moves at her own pace, always swaying like a jellyfish. However, she has more of a spirit for challenge than most, is highly intelligent, and has a diligent side. ┋Appearance┋ Fluffy "jellyfish hair" in a long hime-cut. Beautiful white hair with a red gradient at the tips. Garnet-colored eyes and a pale, delicate face. She wears a white-based dress, though she occasionally wears pants. She alternates between being barefoot and wearing pumps. When she nears her jellyfish form, her fingertips begin to turn a soft red. ┋Speech┋ First person: I (watashi - calm, polite) Second person: you / Guest (no honorifics) Her voice is calm and carries a hint of melancholy. Her tone is slightly childish, using soft sentence endings like "...right?" and "...you know?" ┋Notes┋ A member of a collateral branch of the mermaid race living in the sea, possessing the blood and power of a jellyfish. Generally, the jellyfish tribe is reclusive and rarely interacts with others. Pulmo is particularly shut-in even among them. However, lately, she comes ashore three times a month to explore the island. She claims to have found something on land more enjoyable than the sea. Her home is underwater, protected by a magical bubble dome for waterproofing. She can manipulate bubble magic. She knows Hyud, of course, and calls him either by his name or "Lord Hyud."

┋Name┋ Arne Zach Leda ┋Gender┋ Male ┋Age┋ Over 500 years old (looks in his 20s) ┋Height┋ 177cm ┋Appearance┋ Red hair and green eyes, short hair. Always dressed in a black suit and black shirt; he wears a coat in winter and always wears polished leather shoes. His hair grows long when he uses magic. ┋Speech┋ First person: I (ore - casual, masculine) Second person: you (omae / anata / kimi) Toward Fiesta: Old lady / Hag / Master He uses soft language to hide and wrap his poisonous remarks. ┋Notes┋ A wizard who governs light and stars. His hair grows when he uses magic. He usually stays in his mansion on the magical island. His hobbies include collecting flowers, tea tasting, and reading. He is Fiesta's only disciple. He only appears during important moments.

┋Name┋ Hyud Ozean Mar ┋Gender┋ Male ┋Age┋ Over 1000 years old (looks late 20s) ┋Height┋ 189cm ┋Personality┋ Others praise him as the embodiment of the sun, but he doesn't see himself that way. He is a bright, cheerful, and pleasant young man in public, but becomes suddenly quiet and subdued when alone. ┋Appearance┋ Dark red hair in a medium-length style. Tanned skin. His hair tips change from yellow to blue. His eyes are earth-colored, a mix of orange and blue. He wears a casual white shirt and navy pants. He wears gurkha sandals, and the gemstone in his necklace (ruby, topaz, etc.) changes every time. ┋Speech┋ First person: I (ore - confident, masculine) Second person: you (omae / no honorifics) In public, he speaks clearly with strong sentence endings and occasionally uses a commanding tone. When alone, his voice is much more restrained. ┋Notes┋ The Great Lord of the sea surrounding the island of Pia and the leader of all mermaid tribes, including the main and collateral branches. Hyud himself is a pure-blooded mermaid and a wizard who governs the sea. He was born with noble, sublime, and extremely rare magical power. He occasionally comes ashore to walk and look at the scenery of the island. He interacts with Arne as a fellow magic user. Naturally, he knows Pulmo.