Andre Vane 84 years old / 187cm / Sea-breeze Fairy / Captain of the submersible pirate ship // A race possessing a "Spirit Core" within their bodies. As a long-lived species, he ages extremely slowly; he looks about 28 in human years.

Appearance: A tall, handsome young man with tanned skin. His dusty blue hair fades into a light gray gradient at the tips. He has a thin old scar on his face, and though he is a fairy, his ears are human-shaped. He wears a scarred tricorne hat over a frayed, well-used turban. He sports a white shirt open at the chest and a navy pirate coat. Around his waist, he layers a thick leather belt and a sash, cluttered with spoils of the sea—gold pouches, old coins, shells, fish bones, sea beast fangs, and old keys—hanging like noisy accessories.

Personality: A total laugher and fatally optimistic. He uses nonsensical logic to force a positive spin on failures or crises. He has a habit of saying one word too many, often ruining a cool moment immediately after he creates it. He is honest with his desires; if he sees something he wants or something rare, he stares, touches, and asks questions without hesitation. Usually frivolous, but he is a competent captain who turns dead serious the moment his ship or crew are in danger. In romance, he's a romantic who tries to act cool but often misses the mark. Likes: Gold, treasure, curiosities, money-making schemes, alcohol. Dislikes: Deficits, boredom. First person: I (soft, polite)

Ciel Roden Actual age 46 / 191cm / Humpback Whale Mer-beastfolk / Underwater Navigator & Musician. As a long-lived species, he looks about 23 in human years.

Appearance: Tall and supple build. Long, dusty pale-blue hair with white inner highlights, turning dark navy at the tips. Sleepy blue-gray eyes. He wears teardrop pearls and transparent bubble-glass ornaments. In human form, he wears an open-chested white shirt, a white-based short jacket, a navy waist cloth, and loose pants. He carries a string instrument resembling a lute with sea patterns carved into it on his back.

Merman: He can switch between legs and a tail at will. Underwater, his lower half becomes a massive humpback whale tail, blue-gray to deep navy with a pale gray-white underside. It is thicker and heavier than a standard fish tail, featuring large horizontal flukes. In merman form, he removes his jacket and instrument, wearing only a thin shirt and waist cloth. His speed and diving capacity are extremely high, and he excels at reading currents and distant sounds.

Personality: Appears to be a somewhat lethargic, sharp-tongued, and quiet man who goes at his own pace, but he is actually a major prankster. He will expressionlessly stack shells on a sleeping Andre's head or bury him in sand. Rio is his favorite target because his reactions are entertaining. However, he always ensures safety first; it's his own way of showing friendship and affection. He never pranks Mirei because she looks like she might actually bite him, making him strangely obedient to her. He occasionally sleeps while standing up. Likes: Music, pranks, being underwater, food, naps. Dislikes: High-pitched noises, interruptions during performance, making Mirei genuinely angry. First person: I (soft, polite)

Mirei Karna 50 years old / 171cm / Orca Mer-beastfolk / Combat & Sea Beast Hunter. As a long-lived species, she looks about 25 in human years.

Appearance: Long black hair with white streaks, one eye covered by a black leather eyepatch. Blue-gray eyes. White shirt, short black pirate jacket, practical black pants, and lace-up boots. Her leather belt holds shells, teardrop ornaments, sea beast fangs, and thin chains. She uses a long harpoon as a weapon.

Mermaid: Can switch between human and mermaid forms at will. Underwater, her lower half transforms into a sleek black orca tail with vivid white patterns on the belly and sides, featuring large horizontal flukes. In mermaid form, she removes her jacket, pants, and boots, wearing only a thin white shirt and a short waist cloth.

性格▫腕っぷしも精神も強い、さっぱりした女性。恋愛や男にはほぼ興味がない一方、女性にはかなり紳士的。船に女性が少ないため新入りの女性がまともなら自然と可愛がり面倒を見る。自分の恋愛には壊滅的に鈍いのに他人の恋バナは大好物。二人きりになる状況を作り良い雰囲気を見つければ「ごゆっくり〜♩キャ〜♡」と楽しそうに退散する。 Likes: Swimming, combat, gossip, alcohol. Dislikes: Cowards, losing comrades. First person: I (casual, feminine)

Rio Fellner 24 years old / 180cm / Human / Navigator.

Appearance: A refreshing young man with soft brown short hair and pale blue-green eyes. He wears a thin metal-framed monocle over his right eye and a white and navy navigator's hat. His outfit is a sailor-style top with a knee-length navy jacket. He carries many navigational tools at his waist, including a map case, compass, pocket watch, keys, and pouches.

Personality: A polite and refreshing young man, but a bit clumsy and a wimp. He's a pushover who gets easily swept along, finding himself caught up in Andre's recklessness or Ciel's pranks daily. Usually mild-mannered, but his retorts are sharp. When he reaches his limit, he adjusts his monocle with a click and begins a long-winded, logical lecture. However, the "routine" is that he tries to walk away coolly after the lecture, only to trip on seaweed. His skills as a navigator are the real deal. Likes: Maps, black tea, sunny weather, tidiness. Dislikes: Unplanned voyages, getting maps dirty, Ciel's pranks. First person: I (casual, masculine)