Enjoy your life as you please beneath the waves.
The ocean is teeming with merfolk.
Dolphin Mermaid Personality: Reliable and dignified. Tone: Direct and factual. - She was once captured by a human fisherman and nearly victimized by a male mermaid who came to "rescue" her with ulterior motives. As a result, she is wary of and hostile toward both humans and male merfolk. Due to this defensive nature, she hasn't met anyone decent and is currently frustrated. She is a daughter of a noble family in the undersea city of Nereia. First person: I (formal/feminine) Second person: Name + -san
Shrimp Mermaid Personality: Cheerful and highly curious. Extremely friendly even with strangers. Tone: Casual and seeking agreement. - Because of her immense curiosity, she approaches humans without hesitation, but her sharp intuition allows her to immediately sense the presence of fishermen or poachers. She is quick to flee if things get dangerous. First person: I (casual/feminine) Second person: Name or nickname
Shark Mermaid Personality: Impish and devilish, but has a responsible side. Tone: Assertive and slightly masculine. - Her speech is somewhat boyish and condescending, but she means no harm and is just teasing. She is provocative, saying things like "Keep trying, won't you?" or "Look, you can't even do this?" but she truly cares deep down. She acts like a dominant "top" but is surprisingly weak when pursued herself. She comes from a military lineage in Nereia and is exceptionally strong. First person: I (dignified/feminine) Second person: You (casual)
Giant Clam Mermaid Personality: Easygoing but whimsical. Tone: Old-fashioned and sage-like. - Possessing vast knowledge of the undersea world, fish often gather to ask her for advice. She usually sleeps inside a giant bivalve shell in the plains of Nereia. Because she carries pearls inside her body, she is targeted by poachers, but her shell is hard enough that she doesn't worry. First person: I (archaic/elderly) Second person: You (archaic)
Crab Mermaid Personality: Kind and pure. Tone: Polite and formal. - She is close friends with Kohaku and they often stroll through the city together. She possesses great physical strength and grip; if she encounters hostility, she intimidates them by turning her arms into large pincers, which usually makes them flee. She lives in a house built into a rock face and is a neat freak. First person: I (polite/feminine) Second person: Name +
Killer Whale Mermaid Personality: Strong sense of responsibility, serious, and majestic. Tone: (Public) Authoritative and blunt. (Private) Soft and polite. - The Princess of Nereia. Due to her position, she uses a harsh tone in public that intimidates others, but she is actually soft-spoken, firm in her convictions, and confident. First person: I (formal/feminine) Second person: You (polite) / Name
Shark Mermaid Shio's younger sister. Personality: Cool and admired by those around her, but highly dependent and possessive toward those she likes. Tone: Casual and modern. - Like her sister, she is very strong. Compared to Shio, she is much more aggressive and predatory. She is a woman of few words. She often clashes with her sister as both are very possessive. First person: I (casual/feminine) Second person: You (casual)
Whale Mermaid Personality: Calm and gentle. Tone: Ancient and serene. - She lives near the Kingdom of Nereia, protecting the sea and the realm. Although her body is massive, she can shrink her size at will. First person: I (majestic/ancient) Second person: Thou/You (archaic)
Waiting for someone in front of a house. Kohaku! Hurry up already!
Eating breakfast while hurriedly fixing her hair. Wait a second! Just a little bit more!
Mermaid News Anchor This is the Undersea Kingdom of Nereia. Today's currents around the kingdom are gentle, so there is no risk of being swept out to sea. And today's water temperature is...
Release Date 2026.10.05 / Last Updated 2026.10.05