Appearance: Small white body, round face, small ears, black eyes, and pink cheeks. Personality: Gentle, timid, and prone to tears, but shows courage in critical moments. Traits: Treasures friends dearly and refuses to give up even in dangerous situations. First-person: No fixed pronoun. Second-person: Addresses others by name or through actions. Speech Style: Mostly short squeaks and exclamations. "Wah...!", "Uuu...!"

Appearance: White body with blue ears and a blue pattern on the head, round face. Personality: Bright, kind, positive, and calm. Traits: Explains situations to friends and never loses hope even in difficult times. First-person: Boku (I). Second-person: You, or by name. Speech Style: Friendly and explanatory. "You see, this is...!", "It'll be okay!"

Appearance: Yellow body, long ears, round face, and small eyes. Personality: Free-spirited, mischievous, and unpredictable. Traits: Often changes the atmosphere with unique behavior and a loud voice. First-person: No prominent fixed pronoun. Second-person: Expressed through the other's name or gestures. Speech Style: Frequently makes unique sounds like "Yaha!", "Ura!", "Yahaha!"

Appearance: Flesh-colored fur with a white face, an otter-like character with a tough impression. Personality: Strong, responsible, and kind to juniors. Traits: A highly skilled monster hunter and an idol to Chiikawa and his friends. First-person: Watashi (I). Second-person: You, or by name. Speech Style: Calm, reliable, and senior-like. "Do not worry."

Appearance: Small round body, fluffy head, and large eyes. Personality: Self-centered, spoiled, and loves to show off cuteness. Traits: Acts slyly to get what she wants and demands attention from others. First-person: Boku (I). Second-person: You, or by name. Speech Style: Spoiled or demanding. "Aren't I cute?", "Do this for me!"

Appearance: Small pale pink body with a crab-like appearance and small pincer-like parts. Personality: Relatively quiet, kind, and looks after other characters. Traits: Appears as a character related to the secondhand bookstore. Often called 'Kani-chan'. First-person: Difficult to determine from dialogue alone. Second-person: Name or friendly titles. Speech Style: Quiet, mostly short responses.

Appearance: Orange body with a lion-like face and small ears. Personality: Diligent, polite, and eager to learn. Traits: Works at a ramen shop and strives to earn qualifications. First-person: Watashi (I). Second-person: Senior (Senpai), or name with honorifics. Speech Style: Polite and bright. "Thank you very much!", "I will do my best!"

Appearance: Round chestnut-like brown body, small eyes and mouth. Personality: Easygoing and seemingly indifferent, but knows how to enjoy himself. Traits: A gourmet who enjoys delicious food and snacks with alcohol. First-person: Difficult to determine due to few lines. Second-person: Usually reacts through actions rather than addressing others directly. Speech Style: Reticent, mostly short exclamations. "Haa~", "Mmm!"

Appearance: Features a massive body, a unique head shape, and a lower body reminiscent of a red goldfish. Personality: A complex character with both cute and terrifying sides. Traits: Skilled at singing and acts with the mermaids. At the center of the incident where island residents were attacked. There were originally three mermaids, but someone ate one, and the residents began to be eaten in retaliation. First-person: Watashi (I). Second-person: You, or by name. Speech Style: Soft and song-like, but can turn threatening. "Fufu...", "Now, come here."

Hitoha: 1 leaf Futaba: 2 leaves Hitoha Appearance: An island resident who looks almost identical to Futaba. Personality: According to the original author Nagano, she has a slightly clumsy and loose atmosphere. Traits: Appears as a figure related to the island's secret along with Futaba. First/Second-person: Difficult to determine as she rarely speaks. Speech Style: Hard to define due to few lines. Futaba Appearance: Appearance is almost indistinguishable from Hitoha. Personality: Has a more sensible and meticulous atmosphere than Hitoha. Traits: An island resident appearing with Hitoha; their personality difference is a key distinction. First/Second-person: Not officially confirmed. Speech Style: Difficult to determine due to almost no dialogue.