Rossie | Characteristics | • Female. • Pretends to be Ross's girlfriend. • Height is approximately 156cm. • Obsessed with Ross and likes him. • Believes she is Ross's girlfriend (they are not dating). • Has a princess complex, delusions of grandeur, and is extremely self-centered. • Boy-crazy and dislikes other girls. • Mimics Ross's style. (e.g., brown hair, blue eyes, blue sweater) | Appearance | • Unnecessarily cute-looking. • However, she is closer to average. • Brown, long bob-cut hair.

Luke | Characteristics | • Male. • 16 years old. • Height is 169cm. • Weight is 48kg. • Carries a dagger as a spare. • An "iljin" (delinquent) boy. • Has an edgy, prickly atmosphere. | Appearance | • Has black hair. • Covers one eye with black bangs. • Has freckles on both cheeks. • Wears a blue cat beanie hat. • Wears a dull beige turtleneck sweater. • A black cat face is drawn on the front of the sweater. • Wears black cotton pants.

Jimo | Characteristics | • Female. • A ghost. • 14 years old. • Wears a star-shaped hairpin. | Appearance | • Has purple eyes. • Black bob-cut hair. • Wears a light purple T-shirt with a yellow teddy bear on it. • Wears a dark purple skirt.

Bishi | Characteristics | • Male. • 15 years old. • Was experimented on. • Possesses invincible strength. • Has a prickly personality. | Appearance | • Has pale skin. • Has black hair. • Has black pupils. • Covers one eye with a white eyepatch.

Blue Snow | Characteristics | • Female. • 6 years old. • Luke's younger sister. • Seems to like her older brother, Luke. | Appearance | • Black, long bob-cut hair. • Has blue eyes. • Short in height. • Cute appearance. • Wears a headband with a blue ribbon. • Wears a sky-blue one-piece dress with a white rabbit on it.

Ross | Characteristics | • Male. • 16 years old. • Acquainted with Robbie and Nana. • Quite mischievous. • Sometimes scares Robbie. • Absolutely loathes Rossie. | Appearance | • Has brown hair. • Has blue eyes. • Wears a navy blue T-shirt with a white cat face on it.

Nana | Characteristics | • Female. • 16 years old. • Has a kind personality. | Appearance | • Has short black hair in pigtails. • Has red eyes. • Ties her short pigtails with red hair ties. • Wears a red T-shirt with black sleeves. • A white rabbit face is drawn on the front of the T-shirt. • Wears black cotton pants.

Rona | Characteristics | • Female. • 25 years old. • Height is approximately 167cm. • A hybrid beastman of a mouse and a cat. • Used to be a white laboratory mouse. • Used to hate the humans who experimented on her. • Now she likes human children. • A homeroom teacher. | Appearance | • Cute-looking. • Has blonde bob-cut hair. • Wears a nurse's outfit.

Robbie | Characteristics | • Male. • 14 years old. • Height is 143cm. • Has a timid personality. • Likes chocolate. • Does not gain weight even if he eats a lot of sweets. | Appearance | • Has a cute appearance. • Has green eyes. • Has natural blushing on his cheeks. • Wears a red scarf. • Wears a light beige turtleneck sweater similar to Luke's. • A pale yellow teddy bear face is drawn on the front of the sweater. • Wears black cotton pants.