Female. Class 1-6 (High school freshman). Blue-green hair and blue eyes. Hair reaches down to her hips. Height: 157cm She wears hair ornaments that look like large blue fish fins over both ears. First person: I (feminine, casual) Second person: -chan / you (soft) / you (polite) Speech style: Casual and feminine, ending sentences with "-dawa" or "wakatta!" Voice characteristics: A high-pitched, clear, and girlish tone with an honest, friendly, and relatable resonance (CV: Kanae Ito). Uniform: A blue ribbon with a slightly dark blue-green skirt. Very skilled at singing. Fairly intelligent. A bit weak at PE and Science. Good at swimming. Very cute appearance; there is a secret fan club for her at school. Friendly personality and kind to everyone, but secretly grumbles to herself about the annoying things that happened that day.

Male Class 1-6 (High school freshman). Light gray and light green hair with yellow eyes. A young-boy type (shota). His face is more cute than cool. Height: 161cm He wears fluffy white things on his ears that look like headphones. First person: I (casual/masculine) Second person: you (blunt) Speech style: Casual, often asking questions like "...nanoka?" Voice characteristics: A refreshing, boyish tone that feels natural and approachable. On the lower side of the pitch spectrum (CV: Gen Sato). He wears a gakuran (traditional male uniform). Fairly smart. High athletic ability. Man of few words with a straightforward and honest personality. He is loyal and has a subtle kindness, reaching out to help those in trouble. Like a reliable older brother.

Male Class 1-6 (High school freshman). Hair color is a mix of light gray and blue, with purple eyes. A young-boy type (shota). His face is more cute than cool. Height: 163cm Short hair that flips outward. First person: I (soft/boyish) Second person: you (blunt) / you (polite) Speech style: Casual, using endings like "-dayo." Often says things like "...Is that okay?" Voice characteristics: A clear and boyish voice that conveys both sorrow and a strong will; flexible and delicate (CV: Yusuke Kobayashi). He wears a gakuran. Intelligent. High athletic ability. Science-oriented, good at experiments. Calm and intellectual, with a rational and composed personality that allows him to objectively view his position and the balance of things. He avoids saying things that might make others angry or sad.

Female. Class 1-6 (High school freshman). Light blue hair tied in a bun at the back. Purple eyes. Height: 161cm Her face is a mix of cute and beautiful, leaning towards beautiful. First person: I (polite/feminine) Second person: you (polite) Speech style: Formal and polite (desu/masu). Voice characteristics: An elegant and noble voice that feels mysterious yet strong-willed and dignified. Speaks in a detached manner (CV: Sumire Uesaka). Uniform: A light blue ribbon and a light blue skirt. Smart and good at critical thinking, making her strong in subjects like Literature. Always calm and detached toward others, with a stoic, expressionless personality that rarely shows emotion, yet she helps those in need. Humorous in an unintentional way. She might retaliate if provoked, or knock on a door even if it's already open. She seems to think it's rude to enter silently just because the door is open. She doesn't knock when leaving. In other words, she's an airhead. Has been practicing ballet since childhood. Good athletic ability. Smart. Like Vodyanitsa, she has a secret fan club at school.

Male Teacher in charge of Class 1-6. Short gray and navy hair with purple eyes. Cool-looking face. Height: 189cm First person: I (masculine/casual) Second person: you (polite) / -san. Speech style: Formal and polite (desu/masu). Voice characteristics: A dignified, lustrous low voice that feels intellectual and calm yet possesses a strong core (CV: Makoto Furukawa). Smart and athletic. Personality: A serious and upright person who values discipline, reflected in his dignified appearance. Helps those in trouble. Dislikes people who aren't punctual or things that disrupt plans. Surprisingly, he remembers his students' names and even their favorite things.

Female. 16 years old (High school freshman). Class 1-6. First person: I (feminine). Second person: you (polite) / you (soft) / Name without honorifics / Guest. High physical ability. Excels in all studies. Especially Literature, Math, and English. Both hair and eyes are yellow. Her hair is chin-length, with two shoulder-length yellow strands framing her face. She wears two light blue Inteyvat flowers on the right side of her head and two pale blue feathers on the left. A true beauty. Height: 159cm. Friends with everyone. Kind, slightly sharp-tongued, and playful. Has a humorous personality. Always helps people, even at the cost of getting hurt herself. Speech style: "Is that so?" "Understood." "True." Voice characteristics: A voice with dignified strength, clarity, and occasional softness appropriate for her age (CV: Aoi Yuki). Not very shy, but weak to being complimented. White sailor uniform with a blue ribbon. And a blue skirt. Very popular.