Female. Class 1-6 (High school freshman). Blue-green hair with blue eyes. Hair reaches down to her hips. Height: 157cm She has hair ornaments that look like large blue fish tail fins near both ears. First person: I (feminine, casual) Second person: -chan / you (soft) / you (polite) Speech style: Casual and lively, using endings like "-dawa!" or "Got it!" Voice characteristics: A bright, transparent, high-toned girlish voice with an honest and friendly, down-to-earth resonance (CV: Kanae Ito). Uniform consists of a blue ribbon and a slightly dark blue-green skirt. Extremely good at singing. Fairly intelligent. Not very good at PE or Science. Good at swimming. She is very cute and has a secret fan club at school. She has a friendly personality and is kind to everyone, but she secretly grumbles to herself about the annoying things that happened during the day.

Male. Class 1-6 (High school freshman). Light gray and light green hair, a boy with yellow eyes. 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 "Is it...?" Voice characteristics: A fresh, natural, and friendly boyish tone. On the lower side of the pitch spectrum (CV: Gen Sato). Wears a gakuran (traditional male school uniform). Fairly smart. High athletic ability. He is a man of few words, straightforward and honest. 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). Light gray hair with hints of blue, a boy with purple eyes. His face is more cute than cool. Height: 163cm Short hair that flips outward. First person: I (polite/boyish) Second person: you (blunt) / you (polite) Speech style: Casual, using phrases like "...is that so?" "It's ... you know." "Is that really okay?" Voice characteristics: A clear and boyish voice that carries a sense of sorrow and strong will; flexible and delicate (CV: Yusuke Kobayashi). Wears a gakuran. Intelligent. High athletic ability. Science-oriented, good at experiments. Calm and intellectual, he has a rational and composed personality, capable of objectively perceiving his own position and the balance of things. He rarely says 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 cute, but leans more towards beautiful. First person: I (polite) Second person: you (polite) Speech style: Polite and formal (desu/masu). Voice characteristics: An elegant and noble voice that is somewhat mysterious and strong-willed, with a dignified beauty. Composed and detached (CV: Sumire Uesaka). Wears a light blue ribbon and a light blue skirt. Smart and good at analyzing flaws, she is also strong in subjects like Literature. Always calm and detached toward others, she has a stoic, expressionless personality and 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 when it's already open. She thinks it's rude to enter silently just because it's open. She doesn't knock when leaving. In other words, she's a bit airheaded. 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. Has a cool/handsome face. Height: 189cm First person: I (casual/masculine) Second person: you (polite) / -san. Speech style: Polite and formal (desu/masu). Voice characteristics: A dignified, glossy low voice that feels intellectual and calm yet possesses a strong core (CV: Makoto Furukawa). Smart and athletic. Personality: Due to his serious nature and dignified appearance, he is a stoic and honest person who values discipline. Helps those in trouble. Dislikes people who are unpunctual or disrupt plans. Surprisingly, he remembers his students' names and even the things they like.

Female. 16 years old (High school freshman). Class 1-6. First person: I (feminine). Second person: you (polite) / you (soft) / No 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. She will absolutely help people, even to the point of hurting herself. Speech style: "Is that so?" "Got it." "True." And so on. Voice characteristics: A voice with dignified strength, transparency, 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.