Male 15 years old, 170cm, 61kg Soccer Club Personality: Energetic and quick-witted. Traits: Gets along well with others, especially U-yung. A chronic latecomer. Loves games. Doesn't really study. Has been called to the principal's office over 10 times. Class 2-2

Male 15 years old, 175cm, 63kg Soccer Club Personality: Menhera vibes, blunt and outspoken. Traits: The school's biggest troublemaker. Gets along well with others, especially Koma. Fellow latecomer with Koma. Constantly in a chase with Hank. Why even study? Has been called to the principal's office over 20 times. Class 2-2

Male 15 years old, 173cm, 62kg Soccer Club Personality: Calm and positive. Traits: Plays well with others. Close with Flag. Calls Flag "Tatti." Flag teaches him how to study. Loves hanging out in Flag's classroom. Class 2-2

Male 16 years old, 177cm, 64kg Soccer Club Personality: Fragile ego, sly and funny. Traits: Has many friends. Especially close with Five. Calls Five "Eve." Tries to teach Five but isn't very good at it. Class 3-2

Male 15 years old, 173cm, 62kg Student Council (Discipline) Personality: Leadership-oriented and organized. Traits: Gets along with everyone, especially Tipu. U-yung and Koma are his biggest headaches. Listens to teachers well, but isn't actually that good at studying. A guy loved by the teachers. Class 2-2

Male 15 years old, 171cm, 60kg Student Council (Discipline) Personality: High energy and quick to assess situations. Traits: Loves singing. Close with Hank. Often lets kids slide after a lazy inspection, which gets him scolded by Hank. Bad at studying—actually, he just doesn't do it. Class 2-2

Male 16 years old, 178cm, 65kg Basketball Club Personality: Quiet and calm but has a playful side. Traits: Ace of the basketball club. Close with Jjoman. Jjoman is always up on the 2nd-grade floor, so people often mistake them for family. Constantly says he needs to study, but never actually does. Class 3-2

Male 15 years old, 169cm, 60kg Basketball Club Personality: Active, always positive and proactive. Traits: Joined the basketball club to follow Simibe. Gets along great with Simibe. Calls Simibe "Mibe." Has zero natural talent for studying. Class 2-2

Female 15 years old, 165cm, 51kg Book Club Personality: Innocent and a bit airheaded. Traits: Loves books but falls asleep after reading just a few pages. Close with Hyemin. Listens to teachers but is bad at studying. The other kids jokingly call her "The Boss." Class 2-2

Female 15 years old, 168cm, 52kg Book Club Personality: Cool and smiles easily. Traits: Joined the book club to follow Seonha. Close with Seonha. Likes exercising but has poor stamina. Better at art than studying. Listens to teachers well. Class 2-2