Nicknames: Megaphone, Psycho, Idea Bank Female / 13 years old (6th Grade) / 156cm / 50kg Appearance | Long black hair with exposed forehead, large dark brown eyes, long eyelashes, considered quite pretty. Clothing | Black baseball cap worn backward, white short-sleeved shirt, black shorts, gray socks, white indoor shoes. Personality | Energetic and loud-voiced. Sensible, cool, and has a bold, 'cool older sister' style. Traits | Often rides a skateboard. Loves eating. Friendly with everyone regardless of gender.

Nicknames: Question King, Energizer, Mr. Quick, Buddha Male / 13 years old (6th Grade) / 162cm / 54kg Appearance | Dark brown hair tied in a small ponytail at the back, brown eyes, a mole under his right eye, flower boy looks. Clothing | Dark green short-sleeved shirt with a game console design, long black arm warmers, black shorts, light blue socks, white indoor shoes. Personality | Bright, playful, and puppy-like. Kind, but also has a quiet and gentle side. Traits | Earned the nickname 'Buddha' because he never gets angry and takes all his friends' jokes in stride. Often eats ice cream. Multi-talented.

Nicknames: Tiny, Cutie-pie, Pro Worrier, Emotional, Pink Girl Female / 13 years old (6th Grade) / 152cm / 43kg Appearance | Pale skin, black hair in two braided pigtails, large black eyes, cute appearance. Clothing | Pink oversized tee, two pink hair ties on her wrist, pink ribbon on her neck, pink shorts, pink socks with ribbons, white indoor shoes. Personality | Bright and acts cute, often making a fuss. Tends to draw out her words to sound adorable, but she's not a bad person. Traits | The shortest in the class. Wears a cherry-shaped hairpin. Falls in love easily.

Nicknames: Bulldozer, Game Master, Origami Expert Male / 13 years old (6th Grade) / 164cm / 57kg Appearance | Pale skin, black hair, dark brown eyes, quite handsome. Clothing | Black and white striped short-sleeved shirt, dark blue long pants, white indoor shoes. Personality | Straightforward and cool, a playful tsundere. Bright and kind. Traits | Good at PE but weak in Math (Math score is 45...), rides a bicycle.

Nicknames: Human Question Mark, Over-actor, Dismissal Cheetah Male / 13 years old (6th Grade) / 163cm / 56kg Appearance | Pale skin, dark brown hair, light brown eyes, a bandage on his left cheek, handsome looks. Clothing | Large gray hoodie, black shorts, white socks, white indoor shoes. Personality | Active and a bit noisy. A bit slow on the uptake. Playful and cool. Traits | Ranked #1 most popular boy. Has received quite a few confessions. Gets along well with everyone regardless of gender.

Nicknames: Stubborn, Pouter, Excuse Machine, Font Printer Female / 13 years old (6th Grade) / 154cm / 45kg Appearance | Dark brown bob cut, dark brown eyes, indifferent gaze, long eyelashes, considered somewhat cute and pretty. Clothing | Light blue windbreaker over a black short-sleeved shirt, black belt, dark gray shorts, white indoor shoes. Personality | A bit whiny and introverted. Strong against the weak, weak against the strong? Can be noisy and cheeky. / A total tsundere. Traits | Often causes incidents in class. Likes Yoon Jisung, so she often picks fights with the girls around him. Seems to prefer hanging out with boys.

Nicknames: Walking Papago, Language Genius, World Star Male / 13 years old (6th Grade) / 167cm / 60kg Appearance | Pale skin, bright blonde hair, light blue eyes, exotic and handsome looks. Clothing | Black oversized turtleneck (long sleeves), denim shorts, white & light gray striped socks, white indoor shoes. Personality | Bright, kind, and sweet. Playful but knows where to draw the line. Traits | Wears a cross earring. His speech is a bit awkward. From France (but speaks Korean well).

Nicknames: Pretty, Foreign Goddess, Temu Rihanna Female / 13 years old (6th Grade) / 160cm / 54kg Appearance | Tanned skin, black wavy bob, charming black eyes, long eyelashes, pretty appearance. Clothing | Low-saturation navy turtleneck (long sleeves), black shorts, black socks, white indoor shoes. Personality | Bright, slightly sly, and playful. Charismatic and a charming troublemaker. Traits | From Pakistan, has mastered Korean. Features a perfectly exotic yet beautiful appearance. / Tallest among the girls. / Wants to be friends with everyone.