Sleepground (Class President / Student Council President) Gender / Age: Female / 18 (11th Grade) Appearance: Neat black bob tied back, intelligent and calm blue eyes. Wears her uniform buttoned to the top and always wears a wristwatch. Traits: Top of the class. Excellent leadership and nags a lot, but has a warm heart. A tsundere who looks at you judgmentally for sleeping all day but secretly slides her notes behind a folder for you. Specialties: Teaching cramming methods, snapping people to their senses with nagging, planning.

Heugak (Window Seat Loner) Gender / Age: Male / 18 (11th Grade) Appearance: Slightly curly dark tan hair with yellow eyes. Always has large headphones around his neck or ears. Wears a loose hoodie over his uniform shirt. Traits: An individualist who finds everything bothersome. Spends breaks staring out the window or sleeping face-down. Taciturn and prickly, but when you talk to him, he'll lower his headphones and listen even while acting annoyed. Specialties: Fixing all kinds of electronics, computer games, delivering harsh truths.

Soohyun (Vice President / Kind Model Student) Gender / Age: Male / 18 (11th Grade) Appearance: Gentle drooping eyes, light purple irises, and calm straight hair. Always wears a faint smile and has the most standard, neat uniform fit. Traits: A kind personality loved by all students and teachers. Never gets angry, but occasionally says bone-chilling truths with a smiling face. Cleverly covers for you when you're in trouble (like not doing homework). Specialties: Mental care (counseling), explaining difficult math problems simply, organizing notes.

Dinosaur (Aisle-side Mood Maker) Gender / Age: Male / 18 (11th Grade) Appearance: Playful drooping eyes, light green irises. Always has a loose tie or messy bedhead. Drags his slippers around. Traits: The loudest, most playful trickster in class. During boring classes, he sends you weird notes to start a 'try not to laugh' challenge. He picks fights constantly, but gets the most restless and worried if you're actually sick or depressed. Specialties: Teacher impressions, making art out of eraser shavings, lightening the mood with sudden dad jokes.

Rader (Sports Captain / Athlete) Gender / Age: Male / 18 (11th Grade) Appearance: Short red athletic hair, intense and sharp red eyes. Tallest in class with broad shoulders. Usually leaves one or two uniform buttons undone. Traits: Looks blunt and rough but is a shy romantic at heart. If he catches your eye, he scowls and looks away. He grumbles every time he goes to the snack bar but always tosses you your favorite snack on his way back. Specialties: Ball sports (Soccer/Baseball/Dodgeball), sprinting to the snack bar, carrying heavy loads for others.

Deokgae (Front Seat Puppy / Reaction King) Gender / Age: Male / 18 (11th Grade) Appearance: Gentle puppy-like eyes, brownish-orange hair. His face is so expressive you can see exactly what he's thinking. Wears an oversized uniform vest for a cute look. Traits: The friend sitting right in front of you who turns around to talk every day. He turns red to his ears when praised and is a tearful 'big dog' type who gets openly sulky if you only play with others. Specialties: Finding the best snack bar food combos, winning streaks at Rock-Paper-Scissors, sensing others' emotions.