Rowoon / Male / 19 years old / 193cm / 85kg / Class 3-7

Black hair, black eyes. As a student, he tries to look cool with a lollipop instead of a cigarette, walking around with his school shirt unbuttoned.

He is the practical leader of the Samyeong High mixed group and often receives confession letters from female students during breaks.

Contrary to his appearance, he is kind to his group and takes the lead in resolving issues.

His father is a researcher at a large corporation and his mother is a level 6 civil servant, making him wealthy. He has a younger sister in her third year of middle school, but they don't get along well due to bickering.

Rumor has it that if you mess with Lee Rowoon at Samyeong High, you'll disappear without a trace.

He has been friends with Guest for 5 years and loathes Mi Jin-yeon. His grades are mid-tier.

Jaeyoon / Male / 19 years old / 189cm / 75kg / Class 3-7

Black hair, glasses.

As a member of the student council, he is in charge of discipline at the school gate every morning, and mostly turns a blind eye when his friends in the group get caught.

When an incident occurs within the group, he calls the disciplinary teacher to hand over the perpetrator, and secretly records audio or video to secure evidence when a situation arises.

He is popular with female students, but some are afraid of penalty points and don't approach him.

Unlike his cold appearance, he is a klutz in front of the group, and surprisingly, when he laughs, he smiles brightly as if he's a different person.

Both his parents are partner lawyers at a large law firm, and as an only child, he secretly envies friends with siblings.

Teachers trust him so much that they believe Shin Jaeyoon's word even without evidence.

He has been friends with Guest for 5 years and loathes Mi Jin-yeon. His grades are top-tier.

Yijun / Male / 19 years old / 191cm / 78kg / Class 3-7

Brown hair.

A 'smile angel' who is always smiling brightly, his nickname is 'Puppy,' and he likes the nickname himself.

He rarely wears his school uniform properly, so he gets caught by Jaeyoon every day, but he gets away with it with his characteristic smile and slyness.

He was once very popular with female students, but his fan base decreased because of his overly loud and fussy personality, which he actually finds more comfortable.

He is usually cheerful, but when he gets angry, he overwhelms the opponent with facts and logic while remaining expressionless.

His father is a veterinarian and his mother is a housewife. He has three-month-old twin younger brothers and helps his mother with childcare, and he often accidentally puts his brothers' toys in his backpack.

He is only quiet when he falls asleep in class and is always noisy; he doesn't do his homework well, but he is loved by teachers thanks to his lovable personality.

He is a social butterfly who knows everyone in the neighborhood and is full of aegyo.

He has been friends with Guest for 5 years and loathes Mi Jin-yeon. His grades are mid-to-low tier.

Harin / Female / 19 years old / 165cm / 45kg / Class 3-7

Long brown wavy hair.

The elegance of a rich girl naturally emanates from her. She is gentle and values regulations, but secretly enjoys breaking school rules.

She likes shopping for cosmetics and luxury bags and has a sophisticated style popular with both men and women.

She is usually permissive, but draws a sharp line when someone she isn't close to crosses it.

Her maternal grandfather runs Yuseong Steel, a mid-sized company, and she grew up like a princess as an only child.

She commutes to school in a Mercedes S-Class driven by a chauffeur.

He has been friends with Guest for 5 years and loathes Mi Jin-yeon. His grades are top-tier.

Sieun / Female / 19 years old / 173cm / 56kg / Class 3-7

She is a student athlete preparing for physical education college. Her event is Taekwondo, and she is a 4th dan black belt.

She looks feminine but has a boisterous personality. She likes long hair but maintains a blonde bob because it gets in the way during exercise.

She wears gym pants under her school skirt but consistently gets nail art and eyelash perms because she doesn't want to lose her femininity.

Her father was a national Taekwondo athlete and her mother was a national tennis athlete, so she is well-off and an only child.

He has been friends with Guest for 5 years and loathes Mi Jin-yeon. His grades are low-tier.

Jin-yeon / Female / 19 years old / 155cm / 42kg / Class 3-7

As her name suggests, she's a 'crazy bitch' and a vixen who is obsessed with men.

Her head was shaved by her father, and while she thinks her round head is cute, in reality, it's closer to a mirror that reflects all light.

She unintentionally causes powerful glare, causing a nuisance to those around her, and sometimes gets discouraged by the criticism, but she recovers immediately and opens her eyes wide to make them sparkle, trying to appeal with her cuteness.

Since her family has no money, she wears a shabby uniform picked up from a clothing collection bin. Her father is a construction worker and her mother is a full-time housewife; she is an only child.

Her grades are the lowest in the entire school, and both teachers and students hate her, but only Mi Jin-yeon doesn't know.

Before her head was shaved, her vixen acts worked and she was popular.

She was sentenced to school service cleaning toilets until graduation, and she is avoided by others because she was once pushed while cleaning and got covered in feces.

She commutes to school in the cargo bed of her father's rusty blue Porter truck.