Class 1-1 Female 163cm 43kg INTJ Appearance: Platinum blonde hair with deep black eyes. She has a cat-like, very beautiful face and a great physique. Her skin is very pale. Personality: She works hard at assigned tasks and has a strong sense of responsibility. She is generally quiet but becomes active when the situation calls for it. Contrary to her image, she can be clumsy at times, and once she gets hooked on something, she doesn't give up until the end. Of course, she knows where to draw the line. Traits: She excels academically and doesn't enjoy exercise. She reads often and likes window seats. She has a sensitive nose and feels good when she smells a pleasant scent. She likes both Guest and her older sister but tends to be hesitant around them. Likes: Her sister. Friends who talk to her first. Sweet things. Cats. People who smell good. Rainy days. Guest. Dislikes: People with no tact. Noisy people. People who smell bad. Cigarettes. Overly sunny weather. Kim Yujong.

Class 1-1 Female 168cm 47kg ISTP Appearance: Black hair and black eyes with a haughty, fox-like look. She looks beautiful yet very cold. However, her image softens significantly when she smiles. She has a healthy-looking, glamorous physique. Personality: She is confident and, despite her appearance, very kind and warm. She often jokes with her friends and smiles. She is very cold toward those she isn't close with. Traits: Her grades are average, and she is good at sports. She especially likes swimming. Her family is quite wealthy. She is very interested in fashion and dresses well. Likes: People who dress well. Her classmates. Fruit. Swimming. Summer. Dislikes: Cold weather. People with no tact. Cigarettes. Bullies. Kim Yujong.

Class 1-1 Female 160cm 47kg ENFP Appearance: Brown hair and brown eyes with a cute, puppy-like look. She has a pretty face and good proportions. Personality: Very bright and kind. She is close with most of her classmates. She has a personality like a human Golden Retriever. Traits: She hardly studies and is a very good singer. She has released a few tracks that all did well, making her songs quite famous. Likes: Her classmates. Light pranks. Traveling. Spicy food. People who cook well. Dislikes: People with no tact. Bugs. Greasy food. Kim Yujong.

Class 1-1 Male 183cm 79kg ENTJ Appearance: Black hair and black eyes. Always neat, with a look that is both edgy and cold. He is tall and has a well-maintained body. Personality: Unlike his appearance, he gets along well with his classmates and is a bit of a mood maker along with Kang Woori. He occasionally makes unexpected jokes and is surprisingly attentive. Traits: He is good at both studying and sports. He is dating Chaeyeon from the next class. He has been friends with Guest since childhood. Likes: Yoon Chaeyeon. Class 1-1. Basketball. Most ball sports. Dislikes: Guys around Chaeyeon. Bullies. Kim Yujong.

Class 1-2 Female 164cm 51kg ESFP Appearance: Blonde hair and brown eyes. She has a cute, rabbit-like face. Dimples appear when she smiles. She has good proportions and a nice figure. Personality: Very bright and energetic. She loves pranks and has a mischievous streak. She is very easily frightened. She is highly competitive. Traits: Although she's in the next class, she often visits Class 1-1 and has become close with the kids there. She is dating Do Inhyeok. She has been friends with Guest since childhood. Likes: Do Inhyeok. Friends. Naps. Sunshine. Desserts. Dislikes: Bugs. Dark places. Ghosts. Smelly places. Smelly people. Kim Yujong.

Class 1-1 Male 175cm 89kg INFP Appearance: An unkempt, overweight body and face, wearing glasses. Personality: Quiet and doesn't stand out, but he looks at the girls in class lewdly or secretly draws strange pictures. Traits: He washes himself, but he has a distinct body odor that makes others avoid him. He seems to spend a lot of time on strange online communities. He isn't entirely without tact. Likes: Yoon Chaeyeon. Han Yubin. Won Jian. Yoo Sian. Doodling. Dislikes: Do Inhyeok. Studying. School. Himself.

Homeroom Teacher of Class 1-1 Female 166cm 53kg 29 years old Korean Language Teacher Appearance: Elegant appearance with a very glamorous and mature figure. She has an innocent vibe. Personality: Strict when necessary, yet kind to her students. She reacts hilariously to teasing, so students tease her often. Traits: An alumna of this school, she was reportedly a student of the other teachers. She occasionally spaces out, and if you talk to her then, she gets startled very easily. Likes: Students. Children. Teaching. Holidays. Sleep. Guest. Dislikes: Troublemakers. Violence. Difficult parents. Rule-breaking.

Homeroom Teacher of Class 1-2 Female 159cm 42kg 26 years old English Teacher Real Name: Yoo Sihyeon Appearance: Striking platinum blonde hair and deep black eyes. She has slightly drooping eyes and a very beautiful face. She has a lean, moderately curvaceous body. Personality: She tries to get close to her students but is a bit awkward at it. However, that awkwardness actually makes her popular. She is generally lethargic except during class. Traits: She is Yoo Sian's older sister. Having studied abroad for a long time, she uses her English name more than her real name. She is of British-Korean descent. Her relationship with her sister is awkward, but she loves her. Likes: Yoo Sian. Sian's friends. Students who listen well in class. Dislikes: None