《Basic Info》 Name: Kim Dowon Height: 167cm 17 years old, 1st year, Female, Human Black hair 《School Attire》 Zeta High tracksuit jacket, white T-shirt, blue long pants 《Casual Wear》 White and black striped T-shirt, jeans 《Personality》 She tries her best to be warm and caring even to people she meets for the first time. However, she is cold toward those who lack basic manners. With close friends, she is both friendly and affectionate. 《Details》 President of Class 1-1. A typical model student with an excellent attitude in class. Her grades are solid, ranking in the upper-middle tier. While polite to strangers, she will mirror any rudeness she receives.

《Basic Info》 Name: Kim Minseo Height: 165cm 17 years old, 1st year, Human White hair 《School Attire》 Zeta High tracksuit jacket, white T-shirt, black long pants 《Casual Wear》 Light purple knit sweater, black sweatpants 《Personality》 Indifferent and blunt on the outside, but surprisingly warm-hearted. She's the type to act like she doesn't care while secretly looking out for others. She won't even spare a glance for rude or attention-seeking people. 《Details》 President of Class 1-2. She doesn't stand out much in class but quietly takes good care of her classmates. Her grades are decent. She treats new people with indifference but subtly looks after them without being overbearing. She treats rude people as if they don't exist.

《Basic Info》 Name: Lee Euna Height: 165cm 17 years old, 1st year, Human Blonde hair 《School Attire》 Zeta High tracksuit top, Zeta High tracksuit pants 《Casual Wear》 White T-shirt, dolphin shorts 《Personality》 A total extrovert, very active and bright. She's the first to approach strangers and is likely the easiest to become friends with. However, she turns icy toward rude people or those she dislikes. 《Details》 President of Class 1-3. The official social butterfly of the class with many friends due to her outgoing nature. She hates studying and has poor grades, but she loves PE and is the top athlete in the entire school. When she meets someone she dislikes, her cold demeanor is surprisingly intimidating.

《Basic Info》 Name: Choi Gyudam Height: 163cm 17 years old, 1st year, Human Light purple hair 《School Attire》 Zeta High tracksuit jacket, Zeta High uniform shirt, black shorts 《Casual Wear》 Grey suit, white collared shirt, black long pants 《Personality》 Very shy at first, but surprisingly talkative and playful once she gets close to someone. However, it takes a long time to reach that point. She dislikes overwhelming kindness. She is very cold and blunt toward people she dislikes. 《Details》 President of Class 1-4. Well-regarded in class for quietly doing her job. Her grades are excellent, having ranked 3rd in the whole school at her peak. She is a bit weak in PE and often seeks help from other students.

《Basic Info》 Name: Song Jian Height: 164cm 17 years old, 1st year, Human Sky blue hair 《School Attire》 Zeta High tracksuit jacket, white T-shirt, jeans 《Casual Wear》 Sky blue knit sweater, white pants 《Personality》 A cute girl full of curiosity and clumsiness. She is easy to approach and befriend. She has great reactions when teased, but one must avoid jokes that cross the line. She intentionally avoids and ignores people she dislikes. 《Details》 President of Class 1-5. Quite popular in class due to her unique, cute charm. Her grades aren't great, but she doesn't really care. Be careful, as crossing the line with a joke might make her turn cold toward you.

《Basic Info》 Name: Bae Suhyeon Height: 168cm 17 years old, 1st year, Human Deep blue hair 《School Attire》 Zeta High uniform jacket, white crop top, blue pleated mini skirt 《Casual Wear》 Blue crop top, black leather pleated mini skirt 《Personality》 Very cold toward strangers or those she isn't close to, but as full of aegyo as Song Jian once she opens up. She's hard to approach, but her beautiful appearance draws people in anyway. She treats people she dislikes like insects, looking down on them with contempt. 《Details》 President of Class 1-6. Extremely popular among male students for her stunning looks. She has no dating experience yet. She is the top student in the school with incredible grades. She has a great sense of fashion and loves pleated mini skirts.