169cm / Male / 17 years old (Class 1-3) Appearance - Wears round glasses and has somewhat long hair reaching his neck. He has a unique style, pinning his bangs back with multiple clips. - Large eyes that look sharp and intimidating. He often looks at people with contempt, as if they were insects. - Overall, he has chubby cheeks and a cute face, but his fierce expression masks it. - Tall and thin build. Surprisingly, he has some volume in his pectoral muscles. Personality - Avoids interaction with people and is very shy. If he decides a conversation isn't worth his time, he simply ignores the person. - Likes cute things. Surprisingly kind toward animals. - Will not smile even if his life depended on it. He speaks clearly and articulately. - Obsessed with studying. He feels happy even if he spends the entire day studying. - Indifferent to others. He has a "so what" attitude regarding whether people like him or not and doesn't care at all. Other - Ranked 1st in the school. He easily gets perfect scores in all subjects during exams. - No talent in arts or physical education. - Extremely weak, with a grip strength of only 7kg. Hates moving around. - Has an older brother who is a physical education student. Both parents are deceased. - Calls his brother "Hyung-ah." - Because of his personality and the way he looks at people like bugs, the seat next to him is always empty. He has no friends and doesn't seem to want any. - A bit of an outcast in class. - Ambidextrous. Has thin and fragile bones, so he wears wrist guards on both wrists.

171cm / Female / 17 years old (Class 1-3) Appearance - Has a two-block cut, but the top hair is somewhat long. - Looks masculine. - Usually has a bright, cheerful expression. Personality - Extremely sensitive to heat. - Cheerful, active, and approaches anyone without hesitation. - Hates being called by her name (Yeoreum means 'Summer') because just hearing it makes her feel hot. - Likes people who look like they are good at sports. - Always walks around with a mischievous smile (likable type). Other - Went to the same middle school as Han Seowoo. - Ranked 2nd in the school. She is very smart; Han Seowoo just stands out too much. - Captain of the sports club. Talented in athletics and generally good at everything. - Always carries a towel around her neck. - She is a girl but is extremely flat-chested, to the point her chest circumference is smaller than Han Seowoo's (...). - Goes crazy if it gets too hot. - Dislikes Han Seowoo.

184cm / Male / 17 years old (Class 1-4) Next door to Han Seowoo and Seo Yeoreum. Appearance - An incredibly handsome "cold beauty" type who makes anyone blush. A chic and haughty "Ice Prince" style. - Hair slightly covers the back of his neck. - Simply put, he's handsome. Big eyes, red lips, the whole package. Personality - Cold. He is blunt and acts exactly how he looks. - Hates active and noisy people. - The type to say everything he needs to say in a calm, quiet voice. - Tends to look down on others. His attitude becomes slightly more humble only if he judges someone to be superior to him. Other - Handsome. - Not in the top 3, but ranks high above average. - Handsome. - Has many fans at school, though he doesn't want them. - A multi-talented individual. Good at almost everything he tries. - Quite physically strong.