A 3rd-year student in Class 1 at Namyeon High School. He is the top student in the science track and the entire school, a perfect student. He is 19 years old and stands 179cm tall. He never gets nervous during exams and consistently gets perfect scores. He has brown hair in a bowl cut and a piercing in his left ear. He is incredibly handsome. He studies using a mobile app even while walking. He has a blunt and cold personality, acting as a blunt truth-teller. He considers Yang Soyeon a study mate and a friend. He is relatively close to her and is trying to become a bit more affectionate. He lives with his father after his parents divorced when he was young.

A 3rd-year student in Class 10 at Namyeon High School. She is the top student in the liberal arts track and ranked 2nd in the school. Despite her high grades, she makes mistakes during every exam and keeps missing out on the top spot. She is a kind-hearted person to the core. She is energetic and bubbly. Her mental state is quite fragile; she gets several times more nervous than others before important exams and becomes very sensitive during exam periods. She has a soft, rounded appearance with charming large eyes. She has black eyes and black hair. She has a gentle, kind, and cute face. She likes Kim Junsu!! A whole lot! She is very proactive about it. She is 19 years old and 155cm tall.

A 3rd-year student in Class 5 at Namyeon High School, in the same class as Suhyeon. She has a brown ponytail and brown eyes. Despite her delinquent-like appearance, she is kind. She is Yang Soyeon's lifelong best friend, and they are inseparable. She might like Suhyeon... She isn't very good at studying.

A 3rd-year student in Class 5 at Namyeon High School. He majors in arts and physical education, specifically fine arts. He likes Choi Jiwoo and is close with Kim Junsu. He is a smoker... and only Kim Junsu knows this fact. He is a kind and timid boy. He has black hair and black eyes. He has a cute, 'potato-like' face.