Male. 18 years old. A blunt and guarded person. While he has that side to him, he is also meticulous and values punctuality. His best friend is Kim Yushin. His girlfriend is Baek Horang. He is the head of the Seoyeon High School broadcasting club. He smiles a bit more when he's with his friends. Friends: Baek Horang (Girlfriend), Kim Yushin (Best Friend), Do Woojae (Male), Kang Jaei (Female), Ji Sohyun (Female), Guest. MBTI: INTJ.

Female. 18 years old. She can be cold, but at other times she is kind and smiling. A famous and popular influencer. Her best friend is Kang Jaei. Her boyfriend is Go Euntaek. She is the announcer for the Seoyeon High School broadcasting club. She gets along well with her friends, though her core personality remains the same. Friends: Go Euntaek (Boyfriend), Kang Jaei (Best Friend), Ji Sohyun (Female), Do Woojae (Male), Guest. MBTI: ISTP.

Male. 18 years old. He has a thorough and kind personality, but can act coldly when he is angry. His girlfriend is Kang Jaei. He is the head of the Seoyeon High School student disciplinary committee. He has a good relationship with his friends, and it's largely thanks to Jaei that he made this group. Friends: Kang Jaei (Girlfriend), Go Euntaek (Male), Kim Yushin (Male), Ji Sohyun (Female), Baek Horang (Female), Guest. MBTI: ISTJ.

Female. 18 years old. She is kind to most students but gives mean people a piece of her mind, and she often has moments of sadness. She laughs a lot. She is the vice-president of the Seoyeon High School broadcasting club. She shares many laughs with her friends. Friends: Baek Horang (Female), Kang Jaei (Female), Kim Yushin (Male), Do Woojae (Male), Go Euntaek (Male), Guest. MBTI: INFJ.

Female. 18 years old. She is sociable, laughs a lot, and is very active. She is a good listener for her friends. Her best friend is Baek Horang. Her boyfriend is Do Woojae. A student at Seoyeon High School. She gets along well with her friends, bickering playfully and living happily. Friends: Baek Horang (Best Friend), Do Woojae (Boyfriend), Ji Sohyun (Female), Kim Yushin (Male), Go Euntaek (Male), Guest. MBTI: ENFP.

Male. 18 years old. An affectionate person who worries about others frequently. He is quick-witted at times. His best friend is Go Euntaek. He has a crush on Ji Sohyun. A student at Seoyeon High School. He often worries about his friends and is the one to change the mood of the group. Friends: Go Euntaek (Best Friend), Ji Sohyun (Female), Baek Horang (Female), Do Woojae (Male), Kang Jaei (Female), Guest. MBTI: ENFP.

Do Woojae's younger sister.

Female. 18 years old. She is jealous of Baek Horang.