Gender: Male Age: 17 Height: 178cm Club: Soccer Club Grade/Class: 1st Year Class A Traits: He possesses exceptional decisiveness and drive, often taking on leadership roles. However, his lack of fear and pure curiosity sometimes lead to eccentric accidents. He is frequently paired with Lee Yuri.

Gender: Female Age: 17 Height: 167cm Club: Literature Club Grade/Class: 1st Year Class A Traits: She is a model student respected by everyone for her constant composure and consideration. She is knowledgeable even in unconventional areas due to her massive reading habits across all genres. She is frequently paired with Nam Dongjin.

Gender: Male Age: 17 Height: 184cm Club: None Grade/Class: 1st Year Class A Traits: Once his pride is ignited, he sees things through to the end, but he generally finds everything a hassle. Even if he makes a mistake or a problem arises, he adapts easily because he thinks regretting or agonizing over it is a waste of energy. His eyes light up when talking about bikes. He is often paired with Jeong Yeseul. He once got knocked out by a soccer kick from Jeong Yeseul. He once told her that her whole body is a weapon (he didn't get hit for saying that specific line, though).

Gender: Female Age: 17 Height: 176cm Club: None Grade/Class: 1st Year Class A Traits: She has extraordinary athletic nerves that the sports clubs coveted, but they all gave up due to her uncontrollable personality. She persuades others through self-conviction rather than logic. She is often paired with Kim Junho.

Gender: Male Age: 17 Height: 175cm Club: None Grade/Class: 1st Year Class A Traits: As a transfer student who arrived mid-semester, he received a lot of attention, but he maintains an unapproachable aura by responding with cold indifference. He doesn't hang out with anyone, and there are sightings of him wandering around various parts of the school. He is frequently paired with Go Narae.

Gender: Female Age: 17 Height: 164cm Club: Art Club Grade/Class: 1st Year Class B Traits: She is clumsy at approaching others or receiving kindness. She hates being looked down upon and is often seen fighting or getting angry. She believes she enjoys being alone. She has frequent conflicts with the siblings Cho Yeji and Cho Yeonbin due to past events. She is frequently paired with Jeong Dongseok. She once ran into him at night, and the PE teacher Jang Daehan misunderstood and asked if they were on a date.

Gender: Male Age: 17 Height: 171cm Club: Board Club Grade/Class: 1st Year Class B Traits: He listens very well to his brother Kwak Jaehyeong, who is three years older. Kwak Jaehyeong is the only one who can suppress Junhyeong's chaotic 'elementary kid' mode. Due to his uncontrollable mischievousness, he had a chase with security guards on the first day of the entrance ceremony. As a result, he has become a master of running away.

Gender: Female Age: 17 Height: 155cm Club: Cheerleading Club Grade/Class: 1st Year Class D Traits: She is the type to gain energy by watching others get energized by her cheering. She loves that virtuous cycle of encouragement. Every morning, she wakes up by playing a random cheering song and dancing to the choreography. Her recent goal is to improve her physical stamina.

Gender: Female Age: 18 Height: 165cm Club: Archery Club Grade/Class: 2nd Year Class D Traits: She starts her day with meditation. Having possessed exceptional focus and intuition since childhood, she followed recommendations to become an archer. However, because her attention is mostly directed inward, she can be insensitive in relationships with others. She becomes very faithful when she feels a sense of duty. The being she feels closest to is a turtle she raised as a child. She won a trophy at a school archery competition but once used it to crack walnuts.

Gender: Male Age: 18 Height: 194cm Club: Baseball Club Grade/Class: 2nd Year Class B Traits: Having never experienced failure, he is confident in everything he does. Many students joined the baseball club after seeing his play. He is naturally gifted at encouraging teammates and brightening the atmosphere. Due to this personality, he has a large fan base, but he has never served as the captain.