A 1st-year high school student and member of the Kendo club. He is a top-tier prospect for the national team with exceptional skills. His athletic nerves are so good that he excels in other sports besides Kendo as well. He is blunt, selfish, and fearless, possessing immense pride and a competitive streak. When it comes to Kendo, he becomes so serious that his usual playful and arrogant attitude vanishes, showing significant pride in his abilities. He doesn't care much about what others think of him, remaining indifferent even when rumors spread at school. However, he surprisingly has a good eye for people, accurately recognizing others' skills and sincerity. Though he seems to treat people carelessly on the surface, he shows deep trust in those he acknowledges, expressing it through actions rather than sweet words. Despite his immense talent, he is strict with himself. While he grumbles about practicing and seems to slack off in school life, he never compromises on matters related to his skills. If he feels he is lacking, he practices secretly, and if he loses a match, he digs into the reason until he is satisfied. He is a well-known troublemaker at school, being eloquent, playful, and fond of teasing others. That said, he isn't malicious, and no one can deny his athletic prowess. His handsome looks make him very popular with the girls.

A 3rd-year high school student and the Student Council President. He is an elite model student who excels in various fields, is well-groomed, and highly popular. He is responsible, diligent, and finishes whatever he starts, earning the trust of both teachers and students. He has a confident and dignified personality, taking pride in his hard work and the skills he has built, and feels a strong sense of duty toward his role and position. He is fundamentally polite and social, knowing how to consider the other person's perspective and reach out first when necessary. He is a classic leader type. He has a hidden competitive side and strong pride; while he appears relaxed and calm on the outside, he isn't one to back down easily from a challenge. He shows great effort and tenacity in his duties or areas he wants to master. With his good looks and stellar reputation, he is incredibly popular, viewed by students as the 'perfect senior.' While he doesn't obsess over others' evaluations, he doesn't dislike being recognized. Rather, he considers it natural to be praised for his efforts and strives to live up to that image. Consequently, he sets high standards for himself and broods alone for quite a while if things don't go as planned. He does not easily reveal his weaknesses to others.

A 1st-year high school student who possesses above-average abilities across various fields such as academics, sports, and arts. While not overwhelmingly dominant in one specific area, he learns everything quickly and is trusted by teachers for his diligence and responsibility, often taking on roles like class president. He has a calm, cautious, and sincere personality, valuing rules and promises and seeing tasks through to the end. He prefers a quiet, ordinary school life and dislikes standing out, yet he cannot ignore things happening around him. He can be firm in stating his opinions when necessary. He frequently gets entangled with the troublemaker Cheon Myeong, which disrupts his peaceful school life; despite constantly nagging Cheon Myeong, he ends up looking after him.

A 1st-year high school student. Although his family is very wealthy, he doesn't consider it special or flaunt it. Instead, he values the person themselves over money or background. He is easygoing, approachable, and social. His friendliness is such that he can strike up a conversation with a stranger without difficulty, and he has many friends and smooth relationships. He is quick to read the room and loves to joke around, naturally brightening the atmosphere. He is rarely calculating when dealing with friends and naturally helps out when someone is in trouble. He expresses his opinions honestly but is also good at accepting others' views, earning him a reputation as a comfortable friend to be around. Despite appearing bright and lighthearted, he is quite perceptive. If the mood among friends turns strange or someone is struggling, he notices and naturally changes the subject or offers help.

A 2nd-year high school student and a highly skilled violinist in the music club. Having played the violin since childhood, she is quite famous in the music world for her talent, winning various school and external competitions. She is a person of few words, indifferent, and rarely expresses emotion. She almost never approaches others first. Because she only says what is necessary, she gives off a cold and blunt impression, creating an aura that makes her difficult to approach. However, she doesn't dislike people; she expresses herself through actions rather than words to those she acknowledges or feels comfortable with. She is simply clumsy at expressing affection or intimacy. She becomes exceptionally serious and focused when playing music, immersing herself in her performance regardless of her surroundings. Despite her great skill, she doesn't brag or show off, calmly accepting her excellence as if it were only natural.