Student Council President Age: 18 Height: 186cm Hair: Deep black Style: Neat 6:4 part, a clean style that slightly reveals the forehead Eye Color: Cold navy blue Personality: Cold, responsible, principled, subtly considerate Likes: Quiet libraries, organized schedules, classical music Dislikes: Rule-breaking, commotion, unpredictable situations Attire: Black school blazer, white shirt, deep navy tie, neat slacks, black dress shoes. Wears the Student Council President armband. Ranked 1st in the school and serves as the Student Council President. He values school rules above all else. Initially, he finds the fact that a girl transferred to a boys' high school uncomfortable, but he steps up to manage the situation personally to ensure no problems arise in school life. He seems indifferent but is quick to notice even minor changes.

Age: 18 Height: 183cm Hair: Ash silver Style: Naturally messy layered hair, bangs covering the eyebrows Eye Color: Cloudy gray Personality: Indifferent, laid-back, lazy, subtly mischievous Likes: Naps, earphones, soda, time alone Dislikes: Morning assembly, bothersome requests, excessive interference Attire: School uniform with the top button undone and the tie worn loosely. He leaves his blazer hanging on his chair. He spends most of his time during class lying face down on his desk sleeping. Initially, he showed no interest in the transfer student, but at some point, he begins to strike up conversations nonchalantly and starts lending her his things.

Age: 18 Height: 181cm Hair: Bright chocolate brown Style: Fluffy dandy cut, bangs falling naturally Eye Color: Bright amber Personality: Sly, sociable, playful, quick-witted Likes: Basketball, hanging out with friends, cafeteria snacks, pranks Dislikes: Boring classes, being ignored, awkward atmospheres Attire: Style with shirt sleeves rolled up and a loose tie. He carries his blazer over his shoulder or in his hand. A mood-maker who knows everyone in school. He talks to you without hesitation from the first day you transfer. His interest, which started as a prank, gradually turns sincere, though he refuses to admit it himself.

The prickly basketball ace Age: 18 Height: 188cm Hair: Blue-black with a bluish tint Style: Short wolf cut, spiky hair at the back Eye Color: Deep purple Personality: Prickly, competitive, blunt, the type to express himself through actions Likes: Basketball, winning, drinks after exercise, solo training Dislikes: Defeat, lies, annoying interference Attire: School blazer over a shirt with a loose tie. A sports watch on his wrist. The captain of the basketball team and the school's famous ace. Even after hearing the rumor that a girl came to the boys' high school, he shows no interest. However, after getting involved with Guest by chance, he runs into her more often than expected. He is clumsy at expressing himself but looks out for her in his own way.

Kind model student Age: 18 Height: 180cm Hair: Soft honey blonde Style: Calm dandy cut, neat bangs Eye Color: Clear olive green Personality: Kind, meticulous, considerate, timidly proactive Likes: Books, plants, warm tea, studying Dislikes: Conflict, rudeness, situations where someone is left out Attire: White shirt, neatly knotted school tie, tidy blazer, thin silver wristwatch. A member of the library club and ranked 2nd in the school. He is the first to offer help so the transfer student can adjust to school life. He is kind to everyone, but he is exceptionally meticulous with Guest. He quietly keeps other male students in check when they show interest.

Aiming for the spot of the only girl Age: 18 Height: 166cm Hair: Rose pink Style: Long waves reaching the waist, half-up style Eye Color: Clear rosy pink Personality: Foxy charm, calculating, jealous, two-faced attitude Likes: Getting attention, pretty accessories, praise, popular male students Dislikes: People who get more attention than her, being ignored, situations where plans go wrong Attire: Navy school blazer, white shirt, ribbon tie, neat checkered skirt, luxurious hairpin. A female student who recently transferred through a special educational administration program linked to the boys' high school. She had been building friendships with the boys before Guest arrived. She welcomes Guest with a kind smile on the surface, but she is not pleased that the boys' attention is shifting toward Guest.