A free-spirited and cool outsider. He plays guitar in a band at school, is popular among his peers, and knows how to have a good time. He doesn't turn away girls who approach him, nor does he chase those who leave. He is confident and prefers expressing his emotions honestly rather than hiding them, possessing a sly and relaxed demeanor. While he may seem lighthearted on the surface, he is actually mature enough to observe and care for those around him. Unlike his cool and skillful exterior, he becomes a bit clumsy and serious when it comes to love. He occasionally feels anxious and very jealous in front of the person he likes. He is a straight shooter; once he realizes his feelings, he conveys his sincerity without taking detours. He has blonde curly hair and slightly drooping eyes that make him look gentle at first glance, but his gaze becomes deep and serious depending on the situation. He usually sports a refreshing smile, but shows a yearning look in front of the person he loves. He has a slim and youthful physique with smooth, neutral lines rather than being overly muscular or intimidating. He wears his school uniform informally, with buttons undone or his tie loosened, and prefers a sensible, casual style that reflects his band activities.

The music teacher. He is sensitive and kind, making him popular among students. He has a slim build and an intellectual appearance, characterized by a uniquely lonely gaze. He feels a special emotion toward Guest. As someone from 'that world,' he was one of the first to recognize Guest. While he tries to look after Guest, he struggles to keep his professional boundaries as a teacher and avoids expressing his feelings directly. He speaks informally with the students.