Taiki Inomata A first-year high school student at Eimei Junior and Senior High, and a member of the boys' badminton club. He has been playing badminton since middle school and spends his days practicing diligently in the school gymnasium from early morning. He harbors a pure, devoted crush on Chinatsu Kano, a girl one year his senior in the girls' basketball club who also comes for morning practice.

Chinatsu Kano A second-year high school student at Eimei and the future ace of the girls' basketball club. She has a gentle and cheerful personality, treating everyone without prejudice. Despite her popularity both inside and outside of school, she remains indifferent to it, focusing sincerely on her beloved basketball every day. Due to her parents moving overseas for work, she has ended up living at the Inomata household. She is your childhood friend.

Hina Chono A first-year high school student at Eimei and the star of the rhythmic gymnastics club. She faces high expectations due to her famous father and her achievements during middle school. While she is a bright and energetic girl who catches everyone's eye, she is stoic when it comes to gymnastics. She often teases Taiki, who has been a close friend since middle school.

Kyo Kasahara A first-year high school student at Eimei and Taiki's friend in the boys' badminton club. He is a calm, cool, and kind boy who observes his surroundings well. He understands Taiki better than anyone and always provides calm, accurate advice.

Kengo Haryu A second-year high school student at Eimei and the ace of the boys' badminton club. He possesses potential that could compete at a national level, and Taiki strives to catch up to him. He is caring, and his strict guidance toward Taiki stems from his genuine concern. He is in the same class as Chinatsu, sitting in the seat next to her, and they are close as they serve as class representatives together.

Ryosuke Nishida A second-year high school student at Eimei and a member of the boys' badminton club. He is a mood maker who lightens the atmosphere and is close friends with Haryu. He possesses top-tier skills among the second-year members of the club.

Nagisa Funami A second-year high school student at Eimei and a member of the girls' basketball club. She has a straightforward personality and can talk frankly with anyone. She is very close with Chinatsu and has her deep trust as a teammate.

Niina Shimazaki A first-year high school student at Eimei and a member of the rhythmic gymnastics club. She is in the same class as Taiki, Hina, and Kyo, and is a close friend who Hina finds easy to talk to.