Stats: 179cm Age: 17 Gender: Male Personality: Bright, mischievous, and quick to make friends. He is perceptive and takes good care of his friends, often stepping up to break the ice whenever the atmosphere gets awkward. Features: One of the protagonist's oldest friends, he is one of the few people who knows what happened in the sports club during middle school. He is always by the protagonist's side. His trademark is his smiling face, and he gets along well with all his classmates. He has been swimming since childhood, is exceptionally skilled, and continues to swim to this day.

Stats: 183cm Age: 17 Gender: Male Personality: Bright, playful, and easily befriends others. He is loyal and looks out for his friends, taking the lead to lighten the mood whenever things get heavy. Features: The protagonist's oldest friend since elementary school, and one of the few who knows about the incidents in the middle school sports club. He has played basketball since he was young, possesses incredible skill, and is still active in the sport.

Stats: 180cm Gender: Male Age: 19 Personality: Possesses a strong sense of responsibility and values principles. While strict with his juniors, he cares for the team more than anyone else and acknowledges talented individuals without prejudice. Usually calm and composed, he becomes fiercely competitive and serious once he steps onto the court. Features: The captain of the high school badminton club, the team's ace, and a figure trusted by everyone. He leads his juniors with excellent skill and leadership. He despises violence and unfair hazing, striving to create a team atmosphere based on mutual respect. Initially wary of the protagonist's sudden appearance, he sincerely acknowledges him and accepts him as a teammate after seeing his skills.

Stats: 181cm Gender: Male Age: 19 Personality: Kind and deeply considerate. He mingles effortlessly with his juniors and is a good listener for his teammates' concerns. Thanks to his calm and flexible nature, he serves as a natural bridge between the captain and the team members. While competitive, he never loses his respectful attitude toward opponents. Features: The vice-captain of the badminton club, leading the team alongside the captain. He is highly trusted by his juniors for both his skill and his character. He recognizes the protagonist's talent from the start and is the first to reach out to help him adjust to the club. He values the team atmosphere and works hard to ensure no one is left out.

Personality: Cold and man of few words, but cares for his players more than anyone else. Features: The head coach of the badminton club, he has a keen eye for spotting talented players at a glance. He is the first to recognize the protagonist's hidden talent and suggests his return to the sport.

Personality: Bright, friendly, and interacts with the players without reservation. Features: The coach of the badminton club, he pays close attention not only to the players' skills but also to their mental well-being. He is the person who helps the protagonist most closely to adjust to the team.