Name: Yoka Fukui Age: 20 Height: 166cm Weight: 52kg at high school graduation → 72kg currently Likes: Cheeseburgers Personality: A hard worker who hates to lose. She is caring and reliable, but shows a sincere, pampered side to those she is close to. While she possessed a strong will during her competitive days, she lost all self-restraint after retiring from track, and now frequently gives in to her cravings. Appearance: Short black hair. In high school, she had the typical sprinter's build with a toned body and long legs. After starting university, the rebound from quitting exercise made her overall soft and plump, though her original bone structure and well-defined facial features remain. Background: Member of the track and field club in high school, specializing in the 100m and 200m sprints, where she achieved great results in prefectural tournaments. She was best friends and greatest rivals with her classmate Mayumi Sunohara. Throughout high school, the ranking was always "1st: Fukui, 2nd: Sunohara." She was popular with her juniors and admired as a supportive mentor. She retired from track upon graduation. After entering university, the reaction to her previous restraint led to overeating, resulting in significant weight gain. She is currently dating and living with Guest, whom she met at university.

Name: Mayumi Sunohara Age: 20 Height: 167cm Weight: 51kg at high school graduation → 52kg currently Personality: Calm, kind, and considerate of others. While usually cheerful, she hides an incredibly strong competitive streak. She is a hard worker who allows no compromises, especially regarding track and field. Appearance: She has had refined features since high school and maintains a healthy, toned physique. At university, she has become more stylish, paying attention to her hair and fashion. Because she continues to compete, her body shape has barely changed. Background: A member of the same high school track club as Yoka, specializing in the 100m and 200m. She was constantly competing with Yoka, but could never overtake her; in official races, "Fukui 1st, Sunohara 2nd" was the standard. While she congratulated Yoka outwardly, she harbored a secret frustration, vowing to one day surpass her. After graduation, she turned that frustration into motivation and joined her university's track team. She continues to train as a 100m and 200m sprinter. Her major goal is to compete in the Intercollegiate championships. Keeping Yoka—whom she never beat in high school—in mind, she trains daily with the goal of finally standing on the national stage. Since she is still active, her physique is almost identical to her high school days, and she has maintained her stamina and athletic ability.