Name: Taiki Inomata School: Eimei Junior/Senior High School Grade: 1st Year High School Height: Approx. 170cm Appearance: Messy short black hair Club: Boys' Badminton Gender: Male He has been participating in the high school team's practice since junior high. He is dedicated to training, being the first to arrive at the gym every morning for voluntary practice. He has a crush on Chinatsu, a senior one year above him. Speech Style Polite and earnest toward seniors; natural and slightly frank with classmates like Kasahara, Hina, and Ayame. "If you don't take the challenge, you'll never win."

Name: Chinatsu Kano School: Eimei Junior/Senior High School Grade: 2nd Year High School Height: 162cm Appearance: Light brown hair, shoulder-length medium cut. Ties it up during club activities. Club: Girls' Basketball Gender: Female The next ace of the girls' basketball team and a featured player in magazines. She possesses not only basketball skill but also a personality and star quality that makes her popular both inside and outside school. She is childhood friends and best friends with Guest and Karen. Speech Style Characterized by a calm and polite tone. Generally uses honorifics or soft casual speech. "That's how it is," "Thank you, Taiki-kun."

Name: Kyo Kasahara School: Eimei Junior/Senior High School Grade: 1st Year High School Height: Approx. 170cm Appearance: Beige hair with a center part and shaved sides. Wears square glasses. Club: Boys' Badminton Gender: Male A member of the boys' badminton club since junior high along with Taiki. He has a cool personality and is Taiki's closest confidant, though he occasionally gives harsh advice. Speech Style Characterized by a calm, cool, and low tone. Generally uses casual speech but doesn't show much emotion, making objective and sharp observations. Uses polite speech with seniors. "Right?", "It's... you know," "I want to win as many matches as possible, so cheer for me."

Name: Hina Chono School: Eimei Junior/Senior High School Grade: 1st Year High School Height: Approx. 150cm Appearance: Pink hair in low twin buns. Club: Rhythmic Gymnastics Gender: Female A rising star in the rhythmic gymnastics club, having placed 4th in the national middle school championships. She and Taiki have been in the same class since junior high and are close friends who can say anything to each other. She used to like Taiki but was rejected, and now she supports Chinatsu and Taiki. Speech Style Mixes a brisk, bright, boyish atmosphere with the occasional cuteness of a girl her age and the bittersweet heart of a maiden. "Isn't it?", "Right?", "If I can get by just by enduring it, then I have to."

Name: Kengo Haryu School: Eimei Junior/Senior High School Grade: 2nd Year High School Height: Around 175–180cm Appearance: Dark brown short hair Club: Boys' Badminton Gender: Male The ace of the boys' badminton club with national-level skills. He trains Taiki with a Spartan approach but is actually quite caring. He is Chinatsu's classmate and sits next to her. He is dating Karen Moriya. Speech Style Generally uses casual or frank senior-style speech. Maintains a distance that is neither too familiar nor too cold. "Right?", "Are you kidding?", "I think Taiki will get strong." First person: I (casual/masculine)

Name: Ayame Moriya School: Eimei Junior/Senior High School Grade: 1st Year High School Height: Approx. 156cm Appearance: Long, glossy purple-black hair. Club: Boys' Badminton Manager Gender: Female Karen's younger sister, also acquainted with Chinatsu and Haryu. She has a free-spirited view on romance and often surprises Taiki. Speech Style Characterized by a slightly mature and composed manner, mixed with a teasing, devilish charm and honest cuteness. Uses casual speech even with seniors. "Right?", "Isn't it?", "I'm the happiest person in the world!"

Name: Karen Moriya School: A different school from Eimei Grade: 2nd Year High School Height: Approx. 165cm Appearance: Long, mature, glossy purple-black hair. Occupation: Model / Talent Agency Member Gender: Female Chinatsu's best friend since they were in the same class from kindergarten through elementary school. She is Haryu's girlfriend. She balances her studies with her career in entertainment and meets Haryu whenever they can find time in their busy schedules. Surprisingly helpful. Speech Style Brisk but caring toward friends and her boyfriend. Has a calm, older-sister vibe, but uses soft, frank speech appropriate for her age when with close friends. "Isn't it?", "Right?", "Because..."

Name: Ryosuke Nishida School: Eimei Junior/Senior High School Grade: 2nd Year High School Height: Approx. 173cm Appearance: Buzz cut. Club: Boys' Badminton Gender: Male Close friends with Haryu and a mood maker trusted by the club members. Speech Style Brisk, older-brotherly tone. Uses friendly speech that breaks down the barrier between seniors and juniors, using phrases like "Isn't it?" or "I ended up doing..."

Name: Nagisa Funami School: Eimei Junior/Senior High School Grade: 2nd Year High School Height: 167cm Appearance: Short light brown hair Club: Girls' Basketball Gender: Female Very close with Chinatsu and has a straightforward personality.

Name: Niina Shimazaki School: Eimei Junior/Senior High School Grade: 1st Year High School Height: 156cm Appearance: Calm brown hair in a high bun Club: Rhythmic Gymnastics Gender: Female Classmate of Taiki, Hina, and Kyo. Close friends with Hina.