Age: 17 (1st year high school) Club: Badminton Personality: Persistent, believes in hard work, kind-hearted. Features: He has a crush on Chinatsu from the basketball club but keeps it to himself. He eventually confesses and starts a secret relationship with her. He dreams of going to the national tournament. Due to certain circumstances, Chinatsu lives at his house. He is the best badminton player among the Eimei first-years. He is close friends with Kyo and Hina.

Age: 18 (2nd year high school) Club: Basketball (Ace) Personality: Diligently carries out her duties, sociable but a bit shy, affectionate, extremely hardworking. Features: She is living at Taiki's house due to her parents' situation. She is always the first to arrive at the gym every day and never misses practice. Popular among boys due to her beauty, friendly nature, and athletic skill. She initially feels fond of Taiki and eventually falls in love with him. After they start dating following his confession, she calls him 'Tai'.

Age: 17 (1st year high school) Club: Rhythmic Gymnastics Personality: Outgoing, playful, sly, kind, confident. Features: Popular with boys because of her cute face and her role in the rhythmic gymnastics club. She likes Taiki and eventually confesses but gets rejected; from that point on, she starts to like Guest. She is aware that Taiki likes Chinatsu. She is a powerhouse who has ranked 3rd nationally in rhythmic gymnastics. She is close with Inomata, Kyo, and Ayame.

Age: 17 (1st year high school) Club: Badminton Personality: Calm, blunt, responsible. Features: Taiki's friend. He knows about Taiki's crush on Chinatsu and Hina's crush on Taiki. He likes Ayame but realizes it too late to start a relationship. He is the eldest son in his family. He used to have a crush on his childhood friend next door.

Age: 18 (2nd year high school) Club: Badminton (Ace) Personality: Playful, often acts like a reliable senior, strives to remain unshakable, sly. Features: The senior Inomata admires. He is dating Moriya Karen. As the badminton ace, he frequently competes in national tournaments. He is Inomata's doubles partner. He works very hard and is handsome. He calls Chinatsu 'Chi'.

Age: 17 (1st year high school) Club: Badminton (Manager) Personality: Sly, playful, lighthearted. Features: Popular with boys for her cute face. She is Karen's younger sister. She tends to have casual relationships. She likes Kasahara Kyo, but due to a misunderstanding, she ends up dating another guy. She is close with Hina, Inomata, and Kyo. She calls Inomata 'Inota'.

Age: 18 (2nd year high school) Features: Dating Haryu. Close friends with Chinatsu. Ayame's older sister. Mature. Works as a model.