School: Eimei High School Year: 1st Year High School Club: Boys' Badminton Club Crush: Chinatsu Kano Personality/Traits: A hard worker who is very serious about badminton. Straightforward with the person he likes. Clumsy but sincere. The type who can work even harder thanks to Chinatsu's influence. Best friends with his childhood friend Hina Chono. Close friends with Kyo Kasahara, a teammate in the badminton club. Relationship with Chinatsu: Initially, it's Taiki's unrequited love for Chinatsu. Taiki falls in love at first sight. While admiring Chinatsu, whom he meets every morning in the gym, he becomes even more dedicated to badminton. They end up living together. Chinatsu moves into Taiki's house as a lodger, and the distance between them closes rapidly. They begin to see sides of each other they don't show at school. Chinatsu starts to become aware of Taiki. Chinatsu didn't see Taiki as a romantic interest at first, but as she experiences his single-mindedness and kindness, she gradually begins to see him as someone special.

School: Eimei High School Year: 1st Year High School Club: Boys' Badminton Club Position: Taiki's doubles partner Personality: Calm, sharp-witted, and a keen observer of his surroundings. Traits: Very perceptive regarding Taiki's love life, often providing accurate, sharp commentary. Relationship with Taiki: Best friends since middle school and the person who understands Taiki best. Relationship with Ayame Moriya: Kyo → Ayame: Kyo is naturally cautious about romance and can be dense about his own feelings. However, he gradually begins to change through his interactions with Ayame.

School: Eimei High School Year: 1st Year High School Club: Rhythmic Gymnastics Club Personality: Cheerful and strong-willed, but a devoted and delicate girl when it comes to love. Relationship with Taiki: Best friends and childhood friends since middle school. Romance: She falls in love with Taiki and actively expresses her feelings. Even knowing Taiki likes Chinatsu, she becomes unable to suppress her own emotions.

School: Eimei High School Year: 1st Year High School Club: Badminton Club Manager Sister: Karen Moriya Appearance: Characterized by black to dark blue twin-tails and a snaggletooth. Personality: Cheerful and uninhibited, the type to say whatever is on her mind. Traits: Often calls people by nicknames, specifically calling Taiki "Inota." Views on Romance: Quite free-spirited. If confessed to, she's the type to "try dating once" even if she doesn't like the person yet. Relationship with Kyo Kasahara: Ayame → Kyo: Ayame is quite proactive toward Kyo. She becomes conscious of him and doesn't hide her affection in their interactions.

Year: 2nd Year High School School: Eimei High School Club: Girls' Basketball Club Traits: In addition to her basketball skills, she has a personality and star quality that makes her a popular "unattainable flower" both inside and outside school. Personality: Cheerful, kind, serious, and hardworking. Quite clumsy when it comes to romance. Relationship with Taiki: A senior one year above him. They become close through morning practices, and due to certain circumstances, she ends up living at the Inomata household. Gradually, Chinatsu begins to see Taiki not just as a junior, but as someone special.

School: Eimei High School, Boys' Badminton Club Year: 2nd Year High School Position: Ace of the boys' badminton club Skill: National level Personality: Strict and stoic. While he gives Taiki spartan training, he is actually quite caring. Relationship with Chinatsu: Classmates who sit next to each other. They are close as classmates. Relationship with Taiki: A senior who strictly trains Taiki. He has high expectations for Taiki's growth. Girlfriend: Karen Moriya. They met at a swimming school in 5th grade and have been dating since. Hobbies/Traits: Loves traveling. In his childhood, he took lessons in piano, swimming, cram school, and calligraphy.

School: Eimei High School Year: 2nd Year High School Club: Boys' Basketball Club Position: Central member of the boys' basketball club Background: A returnee who came back from studying abroad in America. Personality: Has a bright and slightly quirky personality, able to communicate frankly and closely with anyone. Human Relations: Belongs to the same basketball club as the heroine, Chinatsu Kano, and harbors feelings for her. Relationship with Taiki Inomata: Kazuma Matsuoka and Taiki Inomata are "rivals in love" over Chinatsu Kano as well as "comrades through basketball."

Age/Year: 3rd Year High School Affiliation: Girls' Basketball related Relationship with Chinatsu: Former teammate from mini-basketball days. Personality: Can be somewhat twisted. Traits: A talented player blessed with basketball skills. Chinatsu's Evaluation: A player Chinatsu admired. Past: Moved away due to family circumstances and became estranged from Chinatsu. Including spoilers, the biggest reason Yumeka grew to dislike Chinatsu is her "inferiority complex toward Chinatsu and complex feelings regarding basketball." However, it's not that Yumeka simply hates Chinatsu. During their mini-basketball days, Yumeka played together with Chinatsu. Yumeka had basketball talent, and Chinatsu admired her. However, Yumeka began to harbor complex feelings toward basketball amidst her relationship with Chinatsu and changes in her own environment. The fact that "I have more talent, yet Chinatsu is more loved by those around her and continues basketball straightforwardly" became a major complex for Yumeka. Therefore, her admiration for Chinatsu gradually turned into jealousy and rebellion. In other words, rather than "hating her because Chinatsu did something bad," it's easier to understand it as Yumeka's own setbacks and inferiority appearing as hostility toward Chinatsu.