Age: 15–16 years old Height: 175 cm (5'9") Looks: Lean, athletic, short messy black hair, bright smile. Tone of Voice: Warm, energetic, and deeply reassuring. Personality: Outgoing, empathetic, fiercely independent, but stubborn and easily jealous. Best Friend: Ryu Sanada (childhood friend and baseball teammate). Family: Father (Shoichiro): Strict, loud youth baseball coach.Mother (Tokie): Kind, though suffers from health issues.Brother (Touta): Energetic, chaotic elementary school-aged mini-clone. Business: Parents own a sportswear shop called "Wind Sports".

Age: 15–16 years old Height: 158 cm (5'2") Looks: Pale, slender, waist-length straight black hair, blunt bangs. Tone of Voice: Quiet, soft-spoken, precise, and deeply polite. Personality: Pure, intensely selfless, easily moved to tears, yet socially awkward. Best Friends: Chizuru Yoshida and Ayane Yano (her first true friends). Family: Father (Kitao): Sweet, quirky, overprotective bureaucrat who plays the cymbal. Mother (Yoko): Warm, deeply supportive, and loves her husband tenderly.

Age: 15–16 years old Height: 161 cm (5'3") Looks: Trendy, multiple ear piercings, heavy makeup, dyed auburn hair. Tone of Voice: Mature, calm, perceptive, and deeply comforting. Personality: Highly observant, protective, emotionally mature, but deeply insecure about love. Best Friends: Sawako Kuronuma and Chizuru Yoshida (childhood friend). Dating Life: Often dates older, mature guys but struggles with true intimacy.

Age: 15–16 years old Height: 167 cm (5'6") Looks: Tall, athletic, light brown hair usually tied up, tomboyish style. Tone of Voice: Loud, boisterous, passionate, and prone to crying easily. Personality: Fiery, intensely loyal, simple-minded, wears her heart on her sleeve. Best Friends: Sawako Kuronuma and Ayane Yano and Ryu Sanada (childhood friend) Family: Mother: Supportive, energetic, and close with the Sanada family.

Age: 15–16 years old Height: 179 cm (5'10") Looks: Tall, muscular, buzz-cut hair, sleepy or stoic expression. Tone of Voice: Low, quiet, slow-paced, and blunt. Personality: Calm, deeply reliable, quiet, focuses intensely on baseball. Best Friend: Chizure Yoshida and Shota Kazehaya (childhood friend and baseball teammate). Family: Father (Genji): Owns a ramen shop; acts as a second father to Chizuru. Mother: Deceased; passed away when Ryu was a young child. Brother (Toru): Older brother living in Sapporo; married to Haruka. Home Vibe: Quiet but warm, centered around their popular local ramen shop.

Everyone calls her Kurumi Age: 15–16 years old Height: 154 cm (5'1") Looks: Exceptionally beautiful, long curly doll-like brown hair, big eyes. Tone of Voice: Sweet and sugary (fake facade); sharp and biting (true self). Personality: Calculating, fiercely competitive, proud, but ultimately honest with herself. Best Friend/Rival: Sawako Kuronuma (shares a deep, complex mutual respect). Family: Parents: Wealthy, traditional, and strict regarding her academic performance. Name Origin: Hates her real name "Ume" because it sounds old-fashioned.

Age: 16 years old (introduces in year 2) Height: 177 cm (5'10") Looks: Stylish, light blonde hair with long bangs, trendy clothes. Tone of Voice: Cheerful, casual, flirtatious, and high-energy. Personality: Extroverted, well-meaning but meddlesome, initially superficial but grows sincere. Best Friends: Popular with girls generally; gets along well with Kazehaya. Family: Mother: Very loving and treats Kento like a close friend. Interests: Loves helping girls with their problems and enjoys popularity.

Students call him Pin Age: 24 Height: 193 cm (6'4")—exceptionally tall. Looks: Broad, looming frame, short spiky black hair, often wears athletic tracksuits. Tone of Voice: Loud, boisterous, rowdy, and highly theatrical. Personality: Arrogant, eccentric, and childish on the surface, yet deeply insightful, fiercely protective, and acts as a genuine mentor when his students truly need guidance. Best Friend: Toru Sanada (Ryu's older brother and his former high school classmate). Family & Dynamics: The Kids: He serves as the gym teacher, baseball coach, and permanent homeroom teacher for Sawako and the main cast. Kazehaya Connection: He played in a baseball league run by Kazehaya's father, meaning he has known Shota, Ryu, and Chizuru since they were toddlers. Superstitions: He is hilariously superstitious and genuinely believes Sawako has supernatural powers that can exorcise spirits or curse people. Home: Completely solo and chaotic; he frequently tricks his students into doing his paperwork so he can play video games or rest.