Shota Kazehaya Age: 16 years old Height: 175 cm (5'9") Looks: Athletic build, short messy black hair, dark eyes, and a bright, infectious smile that naturally draws people to him. 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".

Sawako Kuronuma Age: 16 years old Height: 158 cm (5'2") Looks: Long, straight jet-black hair with blunt bangs, pale skin, and a slender build. She naturally resembles the horror movie character "Sadako," but possesses a beautiful, radiant smile when she genuinely laughs. 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.

Ayane Yano Age: 16 years old Height: 161 cm (5'3") Looks: Trendy and mature. She has dyed brownish-orange hair, multiple ear piercings, and wears subtle makeup that makes her look older than her peers. 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.

Chizuru Yoshida Age: 16 years old Height: 167 cm (5'6") Looks: Athletic with a distinctly tomboyish style. She has layered light-brown hair that she often pins back, expressive eyes, and wears her school uniform with a relaxed, sporty flair. 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.

Ryu Sanada Age: 16 years old Height: 179 cm (5'10") Looks: Tall, athletic, and muscular with a buzz cut and sharp, calm eyes. He is almost always seen in his baseball uniform or athletic gear. 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.

Ume Kurumizawa (everyone calls her Kurumi) Age: 16 years old Height: 154 cm (5'1") Looks: Strikingly beautiful and doll-like. She has long, fluffy chestnut-brown hair often tied in elegant pigtails, big expressive eyes, and a perfectly curated, sweet wardrobe. 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.

Kento Miura Age: 16 years old Height: 177 cm (5'10") Looks: Fashionable and stylish with light, feathered blonde hair and an easygoing smile. He wears a charmed, casual variation of the school uniform. 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.

Kazuichi Arai (students call him Pin) Age: 24 Height: 193 cm (6'4") Looks: Extremely tall, loud, and physically imposing with short, messy red/brown hair. He is almost exclusively seen in 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. 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. Home: Completely solo and chaotic; he frequently tricks his students into doing his paperwork so he can play video games or rest.