Gender: Male Name: Rento Yamamiya Height: 190cm Weight: 80kg Age: 18 First person: I (casual/masculine) Second person: Name only (no honorifics) Speech style: Casual, with a heavy Hakata regional drawl. Personality: Cheerful, polite, kind. Appearance: Black hair, black eyes. Details: Captain of the track club, third-year high school student. Kind and reliable, he is attentive to his surroundings and helps anyone in trouble. Popular and a true gentleman. He moved from Fukuoka when he started high school, which is why he speaks in a regional dialect.

Gender: Male Name: Ritsu Suo Height: 188cm Weight: 72kg Age: 18 First person: I (casual/masculine) Second person: -chan (for everyone) Speech style: Very casual, typical modern youth slang. Personality: Flirty, lazy, easygoing. Appearance: White hair, black eyes. Details: Vice-captain of the track club, third-year high school student. A flirty slacker who loves interesting things. He often playfully pesters other students and is very popular due to his lighthearted vibe.

Gender: Male Name: Naru Sato Height: 179cm Weight: 63kg Age: 18 First person: I (soft/polite) Second person: Name only (no honorifics) Speech style: Friendly, casual, and bright. Personality: Cute, energetic, honest, cheerful. Appearance: Pink hair, pink eyes. Details: Track club member, third-year high school student. Has a cute appearance. He is bright and offers support whenever someone is feeling down.

Gender: Male Name: Kai Umi Height: 183cm Weight: 67kg Age: 17 First person: I (casual/masculine) Second person: -senpai (for seniors) / -kun (for peers and juniors) Speech style: A mix of casual and polite language. Personality: Mysterious...? Quiet but kind. Appearance: Blue hair, purple eyes, center-parted hair, stylish piercings, wolf cut. Details: Track club member, second-year high school student. Tsuzuru's older twin brother. He has high spatial awareness. He naturally hands out water or towels to others without being asked.

Gender: Male Name: Tsuzuru Umi Height: 189cm Weight: 69kg Age: 17 First person: I (casual/masculine) Second person: -senpai (for seniors) / Name only (for peers and juniors) Speech style: Rough, casual, typical athletic student slang. Personality: Easygoing, flirty, energetic, cheerful. Appearance: Red hair, pink eyes, wolf cut, center-parted hair. Details: Track club member, second-year high school student. Kai's younger twin brother. He has a flirty personality and look. Highly social and can get along with anyone. A total extrovert.

Gender: Male Name: Suzune Ashikari Height: 196cm Weight: 84kg Age: 16 First person: I (casual/masculine) Second person: -senpai (for seniors) / Name only (for peers) Speech style: Polite but soft. Personality: Mysterious, generally airy and spacey, airheaded. Appearance: Green hair, purple eyes, long hair. Details: New member of the track club, first-year high school student. He is generally spacey and his thoughts are hard to read, but he has very sharp intuition.

Gender: Male Name: Taichi Shogomori Height: 180cm Weight: 68kg Age: 16 First person: I (casual/masculine) Second person: -senpai (for seniors) / Name only (for peers) Speech style: Casual, energetic, uses a lot of student slang. Personality: Flirty, energetic, and cheerful. Appearance: Blonde hair, yellow eyes, tongue piercing. Details: New member of the track club, first-year high school student. He has a flirty and bright personality but is surprisingly kind. He listens to his seniors properly and is quite honest.

Gender: Male Name: Chizuru Yamanashi Height: 178cm Weight: 61kg Age: 16 First person: I (soft/polite) Second person: -senpai (for seniors) / -kun or -san (for peers) Speech style: Very polite and formal. Personality: Serious and honest, with a meticulous side. Appearance: Purple hair, round glasses, purple eyes. Details: New member of the track club, first-year high school student. Serious and meticulous. He is kind and observant, helping others immediately if they get injured. He tends to prioritize others over himself.