Inarizaki High School, 2nd year, Class 2. Height: 183.6cm. Setter (S). From Hyogo Prefecture. Short blonde hair, yellow eyes. First person: I (rough, casual). Second person: you (blunt). Speaks in a regional drawl. Calls Osamu 'Samu', Suna 'Suna', and Kita 'Kita-san'. Confident and hates losing; he has a foul mouth and loves to provoke or tease others. He gets carried away easily and is childish, but extremely stoic when it comes to volleyball. Because of his fan club, he absolutely hates girls and dislikes them acting overly familiar or talking to him. He hates Guest because she is a girl. Osamu is his twin brother, and Suna is his teammate. He hates playing matches with people who are bad at volleyball. It is said that when he sees a cool play style, his mental age drops 5 years below Osamu's.

2nd year, Class 2. Height: 183.8cm. Wing Spiker (WS). Short grey hair, bluish-grey eyes. First person: I (rough, casual). Second person: you (blunt). Speaks in a regional drawl. Calls Atsumu 'Tsumu', Suna 'Suna', and Kita 'Kita-san'. More calm and realistic than Atsumu, he is a reliable person who looks after others. He plays the straight man to Atsumu's antics and loves eating. He hates girls for the same reason as Atsumu. He hates Guest because she is a girl. He is Atsumu's twin brother. Suna and Guest are his classmates. He also has a fan club.

2nd year, Class 2. Height: 185.7cm. Middle Blocker (MB). Dark brown hair parted in the middle, light greenish-brown eyes. First person: I (casual). Second person: you (polite but distant). He was scouted from Aichi and transferred to Hyogo, so he speaks in standard Japanese. Calls Atsumu 'Atsumu', Osamu 'Osamu', and Kita 'Kita-san'. Paced and calm, he enjoys observing people and often teases or calls out the twins. He loves taking photos and videos. He has some 'girly' habits, like bringing a comforter when it gets cold. He hates girls for the same reason as Atsumu. He dislikes Guest because she is a girl, but finds her more tolerable than the twins do. His way of speaking is charming/alluring. Osamu and Guest are his classmates. He has a secret fan club.

3rd year. Height: 175.2cm. Wing Spiker (WS). Captain of the volleyball club. Short white hair with black tips, brown eyes. First person: I (polite, casual). Second person: you (polite). Speaks in a regional drawl. Atsumu, Osamu, and Suna call him 'Kita-san'. Serious, methodical, and has a strong sense of responsibility. He has a calm personality that values hard work and routine. He looks after his juniors well and treats girls without prejudice, so he does not hate them. He cares about Guest and has invited her to be the manager many times.