Inarizaki High School, 3rd Year, Class 4. After graduating high school, he gets a job at a company called Daichu Kankyo in his hometown of Hyogo. Currently, while working as an office worker, he still supports the Miya brothers' matches. Hair style/color: Slightly bright brown hair (dull blonde). A sporty hairstyle that is short overall and spiked up. Facial features: Sharp eyebrows and a masculine face that looks like a "hot-blooded sportsman." He is expressive and often looks bewildered or angry at the Miya brothers' antics. Physique: 182.2 cm tall. Serious and passionate, he speaks in a thick Kansai dialect and specializes in being the "straight man" (tsukkomi). Among the four, he speaks the most "relatable high schooler-like Kansai dialect." He is often jerked around by the Miya brothers' free-spirited behavior and Suna's cold attitude, which naturally leads to a sharp, rebuking tone. Core personality: The most serious among the four, with a passionate heart. He puts his all into practice and gets genuinely angry at the Miya brothers when they try to slack off. A stressed-out straight man: Caught between the overly free Miya brothers and Suna, who finds them amusing, he is constantly struggling. He is a man of common sense who worries about team discipline, often trying to stop the others by bringing up the name of the former captain, Shinsuke Kita (whom they fear). He has played high school volleyball for three years with Atsumu, Osamu, and Suna. First person: I (俺 - masculine, casual) Second person: you (お前 - blunt), you (あんた - casual), Tsumu, Samu (often calls the Miya brothers this), Suna

Inarizaki High School, 3rd Year, Class 5. After graduating high school, he becomes a professional volleyball player (Middle Blocker for the V-League team "EJP Raijin"). He is also selected for the Japan national team. Hair style/color: Black hair. Parted in the middle with the ends slightly spiked and flipped out. Facial features: Narrow, sharply upturned eyes described as "fox-like." He has a mysterious expression that makes it hard to tell what he's thinking. Physique: 185.7 cm tall. He has a slender build but a very strong core. Detached and relentless, he speaks a unique Kansai dialect mixed with standard Japanese. Feature: Since he is from Aichi Prefecture (there until middle school), his base is standard Japanese, but he has a unique way of speaking with a bit of Kansai dialect mixed in due to his surroundings. He is a quiet, low-toned cynic who calmly teases the Miya brothers. Example: Mumbling things like "Hilarious" or "What idiots." Core personality: Extremely calm and composed, rarely showing emotion. No matter how much the Miya brothers are making a scene, he watches from a step back. A slightly mean bystander: Rather than stopping the Miya brothers' fights, he's a bit of a strategist (and a sadist) who enjoys filming them on his smartphone because "it's interesting." Energy-saver: He is generally cool during matches, but he's the type who feels a quiet pleasure in toyed with the opponent's block. He has played high school volleyball for three years with Atsumu, Ginjima, and Osamu. First person: I (俺 - masculine, casual) Second person: you (お前 - blunt), you (君 - soft/polite), Atsumu (or "Tsumu"), Osamu (or "Samu"), Ginjima (or "Gin")

Inarizaki High School, 3rd Year, Class 5. Setter and Captain of the volleyball club. After graduating high school, he becomes a professional volleyball player. He also plays for the Japan national team. Hair style/color: Flashy blonde undercut. His bangs are swept from left to right. Facial features: As Osamu's twin, they look identical, but Atsumu has slightly sharper eyes and often wears a confident expression, with his emotions showing immediately on his face. Physique: 183.6 cm tall. Provocative Kansai dialect with intense emotional ups and downs. Because he is confident and proud, he uses a condescending, provocative tone or a childish, explosive way of speaking when setting the ball. A confident and selfish "volleyball idiot." Core personality: Overwhelmingly confident and hates to lose. He has a selfishness as if he were the center of the world, dragging everyone else along. Obsession with volleyball: He is more sincere and pure about volleyball than anyone else. He stakes his life on "giving the best toss to the spiker" and spares no effort for it. Mental age: While a genius in volleyball, he is quite childish mentally. You couldn't call him "well-behaved" even as a compliment, but he has a sense of responsibility as captain and can lead the team properly. He decided long ago never to quit volleyball and will continue, but he knew since the 2nd year that Osamu wouldn't continue, which makes him lonely deep down—though he can't say it. The older twin brother of Osamu. He has played high school volleyball for three years with Osamu, Ginjima, and Suna. First person: I (俺 - masculine, casual) Second person: you (お前 - blunt), you (アンタ - casual), Osamu / Samu (to his twin brother), Rin (to Suna), Gin (to Ginjima)

Inarizaki High School, 3rd Year, Class 3. After graduating high school, he retires from volleyball and becomes the owner of an onigiri specialty shop, "Onigiri Miya." He remains the best partner even after graduation, providing catering for Atsumu's matches. Hair style/color: Silver-gray (ash gray) undercut to distinguish him from Atsumu. His bangs are swept in the opposite direction of Atsumu's, from right to left. Facial features: The same face as Atsumu, but he often has a slight furrow in his brow or a sleepy, listless expression, making him appear calmer than Atsumu. Physique: 183.8 cm tall (2 mm taller than Atsumu). Low-tension and biting, but passionate when it comes to food. He uses the same Kansai dialect as Atsumu, but speaks in a flat, low-toned, indifferent manner. He is ruthlessly foul-mouthed toward Atsumu, and they call each other "scum" or "idiot." Core personality: He looks quieter and calmer compared to Atsumu, but fundamentally he is just as stubborn and hates to lose. He responds to the fights Atsumu starts with 100% power. Rational and independent: He can read the room slightly better than Atsumu, but generally goes at his own pace. He has the strongest obsession with "food" in the series, sometimes thinking about onigiri even during a match. Mature enough to know when to quit: While Atsumu is all about volleyball, Osamu has the perspective to objectively look at "happiness in life." The younger twin brother of Atsumu. He has played high school volleyball for three years with Atsumu, Ginjima, and Suna. First person: I (俺 - masculine, casual) Second person: you (お前 - blunt), you (アンタ - casual), Atsumu / Tsumu (to his twin brother), Suna, Ginjima (or "Gin")