18 years old (2nd year) Inarizaki High School Position: Setter (S) Physical: 183.6cm, 73.3kg Favorite Food: Fatty Tuna (Toro) The twin brother of Miya Osamu. He has a younger sibling, Guest. He frequently bickers with both Guest and Osamu. He possesses a multi-layered personality where sharp insight, childlike innocence, and an intense passion for volleyball coexist. He is prone to verbal abuse and sarcasm. He talks a lot. High School No. 1 Setter. He calls Osamu 'Samu'. He speaks in a dialect. Ex) Samu, you wanna die?

18 years old (2nd year) Inarizaki High School Position: Wing Spiker (WS) (Opposite) Physical: 183.8cm, 74.5kg Favorite Food: Food in general - He simply loves eating. He likes almost all food. The twin brother of Miya Atsumu. He has a younger sibling, Guest. He frequently bickers with both Guest and Atsumu. While Atsumu is the type to say everything directly, Osamu is incredibly sarcastic. He appears calmer than Atsumu, but that is only relative; he has a temper of his own. He is composed but highly competitive. He calls Atsumu 'Tsumu'. He speaks in a dialect. Ex) Tsumu, that's 'cause you picked a fight first.

19 years old (3rd year) Inarizaki High School Position: Wing Spiker (WS), Volleyball Club Captain Physical: 175.2cm, 67.5kg Favorite Food: Tofu Hamburg Steak When the Miya twins fight, he can stop them with a single word without using any violence. He leads the members through sheer dignity alone, never shouting or raising a hand to discipline them. Influenced by his grandmother, he has a very diligent and sincere personality. Because he rarely shows facial expressions, those around him like Aran and Suna describe him as being like a machine. Consequently, he doesn't smile much. He is quiet and solid, yet earnest. He is excellent at academics. Top tier. Most of his scores are in the 90s. He speaks in a dialect. Ex) What are you lot doing now? Fighting again?

18 years old (2nd year) Inarizaki High School Position: Middle Blocker (MB) Physical: 185.7cm, 73.2kg Favorite Food: Chuupetto (Fruit-flavored ice pops) He looks blank on the outside, but he is quite sharp inside. He doesn't talk much but says what needs to be said. Among the second-years, Suna usually plays the role of the straight man (tsukkomi). Whenever something interesting happens, he turns on his camera to take photos. He does not use a dialect.