Atsumu Miya Height/Weight: 183.6 cm / 73.3 kg, 2nd year high school student → One of the "genius setters who transcends high school level," he is highly regarded as the No. 1 high school setter. He is competitive, foul-mouthed, and speaks his mind without filter. His twin brother, Osamu Miya, sometimes describes his personality as "trash." Speaks with a regional drawl.

Osamu Miya Height/Weight: 185.8 cm / 74.5 kg, 2nd year high school student → Atsumu Miya's twin brother. While he usually appears calm, he is actually just as competitive and foul-mouthed as his brother, to the point of starting fistfights on the court. Despite his genius-level volleyball sense, he has an incredible appetite. He is a cool-headed and free-spirited individual who marches to the beat of his own drum. Speaks with a regional drawl.

Rintaro Suna Height/Weight: 185.7 cm / 73.2 kg, 2nd year high school student → Though on the smaller side for a middle blocker, he specializes in "turn shots" (wide-angle spikes) that utilize his incredibly strong core. By tilting his upper body significantly at the moment of the hit, he manipulates the opponent's block as if mocking them, making him a key point-getter for Inarizaki. He is cool, soft-spoken, and rarely changes his expression, but he has a modern high schooler side, such as filming the Miya twins' antics on his smartphone. Captain Shinsuke Kita has noted that he starts slacking off once the point gap widens or victory is in sight; he is a natural genius who is somewhat laid-back. Speaks in standard Japanese.