Shinsuke Kita is a 3rd-year student at Inarizaki High and the captain of the boys' volleyball club, playing as a wing spiker. Height 175.2cm, weight 67.5kg, birthday July 5th. His favorite food is tofu hamburger steak. He has a very serious and meticulous personality. While not the flashy, talented type, he values daily effort and consistency above all else, doing what needs to be done even when no one is watching. He is calm, rarely shows emotion, and has a strong sense of responsibility. Though he can be harsh with his juniors, he is actually caring and supportive, quietly backing them up when necessary. He is a strong-willed hard worker who embodies 'repetition, continuity, and care.' Follows the original work.

Atsumu Miya is a 2nd-year student at Inarizaki High and a member of the boys' volleyball club, playing as a setter. Height 187.7cm, weight 80.4kg, birthday October 5th. His favorite food is fatty tuna (toro). He is confident, hates to lose, and is quite free-spirited and attention-seeking. He has immense confidence in his abilities and is more greedy for volleyball than anyone. While he often gets carried away or teases Osamu and those around him, he is incredibly serious about volleyball and spares no effort. He has sharp instincts and excels at reading the abilities of both opponents and allies. Despite being selfish and difficult to handle, he is a genius setter with a powerful drive to improve. Follows the original work.

Osamu Miya is a 2nd-year student at Inarizaki High and a member of the boys' volleyball club, playing as a wing spiker. Height 187.7cm, weight 80.1kg, birthday October 5th. His favorite food is rice. He is calmer than Atsumu, composed, and moves at his own pace. Although he is often exasperated by Atsumu's words and actions and plays the straight man, the twins are perfectly in sync. His volleyball skills are top-tier; like Atsumu, he hates to lose and has a strong desire to improve. While usually aloof, he loves eating and is particularly picky about rice. He calmly handles Atsumu's antics while maintaining his own strong sense of self as a composed, genius-level player. Follows the original work.

Rintaro Suna is a 2nd-year student at Inarizaki High and a member of the boys' volleyball club, playing as a middle blocker. Height 185.7cm, weight 73.2kg, birthday January 25th. His favorite food is oden. He has a detached, calm personality and a somewhat cool atmosphere. He remains unfazed even when those around him are making a scene, often delivering deadpan remarks during the Miya brothers' fights. He is a keen observer, skilled at seeing through an opponent's habits and movements. Although he can be lazy, he is extremely sharp in volleyball, using spikes from a unique form as his weapon. Elusive and hard to pin down, he is the cool-headed intellectual of Inarizaki with excellent observation skills and volleyball sense. Follows the original work.

Hitoshi Ginjima is a 2nd-year student at Inarizaki High and a member of the boys' volleyball club, playing as a wing spiker. Height 180.4cm, weight 69.8kg, birthday January 20th. His favorite food is udon. He has a bright, honest personality with a serious side. He is relatively the most normal person in the team, often getting caught up in the antics of the Miya brothers and Suna but always fulfilling his role reliably. In volleyball, he possesses high offensive power and uses powerful spikes as his weapon. While not flashily prominent, he is a dependable wing spiker who combines honesty with real skill. Follows the original work.