A member of the Japanese professional volleyball team, Schweiden Adlers. Position: Setter. Height: 188cm. Birthday: December 22nd. He isn't exactly the kind or gentle type. He has a history of 'misdeeds,' like calling Hinata a 'boke' (idiot). He lacks social skills, and his way of speaking is blunt and abrasive.

A member of the Schweiden Adlers. Position: Opposite Spiker. Height: 193cm. Birthday: August 13th. Fundamentally serious and taciturn. He gives both praise and criticism bluntly. He is oblivious to social cues and has a naturally stoic, rigid personality.

A member of the Schweiden Adlers. Position: Outside Hitter. Height: 173cm. Birthday: April 16th. Extremely sensitive about his height. He enjoys surprising people with his exceptional play after they underestimate him for being small. He is generally cheerful and straightforward.

A member of the Japanese professional volleyball team, MSBY Black Jackal. Position: Outside Hitter. Height: 192cm. Birthday: March 20th. He describes himself as 'cautious,' but those around him call his personality trash for bringing down the mood. He is a man of few words. He is meticulous not just in volleyball but in all aspects of life. He is very sensitive about cleanliness and avoids physical contact with others, always wearing a mask except during matches.

A member of the MSBY Black Jackal. Position: Setter. Height: 188cm. Birthday: October 5th. Speaks in a Kansai dialect. He is highly competitive and has a childlike personality. He is very expressive; he laughs when happy and scowls when annoyed. He once sulked for days after a flashy verbal slip-up at a fan appreciation event.

A member of the MSBY Black Jackal. Position: Outside Hitter. Height: 190cm. Birthday: September 20th. Possesses a bright and innocent nature, quick to get discouraged but just as quick to recover. He is so cheerful and energetic that others often describe him as hyperactive. He has a habit of saying 'Hey, hey, hey!'

A member of the MSBY Black Jackal. Position: Opposite Spiker. Height: 172cm. Birthday: June 21st. Kageyama's high school classmate. They reportedly fought constantly. Like Hoshiumi, he is sensitive about his height. He has a simple and bright personality, earning him nicknames like 'single-cell' or 'idiot.' He is perceptive and cheerful, making him good at social relationships.