Kazuhito Narita

Kazuhito Narita (Narita Kazuhito) is a 2nd year at Karasuno High. He is one of the team's middle blockers. Like Tanaka, he has a shaved head except his hair appears much darker and doesn't have a widow's peak. During their first year of high school, Kazuhito, together with Ennoshita and Hisashi, leaves the volleyball team as they are unable to keep up with Ukai Sr.'s harsh training methods.

They come back after they hear about Ukai Sr.'s hospitalization and regret their decision, starting to call themselves "The Ungrateful Second Years." He, along with the rest of the team, takes part in a series of training camp with Nekoma High, Ubugawa High, Shinzen High, and Fukurōdani Academy.

He isn't a regular on the team. He's seen watching or cheering on the bench during games in the background. However, he finally play in an official match during the Johzenji High match as replacement for Hinata, who was benched following Kageyama's injury. During the match with Johzenji High, it's shown that Narita can spike at a normal level and is compatible with Sugawara. He appears to be good friends with Ennoshita and Kinoshita and is often seen with them during practice or games. He's never seen without either Hisashi or Ennoshita.

Hisashi Kinoshita

Hisashi Kinoshita (Kinoshita Hisashi) is a 2nd year in Class 2 at Karasuno High. He is one of the volleyball team's wing spikers. Hisashi has short spiky hair that's light brown in color, and cat-like eyes. He is average in height, but compared with the other second-year players he is the shortest aside from Nishinoya.

He's very supportive of his team. Even though he isn't a regular, he's always seen cheering Karasuno on. It seems he's not afraid to make sly remarks about his teammates such as telling Tanaka, "Don't take off your shirt, baldy!" Prior to the events in Haikyuu, Hisashi leaves the volleyball team, together with Ennoshita and Narita as they are unable to keep up with Ukai Sr.'s harsh training methods.

They come back after they hear about Ukai Sr.'s hospitalization and regret their decision, starting to call themselves "The Ungrateful Second Years." During the Golden Week, it is revealed that he left the volleyball club for a short period of time due to Ikkei Ukai's harsh training methods. He, along with the rest of the team, takes part in a series of training camp with Nekoma High, Ubugawa High, Shinzen High, and Fukurōdani Academy. It is noted that he's part of Team B. He appears to be good friends with Ennoshita and Narita and is often seen with them during practice or games.

Chikara Ennoshita

Chikara Ennoshita (Ennoshita Chikara) is a 2nd year at Karasuno High. He is one of the team's wing spikers. Ennoshita is an average-looking guy with a sleepy look on his face. He doesn't attract much attention and often goes unmentioned even when he's on court.

He seems quiet and reserved but can behave boldly towards the other 2nd years. He's smart and hasn't received a failing mark before. Similarly to Sugawara, he is always smiling. He's supposedly the only one within the 2nd years to be able to control Tanaka and Nishinoya. He's also able to understand different people, as stated a few times by Tanaka and when he knew what to do to give Yamaguchi some courage before his jump float serve.

Prior to the events in Haikyuu, Ennoshita leaves the volleyball team, together with Kinoshita and Narita as they are unable to keep up with Ikkei Ukai's harsh training methods. They come back after they hear about Ukai Sr.'s hospitalization and regret their decision, starting to call themselves "The Ungrateful Second Years". His regular position on the team is taken by Tanaka and Asahi. He can be seen cheering from the bench during games. Ennoshita's fundamentals all seem pretty much intermediate, as commented by Iwaizumi, his playing style isn't that bad, but wasn't that outstanding overall. No ability in particular stands out, but is level headed and smart during in games, despite his lack of game sense in volleyball being much lower than Sugawara and Daichi. This was showcased as he was able to deduce Takeru's plan of using his blockouts every time he goes up against blockers, each time he attempts to spike the ball. Even though he is a bench player, his smart thinking in games is what got him voted to be the next captain for the whole team next year, by the time the current third years graduate and leave for university.

Tadashi Yamaguchi

Tadashi Yamaguchi (Yamaguchi Tadashi) is a member of the Karasuno High Volleyball Club. He plays the role of pinch server in the team. Yamaguchi is a young-looking boy with an average build. He has short black hair, often portrayed as brown or even green with a flyaway piece of hair sticking up at the top. Back in middle school, he was teased for his freckles and overall scrawniness.

He seems to have grown into it now and isn't bothered about it as much. After joining the Karasuno volleyball team during games, Yamaguchi wears Karasuno's black, orange, and white uniform with the number 12 on the back. He also wears knee pads, and white volleyball shoes with black details. Outside of matches and practice, Yamaguchi wears a black gakuran, the Karasuno uniform.

Yamaguchi is a pretty shy person who relies on others. Though he is generally a nice person, he tends to snicker along or join in with Tsukishima whenever he's mocking others. He is hardworking, as shown when he sought for extra training on his own, and how he continued practicing outside of the team after seeing how weak he was compared to his other teammates. After a fatal loss in the match against Aobajōsai High, he gained a lot of confidence thanks to his teammates and Makoto Shimada since he was helping him practicing the jump float serve. During the summer training camp, he even stood up against Kei Tsukishima, who was surprised and called him "cool" for the first time. Tsukishima started working harder, and their relationship returned to normal after that event.