2.43: Seiin High School Boys Volleyball Team

is a Japanese sports light novel series written by Yukako Kabei and illustrated by Aiji Yamakawa. Shueisha have published the novels since March 2015 under their Shueisha Bunko imprint. A manga adaptation with art by Yamakawa has been serialized in Shueisha's josei manga magazine Cocohana since July 2018. An anime television series adaptation by David Production premiered on January 8, 2021 on the Fuji TV's NoitaminA block.

Plot
Junior high school student Kimichika Haijima moves back to his hometown, Fukui, after causing trouble in the Tokyo Junior High School volleyball club. There, he is reunited with his childhood friend, Yuni Kuroba, who possesses outstanding physical abilities, but is vulnerable under pressure. With his overwhelming passion and talent for volleyball, Hajime decides to form an ace combination with Kuroba.

The two later enroll at Seiin High School, where they join the volleyball club. Awaiting them are the 163 cm hot-blooded captain Shinichirou Oda, the talented and sharp-tongued vice-captain Misao Aoki and his third-year pair, and second-year students, including Akito Kanno, who is always wearing long sleeves due to his allergy to sunlight.

The newborn team breaks its former shell of weakness and becomes Fukui's rising star. This is a certain team's journey to victory, with a series of fascinating rivals standing in their way.