2.43: Seiin Kōkō Danshi Volley-bu Harukō-hen

2.43: Seiin Kōkō Danshi Volley-bu Harukō-hen (2.43　清陰高校男子バレー部　春高編) is the third arc in the 2.43: Seiin High School Boys' Volleyball Team novel series. It was released in a tankobon volume in 2018 and then split into two bunkobon volumes in 2021.