A leak confirmed that the spin-off manga was written and illustrated by Retsu, Let us! Haikyuu!?, you have a "new serialization" on the website Shonen Jump Plus from the publisher Shueisha to commemorate the premiere of the second half of the anime Haikyuu !! Up.
Retsu published the manga through the Shonen Jump Plus website of the Shueisha publisher with irregular serialization from September 2014. The publisher published the seventh compiled volume in October 2018, which was believed to be the last.
In addition, this is a manga spin-off of the manga that was written and illustrated by Haruichi Furudate, Haikyuu !!. Furudate published the manga in the magazine Weekly shonen jump from the publisher Shueisha between February 2012 and July 2020. The work has inspired several anime adaptations that were released in April 2014, October 2015 and October 2016. Finally, the fourth season will have its second half premiere on October 2nd.
Synopsis of Haikyuu !! Up
After the triumphant win against Shiratorizawa Academy, the Karasuno High School volleyball team received the long-awaited pass for the national team. While the preparations begin, the ingenious player Tobio Kageyama is invited to the youth training camp "All-Japan", where he can play with other renowned players from all over the country. At the same time, Kei Tsukishima is invited to a special rookie training session in Miyagi Prefecture. Without receiving an invitation, the enthusiastic Shouyou Hinata is pushed aside ...
Source: WSJ manga
© 古 舘 春 一 ／ 集 英 社 ・ 「ハ イ ー ー !!」 製作 BS BS MBS