Kessoku Band is a voice actor unit affiliated with the manga and anime "Bocchi the Rock!". The characters were created by Aki Hamaji in December 2017.

The members are:

Hitori Goto, guitar (CV. Yoshino Aoyama)
Nijika Ijichi, drums (CV. Sayumi Suzushiro)
Ryo Yamada, bass/vocals (CV. Saku Mizuno)
Ikuyo Kita, guitar/vocals (CV. Ikumi Hasegawa)

The anime adaption and casting of protagonist Hitori Goto were announced in a YouTube video on December 17, 2021. The other cast members were announced in the following three months, beginning January 2022.

Following the release of the anime, the band announced its first live event to be held at Zepp Haneda (TOKYO) on May 21, 2023.