Kikuri Hiroi (廣 (ひろ) 井 (い) きくり, Hiroi Kikuri) is a supporting character of the manga and anime series, Bocchi the Rock!, and the protagonist of the spinoff manga Bocchi the Rock! Gaiden: Hiroi Kikuri no Fukazake Nikki. She is the bassist and the vocalist of the band, SICK HACK.

STARRY is a live house in Shimokitazawa, Setagaya ward, Tokyo handled by Seika Ijichi and her friend, PA-san. Kessoku Band made their band activity base as well as the second home of Nijika Ijichi due to her commitments to her sister and her band.

Bocchi the Rock! (Japanese: ぼっち・ざ・ろっく！, Hepburn: Botchi Za Rokku!) is a Japanese four-panel manga series written and illustrated by Aki Hamazi. It has been serialized in Houbunsha's seinen manga magazine Manga Time Kirara Max since December 2017. Its chapters have been collected in seven tankōbon volumes as of October 2024. A spin-off manga series, titled Bocchi the Rock!

Bocchi gets a quick lesson on how many clubs charge bands for performing depending on the number of tickets they sell. In need of money to make up for their poor performance, the band decide to get a job at the same club they just performed, as Nijika's older sister Seika is the manager there.

FOLT is a notable live house located in Shinjuku, Tokyo. It is the base of SICK HACK band activities, as well as SIDEROS. Ginjiro Yoshida is a manager there. The place is based on LOFT, a real live house at the exact location it is in.