10代限定のバンド登竜門的ロックフェス“未確認ライオット”のライブ審査まで進んだ結束バンド。SIDEROSはじめ並みいる強豪たちを前に、後藤ひとりはその力を出し切ることができるのか……！？可愛く、面白く、そして“熱く”なれるニュー・スタンダード、第4巻！

Kessoku Band has successfully cleared the first round of auditions for the Unidentified Riot music festival, but this is no time to rest on their laurels. The next step is a death knell for introverts everywhere-a popularity contest! Every vote in the online poll matters when they’re trying to stand on the same stage as powerhouses like SIDEROS, so Bocchi will need to call in a favor from all the...friends she has? Um, is this the end of the line for Hitori Gotoh?!