Critical reception
In Anime News Network's Fall 2022 Preview Guide, the series received positive responses upon its debut. Caitlin Moore praised the realistic depiction of Hitori's guitar playing as well as the "slightly acerbic" comedy which helped avoid the show becoming "too gentle" and contributed to Hitori's relatability. James Beckett similarly complimented the anime's attention to detail regarding the musical activity, in contrast to other similar anime, which he felt were generally not attentive to such logistical elements. Rebecca Silverman's agreed that Hitori was relatable and found the first episode engaging, but she believed that the anime "seems to conflate introversion and social anxiety" and did not like the visuals. Richard Eisenbeis stated that the show's cringe comedy was not to his personal taste, though he acknowledged its solid underlying lessons. Nicholas Dupree opined that Hitori's character felt "authentic" to "the kind of introverted kid who would wear band merch and carry their guitar to school in a bid to seem interesting." Following the season conclusion, Dupree called the series a funny, creative, and heartwarming comedy, particularly highlighting the concert sequence and the heart-to-heart conversation between Hitori and Nijika Ijichi in Episode 8. Dupree also selected Kikuri Hiroi as his character of the year, describing her wild personality alongside her "surprising insight and empathy" as the "platonic ideal of a rock star."
Several critics compared the anime with K-On!, another work serialized in Manga Time Kirara, describing it as the "Reiwa-era version of K-On!". Liang You of The News Lens noted that K-On! focuses primarily on everyday life, whereas Bocchi the Rock! focuses primarily on the band elements. Rafael Motamayor of IGN strongly praised the anime for its story, themes, and visual creativity, comparing it favorably to K-On! and Keep Your Hands Off Eizouken!. He described the show as a spiritual successor to K-On!, though noting that the latter focused more on how a group of girls become friends.
The portrayal of social anxiety also resonated strongly with general viewers. An editor for Eslite Bookstore noted that behind its high school music setting, the series exposes the widespread psychological state of modern people feeling lonely even in a crowd. Vista Weekly similarly noted that the series touched upon the real pain points of contemporary youth, calling it a work that captures modern societal anxieties and has the potential to become a classic for a generation. Critics also evaluated the show's depiction of social anxiety against other anime addressing similar themes such as Komi Can't Communicate, which some felt relied on anxiety purely as a comedic device or a romanticized trope. Motamayor noted that Bocchi the Rock! did not make light of the protagonist's struggles for comedy. Moore shared a similar view, though she felt that the portrayal of Hitori's anxiety occasionally went too far, leaving viewers who related to her feeling mocked. Adam Wescott of Crunchyroll News favorably compared the series to Watamote for its exploration of anxiety and artistic self-expression, and praised the visual inventiveness of the "anxiety attack" sequences, including the integration of CGI and stop motion animation.
The realistic depiction of band culture resonated with musicians and industry figures. Writing for Real Sound, Yoruno stated that the anime captured emotional moments that only actual band members could fully appreciate. Motamayor highlighted how the series addressed realistic struggles such as creative writer's block, financial strain, and live performance mistakes, demonstrating that an artist's life is not always smooth sailing. Yoshihiro Kawamura of The Asahi Shimbun remarked that despite being a moe comedy series, a genuine love for rock music was evident throughout the show. Masafumi Gotoh, lead singer of Asian Kung-Fu Generation, wrote in a personal journal entry that one of the anime's major achievements was "liberating the so-called rock music from certain negative stereotype."
The series' concert sequences and varied visual styles received widespread acclaim from critics. Dupree considered the show to feature "some of the best concert scenes ever put to animation." Motamayor highlighted how the series externalized Hitori's inner world through various techniques, including stop motion, phenakistoscope, and paper craft, alongside comical facial distortions where she transforms into slugs or monsters, making it "one of the funniest and most inventive comedies of the season." Kaeru Inaka of Real Sound noted that while the anime expanded the space between the original four-panel comic strip panels with exaggerated narrative and visual techniques, it simultaneously demonstrated CloverWorks' strength in realistic artwork and nuanced character movement. Naledi Ramphele of Game Rant praised the show for pushing the envelope in animation, noting its dynamic camera work—such as close-ups, wide angles, and low angles—to convey Hitori's anxiety and loneliness, while praising the rich background detail, though noting that background character animations were relatively sparse. Moore stated that the series' visual creativity ranked alongside the third season of Kaguya-sama: Love Is War as one of the best of the year.
