Although Ave Mujica enjoys a growth in popularity after several concerts, leader Sakiko Togawa sternly continues to demand the members follow her vision for the band, causing clashes within the band that spiral into each member's ulterior motives, insecurities, secrets, and traumas being brought to light.

was a youth drama where its members express their raw emotions and perform in simple live houses, Ave Mujica in comparison is a psychological suspense story where its members conceal their emotions behind masks as they conduct operatic performances in theaters.

[11][12] Kakimoto added that in order to distinguish Ave Mujica from the franchise's existing gothic band Roselia, the production team incorporated elements inspired by circuses, freak shows, and theater.

!, an anime television series centered around Ave Mujica that serves as its direct sequel was announced on September 14, 2023.

Crunchyroll licensed the series in North America, Latin American (except Brazil), Oceania, South Africa and selected European territories under the title Ave Mujica - The Die is Cast -.

[19] It began serialization in Comic Growl on January 10, 2025, in both Japanese and English;[20][21] its chapters are collected in one tankōbon volume as of February 2025.

Prior to the series release, Christopher Farris of Anime News Network expressed excitement for its premiere, as he imagined it would be "potentially...more unhinged" than BanG Dream!

He commented that the series aimed to reframe Sakiko in a "more sympathetic light" than previously, making her a more complex character, and praised the writing by Yuniko Ayana, and called it "earned continuation" of It's MyGO!!!!!.

He praised the series writing by Ayana which "defined by smaller, subtler details that dot the stories" which later contribute to strong plotlines and character developments, while rewarding repeat viewing, noted that Sakiko's backstory is "more ambiguously complex" than it appeared at first, asserted that the series narrative focuses on satisifcation, self-care, and the "line between selflessness and self-destruction," and praised the animation by SANZIGEN.