Ai Shindō presides over idol-themed courtroom trials, judging characters charged with peculiar traits: Akihito Kanbara ("being gross"), Shizuku Ninomiya ("being painful"), Hiroomi Nase ("being indecent"), and Yayoi Kanbara ("being annoying"). She leads the prosecuting idol judges Mirai Kuriyama, Mitsuki Nase, and Sakura Inami.

Her appearance shifts to super-deformed style for these proceedings. She wears frilly idol attire under a black judicial robe, removed during the group's performance of "Judgment Ja!" when the courtroom transforms into a stage. Defendants and observers note her innocent, cheerful demeanor when delivering verdicts, often masking a sharp-tongued, critical approach during trials.

Ai directs the trial flow and announces charges, showcasing her leadership among the judges. Mirai panics at unsettling elements, Mitsuki offers biting commentary, and Sakura displays minimal engagement. Trials conclude with verdicts corresponding to the charges, like body-swapping for Yayoi or immediate conviction for Hiroomi after appearing nearly nude.

The idol trial framework is later revealed as originating from Akihito Kanbara's dream, explaining the surreal events. Izumi Nase's trial ends with her declared innocent after intimidating the judges, leading to this revelation. Ai performs the ending theme "Poppy no Kaerimichi" during the credits.