An editor's solution to zero autographs is threatening a kid. That's the whole joke, and it lands because the show commits to the stupidity without explaining it. Gag Manga Biyori treats catastrophic incompetence as the natural state of the universe, which means every escalation feels inevitable rather than forced. This is what happens when you let comedy breathe without a laugh track or a moral at the end.

Saki is a rising idol, but when she holds a signing event, not one fan shows up. Her bumbling editor has no idea how to fix things, so he tries intimidating a nearby elementary schooler. When that goes nowhere, he sets up a signing contest between Saki and Bururu, a psychotic would-be idol. Elsewhere, a reckless teenager fumbles a ritual to call up Satan, and he and his friends have to find a way to send the devil back below. Each attempt only makes Satan angrier. The comedy special jumps between these two absurd stories.