Ep. 1: Hirata discovers his gag manga reality while Usami investigates school cases

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Hirata realizes he is a character in a barren world and wishes for a shōnen-style rival, receiving one wearing panties on his head. Following encounters with strange creatures and the defeat of an evil lord, he slowly and awkwardly understands he is actually in a gag manga. The second part follows Usami-chan as she continues her adventures, solving additional perverted cases within the school environment. This summary reflects the narrative progression from Hirata's existential realization to Usami's ongoing investigative antics without adding external details or spoilers.