"Gag Manga Biyori 3" is the third installment in the "Gag Manga Biyori" series, a comedic anime that revolves around the absurd and surreal daily lives of its eccentric characters. The narrative is episodic, with each episode consisting of short, self-contained skits that blend slapstick humor, parody, and nonsensical situations. The series lacks a continuous overarching plot, instead focusing on delivering rapid-fire gags and exaggerated scenarios.

The main setting is a rural Japanese village, where the characters engage in bizarre and often illogical activities. The central figures include a group of students and their equally quirky teachers at a local school. Among them is the perpetually cheerful and clueless teacher, Akane Sakura, who often finds herself at the center of the chaos. Her interactions with the students, such as the mischievous and unpredictable trio of girls—Moe, Natsumi, and Ayumu—drive much of the humor. The students frequently challenge societal norms and logic, creating absurd situations that defy reality.

Other recurring characters include the stoic yet easily flustered principal, who often becomes the target of the students' pranks, and a variety of oddball villagers who contribute to the show's unpredictable tone. The humor often relies on breaking the fourth wall, meta-commentary, and parodying common anime and manga tropes. The series thrives on its fast-paced, chaotic energy, with each episode delivering a mix of visual gags, wordplay, and surreal humor.

The narrative structure is intentionally disjointed, with no significant character development or progression. Instead, the focus remains on creating a steady stream of comedic moments that appeal to fans of absurdist and over-the-top humor. The series maintains a lighthearted and irreverent tone throughout, making it a straightforward comedy that prioritizes laughs over depth.