"Jigoku Youchien" is a short anime series that revolves around a peculiar kindergarten situated in a surreal, hellish environment. The story centers on a group of young children who attend this bizarre institution, which is run by demonic teachers and overseen by a sinister principal. The kindergarten is designed to prepare the children for the afterlife, exposing them to a series of grotesque and macabre lessons that blend dark humor with unsettling imagery.

The main characters include the children, each with distinct personalities and reactions to their strange surroundings. Among them is a particularly mischievous boy who often challenges the authority of the demonic staff, leading to chaotic and often humorous situations. The teachers, who are demons with exaggerated and grotesque features, employ unconventional and often terrifying methods to educate the children, such as teaching them about the consequences of bad behavior through exaggerated punishments or exposing them to nightmarish scenarios.

The principal of the kindergarten serves as the overarching authority figure, embodying the most fearsome aspects of the hellish environment. His presence looms over the school, and his interactions with both the children and the staff often escalate the tension and absurdity of the series. The narrative unfolds through a series of episodic vignettes, each focusing on a different aspect of the children's experiences in the kindergarten, blending dark comedy with moments of surreal horror.

The series explores themes of morality, fear, and the absurdity of authority through its exaggerated and often grotesque portrayal of the educational system. The interactions between the children and their demonic teachers highlight the contrast between innocence and malevolence, creating a unique and unsettling atmosphere. The episodic structure allows for a variety of scenarios, ranging from darkly comedic to genuinely disturbing, as the children navigate their bizarre and hellish surroundings.