"Dotanba no Manners" is a comedic anime series that revolves around the lives of a group of high school students navigating the absurdities of their daily routines and social interactions. The story is set in a fictional high school where the characters are often caught in exaggerated, surreal situations that parody typical school life tropes. The central focus is on the titular "Dotanba no Manners," a set of unspoken, bizarre rules that govern the students' behavior, often leading to chaotic and humorous outcomes.

The protagonist, a transfer student named Haruto, becomes the audience's lens into this strange world. Haruto is initially bewildered by the nonsensical customs and rituals of the school, such as the mandatory "morning dance" performed by students to appease the school's mascot, a giant sentient statue. As Haruto tries to adapt, he forms a friendship with a group of eccentric classmates, including the overly serious class representative, Yui, who takes the school's rules to an extreme, and the laid-back yet mischievous Kenta, who often flouts the rules for his own amusement.

The plot unfolds through episodic adventures, each highlighting a different aspect of the school's peculiar culture. One episode might involve a competition to determine the "most mannerly" student, judged by the school's enigmatic principal, while another might explore the consequences of breaking the "Dotanba no Manners," such as being forced to wear a chicken costume for a week. The series balances its humor with moments of genuine camaraderie among the characters, as they band together to survive the school's absurd challenges.

Throughout the series, recurring themes include the pressure to conform to societal norms, the absurdity of rigid traditions, and the importance of friendship in overcoming adversity. The characters' growth is subtle but evident, as they learn to navigate the school's eccentricities while staying true to themselves. The narrative maintains a lighthearted tone, using its exaggerated scenarios to deliver both laughs and occasional heartfelt moments, making it a unique addition to the school-life comedy genre.