Kafuka Fuura is cheerily walking to school one April morning when she suddenly spots a man trying to hang himself in a fit of despair. Kafuka manages to use her weight to snap the rope, thus saving hi…

After confiding in his latest despairs to Ms. Arai, she asks Nozomu to visit one of his students who hasn't shown up to school — Kiri Komori, a hikikomori. In the end Kiri goes to school but decides t…

This episode is a pastiche of parodies about foreigners and Japanese attitudes concerning them. A foreign student named Kaere Kimura transfers into the class. Kimura is a blonde girl with multiple per…

Chie dispatches Nozomu to investigate rumors that the invariably injured Abiru Kobushi is suffering from domestic violence. He pursues Abiru's father while he shops, causing him a great deal of inconv…

On physical examination day, many of the girls are feeling stress about their weight, measurements and fitness. Nozumu distracts them by deciding to judge the "social worth" of students so that they w…

Kafuka comes down with a cold during the summer and has to go see the doctor, Mikoto Itoshiki, who happens to be Nozomu's brother. Later, Chiri and Kafuka find out from Mikoto that Nozomu has gone bac…

This episode begins with Fujiyoshi bumping into Nozomu while she is on her way to make copies of her doujinshi. Through a misunderstanding, Nozomu ends up going to Comiket to sell his doujin literatur…

This episode begins with Usui Kagerou lamenting about how he never gets noticed by anyone, when he nearly gets run over by a truck who does not notice him. He runs into Nozomu in the shadows, who begi…

Nozomu notices a few members of the class playing a "spot the differences" game. Nozomu tells them that it is important to spot mistakes and he instructs the class in how life is filled with mistakes.…

The episode begins with Nozomu announcing there will be a cultural festival, which he decides to not participate and explains that they are not cultured people, believing that they will grow to be bad…

The girls are watching a particularly awful movie. Outside, they meet with the director, who defends himself by saying that he is just "following the original story." Chasing him, they arrive at roads…

The first part of this episode introduces Ai Kaga, a girl who always takes blame for everything, even though it is not her fault. Nozomu takes the class to a "guilt scramble" to explain that history h…

Nozomu Itoshiki, a direct marketing businessman, is chased by a mysterious religious group called Hamasho. At one point, he is caught and his body is modified like a mole cricket. After his long adven…

The first part of this episode is supposed to follow this storyline from a chapter of the Zetsubō Sensei manga. Perry has come to the school on the anniversary of the school's founding. He is an Ameri…

Harumi Fujiyoshi is listening to a Zetsubō Sensei radio show at home while working on her yaoi dōjinshi. The radio show is actually derived from a chapter of the Zetsubō Sensei manga, which portrays J…

Nozomu Itoshiki and his students enjoy the festival of Tanabata and talk about instances where people pay more attention to the trivial details of many objects rather than the main subjects. In the mi…

Nozomu Itoshiki and his students enjoy the festival of Tanabata and talk about instances where people pay more attention to the trivial details of many objects rather than the main subjects. In the mi…

It's time to hand out grades, but Nozomu Itoshiki hands out completely censored report cards to his students, because he understands that majority of students do not want to be notified of their grade…

Nozomu Itoshiki hands out an application for his pension in a government office, but an employee makes fun of Nozomu's name. Nozomu is sick of hearing the same thing about himself over a million times…

When Nozomu Itoshiki tries take photograph of his nephew and Kafuka Fūra in the public swimming pool, he is accused of being a spy by another woman. Nozomu blames the society, where everyone, includin…

When everyone's mind isn't functioning well after the New Year, Maria decides to tackle them in a manzai fashion. Nozumu Itoshiki explains that there are things other than the New Year that causes peo…

Nozomu Itoshiki watches a live baseball game and is reminded of a fact that many baseball stadiums intentionally reduce the flight range of baseball to make the game more enjoyable to watch. He sudden…

Detective Nozomu Itoshiki is called upon by an investigator Jinroku to cooperate with the serial murder case, which took place in Sakebu Itoshiki's mansion. Sakebu was a famous artist, who was known f…

Nozomu Itoshiki teaches his students to get themselves used to summer vacation gradually as he believes that a sudden change of state is unhealthy for everyone. Suddenly, Nozomu is in despair, because…

After dismissed from the school as a demon, Nozomu Itoshiki wonders where the devils will end up once they are dismissed from everyone. Nozomu suddenly argues that dismissed people should be provided …

As the school exams approach, Nozomu sniffs at the idea of good luck charms. Just then, he is arrested by mysterious people for being a potential bad luck charm for the students and locks him up in so…

While watching a baseball match, Nozomu wonders about the sad fate of the multi-talented people. If a famous baseball player is as handsome as a model, is he missing a more successful career? Later on…

As Nozomu and Kafuka attempt to find the switch to the town christmas lights, Nami finds she keep switching on other people's switches. Next, Nozomu contemplates on how people making a decision betwee…

Chiri notices Nami wearing brand new trainers in the rain and gets annoyed when people don't consider TPO (a wasei-eigo term meaning Time, Place, Occassion). Nozomu laments that some people do an inco…

Whilst complaining about how people use poetic words that make you skeptical about them, Nozomu gets thrown into a card game by Rin in which excessive writing is applied to their names. As Chiri compl…

Since there's an outbreak of measles in town, Abiru suggests to Majiru that he should get infected right now, for it is quite worse to get them as an adult. Nozomu then proceeds to unveils many more t…

During a walk, Nozomu gets deceived by Maruuchi Shoko and Nedu Miko, who sell him maguro and a block of ice for 15.500 ¥. Nozomu complains that many dealers make up money only after the customers buy …

Nozomu shows how, in a suspicious society, there is more "reverse-surprise" than surprise itself: people, in fact, are more surprised when they expect things to happen, but they do not, than when they…

Whilst waiting for the bus, Nozomu and Chiri talks about how important are emergency measures in one's life. Later, at school, the class finds out Nami's birthday, but, because nobody knew about it, e…

Grabbing an easter egg, Nozomu wonders if came first the egg or the chicken, the panties or the panty-thieves, hope or despair, and so on. Being in a queue clogged up by a woman who's seeking for chan…

Nozomu says that a ghost stole his glasses so the class decides to buy him a new pair. The glasses he gets are tinted and make Nozomu be filled with prejudice and hatred about everything. Rin is home …

It's Valentine's Day and Kagerou is afraid to open his box, because he doesn't really know whether any girl had dedicated a love letter to him or had not. Nozomu tells hit not to open it, in order to …

When Chiri hangs up a painting upside down without noticing, the class are taken through a gallery where involving big mistakes that go unnoticed compared to the minor details. In the second part, Noz…