Sayonara Zetsubou Sensei
#1 - When I Came Out Of The Tunnel It Was White 8.14
Season 1 - Episode 2
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 to be a hikimori there. The next day, Nozomu notes that another of his students, Matoi Tsunetsuki, didn't show up that day. Ms. Arai brings Nozomu to the counseling room, where she explains Matoi's obsessive-stalker tendencies to Nozomu. That night, he attempts to dissuade her from bothering her last boyfriend; however, his strategy backfires on him. This turns him into Matoi's latest object of affection.
#2 - That's Impossible Isn't There an Original
Season 1 - Episode 11
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 that are used by many people to escape or to shift blame from their mistakes. In the second part, Nozomu, Majiru, and Matoi are sitting in a kotatsu in Nozomu's house. Chiri then arrives to clean up everything. After the cleaning, Nozomu keeps wishing that humans can hibernate and finally he and the regular cast decide to take a winter hibernation. However, after the group nearly dies of carbon monoxide poisoning, Nozomu decides to simply leave. Fūra goes to find him, only to witness him being struck by a runaway trolley. The episode ends at the hospital as the entire class waits for Nozomu to leave surgery.
#3 - Goodbye, Zetsubo Sensei 7.22
Season 1 - Episode 1
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 his life. Nozomu Itoshiki, the man, eventually cannot take anymore of the girl's ridiculous ramblings, and runs off to school to start homeroom at the beginning of a new school year. When Nozomu walks in the door, he finds Kafuka is one of his students.
#4 - She Who Has / Russian Time Song / Withering Heights Part 2
Season 3 - Episode 2
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 Kiri is taking some medicine to treat her cold, Nozomu explain to Majiru why did it took a moment for the medicine to take effect : the dreaded time lag, which can be observed in a lot of phenomenon. As the journey to find themselves continues, more of Nozomu's students embarks on the bus and procede to reveal some parts of their personality. In the end, Kafuka leads the group to expose themselves to reality and at the same time the acceptance of their true self as they are, after which she concludes by singing a heartwarming song.
#5 - Highway to Hell / The Spring Postman Always Rings Twice / Withering Heights
Season 3 - Episode 1
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 solitary, which he is quite pleased about. However, the girls break in and rescue him, and it comes to light that the students actually see Nozomu as a good luck charm. Next, everyone has different opinions of what tells them spring has come, which for some people involve strange dancing people. Later, Nami tells Nozomu she is going on a trip to find herself, whereas Nozomu says it is really a journey that exposes a person's true nature.
#6 - Go Fly Over That Country
Season 1 - Episode 3
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 personality disorder stemming from cultural identity confusion. Nozumu prevents her from committing suicide but sees her underwear and is sued. While Nozomu is absent from school Chiri investigates his students and discovers that Maria is an illegal immigrant.
#7 - Leap Before You Look
Season 1 - Episode 6
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 back to his hometown in Kuraizawa for an arranged marriage. One way or another, the girls somehow all end up arriving at Kuraizawa, where they are taken to the Itoshiki residence by Tokita. Here they find out that the Itoshiki tradition for arranged marriages simply involves both parties exchanging eye contact. The rest of the episode involves Nozomu and his attempts to avoid eye contact with the girls and various other people/objects.
#8 - Do Androids Dream of Electric Sheep? / Failure as a General / Yeah, It's a Surprise, I Muttered Hollowly
Season 3 - Episode 7
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 the goods, using tricks. The too mild winder is caused by Shogun Frost who refuses to do his work anymore. The class helps him to find a new job. The class prepares a surprise party for Nozomu, even if his birthday is not on that day, but on 4th of November.
#9 - Spynapple Pudding / When The Fruit of Exposure is Ripened / A Half of the Criminal Investigation Report
Season 2 - Episode 8
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, including those who do not have any malicious intent, is suspected of being spy. Suddenly, Kafuka gives him a secret mission and Nozomu has to escapes from the greater suspicion by finding a good place to isolate himself. At the end, Kafuka devises a plan of 'positive counter intelligence' to help him out by leaking unreliable rumors such as urban legends to confuse everyone in the society. In the second part of the episode, Nozomu claims that pretentious side of everyone is ultimately exposed in May. At the end, many of Nozomu's students' hidden secrets are exposed, though some of them are merely his imagination. In the third part of the episode, many things in the world are not divided exactly half and half despite their claim. To correct such mistakes in the world, Chiri Kitsu enforce the ratio of everything into exactly 50/50 ratio, which produces various results at the end.
#10 - I'm a Social Outcast by Fate
Season 1 - Episode 8
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 begins to talk about how some people are destined to be overshadowed by others, no matter how hard they work. The second part of the episode has the class undergo criticism training. Usui continues to be ignored until a divine wind blows away his hair, revealing his bald head and allowing everyone in the class to see him. He fears that people in the class will begin mocking him, but Kafuka suggests that Chie insults him instead, which he seems to enjoy.
#11 - An Artist By the Roadside / I Have Mostly Read Shameful Books / The Inconspicuous Summer
Season 2 - Episode 4
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 middle of their conversation, which Ikkyū-san later joins, the alien race El Niño suddenly invades Japan with their mecha army. Fortunately, Chiri digs up an ancient mask and activates its hidden power to defeat the alien force. The aliens admits their mistake of paying attention to trivial aspects of Nozomu's students rather than the progress of their invasion. At the end, Nozomu and Ikkyū-san do not remember how Japan was saved from the alien invasion, as they were paying attention to trivial details of the battle scene. In the second part of the episode, Jun Kudō is reading books in the school library, while Nozumu is worried about Jun's desire to read everything in the world, which could eventually include Nozomu's own embarrassing mind. When Nozomu's other students visit the school library, Jun tells heart-warming stories that move every one of them to tears. Nozomu feels even more certain of Jun's ability to read people's minds, so he puts himself in a freezing room full of penguins to prevent Jun from reading the conclusion of the episode. The third part of the episode shows what happened between Nozomu's nephew, Majiru Itoshiki, and Kiri Komori while the alien invasion of the 'A Painter by the Roadside' episode was undergoing outside the house.
#12 - The Evening Primroses on Fuji are Wrong 6.00
Season 1 - Episode 9
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. He asks the class to identify mistakes in their lives, after pointing out several of his own. After Nozomu contradicts himself, saying that a mistake was the correct action, Kafuka reasons that if a mistake comes to light, it is correct, resulting in many people approaching her, confessing their mistakes, making them correct. In the end of the first part, a boy approaches Nozomu, calling him "Dad." The second part of the episode reveals that he is actually Nozomu's brother's child, Majiru Itoshiki. Nozomu asks him to prove that he is indeed his nephew, and then asks all of his students to prove that they are the real one. When Majiru asks Nozomu to prove he is genuine, Nozomu is unable to come up with a response, and runs off. The episode ends with a sequence that deals with Majiru's apparent hair fetish.
#13 - Deteriorating Stream / A Fool's Adequacy / The First-time Condition
Season 2 - Episode 10
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 suddenly realizes that such practices of intentional 'detuning' are quite popular in Japanese society. Nozomu points out that some people use 'detuning' as an excuse for their faults, Kafuka explains that people in general feels more comfortable with 'detuned' products rather than the cutting-edge one. In the second part of the episode, Nozomu states that there is an increasing tendency of saying 'not bad, not bad' at terrible things to comfort the victims. However, Nozomu explains that such instance can turn out to be a 'mini-propaganda', which could unknowingly mislead other people to believe in the same way. In the third part of the episode, Nozomu refuses to teach the first period class, because he was previously rejected by a restaurant in Kyoto as he was a first-time customer. He realzies that the Sayonara Zetsubō Sensei anime series could have been difficult series to approach for the first-time audience, so he decides to start the first-time-friendly episode. However, he is annoyed by the constant inquries from the first-time audiences. Thus, he decides to only invite regular audiences, but they seem to knows too much about the series. Ultimately, he decides to also reject the regular audience from the show.
#14 - One Morning, When Gregor Samsa Awoke, He was Carrying a Portable Shrine 6.40
Season 1 - Episode 7
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 literature with mixed results. At Comiket, Chiri reads Fujiyoshi's yaoi doujinshi. On the way back from Comiket, they meet Kafuka, who talks Chiri and Fujiyoshi into drawing more manga that strictly adheres to the above mentioned format. The second half of the episode involves the girls at a matsuri, where overzealous festival-goers begin piling random objects and people on portable shrines and dancing and parading around with them.
#15 - House of the Girl in Glasses / Progress in Confinement / The Clothing Seen By the Sage Leglipht
Season 3 - Episode 11
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 and bored but, because she cannot leave her estate, in order to get the near ramen shop she buys and destroy all the houses on the way. During sport time Nami lifts her leg in order to gain males' attention, this makes Nozomu think about people provoking with intention.
#16 - You Mustn't Burn the Raw Yatsuhashi
Season 1 - Episode 10
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 people if they do pretend they are. The second part of the episode starts with the class taking a field trip preview, where Chiri make a large itinerary guide of the place. They move quickly all over Kyoto until they come to a temple. There the monk enlightens them about the use of preview. The episode ends with Nozomu take Chiri to visit his preview funeral and gravesite, where she gets angry and hits him, sending him to the hospital and putting him in a coma (which Kafuka calls a "preview of the afterlife").
#17 - After the Third Time / The Unburied Secret / Progress in Confinement Part 2 / Naughty Teacher Kaere
Season 3 - Episode 12
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 create a Schrodinger's box, in which the possibilities of the presence of any letter and the possibilities of absence are both infinite. A missile drops on the school's field and the class tries despairingly to hide it. An interviewer is, in fact, going to come to the school. After purchasing all the houses and getting the ramen shop Rin notices how the flavour has changed because of changing of her new management.
#18 - Revenge of the Shit / We Are Linus / The Optimism Prize / Kiyohiko Night
Season 3 - Episode 13
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, Nozomu accidentally causes Kiri's blanket to fly away, and the class go on a search for it. However, it flies onto a government member who decides to mass produce it so people will feel more secure. Soon everyone decides to become civil servants and the world becomes impoverished. In the third part, Nozomu and company discuss buzzword generals and are disturbed by one. Maria then mentions "Kiyohiko's Night" (a mispronunciation of Silent Night) and a Kiyohiko shows up, but is unprepared for the abrupt pun.
#19 - From Elbow to knee 7.14
Season 1 - Episode 4
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 inconvenience, before discovering Abiru's obsession with pulling the tails of dangerous animals. The latter half of the episode concerns Meru Otonashi, who is silent and shy in person, but remarkably abusive via text-messaging, her only means of communication.
#20 - Removing Toxins and Stains
Season 1 - Episode 5
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 will know whether they are living "above their station." Kitsu seizes on this idea, scolding everyone who possesses any luxuries, appalling Nozumu to the point where he decides to go on a hedonistic binge before killing himself. In the second half he encounters some of his students at a hot spring and is frightened to learn the spring has the power to remove their "toxicity" giving them well-adjusted personalities.
#21 - Seventeen Years Old Don't You Want To Grab Your Wrinkles? / Duty and Soldiers / Don't Say It So Casually! Melos Stood and Retorted Furiously
Season 2 - Episode 3
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 Japanese people's indifference to their ages and introduces a new character, Manami Ōkusa, who is a married high school student. In the second part of the episode, Nozomu criticizes the society where individuals are compelled to serve their 'duties' to meet other people's expectations. These 'duties' are often very superfluous and trivial. However, Kafuka points out the irony that Nozomu himself is a part of such a society, as the girls around him are expected to serve their various 'duties' to take care of their teacher. In the third part of the episode, Nozomu is in despair about society, where serious matters are often taken too lightly. Several of Nozumu's students provide their experiences of such a trend. After Rin Itoshiki makes an appearance as one of Nozomu's new students, Nozomu and his students decide to reverse the trend by treating various trivial matters with serious attitudes, which eventually becomes an addicting habit for everyone.