Sayonara, Zetsubou-Sensei

Sayonara, Zetsubou-Sensei (さよなら絶望先生) is a Japanese manga series written and illustrated by Kōji Kumeta. It was serialized in Kodansha's manga magazine Weekly Shōnen Magazine from April 2005 to June 2012, with its chapters collected in 30  volumes. The series follows Nozomu Itoshiki, a teacher who takes all aspects of life, word, and culture in the most negative light possible. The series satirizes politics, media, and Japanese society.

The manga was adapted into three anime television series and two sets of original video animations (OVAs) animated by Shaft between 2007 and 2010.

The manga has had over 5 million copies in circulation. In 2007, Sayonara, Zetsubou-Sensei received the 31st Kodansha Manga Award for the category.

Plot and setting
Sayonara, Zetsubou-Sensei revolves around a very pessimistic high school teacher named Nozomu Itoshiki who, at the very beginning of the series, tries to hang himself on a sakura tree. He is saved by an extremely optimistic student known only as Kafuka Fuura (though in her effort to save his life, she almost kills him). She explains to him that it is simply unimaginable that he would hang himself on such a nice day, especially in front of such beautiful trees. She decides to nickname Nozomu "Pink Supervisor" (桃色係長), and offers to pay him fifty yen to call him by that nickname. After having enough of the strange Kafuka, Nozomu bolts to the school and starts his homeroom class, but the attempt to escape was in vain as he finds that she is one of his students. Not only that, but Kafuka is just the tip of the iceberg, due to each and every student in his class representing a new personality quirk or bizarre obsession, posing challenges that he must overcome in spite of himself.

Each chapter or episode of the series revolves around a particular aspect of life, Japanese culture, or a common phrase in the Japanese language. Typically, this involves the subject being taken either to its most logical extreme (a discussion of, the practice of "descending" from the public to the private sector, results in Nozomu "descending" until he reaches his previous life), or taken literally (in Nozomu's family, , normally a meeting between a potential match in an arranged marriage, is instead a marriage made official by eye-contact). On other occasions, Nozomu challenges his students to think about the negative aspects of something usually considered positive. These in-depth, off-kilter analyses (along with the reactions of the students according to their own personality quirks) are usually brought to a head with a punchline based on the overall premise, or more rarely, a non-sequitur gag or piece of fan service.

While ostensibly set in the present day relative to its original serialization, the manga uses a variety of aesthetic tropes that evoke the Taishō period, the relatively liberal period in Japan before the rise of militarism in the Shōwa period. Many aesthetic aspects are meant to evoke Taishō liberalism, Taishō Romanticism (see Japanese literature) and Taishō arts (see Hanshinkan Modernism). This is exemplified by Nozomu and Matoi consistently wearing a kimono and hakama (an obsolete style of Japanese school uniforms in the late 1800s), but is also evident in stylistic choices such as the anachronistic appearance of architecture, vehicles, and technology indicative of the Taishō period. However, the fashion of women typically follows the modern girl trend, which is a break from the Meiji period and signifies the style of the Taishō period.

Chapter titles are oblique references to literature, modified to suit the needs of the chapter. The chapter title pages are drawn to resemble karuta cards, with an illustration in a silhouetted kiri-e style. The anime carries this further through a washed-out, grainy visual style that mimics film, and frequent use of katakana (rather than hiragana) as okurigana. The anime also regularly refers to the date as though Emperor Hirohito were still alive, such that Heisei 20 (the twentieth year of Emperor Akihito's reign, or 2008 by the Gregorian calendar) becomes "Shōwa 83".

Manga
Sayonara, Zetsubou-Sensei is written and illustrated by Kōji Kumeta. It was serialized in Kodansha's manga magazine Weekly Shōnen Magazine from April 27, 2005, to June 13, 2012. Kodansha collected its chapters in 30 volumes, released from September 16, 2005, to August 17, 2012.

In North America, the manga was licensed for English release by Del Rey Manga. Eight volumes were released from February 24, 2009, to November 23, 2010. The series was license rescued by Kodansha USA in 2010. They released volume 9–14 from June 21, 2011, to April 3, 2012.

Anime
Sayonara, Zetsubou-Sensei was adapted into a 12-episode anime television series, directed by Akiyuki Shinbo and animated by Shaft. It aired in Japan on TV Kanagawa and other networks between July 7 and September 23, 2007. The first opening theme is "Hito Toshite Jiku ga Bureteiru" (人として軸がぶれている), performed by Kenji Ohtsuki featuring Ai Nonaka, Marina Inoue, Yū Kobayashi, Miyuki Sawashiro and Ryōko Shintani. The second opening theme is "Gōin ni Mai Yeah" (強引niマイYeah～), performed by Ai Nonaka, Marina Inoue, Yū Kobayashi, Miyuki Sawashiro and Ryōko Shintani. The ending theme is "Zessei Bijin" (絶世美人), performed by Ai Nonaka, Marina Inoue, Yū Kobayashi and Ryōko Shintani. A special 50-minute DVD summary episode titled Sayonara, Zetsubou-Sensei Jo: Zetsubō Shōjo Senshū (さよなら絶望先生 序〜絶望少女撰集) was released on January 1, 2008. A second DVD summary episode was released on August 27, 2008.

A 13-episode second season, titled (Zoku) Sayonara, Zetsubou-Sensei (【俗・】さよなら絶望先生), was broadcast from January 5 to March 29, 2008. The opening theme is "Kūsō Rumba" (空想ルンバ), performed by Kenji Ohtsuki and Zetsubō Shōjo-tachi. The opening theme for episode 7 is Lyricure Go Go! (リリキュアGOGO!), performed by Ai Nonaka, Marina Inoue and Ryōko Shintani. The series' three ending themes are "Koiji Romanesque" (恋路ロマネスク), performed by Zetsubō Shōjo-tachi, "Marionette" (マリオネット) by ROLLY and Zetsubō Shōjo-tachi, and "Omamori" (オマモリ), performed by Zetsubō Shōjo-tachi. A 3-episode original animation DVD (OAD), titled Goku: Sayonara, Zetsubou-Sensei (獄・さよなら絶望先生), was released on October 17, December 10, 2008 and February 17, 2009.

A 13-episode third season, titled Zan: Sayonara, Zetsubou-Sensei (懺・さよなら絶望先生), was broadcast from July 4 to September 26, 2009. The opening theme is "Ringo Mogire Beam!" (林檎もぎれビーム!), performed by Kenji Ohtsuki and Zetsubō Shōjo-tachi. The first ending theme is "Zetsubō Restaurant" (絶望レストラン), performed by Zetsubō Shōjo-tachi, and the second ending theme is "Kurayami Shinchū Sōshisōai" (暗闇心中相思相愛), performed by Hiroshi Kamiya. A 2-episode OAD, titled Zan: Sayonara, Zetsubou-Sensei Bangaichi (懺・さよなら絶望先生 番外地), was released on November 17, 2009 and February 17, 2010. A special episode was offered to people who bought all three of Japanese Blu-ray Disc Boxes of the series and was released on January 31, 2012.

In North America, Media Blasters licensed the first Sayonara, Zetsubou-Sensei anime series in February 2010 and was going to release the first English-subtitled DVD volumes in May 2010. However, the series was put on hold until March 2013, when they dropped the rights to the series. At Anime Expo 2019, it was announced that Nozomi Entertainment licensed the series for a Blu-ray release in 2020. In May 2021, Nozomi Entertainment explained that the series' release was delayed due to lack of scripts in Japan. Besides this, the company announced that they will release the entire anime franchise, including all three television anime seasons and both OVAs.

Internet radio show
An Internet radio show titled Sayonara Zetsubō Hōsō (さよなら絶望放送), produced by Frontier Works organized by Hirotaka Tahara and directed by Futoshi Satō, began airing on August 28, 2007 on Animate TV. The show is co-hosted by Hiroshi Kamiya and Ryōko Shintani who played Nozomu Itoshiki and Nami Hitō respectively in the anime. Each episode started with a mini drama between Nozomu and Nami then followed by corners replying mails from listeners in several theme related to the series. The show is often referred as SZBH because of the in-show call sign. As of the 180th episode, the show has received over 153,000 mails.

The show features six special broadcast. The first one was aired on November 27, 2007 titled Tokimeki Nāmin Night (ときめきナーミンナイト (TMNN)) which acts as if Ryōko Shintani is a sole host with Hiroshi Kamiya as a guest. The second and third were aired as the second and third season breakthrough commemoration on February 26, 2008 and May 27, 2008 which respectively titled Sayonara Zetsubō Hōsō Senshū: Nyo (さよなら絶望放送撰集・如) and Let's Lilycure Radio (Let's リリキュラジオ! (LLLR)). The fourth special broadcast titled Toki wo Kakeru Radio (時をかけるラジオ) was aired on November 24, 2008 and featured several still image of the in-show character, Sanosuke, marathoning from Kodansha office to the recording studio. The fifth special broadcast was aired on December 31, 2008 and titled Botsu: Sayonara Zetsubō Hōsō (没・さよなら絶望放送). The sixth one was aired on April 15, 2009, titled The Kamiya Hiroshi Show (ザ・神谷浩史ショー).

A special radio event titled Zoku Sayonara Zetsubō Hōsō: SZBH Kaizokuban (賊・さよなら絶望放送～SZBH海賊盤) was held on March 18, 2008 featuring Yū Kobayashi, who plays Kaere Kimura, with Kenji Ōtsuki and Narasaki as guests. The recording of the event was released later as the third DJCD volume. A second radio event titled Kōkai Rokuon Event: Hibiya Kōen Dai-Ongakudō: Yaon (後悔録音イベント≪日比谷公園大音楽堂〜谷怨〜≫) was held on March 24, 2009, featuring Ai Nonaka and Takahiro Mizushima, who play Kafuka Fuura and Jun Kudō, respectively. The recording of this event was released as the ninth DJCD. A total of 21 CDs for the show have been released by King Records. Ten of the CDs contain newly recorded episodes, while the fifth and sixth CDs are the collections of the popular episodes.

Reception
The manga has had over 5 million copies in circulation.

Sayonara, Zetsubou-Sensei won the 31st Kodansha Manga Award for the category in 2007.