Knights of Sidonia

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Knights of Sidonia
KOS 1 Cover.jpg
First volume cover of Knights of Sidonia by Tsutomu Nihei depicting the series' protagonist, Nagate Tanikaze, on top of the hand of his mecha, the Tsugumori.
(Shidonia no Kishi)
GenreMecha, space opera[1]
Written byTsutomu Nihei
Published byKodansha
English publisher
ImprintAfternoon KC
MagazineMonthly Afternoon
Original runApril 25, 2009September 25, 2015
Volumes15 (List of volumes)
Anime television series
Directed by
Written bySadayuki Murai
Music byNoriyuki Asakura
StudioPolygon Pictures
Licensed by
Sentai Filmworks (home video)
Original networkMBS, TBS, CBC, BS-TBS, AT-X
English network
Original run April 11, 2014 June 26, 2015
Episodes24 (List of episodes)
Anime film
Directed byKōbun Shizuno
Written bySadayuki Murai
Music byNoriyuki Asakura
StudioPolygon Pictures
Licensed by
ReleasedMarch 6, 2015 (2015-03-06)
Runtime134 minutes
Anime film
Knights of Sidonia: Ai Tsumugu Hoshi
Directed by
  • Hiroyuki Seshita (chief)
  • Tadahiro Yoshihira
Written bySadayuki Murai
Tetsuya Yamada
Music byShūji Katayama
StudioPolygon Pictures
Released2021 (2021)
Wikipe-tan face.svg Anime and manga portal

Knights of Sidonia (Japanese: シドニアの騎士, Hepburn: Shidonia no Kishi) is a space opera and mecha manga series by Tsutomu Nihei, serialized by Kodansha in their magazine Monthly Afternoon between April 2009 and September 2015, localized in English by Vertical. The series tells the story of Nagate Tanikaze, an "under-dweller" destined to become a Garde pilot, whose mission is to defend the massive spaceship Sidonia from a hostile alien species called Gauna. An anime television series adaptation, produced by Polygon Pictures, aired between April and June 2014 and a second season aired between April and June 2015. A brand-new film will premiere in 2021.



The story is set in the year 3394, a thousand years after mankind flees from Earth after it was destroyed by a race of shapeshifting aliens – the Gauna (奇居子ガウナ), aboard hundreds of massive spaceships created from the remains of the planet. One such ship is the Sidonia, which has developed its own human culture closely based on that of Japan where human cloning, asexual reproduction, and human genetic engineering, such as granting humans photosynthesis, are commonplace. It is also revealed that the top echelons of this society have secretly been granted immortality. With a population of over 500,000 people, Sidonia is possibly the last human settlement remaining as the fates of the other ships are unknown.

Little is known about the true nature of the Gauna or their motivation for attacking humanity. Each Gauna has a near invulnerable core protected by a huge mass of malleable material known as "placenta" (胞衣, ena). Once the ena is shed away and the core is destroyed, the Gauna's body disintegrates.[2]

Sidonia is defended by large mechanized weapons called Gardes (衛人, Morito) whose weaponry and mobility is powered by "Higgs particles" (ヘイグス粒子, Heigusu Ryūshi),[3] armed with a high-output cannon for long range assaults and a special spear known as "Kabizashi" for close combat. The tip of the kabizashi is made of a rare and little-understood material which has the unique property of being able to destroy a Gauna's core. Later the Guardians are also equipped with firearms whose ammunition have the same material of the Kabizashi after a means to artificially mass-produce it is discovered. Most people in the surviving human population are screened and drafted as Guardian pilots at a young age, if they are shown to be capable of piloting them.


The story follows the adventures of Garde pilot Nagate Tanikaze, who lived in the underground layer of Sidonia since birth and was raised by his grandfather. Never having met anyone else, he trains himself in an old Guardian pilot simulator every day, eventually mastering it. After his grandfather's death, he emerges to the surface and is selected as a Guardian pilot, just as Sidonia is once again threatened by the Gauna.



The manga is written and illustrated by Tsutomu Nihei. It debuted in Kodansha magazine Monthly Afternoon's June issue in 2009. Since then, 13 tankōbon have been released. The manga has been licensed in North America by Vertical,[4] who released all fifteen volumes in English between February 5, 2013, and April 26, 2016.[5][6] The manga ended on September 25, 2015.[7]


An anime television series adaptation, produced by Polygon Pictures, premiered on April 10, 2014 and ended its first season on June 26, 2014, on MBS and later on TBS, CBC and BS-TBS.[8][9] The series was directed by Kobun Shizuno, assisted by Hiroyuki Seshita, with scripts by Sadayuki Murai and character designs by Yuki Moriyama.[10] The series has also been localized and streamed by Netflix in all of its territories since July 4, 2014, becoming the service's first original anime,[11] as well as the first anime series on Netflix available in Dolby Vision/HDR (High Dynamic Range).[12] The first season has been licensed for home video release by Sentai Filmworks.[13] The opening song is "Sidonia" by Angela and the ending song is "Show" () by Eri Kitamura. A second season aired from April 10, 2015 to June 26, 2015, with Kishi Kōshinkyoku (騎士行進曲, Knight March) by Angela as the opening song and "Requiem" by CustomiZ as the ending song.[14] The second season was released on Netflix on July 3, 2015,[15] and has been licensed by Sentai Filmworks for home video distribution.[16] In 2017, a third season for the series was confirmed to be in development by director Hiroyuki Seshita.[17] However, in July 2020, the third season was revealed to be a new film that adapts the ending of the manga series.[18]


A new anime film, titled Knights of Sidonia: Ai Tsumugu Hoshi was announced on July 3, 2020. Hiroyuki Seshita will serve as chief director, while Tadahiro Yoshihira serves as director for the new film, with Polygon Pictures returning for production. Sadayuki Murai and Tetsuya Yamada are returning to write scripts, while Shūji Katayama is composing the music. The rest of the staff and cast are returning to reprise their roles. The film is set to premiere in 2021.[19]


The manga was ranked #47 in Oricon Charts on October 30, 2013 with an estimate of 20,934 copies sold.[20] Carlo Santos gave the first manga volume a B stating, "It's got a young man piloting a giant robot against alien enemies, but Knight of Sidonia is no Evangelion. Yet it's not as bleak or incomprehensible as Tsutomu Nihei works like Blame! or Biomega, either—rather, it's the best of both worlds, bringing Nihei's hard sci-fi mentality into a more conventional space-adventure environment."[21] The Young Adult Library Services Association listed Knights of Sidonia in its 2014 list of Top 10 Graphic Novels for Teens.[22]

The anime series received positive reviews, even from famous members of the Japanese anime/game industry, like Hideo Kojima, creator of the Metal Gear series, who claims that "It's a kind of anime that we haven't seen for a while that has that sci-fi spirit. Using digital technology cultivated through games, it creates animation that encapsulates Japan's cultural assets like manga, cel animation, kanji, giant robots, etc. What's born is a unique made-in-Japan work that could never be cooked up in Hollywood. Japanese culture has lost its 'cool', and Knights of Sidonia will be the white knight that saves it". Other industry pros left acknowledgements as well, including Akiko Higashimura, Digitarou and Yoshinao Dao.[23]


  1. ^ Eisenbeis, Richard. "Knights of Sidonia Is a Mecha Anime with a Realistic Twist". Kotaku. Retrieved 2019-02-04.
  2. ^ Nihei, Tsutomu. Knights of Sidonia Vol. 2. Vertical inc, New York. p. 89. ISBN 9781935654810.
  3. ^ It's different from Higgs Boson (ヒッグス粒子, Higgusu Ryūshi) in Japanese
  4. ^ "Vertical Adds Tsutomu Nihei's Knights of Sidonia Manga". Anime News Network. 2012-06-11. Retrieved 2012-06-11.
  5. ^ "Knights of Sidonia, Volume 1". Random House. Retrieved 2013-05-17.
  6. ^ "Knights of Sidonia, Volume 15". Random House. Retrieved 2019-08-09.
  7. ^ "Knights of Sidonia Manga Ends on September 25". Anime News Network. August 23, 2015. Retrieved August 23, 2015.
  8. ^ "Tsutomu Nihei's Knights of Sidonia Manga Gets Anime". Anime News Network. 2013-05-16. Retrieved 2013-05-17.
  9. ^ "シドニアの騎士|放送・配信情報". Archived from the original on 2014-03-25. Retrieved 2014-03-25.
  10. ^ "Knights of Sidonia Anime's 1st English-Subbed Promo Streamed". Anime News Network. 2013-07-05. Retrieved 2013-07-05.
  11. ^ "Netflix to Stream Knights of Sidonia Anime in Summer 2014". Anime News Network. 2013-12-12. Retrieved 2013-12-12.
  12. ^ McAlone, Nathan. "HDR is going to change how you watch TV — here are the movies and shows currently available, and where to find them". Business Insider.
  13. ^ "Sentai Filmworks Licenses Knights of Sidonia for Home Video". Anime News Network. 2015-02-23. Retrieved 2015-02-23.
  14. ^ "'Knights of Sidonia: Battle for Planet Nine' coming April 2015". Archived from the original on 2015-04-02. Retrieved 2015-03-16.
  15. ^ "Knights of Sidonia: Battle for Planet Nine's English Trailer Unveils Netflix Premiere Date". Anime News Network. 2015-06-04. Retrieved 2015-06-04.
  16. ^ "Sentai Filmworks Licenses, "Knights of Sidonia Season 2: Battle for Planet Nine"". Sentai Filmworks. 2016-01-19. Retrieved 2016-01-19.
  17. ^ "More Blame and Knights of Sidonia Anime in Development". Crunchyroll. Retrieved November 9, 2018.
  18. ^ Patrick Frye (July 3, 2020). "Knights of Sidonia 'Season 3' is a movie: Knights of Sidonia: The Star Where Love is Spun release date in 2021". Monsters and Critics. Retrieved July 3, 2020.
  19. ^ "Knights of Sidonia Gets 2021 Film With All-New Story". Anime News Network. 2020-07-02. Retrieved 2020-07-02.
  20. ^ "Japanese Comic Ranking, October 21–27". Anime News Network. 2013-10-30. Retrieved 2013-11-29.
  21. ^ "Neverwinter Knights". Anime News Network. 2013-02-12. Retrieved 2013-11-29.
  22. ^ "Strobe Edge Ranks in YALSA's Top 10 Graphic Novels for Teens". Anime News Network. 2014-02-01. Retrieved 2013-02-16.
  23. ^ "Metal Gear's Hideo Kojima Praises Knights of Sidonia Anime". Anime News Network. 2014-06-21. Retrieved 2014-06-21.

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