A quick note: should you be interested in picking up this manga after viewing the 2014 anime adaptation, you can expect the same general story with a few very noticeable differences. The adaptation has streamlined and condensed the events depicted in chapters 1 – 26 or so, leaving out several events that are key to the manga. You may be confused if you don't start right at the beginning, which I greatly recommend. Both do certain things better than the other. The manga does include a “chapter 0” that was not adapted; make sure to look out for it!
Tsutomu Nihei's “Knights of Sidonia” is an
...
ongoing space odyssey manga with mecha elements, set in a bleak yet hauntingly beautiful vision of the future. It's an exciting story with a slightly formulaic but overall unpredictable narrative crafted with the utmost attention to small details that make the world feel alive. It is, however, not without its flaws.
Humanity's enemy, the Gauna, are mysterious alien creatures composed of “true bodies” encased in regenerating placenta. A Gauna can shape its placenta into anything it desires, frequently doing so to resemble human beings. Should the placenta be breached and the true body be pierced with a mysterious material called “kabi,” the Gauna will immediately disintegrate. Simple enough.
The titular spacefaring megastructure, Sidonia, at approximately five kilometers wide and 29 kilometers long, has too much bulk to directly combat the Gauna. Instead, it relies on a battalion of humanoid robots that require the manual control of pilots (Sidonia's "knights"). These robots, known as Guardians, engage the Gauna while the ship provides support with an arsenal of doomsday weapons such as energy cannons, mass drivers, anti-planet warheads, and a 28 kilometer railgun that would make Mikoto Misaka proud. The latter are so incredibly destructive that the crew needs to assess the repercussions before firing. When Sidonia does fire, you brace yourself and hold on tight.
To keep the formula fresh, new technology is constantly introduced on the human side while each Gauna the ship encounters is unique in some way. Even fights against hordes of your standard disposable Gauna grunt are made interesting by new weaponry or a drastic change in terrain.
The previously mentioned technological breakthroughs are occasionally the answer to a problem, resulting in several instances of deus ex machina. While Tsutomu still manages to make these situations exciting, I would have much rather seen the obstacle overcome with simple ingenuity. This does, however, positively affect the overall story, as Sidonia gradually transitions from prey to predator. Even then, some tech simply blew me away with how cool it was (one word: Mizuki).
Battles are cleverly depicted from two alternating perspectives: the battlefront itself and Sidonia's bridge. Tsutomu uses the bridge, which is dominated by a massive digital display that monitors ongoing activities, to help us better understand the current situation as well as the tactics and maneuvers (which, might I say, are very interesting) that are being employed by the crew. I've found it to be a very effective system.
Perhaps what I love most about Knights of Sidonia is Tsutomu's vision of the future, where the continued survival of the human race has been put above all else. Humanity has resorted to cloning and genetic modification, creating people that can photosynthesize in order to save food rations and a third gender capable of mating with either sex or asexually. It's dark, it's clever, and it's all firmly rooted in real science. Higgs particles - a form of energy utilized by Sidonia - for example, were discovered by the European Organization for Nuclear Research (CERN) in 2012.
Tsutomu adds another layer of depth by depicting advanced technology being juxtaposed with slightly more contemporary instruments. Higgs-based weapons, for example, are used in conjunction with both kabi-based weapons and standard, seemingly powder-based munitions reminiscent of our own time. The technology is not perfect, either; Sidonia is not capable of faster than light travel and must make good use of its limited resources.
As the war effort devours the vast majority of these resources, the ship's residential sector has developed into one of the most imaginative places I've seen in fiction: an intricate patchwork city of suspended lodgings, piping, twisting stairwells, and a variety of colorful OSHA violations - all curving around the ship's railgun barrel. I fell in love at first sight.
Prefacing nearly every chapter are full-page images excerpted from the “100 Sights of Sidonia,” a photographic guidebook of the ship mentioned on occasion throughout the story. One of my favorite entries depicts Izana pressing himself/herself against the oldest “converter pipe” on the ship – a massive industrial pipeline designated as sacred by shimenawa (traditional Shinto rice ropes). Other entries include wind tunnels, fish farms, factories, and bathhouses, all of which secure the vastness and diversity of the ship while simultaneously painting a picture of its culture. It's a subtle addition but it adds a lot.
I can't emphasize enough just how well Tsutomu incorporates these subtle details. One particular supporting character, a Guardian pilot by the name of Norio Kunato, is named after edible seaweed (known as “nori” in Japanese, which is notable for its use as a wrap for onigiri and sushi). During Sidonia's millennium adrift, seaweed has “fallen out of production” and has become a precious commodity, rendering the name culturally acceptable. I absolutely love it.
The people who occupy this world sound interesting enough; Knights of Sidonia delivers a cast of mole men, human/bear hybrids, hermaphrodites, clones, androids, immortals, aliens - you name it. Unfortunately, for characters with such interesting backgrounds, the majority seem to fall flat. It's not that they're unlikable - they are and can prove to be quite fun - it's just that their actions have a habit of seeming... two-dimensional. Perhaps the most prominent example is our beloved hero, Nagate Tanikaze.
Throughout the story we might hear that Nagate vocalized his opinions on an important matter, such as demanding the reinforcement of the armor on certain Guardian models, but we never explicitly witness it. What we do see is a young man who likes to eat and is just about as submissive as he is stereotypical and oblivious to his harem, which slowly but surely grows stronger. Again, he never manages to be unlikable per se, yet he can prove to be boring and undergoes practically no character development after the opening chapters, which is a shame.
The other recurring characters manage to be somewhat more lively and, well, more feminine (this includes the hermaphrodite). I find the most interesting ones to be those operating the bridge, especially Yuhata Midorikawa and the mysterious masked captain, Kobayashi. While the horrors of the Gauna and the reality of death almost never act as a catalyst for character development, these characters are noteworthy exceptions.
Ultimately, the strongest character is Sidonia itself.
Sidonia is alive. It's a living, breathing place. It's familiarity and safety. It becomes home; for not just the characters but the reader, and I eagerly await the next chapter that will bring me back.
Tsutomu Nihei's “Knights of Sidonia”
UPDATE 1: July 1st, 2014 (revised for clarity and grammatical errors)
UPDATE 2: July 2nd, 2014 (paranoia)
This review will continue to be revised as more chapters are published.
Story
+ Incredible attention to detail
+ Unpredictable narrative
+ Alternating perspectives during battle
- Deus ex machina
Art
+ A vast, beautiful, and everchanging world to explore
+ Sidonia's 100 Sights
Character
+ Interesting backgrounds
- Two-dimensional mannerisms/idiosyncrasies
- Lack of character development
Enjoyment
+ Incredible world
+ An exciting narrative
- Deadpan hero
Story: 9 | Art: 8 | Character: 7 | Enjoyment: 8
Overall: 8 (very good)
I only hope that you enjoy the manga as much as I have ~
 Alternative TitlesSynonyms: Knights of Cydonia, Cydonia no Kishi Japanese: シドニアの騎士 More titlesInformationType: Manga
Volumes: 15
Chapters: 78
Status: Finished
Published: Apr 25, 2009 to Sep 25, 2015
Demographic:
Seinen
Serialization:
Afternoon Authors:
Nihei, Tsutomu (Story & Art) Statistics Ranked: #16862 2 based on the top manga page. Please note that 'R18+' titles are excluded. Popularity: #545
Members: 34,613
Favorites: 904 Available AtResources | Reviews
Filtered Results: 17 / 20
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Jun 30, 2014
A quick note: should you be interested in picking up this manga after viewing the 2014 anime adaptation, you can expect the same general story with a few very noticeable differences. The adaptation has streamlined and condensed the events depicted in chapters 1 – 26 or so, leaving out several events that are key to the manga. You may be confused if you don't start right at the beginning, which I greatly recommend. Both do certain things better than the other. The manga does include a “chapter 0” that was not adapted; make sure to look out for it!
Tsutomu Nihei's “Knights of Sidonia” is an ... 
Jan 12, 2018
Years. For years I had an idyllic vision of how Knights of Sidonia would end. Heroic sacrifices, ruminations on loss, heartbreak, and the futility of a never ending battle, an epic, possibly tear-jerking conclusion to Sidonia's story.
But no. Knights of Sidonia might have the most disappointing ending in all of manga. Characters arcs are thrown in the trash; plot lines come crashing down in flames. Carefully cultivated motifs that run throughout the entirety of the first 2/3rds of the manga are jettisoned in favor of a long, hard to follow action scene and a generic boss battle. Then, tragedy. We're subjected to the most sugary, cop-out, ... 
Apr 11, 2011
This manga is insane and amazing.
Story - The story is strange and will not go exactly where you expect. When I first started reading, I thought he was just doing a mecha for fun but now I realize that he is trolling us really hard. This series has all the standard mecha features, but everything is twisted and insane and delightful. Art - The art is great, even if it's a little different from his other works. Character - The characters are really fun. I can't say that there is lot of what I would call actual character development, but they are ... 
Jun 12, 2016
Our favourite cyberpunk artist has finally gone mainstream, dumbed his latest work down to a level that we mere mortals can consume & digest without difficulties.
Nihei Tsuomu's works are very unique. 'Blame!' was a manga you had to re-read a few times to actually realize the plot. The magaka refused to narrate even the most critical things. Compare that to the typical manga/anime with text-bubbles, notes & what-nots... you were left with your own devices(imagination, wit & interest) to parse the story. Yet the story was complex, layered and you were free to come up with your own interpretations. But, whatever your impression was ...
Feb 21, 2010
Sidonia no Kishi is an excellent work by Nihei Tsuomu.He has improved his style, adapting it to the more usual manga style but still keeping his lines and proportions.
Nihei uses the "Gauna" from other works(Creatures able to change the outer layer of their body into armor,limbs,weapon, etc.). The main character, Tanikaze Nagate, is a quiet guy who is confused from the new world that he has discovered.It seems that he will have to choose between two girls(one being from the third gender-not male nor female). The Gauna is a very powerful race nearly indestructible, but they can be killed by using a special spear on their ...
Mar 18, 2018
You might look at this and say wow, it looks pretty good not to mention the artwork looks amazing!
But holy Christ I can write a paper on why I hated the story (and how the ending completely ruined everything for me). I'll save that for the last part because I can rant on that forever. Art: It looks great, down to earth and rather realistic in some cases. The detail goes down hill a bit for me as it continues on but overall it's rather great. Not the best as it tends to get sloppier in fights or even towards the final few chapters. It isn't the ...
Aug 25, 2013
Knights of Cydonia will intially come as a surprise to long time Tsutomu fans, deviating from his recently established stylised realism and grim isolation for a more standard anime caricature approach and deceivingly lighter tone to go with it.
The series is a take on the 'real mech' genre [similar to Gundam and other space based mech series] in the way only Tsutomu can do it: mega structures and scale that boggles the mind. Ready to challenge conventional sci fi tropes at every turn this is a series that takes its context to heart. Artistically it could be described as 'pruned back', relying on less ... 
Mar 19, 2023
Knights of Sidonia manga was Tsutomu Nihei's take on the Mecha branch of Sci Fi genre. All of Tsutomu Nihei's works are Sci Fi, he is a Sci Fi / Cyber Punk mangaka. All of Tsutomu Nihei's works are connected, they share the same Universe, but the characters and places in each of his mangas are different.
If you read one of his works like The Blame! before reading Knights of Sidonia, you have seen familiar names like Toha Heavy Industries and Graviton Radial Emitter in the manga. Toha Heavy Industries was the big corporation which developed all kinds of technologies from mechas to Graviton Radial ... 
May 26, 2014
** If you're like me and don't read mecha manga, I would suggest watching the anime first before starting on the manga. I have a hard time getting most of the fighting/action scenes in these kinds of manga, so seeing the animated versions of those scenes helped me a great deal in visualizing the action scenes in the manga. **
Humans no longer live on a planet, but in an intricate spaceship called Sidonia, constantly on the move in the galaxy. The biggest threat to Sidonia are the Gauna, alien life forms who seemingly want to destroy Sidonia and mankind. In order to fight and kill ... 
Jan 4, 2021
From chapter 1 to 78 a 4/10.
Wow! that was very disappointing. Especially the final arc. Characters were thrown in the trash along with their developments. Only for a horrible romance to happen, then die, then came back again to life. The plot is all over the place in the final half. The worst plot point and holes (little robot killer?). The first arcs had some very bad artistic decisions, that made the art descriptions and scenes very blurry and hard to understand, everything was always in a dark tone. But that was just the first half of the manga. After that someone must have called ... 
Dec 3, 2022
Low-mid 7/10
Knights of Sidonia progresses nicely early on, but eventually becomes riddled with deus ex machina. At the start, Knights of Sidonia stays refreshing by having this back-and-forth of humanity creating a new weapon and figuring out how to use it; and the gauna developing a new ability or form, and the humans having do figure out how to deal with it. Once the Gardes are fully tricked-out, though, it degenerates into "this mech is cooler and better" and "this monster is bigger and tougher." The series finds its footing again when it takes that formula to a ship vs ship scope, but these additions ... 
Apr 26, 2020
It started so good, I was really into the story and characters until the entire manga became two subplots: shipping and combat.
The artstyle is really unique, the scenery and the characters were so great drawn, the character design is a little confusing at the beginning, but after some chapters you get used to it. The jokes were really ok and the characters were interesting, until I got to the last arcs of the series... Beware I made a whole rant and it contains spoilers. ...
May 17, 2023
Nihei's works consistently fail to produce any interesting characterisation, or offer much of substance in terms of commentary, or really have any merit past their visuals.
I really did try to like this work, or at least finish it, but it was just not engaging, and there was nothing to suggest hope of it improving. More specifically to this work, pacing does not seem to be a concept -- it's like the reader has been forced to skip the first ten chapters of context, except all the time. Characters just show up whenever they please.. Why would anyone care about what they say or what happens ... 
Nov 30, 2023
This manga definitely belongs in the underappreciated category. While it got an anime, There's something about the manga's artwork that cannot be replicated in anime. Especially since the author of this is Nihei Tsutomu who is an accomplished mangaka most famously known for creating Blame!. My main reason for reading this was because Nihei's artwork left me dazzled in awe while I was reading Blame! So I endes up picking this and boy did it not disappoint at all.
Let's start with the story, Basically without spoiling much, Its about humanity living in space. Like a post apocalyptic setting which has been done so many times ... 
Feb 18, 2025
I'll be honest, man, I don't think the manga earned its ending.
You have the incredible world, the fascinating characters, their context, their dynamics, and whatever surrounds them. You add in that precious mix, an enemy, as enigmatic as it is terrifying. Creatures which are truly impossible to understand at the beginning, but they have certain aspects that make them so… weird to deal with. Gauna. They can mimic voices, human biology, even a strange attempt at communication. They, as well, could destroy all of humanity if deployed at the wrong time, and the wrong place. As the story went on, the focus on the ... 
May 4, 2019
Well, Sidonia no Kishi, to be honest, I do not like the genre "mecha", even though Tegen Toppa and Code Geass are anime that I love a lot, I'm a complicated guy. Anyway, the plot of the work is very interesting at the same time as it is something "common", the humanity that takes refuge in space for x reason, ends up finding something that wants to eliminate there is the reason for it and aims to come back to live on a planet. First of all, Sidonia is a rather interesting and "different" manga, * spoiler *, I say that it is different because
...
Dec 13, 2022
STORY: 5
With its post apocalyptic settings and humanity-transcending lifeforms Sidonia no Kishi gets immediately compared to Blame!, the most famous work of the author. Here we have a much simpler story and universe and, while the introductory chapters show a lot of potential, things become less interesting as the story progresses until an ending that many are upset about. Also progression is too long with the boring shonen rhythm of both heroes and enemies becoming gradually ridiculously stronger. This manga should have been much shorter! ART: 6 The art of Nihei is much cleaner here but still retains his bold style. It's enjoyable despite confusion during battles ... |
