Sidonia no Kishi: Daikyuu Wakusei Seneki

Knights of Sidonia: Battle for Planet Nine

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Alternative Titles

Synonyms: Knights of Sidonia: War of the Ninth Planet, Sidonia no Kishi: Dai-kyuu Wakusei Seneki
Japanese: シドニアの騎士 第九惑星戦役
English: Knights of Sidonia: Battle for Planet Nine
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Type: TV
Episodes: 12
Status: Finished Airing
Aired: Apr 11, 2015 to Jun 27, 2015
Premiered: Spring 2015
Broadcast: Saturdays at 01:55 (JST)
Studios: Polygon Pictures
Source: Manga
Genres: ActionAction, Sci-FiSci-Fi
Themes: MechaMecha, SpaceSpace
Demographic: SeinenSeinen
Duration: 24 min. per ep.
Rating: R - 17+ (violence & profanity)


Score: 7.721 (scored by 6314463,144 users)
1 indicates a weighted score.
Ranked: #11332
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #1800
Members: 117,771
Favorites: 347

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Ranked #1133Popularity #1800Members 117,771
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Episodes: /12


After barely escaping a collision with a gigantic Gauna at the cost of many human lives, Kobayashi—the captain of the spaceship Sidonia—is prompted to change her political paradigm. Once she seizes full power, Kobayashi aims to eradicate the Gaunas from the Lem system where former Sidonians have recently established a colony. Her ambition is justified by two breakthroughs: the development of highly effective, long-range anti-Gauna weapons, and the creation of Tsumugi Shiraui—the first human-Gauna chimera possessing great destructive power.

Facing hostility toward chimeras and her uncertain large-scale military expedition, Kobayashi enlists the help of the new elite pilot Nagate Tanikaze. Due to his personal experiences with Shizuka Hoshijiro and Benisuzume's placenta, Tanikaze soon develops a close bond with Tsumugi. As the final battle against humanity's most formidable opponent approaches, Tanikaze tries to enjoy the last days of peace with his friend Izana Shinatose—all while Kobayashi secretly pursues the development of an experimental weapon that could very well lead to the complete destruction of Sidonia.

[Written by MAL Rewrite]


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Episode Videos

Related Anime

Characters & Voice Actors


Iwanami, Yoshikazu
Sound Director
Andou, Hiroaki
Episode Director, Storyboard, Assistant Director


Opening Theme

Apple Music
Amazon Music
Youtube Music
"Kishi Koushinkyoku (騎士行進曲)" by angela

Ending Theme

1: "Ichizu no Hikari (一筋の光明)" by Customi Z (advance screening)
2: "Requiem (鎮魂歌 -レクイエム-)" by Customi Z (eps 1-11)
3: "Sidonia (シドニア)" by angela (eps 12)


Jan 13, 2022
Short Review: minor spoilers regarding characters

After the excitement of Season 1, I immediately went on to watch Season 2. Alas, it is not quite the hardcore sci-fi war epic Season 1 promised to be. Season 2 is 50% bizarre alien dating simulator, 30% shonen action fantasy and 20% futuristic dystopian drama. It is a significant step down from S1 for me. Though it may work better for some (as the rating on this site shows, that S2 got overall higher score than S1).

Like I said in the review of S1, there is a special charm to how the original author/mangaka Nihei handles sci-fi details ...
Oct 11, 2020
Let me start off by saying this show definitely wasn't what I expected. It excelled in areas I didn't expect and it fell flat in others where I wish it wasn't the case. Let's break it down-

The story in the first season was much more intriguing and mysterious. There was so much going on and I really liked how things were not spoon fed to the viewer. I will admit--I thought two of the main girls were the same person until about episode 5. Aside from all the detours such as clumsily written cliche dialogue and trying to hook up with the main character, Sedonia ...
May 7, 2018
Mixed Feelings
I loved the first season but this season was disappointing. The first season was a thrilling space epic with growing undertones of dystopia as you learn more about how the society and government works. It was also a coming of age story and all around solid anime. The second season delves heavily into some strange love triangle/slice of life story.

It was really a genre switch I wasn't expecting -- it tilts more towards the 'slice of life' and away from the horrifying space epic side of things that I loved so much about the first season. If the first season never happened, maybe I'd view ...

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