Sidonia no Kishi: Daikyuu Wakusei Seneki

Both series are space mecha anime. Both have very talented pilots who are the primary resource utilized by commanding forces. Both have very similar music themes played throughout the series. 

Darling in the Franxx, an extremely popular mecha series release recently has taken the community by storm with the surprising compatible duo Hiro and Zero Two. Knights of Sidonia S2, the sequel to the original Knights of Sidonia story line; a fairly popular mecha series released in 2014 that has been absorbed by the community maintaining the power duo Tsugumi and Tanikaze. Both series are extremely similar due to their premise and character palette, I assume everyone is familiar with the premise of Darling in the Franxx so I will describe the similarities it shares with Knights of Sidonia with as few spoilers as possible. Firstly, in S2 of Knights of Sidonia we are introduced to a Gauna/human chimera which replicates the humanoid composition of Sidonia's knights. The MC, Tanikaze grows to a liking with the Chimera which has human awareness; they are basically a power duo on the battlefield when attacking hostile Gauna (alien species) This is the biggest similarity between both series, they're essentially compatible characters with Zero Two and Hiro, we know from the series Darling in the Franxx that Zero Two is technically not human and thus seems like a direct mirror to the Chimera Tsugumi. Secondly, in Darling in the Franxx, there is a control hierarchy or connection between the youth characters and higher in command known as adults, papas or mamas. In Knights of Sidonia S2, there is a similar chain of command called the council, which is essentially much older and wiser humans that have undergone a surgery that allows them to live near immortal lives and maintain their physical youth features. In both series, these higher in command control what is the best option for their survival as well as the society that live under them and as such, they decide many important decisions aboard their ships/ in their domes. Thirdly, They both are set in a post apocalyptic settings; Darling in the Franxx is set on a planet (which may or may not be Earth) whereas Knights of Sidonia S2 is set on a large meteorite in Space. Although they seem to occur in drastic settings, both societies live within a man made shelter from the outside world in order to protect and preserve humanity. Lastly, in both series they tend to have a common enemy: In Darling in the Franxx, the enemy that feeds on humanity and leads in destruction is a land monster known as Klaxosaur whereas similarly, in Knights of Sidonia S2 the monsters that are a menace to mankind are known as Gauna. In Darling in the Franxx, Zero Two, the female MC has a portion of Klaxosaur DNA and part human (I'd assume considering she maintains a human figure); Similarly to Darling in the Franx, Knights of Sidonia's main Mecha/female characters is a mix of Gauna DNA and human which is why she is referred to as a chimera in the series. After watching a bit of Knights of Sidonia, it becomes much more apparent that there is much more similar chemistry shared with Darling in the Franxx. I assume that is because the general premise is intriguing/entertaining to watch; I enjoy both series so it's no surprise that I'm submitting this recommendation for both. Thanks for reading!  read more 

Similarities - Humanity fighting against evolving monsters/Virus - both are CGI but Tunshi is more detailed and has better animation rigging - both are OPMC or Zero to hero OPMC - both fight to protect their lover Differences - Tunshi is set on 'Earth-like' planet VS. Sidonia is set on a Ship in space - Tunshi revolves around one character VS. Sidonia revolves around a character and his team/lover - Tunshi is more about a single person's strength VS. Sidonia is about fighting using Mecha strength - Tunshi is Chinese Donghua VS. Sidionia is Japanese Anime 

Both shows are sequels to anime animated by Polygon Pictures. Both shows have immortal characters in them and social commentary. Angela performed the opening for both shows. 

Both shows are sequels to shows about giant man eating creatures who have almost devoured all of humanity. More hybrids of people who are part enemy and part human are introduced.  

Revolving around a future dystopia society where humanity battles giant, ominous space monsters using mecha, these titles are pretty joined at the hip. Each treating the space monsters as a mysterious entity. The core premise is the same, but what really sells that comparison is that they both become a slice-of-life towards the middle portion of their runtime (Sidonia more harem than anything), despite the inherent intrigue that could have been achieved by exploring the alien threat instead. And similarly, towards the 3rd act, they reconnected back to the core conflict that was established in the beginning (in this case, a fight against monsters). 

In season 2 of Knights of Sidonia, alien parasites that try to take over human brains are introduced, they reminded me a lot of the parasites from Parasyte. The main threat in each series are shape shifting aliens who eat humans. 

Similarities: -Both anime occurs in a distant future dystopian societies. Both societes look pretty weird for 20-21th century humans. -Both anime presents a high level of sci-fi element and "the details", and in both humanity are endangered by extinction. -Both have specific, non-standard artwork. Differences: -Sidonia no Kishi occurs in deepspace, while Shinsekai Yori occurs on Earth in distant future. -Sidonia no Kishi have male lead who is clearly "The Main Protagonist"(Tanikaze), while Shinsekai Yori MC's have no clear lead, both Saki and Satoru have equal level personalities. -Sidonia no Kishi features more battle scenes, while Shinsekai Yori have much less of it.