The other prominent element to Sidonia that sticks out is its high quality visuals. Milking use of 3DCG animation, the use of the technology helps to give more realistic detail to its character and scenery designs with subdued color tones to compliment the title's serious storytelling. Movement is very fluid throughout the series, best highlighted in showing off the realistic effects that gravity has on the human pilots and the intense action scenes that take place between the Sidonia mecha and the alien threat they are dealing with. The only setbacks with the use of 3DCG with Sidonia are that its use give character designs a somewhat plastic feel that can be rather noticeable in some camera angles and facial designs are poorly animated with limited range of expression.
When it comes to the story and characters of Knights of Sidonia as a whole, the series is a bit on the generic side in these areas. Sidonia mostly relies on story elements and character archetypes typical of sci-fi titles to carry along the series and it doesn't really offer anything new for the genre that I might have already seen before. The gifted teenage pilot and uptight, jealous rival seen in the form of Nagate and Norio's chemistry has been a recurring character dynamic of past titles and this dynamic is rather shallow since both characters don't get much in the way of dimension or depth. This issue also applies to the majority of other characters seen throughout the series as they mostly exist to fill specific tropes found in sci-fi anime, from the doomed love interest (which the Gundam franchise milked enough for many of its titles) to the secret group of superiors having ulterior motives hidden from the majority of those within their ranks. The whole "post-apocalyptic future where humanity struggles against an alien threat" premise is also nothing new and Sidonia offers nothing new to let it stick out from other titles milking similar plots.
There were also some noticeable issues I took notice of with the anime's plotting. Due to the limited depth given to much of the cast, the character deaths seen lack any impact and Sidonia makes a half-assed attempt to force viewers into caring for them by having characters aboard the Sidonia bond with Nagate on the episode they die in. One particular incident that happens during the middle of the series is a bit dumbfounding in how the perpetrator behind it can get off scot-free without any repercussions nor suspicion of it thoroughly investigated by the military, leading to a pointless case where Nagate is reduced to a depressed state and lashed out against by the Sidonia populace. I also have to wonder where in a series that is as meticulously realistic with its sci-fi depiction as Sidonia is, why it has a talking bear with a robotic arm in the form of Lala Hiyama as there is nothing revealed over why she appears as she is while everyone else aboard the Sidonia is human in appearance. In addition, the series ends inconclusively as there are lingering mysteries unresolved with several plot elements within Sidonia.
While Sidonia is pleasing enough with its animation and implementation of realistic elements for its sci-fi, the series doesn't offer much new to the sci-fi and mecha genres that have been seen from similar titles of its ilk, which made it hard for me to care much for the story and characters it had to offer up. Action and sci-fi fans may enjoy this if they overlook this problem. But Sidonia had me feeling like I seen the stuff it offered up too many times at this point in my 13 years of anime fandom.
