This show was buried in Netflix recommendations. I wished I had seen it sooner because this was a pleasant surprise. The world building is top tier and the clash between the main characters' civilization and their oppressive villains is incredibly engaging.
This show is similar to other shows and movies where you have a civilization that knows nothing of the outside world and then are brutally brought down to earth and forced to not only acknowledge the outside world but also combat those who wish to harm them. However, the execution of this story is striking and original; I was never thinking of a similar show during the entire runtime.
Right out of the gate, the civilization is pushed to their emotional limits after experiencing tragedy. Seeing them take a stand was so powerful and emotionally satisfying. The action did not shy away from the psychological brutality of the violence and sense of loss. The civilization acts with their hearts on their sleeve which in turn makes the audience emotionally invested in the characters. No main character stands out, rather the combined social structure of the civilization is what draws the audience's investment. At the same time, there is a long mystery associated with their civilization and their past that comes into play as the story plays out which adds an extra layer of interest.
The animation is unique with backgrounds that look like water colored still images. The facial expressions and outline of the characters is intricate to make them stand out in the crowds of their civilization. The buildings, environment, and magic effects are gorgeous to look at.
Unfortunately, it looks like Netflix did not continue the show. Its a shame since there is 5x more material afterwords in the manga. If you did like this show, I highly recommend continuing with the manga. It's worth your time.
