Humanity has declined, fairies is the new human.

Based on the novel series of the same name, the anime series is fairly faithful to the original work, except the broadcast order was completely random -- starting in first half of volume 4 and ending with first half of volume 5. There are still many good arcs in the novel series that are unused, perhaps a second season? From what the anime did covered, it did a very good job in delivering the original story. This series is definitely worth watching just for the curious and prophetic storyline.

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