Kyoukai Senjou no Horizon is a unique anime in its own right, mixing comedy, action and romance into something that is different from those 3 genres. You might feel a little confused at everything that is going on but for those who think deeply into the story’s plot, it will be a great and unpredictable ride.
The story starts in the future, where humans are living in a devastated Earth after fighting and losing in space. Japan is the only place that is inhabitable for humans, and they promptly split up into states called the Harmonic Divine States where they would use the Testament, a book that records humans past history to re-enact. However, to do this, Japanese are forced out of their homeland, where they live in a city ship called the Musashi and that is where the story begins with the protagonist, Tori Aoi, who wishes to take back his country.
Horizon possesses a wide ensemble of characters, with their personalities often polarizing from each other. For example, Tori Aoi, the main character, plays a perverted fool where his hands often touch where they are not supposed to by luck, but in later episodes, we find out he is actually very resourceful when dealt with difficult situations. More likeable characters fill the cast, with Sunrise being concise in each of their character designs and graphical representations. Music was also well done, some of them are close to stunning and with the right track at the right time, and it becomes an integral part of the anime itself.
However, some of you will find the story very slow in the beginning where it will take a bit for the complicated story to fully develop. At that point, you will be able to fully appreciate what Horizon is truly about.