I will try and keep this spoiler-free
Story-7
the writers had some great ideas and at times the story is very enthralling but the overarching story is very very messy. It was like the authors had no foresight when writing this anime, they would kill off some Characters and then try to force them back in because they realize the story would not really work without them instead of trying to work out something new. While the Characters develop a lot throughout the story the story itself feels like it was going in circles, the authors would spend just as much time backtracking then actually progressing the story. Despite all these ridicules, there are some very very unique ideas and great plot points hidden in the mess, and if you take each section of the story in a vacuum they are actually really good.
this show might have done better as a series of 6ish episode shorts than a full series.
Art-7
there is not much to say about the art, throughout the show, it is pretty mediocre but there are some keyframes and scenes that have very good animation and art, which moves up the overall score.
Sound-8
the soundtrack is very very good however it is a bit repetitive it seems they only got like 4 great songs they just play over and over again.
Character-10
This is where the show really shines, I am very limited in what I can say due to spoilers, but what I can say there is not a dull Character throughout the show, even the meaningless side Characters that you only see for like 10 minutes have amazing personality and subtlety. The side Character are really the blood that makes this show work, every single Character has unique motivations and personalities, This makes the world really seem alive and make every Character seem like the have a life outside what is shown in the story, the side Characters also have these own arcs and you can see them change over time to an extent I have rarely seen in any other anime. This also holds up for the main Characters and their arcs, and without spoiling anything I will leave it at that.
Enjoyment-9
Despite this show's flaws I really did enjoy it, the Characters and their interaction made me what episode after episode. In one sitting I could not watch less than 3 episodes just due to the enthralling nature of the Characters and at times the story.
Overall-8
This was very difficult for me to rate because early on I thought this show would be a 9 or a 10 but the flaws just kept piling up and the overarching story just got messier and messier, but despite all these things I really did enjoy the Characters and the anime as a whole, I would recommend you watch it especially if you like interesting and unique Characters