Minor spoilers ahead
Story:
So our story starts with a very interesting set-up, a being from another dimension - the anisotropic - comes to Earth and wants to advance humanity and help them find the right answer.
This leads to a couple of interesting questions:
Is it a good thing for humanity to advance through the help of outside forces?
Will humanity be able to handle this much advancement at once?
What are the consequences for the world?
Who is this anisotropic being and why does he do what he does?
And what is the right answer?
These questions are the driving forces behind the story of Kado - the right answer and it's up to humanity to find out the right answer to these.
First of all the premise was very interesting and for most of the episodes the execution was great.
The problem with this story was the twist in its final episodes, while I liked the reveal of what the anisotropic being is and why he does things, it took this show in a very different direction than I thought it would go. It started of with a lot of these deeper, philosophic questions about humanity and ends with well... something quite different.
The final episode was horribly rushed and the ending was very unsatisfying. I don't want to give it away but the way the Main Characters story finished was just very anticlimactic.
Art:
This anime uses a lot of CG, especially for its characters. If you're really bothered by this then it might bother you in this show as well.
For me however it worked very well, the CGI was obvious but it was executed in a way that it didn't feel out of place at all. If this is the future of CGI in anime then I'm up for it.
There were a lot of beautiful wide shots of Kado and its surroundings in this show, especiall the proportions of Kado in comparison with other objects was handled exceptionally. It really felt huge. The inside of Kado was also designed beautifully and was one of the highlights of the show from an artistic point of view.
The character designs weren't anything that special, but I think that was the point, it was a show that was set in reality so everybody looks like an ordinary person, except for the anisotropic being whose design I really enjoyed.
Sound:
The soundtrack of Seikaisuru Kado was a highlight of this show. The opening and also the ending were just awesome. Especially the opening, I never skipped this one. Though in general the OST was quite good. It added a lot to the series and made a lot of moments feel bigger.
Characters:
Shindou, Koujiro
Shindou is the protagonist of Kado, he's a negotiator for the Japanese Government and the person who also negotiates with the anisotropic being.
He's a very likeable and interesting guy, worthy of being a protagonist. His interactions with his co-worker Hanamori would've been enough for me to watch a slice-of-life show with them just doing their negotiations.
He goes through some interesting character development over the course of this show, I just wish the end of his story arc wouldn't have been so anti-climactic.
Yaha-kui zaShunina
The anisotropic being who wants to advance humanity. His deisgn was great and I really liked the concepts of the anisotropic he brought to this world. He was a very interesting and mysterious character right until the final episodes. It was interesting to see him change due to the influence humanity had on him.
Tsukai, Saraka
The female lead of this show. At first she felt a little out of place in this show. Her typical anime antics just didn't fit with the otherwise serious world of Seikaisuru Kado. But she was a nice and sweet girl and she grew on me. It was interesting to see her become so important later on.
Enjoyment:
Overall I'm a bit disappointed with this show. I really enjoyed everything until the twist and was ready to rate this 9/10. But the twist of this show first drove it into a direction that was only okay instead of great and then the final episode happened and I won't give away the ending but it was a huge letdown for me and some of it felt like an asspull to me.
I'd still recommend this show for it's great 10 episodes!