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Firstly, it looks amazing, I'd say it's on par with ufotable even. Great colors, lighting, smooth animation, as if it's 60fps, not 24. CGI which was used in some moments was properly touched up (I assume frame by frame) to look absolutely natural, as if it's drawn (it's not, good eye can still see that it's different).
And surprisingly well done in terms of the story as well. It's not "overly bright and hopeful". There is a very clear and quite natural challenge being presented, which is nice. And I was not expecting the explanation behind that "glow" the manager sees. I was thinking of something the complete opposite.
This may be interesting.