STORY: This is like a mini/side/what-if story for KEY characters. It puts the characters in the same school and we see them interact with each other, mostly, with comedic results. If you need an idea, it reminds me of Isekai Quartet. ART: Their art is drawn simply, and it works really well for this kind of anime. SOUND: They use sounds from the VNs/anime they made. And KEY's music is something that makes their game very memorable. CHARACTER:Their personalities are more/less the same as their original versions but with added comedy.

ENJOYMENT:
Key's works are something that I enjoy, so my enjoyment will be a bit biased. Part of the enjoyment came from seeing these familiar characters with the added bonus of seeing them interact with each other - something you won't see on their source VNs/anime. But even if you're not biased, I think you will enjoy the comedy, even for a little.

OVERALL:
I am thankful this was made. It might have been tailored for fans, but it won't hurt to try.