This is for comedy, nothing more. If you enjoy the actual series and its characters you will enjoy this.
It's incredibly hard to make a lengthy review of this considering it is just a short at the beginning of each episode, so my review scores are based solely on personal enjoyment and some bias.
Shiki is in the theater with you, please be respectful for safety purposes!
Just look at it, it's not the art you see in the actual series and that's intentional.
Some meowing; I'm serious.
They add on as they're introduced in the main show.
I laughed a few times, I believe.