Before playing, know that this is a horror game with implied murders.
Anyway:
***SPOILERS HERE.***
*It's supposed to be a horror story, but to me it falls flat - some things don't quite sell the story well. Like: a scream when sus!Mysti is with us... just who is getting attacked there it doesn't make sense, we don't even find them - or also, why does sus!Mysti bother to make a graveyard with proper burials, does that mean sus!Mysti doesn't actually cook them or just pays respect to her victims for some reason?? - or also, in the Interrogation ending, how come the "police" miss the basement entirely, we just came out of it and there's a graveyard there! Also why does sus!Mysti bother bringing her victim in the basement when there's no good ingredient and when there's even a wide open exit - and why does sus!Mysti even send Kyouko in the basement if the one place she didn't want us to see is easily accessible there?
*The shift of playable from Mystia to Kyouko is... weird. In the sense that since we haven't done anything relevant as Mystia, the shift of the playable has no effect on the player. This "gimmick" is a bit of a waste/missed opportunity.
*I liked the environmental storytelling though. On the first screen you can tell something is off already by examining the props around. And in the "no-no side" of the basement there are various flavor texts that describe the poor condition of the place and poor preservation of food and items. The bird-related flavor texts were particularly chilling. And also how the "buried" bodies are characters who all appear in Touhou Mystia's Izakaya.
***SPOILERS END HERE.***
*TLDR: this skincrawler(?) horror story throws tropes and story elements at random, decreasing the believability of the story - but I guess that's what having 3 days allowed. It does have a couple clever things though.