Since there doesn’t seem to be a need for a separate thread, I’ll just leave my impression of マウス here. 
The story develops very slowly, but in the end I can say it became my favorite of her works I’ve read so far!
It’s a story of friendship and acceptance and animal metaphors. 
Speaking of animal metaphors; I loved how Murata tied them into the story and how everything came together in the end.
I wrote a more complete review on natively, which can be found here: