tl;dr: Very pretty animations with a mediocre plot and terribly written characters.
Contains spoilers about the movie.
Story: 5
The story is pretty generic and cliche. A girl is able to transform into a cat because of a mask from a fat cat and finds the love of her life. She tries her best to be cheerful around him because he seems to be going through some hardships; however, the guy takes it for granted and tries to ignore her for the majority of the story.
After watching the first 30 minutes, you can easily predict where the story is going.
Art: 7
It was nothing special, I would say it's pretty unique.
Sound: 7
Nothing special, there was a good song in the movie.
Characters: 3
Almost every character in this movie was terrible and unrealistic.
The main character Miyo is probably the biggest simp ever. The things she does for a guy that tries his best to ignore her. She decides to jump off a bridge of the school headfirst into a tree to tell the 2 bullies that assumed Hinode was cheating on exams, because he was suddenly getting better grades. Later on, she decides to transform into a cat after deciding he'll probably like her more as a cat without ever considering the consequences (other friend that loves her and even cried when Hinode rejects her and that her family will probably miss her).
Hinode was the biggest asshole ever. Just because he wanted to be a tsundere, and ignore all the advances of the girl. However, when he's with Taro (cat) he tells how much he loves the cat and that's his "real" emotions. After rejecting Miyo and her feelings she spent all night writing in a letter, in just 1 week he suddenly changes his mind and decides he loves her.
Enjoyment: 5
Aside from the unique artstyle and easy to understand story, there was not much I enjoyed about the movie.
Overall: 5
You may enjoy it if you enjoy a simple and cute story, however I did not. There are probably better romance movies to watch with a supernatural theme.