Lets begin with what I said on the headline.
Don't get me wrong, a 2hours movie of this kind is still quite long, but...
..considering how rushed the content was with a bit too much plotholes, it should have been longer or even divided in 2 movies. The holes were a bit too big to pass.

You dont need to go line by line from the original story but there are certain keynotes that by taking out, cuts the overall experience.
I think even if I were to watch this without have read the manga or watched the anime, Id still feel parts were missing.

It began well up to 30minutes in, then the rush began and it went downhill.

The story is still beautiful but I wished the actress played Myio even more humble and puny.
In the alternative media I kept the feeling MUST PROTECT HER BY ALL MEANS but in the movie I really didnt felt as moved. The maids had a quite impact in the story but the were cut off rather short because, again, there was no room for anything else.
This is what lowers the score.

Fx wise I was happy. It was flashy and yet not as much to ruin it. I find it was kinda subtle and fitting for film and the music felt just right.

All in all, it was an adaptation that went its own path. I missed a lot of things from the story.
I recommend watching the anime (on Netflix and has finished airing) or reading the manga (that is not finished).

I still recommend this but Id say, watch the movie first then the other media otherwise you might be as disappointed as I was.