Let me just put a disclaimer out there and say that I didn't watch this movie with subs. I probably only understood about 30-40% of the dialogue. But afterwards, I went and watched most of the anime to fill in what I missed. The movie is pretty mediocre and left a lot to be desired.

STORY:
This was a pretty generic story. Socially awkward, friendless girl meets pretty boy Mr Popular. The story goes through all of the cliches a shojo manga would encounter.

ACTING/CAST:
The acting was decent to good. I think Sota Fukushi did a good job in his role, as well as supporting cast. I can't say too fondly of Haruna Kawaguchi though. I don't know if it was just how the writers wrote Mei to be, but I just felt like she was incredibly awkward throughout the movie. There was no life in her and very little growth throughout the movie. Mei was not an interesting character at all.
Also, as much as the lead actors tried, there was ZERO chemistry. Kisses are usually awkward in Japanese dramas and movies, but this one was ESPECIALLY awkward. They kissed SO MANY TIMES, but they were so awkward that it made me cringe each and every time. Plus, Mei trying to stop Yamato mid-kiss by pushing him/his arm away was just so unconvincing.

MUSIC:
I liked the music, but it wasn't mind-blowing. I liked the nice instrumentals in the background, especially the tracks with the piano. It was calming and set the scene appropriately.