(spoiler free review)
It was a good movie. They took an amazing manga, took important scenes here and there, and made a movie. The story is good, nothing to say. The directing is intereting, and suits the atmosphere of the script, and the characters.

The casting is on point, and the actors are AMAZING. For a first role, Hirate Yurina is crazy good, but the other high-schoolers didn't lose anyway, so I was really surprised !
Kitamura Yugira (the TV-writer), Nomaguchi Tohru (the photographer), Yuya Yagira & Oguri Shun were really good.
Especially Kitamura, & Oguri. I was really enjoying their performences. Of course, Yagira is always perfect, but those two, their characters were especially interesting.

The only disapointing point is Kitagawa Keiko. I was really disapointed by her performance. I kow there's a few people that don't really like her acting, but I'm not one of those, so I was surprised, and really disapointed. She was bland, annoying, boring.
I know her character isn't the most interesting, so it's difficult. But it's a problem as an actor if you don't have half the screen presence of actors that appears for a few minutes in the movie when you're one of the main characters, or of actors that have less than a year of acting and you have 15 years of experience.

But let's be honest : they should have made a drama, not a movie. The story is rushed, a lot of important characters were just erased, and they changed the some of the relationships between the main characters .
That's comprehensible, because they didn't have time, but... disapointing anyway, and it wouldn't have happened if they had made a drama.

Finally, I'll just end with : if you liked this movie even a little, please read the manga, you won't be disapointed. Like a lot of people say in this movie "it's a masterpiece"