I already watched the anime and read the manga and, although they are both well made, I didn't like the characters and the story itself. The writing and art is good, but it's basically about an abusive relationship and being happy about it (sorry to the people who love, I find no excuses for Kyouya's behavior).

Why did I see the movie? One reason: Yamazaki Kento. But, although he's still very handsome being blonde (and not a lot of Japanese guys can pull that off), I don't think he fits the role. Maybe because of his baby face, but his eyes weren't as cold and dark as the manga/anime character. Yamakento has that ideal beauty, and Kyouya has a unique trace in the manga/anime, so I would've liked if it was someone different.

FINALLY ABOUT THE MOVIE ITSELF: I found Kyouya a lot more kind and outspoken about his feelings here (this I actually liked), and his story was not developed AT ALL (he just seemed an ass for no reason, and those who know the story know that at least he had motives for being like that). I talked a lot about the ML, but the FL was different as well. She was less irritating but also less bright and excited, I guess? And that made her and the ML to not match each other, in my opinion. It was just awkward.

Conclusion: the movie made everything less abusive, but the actors and the lack of Kyouya's background story had it go downhill.