I knew this movie is based on a novel, which I haven't read yet but might do in the future. Instead, I read the manga, and I am not sure if that is the reason why I wasn't as invested in the movie as I thought I would be.
I loved the manga..I bawled my eyes out. However, I didn't feel the same towards the movie.. it brought tears to my eyes but didn't have the same impact on me.

I would say it is a calm and slow movie. Some might find it boring. But that's what I love about Japanese movies. It is emotional and heartbreaking. You will smile and feel emotions while watching it. So I still recommend watching it.

Acting wise, I think my favorite was Oguri Shun, and I am not surprised because he is one of my favorite actors. Oh man.. his acting makes you feel things and in seconds he makes you cry. I specially liked the last scene in the movie because of how he brought it to life. He is always amazing!