Special thanks to Rjgman56 for english subbing this movie. Please support by watching the movie with the link provided in the comment section.

Story.
The story is pretty decent; however, for me, it felt nothing special other than the music. My favorite part of the movie would be the festival (ending scene).

Acting/ Cast.
I watched this movie because of Mackenyu. I first saw him in Chihayafuru live actions. It is nice to see him playing a different role. Mackenyu definitely fits the role of a lead singer in a band. If he quits acting, I would definitely support him in a music career.
I am so grateful that Kitamura Takumi is in this movie too. He's a singer, which makes the movie better.

Music.
Some parts of the movie, where Aki (Mackenyu) is singing looks like a music video with the flashbacks.
My favorite song would be Stand by Me.

Rewatch value.
It depends on the person. For me, I give it a 2.5 because I would rather rewatch some scenes than watch the whole movie again.