As a fan of Kyungsoo's work, I tried not to spoil myself and went in blind, barely reading the synopsis, so I could be surprised. I had watched a bunch of the cast's enterviews about the movie when it came out, so I was expecting a summer story about dreams and friendship. What I got was a painful ride about life, feelings and growing up. I cried a lot. It hurt. The feelings are so intense, there's no way it can be anything but a 10. The story itself isn't new, it holds that feeling of movies about youth that were a lot on TV on the afternoons when I was a kid. But, even if the story is a cliche, it was so well done and delivered that it feels kind of new. The acting is simply superb. You laugh when they do, and you dehidrate yourself to death when they cry. The young actors showed such strong emotions you can't help but get choked up at times. It's like you are member of the group as well. Kim So Hyun and Kyungsoo were obviously the main ones, and it's easier to bond with them, since we see things through their eyes. But the other young actors did such a good job, you can't help but relate and feel whatever they're feeling too. The OST was good and fit well in the story. Specially because the movie plays itself around a radio show, if the music was messy it certainly would not have had the same impact. I wouldn't watch it again, simply because the movie was about the plot twist, at least for me. Now that I know what happens, I don't want to inflict that pain upon me again. But if I do need to cry, this a go-to, at any time.