Well, I really love the ambiance of the film. I mean, I've always liked how Japanese BLs set a tone/ambiance throughout their series!
I like how pure, fun, and innocent their characters are. I enjoyed the parts where Sakura plays the piano because it makes me feel like I really want to fall in love. However, I was wondering if they really played in the school festival. I was waiting for that moment or perhaps I might have missed it. I was really looking forward to hearing Sakura playing piano while Yuma is singing. I really like their friendship, and I can understand that they might be confused about their feelings at first since they are at the stage of discovery. Aside from the kissing, I am kind of disappointed since I feel like nothing has changed between them. I feel like there is no progression aside from their kiss. Yeah, they started to show that they care for each other, but I feel like it could have developed into something more. I am not talking about wanting them to make out or have intercourse, but I am talking about how they could have shown us more of their admiration towards each other.

Also, I kind of wished that they showed us what happen after high school since I am really curious about the path they decided to take given the fact that one of them didn't write anything on the paper [correct me if I am wrong].
In the last part, I was kind of wondering why Sakura acts like that. Is it all just a dream? an imagination? Did he ever confess in the first place?
This series is simple and pure, but I feel like it could have been better if it is longer and showed a progression of how they deal with their life throughout their youth as best friends/lovers.