If you're into BL's in general, then the lack of any actual romance/love in this movie will be the biggest let down for you. It would have made the happier points in the movie more happy and it would have made the sad points hit harder and just be an overall more emotional experience as a film. The OST to this soundtrack is pretty good though and goes very well with those dreamy, calm scenes of the bright, open sky. The acting between the leads was shaky in some scenes, but they handle themselves well for the most part. Story development is by far the biggest drawback for me.