I think this film is very underrated because of the plots subtlety but it is a wonderful film. I like that the producers dont really spoonfeed you explanations so you have to pay attention and piece together your own conclusion. You should watch it twice It is definitely a comingofage film I think his friends as one dimensional as they are served to show his immaturity and how he slowly changed throughout the film. At the start of the film he pretty much liked her because she was pretty. However with more decisions he made through the film he developed from an ignorant character to a passive observer to finally someone who could think and act for themselves. I like the use of fireworks. Whenever I think of fireworks I think of a memorable point in life like graduation. Fireworks represented the end of that chapter in his life. When he saw the fireworks did he regret it or did he appreciate all the memories that lead up to this moment? Many of the if I had done this thoughts the main character had was sparked after seeing the end. Theory: This movie isnt without flaws but I enjoyed putting together its creative storytelling and it has a good message. Face the world boldly. You dont want to wait until after you see the end to realize that you could have done it differently but even if you do end up at that point its not too late to change from that point.