So many things to like......

For me, this movie was great because you see so much of the world through the distorted eyes of the inmates in the hospital......without judgement. And the character of Rain is a kind of hero, in that he tries everything to help by getting inside the minds of others, even if that mind is hard to understand.
So one of the messages for me is about the nature of help.....so often we help someone, but it's in a way that is easy or convenient for us. But real help is much harder to do, you actually have to know someone well and work out what they actually need.