Kimssi pyoryugi aka Castaway on the Moon (2009)

This is another interesting gem from South Korea. Kim is a young man who decides to commit suicide falling from a bridge with unsuccessful results. He lands on a desert island instead, in the middle of the dirty river crossing his town and tries to communicate with the rest of the world. Soon he gives it up and realizes that he prefers to live there isolated and calm. But even on this small paradise if you can say this, there is someone who keeps an eye for him. Another isolated soul totally different that will start contact with him through glass bottles and messages. Will they meet someday? A stunning comedy that begins with a real sense of humor and gives up with dramatic parts of people getting together.