Goodbye Day(2007)

Woo Min is a junior in his high school and his father is the president of a large enterprise and lives with his young mother. Though he is rich and talented, he is a humble and ordinary boy who can be found everywhere. He found a true friend whom he can share everything with, Ho Jin. However, their pure friendship is obstructed by Ho Jin's mother since she is not happy with Ho Jin, being obsessed by the fact Woo Min will take over the seat of his father. Ho Jin happened to murder his biological father who had consistently abused her mother, but her mother voluntarily accused herself as the criminal for her son and is serving her sentence. To Ho Jin, Woo Min was like an oasis in the desert, and they became best friends. One day, they planned to secretly leave for New York.