Who Is Haoran?

A group of small-town boys has prepared to beat up on this boy named Haoran for a long while. Belligerent and energetic. They tried every trick to catch him in vain including hunting him in the classroom and ambushing him on his way home. These little rebels fooled around each day, smoking, running away from their homes, and chasing after an impossible target. But who is this mysterious Haoran?