Fashion King (2014)

The main character has always been bullied by his classmates until one day his family moves. At the new school, he can start over and ends up especially fond of fashion. He started learning about fashion from a guy who sells fake clothing brands after accidentally buying one himself. As his popularity grows due to his fashion, the fashion king of the school takes notice. Throughout the movie, they go head to head as the underdog rises to dethrone the spoiled rich kid.