Tiger & Wolf(2013)

Guy is a geek who always gets pushed around. He has a crush on Nana, a popular girl who's also the object of desire of Trai, the college's chief bully. When Trai finds out that Guy is also in love with the girl of his dreams, he reveals himself as a wolf and hurts his love rival. To fight back, Guy enlists the help of a mysterious boy named Zen.