Mackerel Run (2007)

Cha Gong-chan was able to enter the top private high school in the affluent Gangnam District, Myoung-mun High, because of his soccer skills. But when he quits the sport, he finds himself an outcast and starts cutting class. One day, a beautiful new girl transfers to the school, and when she walks into his class, Gong-chan falls for her instantly. He is finally enthusiastic about going to school, but the school informs him that he will be expelled if he misses one more day. Gong-chan vows that he won't give up on either his school life or his love.