Cheer Up - Season 1 Episode 15 Hae-yi’s Tragedy
Overview: Despite the happiness that Hae-yi is having with Jung-woo, she asks him to break up with her. It is because Chun-yang is diagnosed with breast cancer. In order to earn money for surgery, Hae-yi must work more jobs and cannot make time for Jung-woo. However, Jung-woo does not give up on her and neither does her friends on the cheering squad.