Su Ji and U Ri - Season 1 Episode 31
Overview: Su Ji collapses in Sun Young's arms, and Sun Young takes her to the emergency room. Hyun Sung and Su Ji's family head over to the hospital as soon as they hear the news. U Ri visits her later on, but Hyun Sung warns him not to cross the line and sends him away. The next day, Sun Young stops by Su Ji's ward to get her food.