Go Back Couple - Season 1 Episode 4 Again, My Heart Beats First love is useless. What counts is your last love.
Overview: Jin Joo and Ban Do's argument is heard throughout the campus as it was broadcasted in the school radio show. The students of the school begin their search to find the married couple. Meanwhile, Nam Gil saves Jin Joo from getting hurt, and Ban Do goes on his first date with his first love, Seo Young.