Once Again - Season 1 Episode 72
Overview: Cho Yeon returns to the market looking for her family picture but doesn't find it. Instead, she bumps into Seo Jin, who falls and scrapes her knee. Cho Yeon wraps her wound with a handkerchief she kept since she was young. Meanwhile, Hyo Sin tells Ga Hee he has feelings for her, and Ok Boon leaves the house.