No Matter What It Takes - S1.E4

Ji Min learns that it was Se Mi that Woo Joo ran away from, and that Eun Su actually saved Woo Joo’s life. He apologizes to Eun Su and treats her to a meal with Woo Joo. When Eun Su hears that Woo Joo doesn’t have a mother, she forgets about leaving and decides to stay to become Woo Joo’s mom.