In Episode 2 Kang Yoo Jung never realized immediately what had happened the night they were in an accident. When she realized that there was a possibility that they will be involved she on her own decision confessed that she drove the car that night. It was her way of protecting Do Hoon. But of course she did not know the gravity of the accident, involving Ji Hee, a woman who was pregnant and a possible victim of the accident. Do Hoon in his scared way, did not tell her that he saw JH that night, so YJ was a bit confident that there probably some mistake. What she knew about was the big container that was there on the streets which caused the bumper of the car vent. Even Do Hoon wants to tell the whole story to the police she was adamant to let her take the fall. I guess, she was sorry and anxious of what will happen to DH career now that he is already a prosecutor and just started working. She is willing to sacrifice herself all in the name of love. But what awa...