Park's breakthrough came with the 2010 drama Sungkyunkwan Scandal, a coming-of-age drama in which her character, an intelligent and resourceful young woman, disguises herself as a boy in order to enter the most prestigious learning institution in Joseon. This was followed in 2011 by another success with City Hunter, based on the titular Japanese manga. Park starred opposite Lee Min-ho in a story about a vigilante out for revenge and justice, and the secret Service agent he falls for. Park's success on the small screen resulted in increased advertising offers for the Actress.