Arang and the Magistrate

It tells the story of a cynical and not-so-friendly government official named Eun O, who wanders the whole nation to look for his mother, who disappeared because of his mistake. Eun O has the ability to see ghosts, so he's used to being bothered by many kinds of ghosts. As a result, he isn’t afraid of ghosts anymore. Then, Eun O meets a virgin ghost named A Rang. Before she became a ghost, A Rang was a beautiful girl who was murdered. A Rang asks Eun O to seek vengeance for her death, and Eun O tries to appease her request.

Synopsis: MyDramaList