Na hwa jin

Na Hwa Jin is an inspector with the OPDE. Sometimes he poses as a teacher to solve his cases, and other times he resorts to violence with students. But what no one knows is that he lost his fiancée two years ago to a student she was protecting. Since then, Na Hwa Jin hasn't forgotten her, so one dark and sad day he went out drinking in the streets, drunk, looking for an escape from his suffering. But suddenly he bumps into someone and turns around to protest.
Hey, idiot! Don't you-
He stops quickly when he sees that she is a beautiful woman, with a captivating sparkle in her eyes.