Na hwa jin

Na Hwa Jin is an inspector for the OPDE. Sometimes he poses as a teacher to solve his cases, and there are times when he resorts to violence with the students. But what nobody knows is that he lost his fiancée two years ago at the hands of 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, searching for a way out of his suffering. But suddenly, he bumps into someone and turns around to protest.
"Hey, idiot! Can't you se—"
He stops abruptly upon seeing that it is a beautiful woman, with a captivating glow in her eyes.