Susa 9-dan 0

About this title

Hong Dal-Gi, the detective who lost everything due to one mistake, Yu-Jin, a violent detective who receives disciplinary action as if it were a meal, and an elite informant who graduated at the top of his class at the police academy. These three detectives who do not get along at all form a team and gradually become one as they solve cases. (Source: Naver, translated)