Bad and Crazy (2021)

A heroic drama about a competent yet "bad guy" Soo Yeol who recovers his humanity after meeting K, a righteous but crazy person. Soo Yeol is a competent police officer of the drug squad who only has high school education. Due to his ambitions, he only takes on cases his superiors like and gives them the desired outcome, yet turns a blind eye to some injustice. As the promotion period nears.