Boss-ui Sunjeong

A former gang leader who left his daughter 14 years ago realizes that his wife is dying. The wife wanted him to take care of his daughter, he decided to take care of his daughter that he stopped being a gang leader. Since the daughter hated her father, he told her that he is a father's friend who is here to take care of her.

(Source: Daewon C.I. , altered and translated)