KinnPorsche (2020)

Blurb:
Ever since the tragic death of his parents, Porsche’s life has been a balancing act between attending college and bartending to support his younger brother and pay off his deadbeat uncle’s gambling debt. When he witnesses a gang of thugs attacking a handsome young man in the alley behind his bar, he’s reluctant to intervene—until he’s offered fifty thousand baht to help the stranger escape.

The stranger is known as Kinn, the second son of a notorious crime family. Impressed with Porsche’s fighting skills, Kinn makes a proposition: if Porsche agrees to become his personal bodyguard, his debts will be absolved. Porsche doesn’t want any trouble, especially not the kind of trouble Kinn deals in. But Kinn always gets what he wants.

Source: www.anisearch.com/manga/69245