Help finding yaoi/shounen ai

It’s very old and old art style. Korean. Originally in many form but rereleased as a web toon. Very long story.

MC is a playboy who cheats on his boyfriend. Boyfriend gets with a gangster and MC somehow starts owing him money. Gangster uses MC as an errand boy and eventually loves him.

Also I remember a plot point of the gangster getting porked by his adoptive father. It was weird.