pm/kakao plot idea if the mixture kind

I really want to do a plot that mixes the k drama W of two worlds but with a mafia twist. 

I also want to do a regular mafia plot where the guy has a kid that the moment didn't want but he did. He raised the kid in the mafia ways but made sure the kid was always protecteand and when the kid takes a liking to the girl the guy knows that she is ok and maybe the one. 

Both plots are 3rd pov. And straight and I'm the girl