My Mafia Housemate ♠🔫

Y/N is a girl ,aged 20, she own a cafe, she very generous girl, kind and very hardworking, she so pretty, a lot of guys come to her cafe just want to try Y/N ,but Y/N is the one who love herself, she love a guy who can really accept who she is.
Jaehyun is biggest Mafia in the world, he is very cold person and heartless to his enemy . One Night he lost on his mission to kill someone and got attack, he run until he found a cafe still open in midnight, he run there and ask for help
Will Y/N help Jaehyun? The biggest Mafia?