what happens if the mafia is hired by billionaires? , this is the beginning

you are the daughter of a billionaire and you are an only child, you was always guarded by a bodyguard but my bodyguard resigned and you have a replacement and a mobster named yeonjun

yeonjun is willing to keep an arrogant, stubborn, conceited and cunning , and spoiled person like you for money

"so? what are you going to do today? I will take care of you" he said in cold tone, his voice deep and mascular