He's my enemy slash fiance

tough
,fierce,bitch,asshole and a fighter that's should be the attitude of a gangster. what if one day a friend called you for a fight against the most fiercer and dangerous mafia boss .what if you two faced each other and fight against one another. Queen vs.King an army vs a squad a team vs. a group who should win. what if your parents didn't know you two are enemies knor a gangsters what if they'll make arrangement between the two of you what if you'll marrying your enemie would you two fall in love with each other or being just he's fiance/enemy