Jungkook FF: Mafia Queen falls in love with a nerd, not knowing his a Mafia King

Warning:
In this story, please note that all the idols and characters are purely imaginary; there is no real-life element included; it's just a made-up tale. Please, no hate, and if u don't like the story, DON'T READ IT

Trailer:
Black Dove is the 2nd most powerful Mafia Gang in Seoul, led by the fearless and cold but soft to family and friends, and most cruel, young and beautiful lady, the Mafia Queen which she call herself Diamond aka her real name Seo Yn and her gang and friends Blackpink in the outside world, everyone fears them but doesn't know who they are. Apart from that, everyone also fears one of the most and number 1 and top most powerful mafia gang called Black Swan, which is led by the cold-hearted and most cruel like Yn, and most dangerous unlike the mafia queen, the Mafia king led by JJK aka Jeon Jungkook and his gang and friends BTS, he owns the school which Yn is studying. Still, she doesn't know, and also, all the shopping mall is also owned by him, same as the mafia queen; everyone fears them, but they don't know what or who they are. One day, Jungkook went undercover as a nerd at the school he owns to find his enemies, who is the son of his rival that killed his parents, and he wanna catch them, but what happens when the Mafia Queen falls in love with a School nerd? not knowing it's her business partner, the Mafia King himself