The nerd(Jungkook x reader)

You are fat and nerdy girl. In school you are bullied by Jeon Jungkook and his gang wit the most popular boys at school. Soon you moved to America, because of your parents and then your live changed. You are not fat and ugly anymore now you are the most popular girl in your American school. One day you need to return back in Korea and go to your old school. What will happen then?