This is a cute love story between Jeon Jungkook and the OC 

where the OC always gets compared with Jungkook which annoys her a lot 

hes also her childhood friend and neighbor 

link : https://www.asianfanfics.com/story/view/481009/next-stop-insanity-comedy-fluff-romance-bts-bangtanboys-bangtan-jungkook