http://www.asianfanfics.com/story/view/789461/mean-guys-kai-sehun-baekhyun-kyungsoo-baekyeol-kaisoo-kaibaek

Going to based off of the movie "Mean Girls" 

Kaisoo centered couple although the story mainly revolves around Kyungsoo and Baekhyun. Hope you guys check it out! I'll probably post the first chapter today or tomorrow