If you guys haven't checked out The Scientist by the incredibly talented electricsherlock, you totally should! Complex characterization, intriguing relationships, OTPs baekyeol and kaisoo (minor), the OT12, angst, drama, amazing plot twists ... Need I say more? Start reading now:

http://www.asianfanfics.com/story/view/249000/the-scientist-angst-romance-exo-baekhyun-chanyeol-baekyeol-kaisoo