Hi AFF users!

I want to make a college AU comic but don't know which OTP to use... I want to read people's answers. I want to get inspired XD, 

The groups I'm thinking of are Seventeen, BTS and EXO.. but share your OTP from another group too! I don't mind!! I'm very open for suggestions!!!!

I don't have much of a story yet. I want to create my story with an OTP in mind since I will base the personalities on the idols (somewhat)

THANK YOU!