UPPER AND LOWER CLASSMATES WE CAN NEVER FORGET.

V of Bangtan Boys (BTS) and EXO's Baekhyun are upper and lower classmates?
The ending stage of SBS's entertainment program 'Popular Songs', netizens found out the two!!!

 
▲Image Source:Online Community &
A capture of SBS「Popular Songs」(http://tv.sbs.co.kr/gayo