SM recently updated the description of their YouTube video with the new 'Ko Ko Bop YouTube EVENT'. They wrote, "To show our gratefulness for the love you've given to 'Ko Ko Bop', we prepared a special event! When the YouTube MV for 'Ko Ko Bop (Korean ver.) surpasses 30 million views, we will reveal EXO's special video as well as a special event, so stay tuned!"
The Korean version of the MV currently has around 16 million views.
Wonder what that special event might entail? Stay tuned for further updates!