EXO Baekhyun plays pranks on Sehun

Seems like Sehun is angry because of Baekhyun. Can you guess what happened to him?

Well, Baekhyun gave him a nip on back of his neck.

You can see that Baekhyun hits Sehun on the head, :) The mischievous boy likes to play prank on the Maknae.