Hahahahahah! Totally missed the teasers XD Saw an article on allkpop that the FIFTH teaser was out and I was like "They've only released one... O_O"
But here they are:

Seung Yup



Sung Min



Hyo Jun



Yun young




This somehow gives me an INFINITE flashback with all the Sung and Yun's. Y U Korean people have similiar names O_O
Ps. These aren't their official MV teasers, it's for their program "Making the stars" <-- as you can see at the end of the clip