The group uploaded a prologue clip for 'Who, You', a 19s clips of a kid looking out the window. This video dropped only four days after the boys' announcement of their comeback date with heartfelt handwritten letters. Accordingly, a teaser clip was released for their comeback and to let everyone know that they'll be returning soon. Check out the clip above and stay tuned for more.

NU'EST W will be making their comeback on June 25th. Are you excited?