SEE ALSO: BESTie released Dahye and Haeryung's teaser photos!

Following Hyeyeon, Dahye, and Haeryeong, U.JI's teaser image also takes a turn from the group's first comeback with the vocalist looking demurely sexy in her simple black and white outfit. 

The girl have so far hinted on a laid-back yet sexy concept to go along with their Brave Brothers produced title track, leaving fans to eagerly check off the dates until the girls' comeback on October 17.