The title of their song reads "Doogeun Doogeun" or "Pitapat", signifying the beating of the heart. The MV teaser does just the right amount of teasing as the girls are presented to us as silhouettes for now, letting us focus on the snippet of the song.

So get ready to welcome BESTie into the scene on the 12th, but in the meantime, check out the MV teaser above!