Rainbow Blaxx reveals 3rd member, Seung Ah

Rainbow Blaxx reveals the teaser video for its 3rd member, and it's none other than Seung Ah.
So far, we have Jaekyung, Hyunyoung and SeungAh for Rainbow Blaxx.

Watch below:

Do you have any idea who will complete the 4 members of Rainbow's sexy sub-unit?