BamBam released a new concept photo of the pre-single "Who Are You," which will be released on December 28th, further raising expectations.

The new concept photo of Who Are You, which was released on BamBam's official SNS at midnight on the 20th, captured BamBam styled in all black and Seulgi of Red Velvet crossing.

The concept teaser featuring a mysterious woman and the promotional contents of the pre-single Who Are You, which leads to the first MV teaser featuring Red Velvet Seulgi, are drawing various speculations about what story BamBam will tell through this new song.