This also marks the first comeback since Kahi's official graduation from the group to pursue a solo career.

[2] On 11 June 2012, the first teaser image, featuring all eight members, for the comeback was released to the public via Pledis Entertainment's website.

Embrace You magazine described the maxi single as "creative, fun, exciting, well organized, and demonstrates brilliant production efforts.

There are no fillers or musically incorrect additions; each track has the potential to stand on its own and appeal to not only pop and dance fans, but to lovers of ballads and R&B."

[10] The title track, "Flashback", was downloaded 202,940 times in South Korea after 2 days of its release.