On February 18th, Sunmi released the concept photo and concept video of her new song 'TAIL' on the official SNS. In the released concept photo, Sunmi matches an intense red dress with leather gloves, reminiscent of a catwoman in a movie.

In particular, Sunmi overwhelmed the viewer's gaze with her unique fatal gaze and unique aura. In another photo, Sunmi perfectly digested the mask made of cat mask and mesh material, creating a secret yet dreamy atmosphere.

The concept video released on this day aroused the curiosity of fans by intersecting Sunmi and a black cat along with Sunmi's narration, “Shakes the Tail”. Following her concept video, Sunmi said “do not hide. Express yourself”, delivering a confident and positive message, and raising her interest in the music video for “TAIL”, which will be released on February 23rd.