It was previously reported that KARA's Nicole will be returning with a new song "Mysterious".

On February 28 at 12 PM KST, the first concept photo and teaser video for "Mysterious" were released through Nicole's official SNS.

In the concept photo, Nicole drew attention with her alluring figure. Blurred shapes overlap around Nicole, adding to the mysterious atmosphere. The color combination of red and black doubles the dreamy mood.

'Mysterious' is Nicole's first solo song in 8 months since "YOU.FO" released in July of last year. Nicole, who heralded her unconventional concept with her first teaser, is paying attention to her transformation and style that she will show with this new song.

The new digital single 'Mysterious', will be released on March 9 at 6 PM KST on various online music sites.