Park Ji Yoon will make a comeback with a new single album "Inner Space".

On February 11th, Mystic89 unveiled teaser photos and tracklist of the single album through Park Ji Yoon's Official Facebook.

In the photos, Park Ji Yoon is wearing white dresses, transforming into a goddess with her alluring look. With just simple make-up and hairstyle that showcase her perfect V-shaped face and sharp jawline, she exuded an elegant yet mysterious atmosphere, which has attracted much attention.

The single which included 2 songs "Beep" and "My Brain Structure" and is said to be the work of both Yoon Jong Shin and Park Ji Yoon, as the singer directly involved in the lyrics writing herself.

In addition, "My Brain Structure" music video will be released through Mystic89 official Youtube channel on 11th at 8pm kst, while the single album "Inner Space" will be released on 17th.