Rainbow pre-released images of 4 members, revealing a 'sweet pretty girl' image.

Today, they released their new album, Rainbow Syndrome, album images through Naver Music. 

They released 4 of the members images, revealing a cute image, gaining much interest from fans.

The images revealed a sweet and cute image with a valentine them with red balloons and the members dressed up in high  heels and dresses. 

This will be their first comeback after a 1 year and 8 month hiatus. The group will be revealing a different and upgraded image with this new album. 

This album will be released in two parts for a more interesting concept.

Tomorrow, they will release the image for the other 4 members as well as a group shot.

On the other hand, they will be holding a showcase on February 13.