On Nov. 14, girl group MAMOO released their new full-length album concept photo for the first time.

MAMAMOO has begun a full-fledged countdown of their comeback, posting personal concept photos and preview videos of their second full-length album, "Reality in BLACK," on their official SNS and YouTube channels.

In the released photo, SOLAR broke down into a princess who wore a crown on a colorful dress and revealed an elegant charm, while MOONBYUL turned into a wonderful music video director with a loudspeaker inscribed with "DIRECTOR."

WHEEIN is an environmental activist with a strong look in orange jump suit, and a mother, HWASA, who cleans the room with her chic self, which gives each member a different charm.

Also, in the concept preview video, the introductory version of the song from the matching new album caught the ear, raising questions about the new album, along with images of the members living their lives as princesses, music video directors, environmentalists and mothers.

Like this, MAMAMOO said, "What if... They put forward the "Parallel Cosmology" worldview based on the premise of "MMM is not MMM?" and marked the full-fledged start of MAMAMOO "MULTI+UNIVERSE."

The diverse lives of MAMAMOO members in other universe, located on parallel lines, rather than in the universe where MAMAMOO lives, have been revealed, providing a rich and fruitful fun.

Since MAMAMOO’s concept photo is a picture of the four members present in '2nd Universe,' many expectations are high for MAMAMOO in the multiverse to be unveiled in the future

MAMAMOO released its second full-length album, "Reality in BLACK," on Nov. 14.

As the company releases their second full-length album every three years and nine months since their first full-length album "Melting" released in February 2016, it boasts a large scale with a wide range of concepts, signaling diverse attractions and fun.