RaNia has released a mysterious teaser image!

It seems the girl group is returning with a party theme as well as four new members. You can't see any of the members because they're all in silhouette, but fans are definitely excited for their return!

Stay tuned for more.

SEE ALSO: Nature member Haru addresses the promotional video introducing her as a hostess at a Japanese adult establishment

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[Thanks to everyone who sent in the tip!]