LABOUM (Yu-jeong, So-yeon, ZN, Hae-in and Solbin) released teaser images of its member Zien on its official SNS channel at 1 p.m. on Sept. 5. It opened Zien's teaser image for the fourth time since the release of teaser images by Solvin, Haein, and Soyeon from the previous two days. In the released photo, Zien is showing off not only a more vivid visual but also a unique atmosphere, raising expectations for his comeback with a completely different atmosphere.

LABOUM, which will make a comeback with its first full-length album "Two Of Us" on Wednesday, is raising expectations for a comeback, signaling a more upgraded appeal than before, and all of its members have participated in the album's work to enhance its maturity. Also, the album will feature solo songs by the members and will make a comeback on September 19 by releasing music and music videos.

Meanwhile, LABOUM has continued its steady activities through individual activities by members, including dramas, entertainment shows, and OST, while Zien has been active through his steady acting activities, including movies "I've Staked Everything" and web drama "A Ghost Brother."