N.Flying is back with an interesting set of photos for their upcoming comeback.
The July 28 teasers were shared by FNC Entertainment under the theme Unlock Stage 1: Hidden Truth. The photos show two magazine covers, and one other photo is of a giant fish and a volleyball.
One magazine features CNBLUEs Lee Jong Hyun holding a giant fish with the title The real thing is here! CNBLUEs Jong Hyun appears at the Seomjin River. The other shows the silhouette of a mermaid swimming in the ocean, with various article titles about mermaids surrounding her.