Wonder Boyz signaled their comeback by releasing a video teaser for their new single, "Tarzan", featuring a special appearance by�Girl's Day's�Hyeri!

Wonder Boyz' agency revealed, "Girl's Day's Hyeri, who is close friends with the Wonder Boyz, heard about their comeback and volunteered to make a cameo in the music video for their new single 'Tarzan'."

The still cuts and video teaser show Hyeri making her appearance as 'Jane', whose name fans recognize as Tarzan's love interest in the classic story.

The Wonder Boyz will return on the 14th, so until then, check out the teaser below!