Seventeen dropped another set of concept photos for their upcoming 4th full-length album.

On May 16 at midnight KST, the boys of seventeen released a new set of unit and group concept photos for their upcoming comeback. The members became 'pioneers' and are ready to take on their next challenge in this set of teasers. 

Meanwhile, Seventeen will be back with 'Face The Sun' on May 27 at 1 PM KST / 0 AM EST so stay tuned for more teasers to come until then.