H1-KEY continues to treat their fans to a delightful series of new teaser photos in preparation for their long-awaited comeback.

On February 25 at midnight KST, the girls released a set of group teaser photos to prepare for the second installment of their 'H1-KEYnote' project, "Deeper." In the group photos, the members continue to display their fresh and youthful visuals.

Meanwhile, the new single "Deeper" for 'H1-KEYnote #2' will be out next week on February 27 at 6 PM KST.

Check out the concept photos below!