The boys of ONF have released another concept photo for their upcoming summer popup album, 'Popping'! 

ONF released a new summery concept photo on July 30 at midnight. In this photo, make a splash as they cool off for the summer and enjoy a time together. 

Meanwhile, ONF's upcoming special mini album 'Popping' includes a total of 5 tracks, including a title track of the same name. The group's full comeback is slated for August 9 at 6 PM KST! So stay tuned for the release, and don't miss out on any teasers.