Seventeen will be ready for their upcoming 9th mini-album, 'Attacca' comeback.

The popular boy group has been releasing various teaser photos to prepare for their comeback. All thirteen members have been displaying a more mature masculine side to their charms for this upcoming album.

On October 21 at midnight, just a day before the release, Seventeen released the second official teaser for "Rock with you" from their 9th mini-album. In the video, the members rock out on stage as they put on a performance for them.

Meanwhile, Seventeen's 9th mini-album 'Attacca' is set to drop on October 22 at 12 AM EST.