SF9 is starting to warm up their engines to make a comeback next month.

The guys are making a comeback in approximately six months since their last comeback in July of this year. On December 19 KST, the FNC Entertainment boy group kicked off the countdown until the release of their 12th mini album 'The Piece OF9' with a new coming soon poster. According to the poster, the album's title track will be called "Puzzle."

Meanwhile, 'The Piece OF9' is set for release on January 9.

Check out the full teaser image below!