TO1 is gearing up for their comeback with their 2nd mini-album, 'RE:ALIZE'.

Following the 'Real X' version of individual posters, the group dropped the group teaser poster on October 24 at midnight KST. In this group teaser, members exude an upgraded, calm and quiet charisma, as they prepare to return with a more mature image after their "Son of Beast" promotions earlier this year.

As previously reported, TO1 will be unveiling three unique sets of concept teasers leading up to their full comeback, including the 'Real X' version, the 'Lie X' version, and the 'MIX' version. 

Meanwhile, TO1's 2nd mini-album 'RE:ALIZE' is set to drop on November 4 at 6 PM KST. Stay tuned for more teasers to come until then.