SF9 unveiled the first concept photos for their second regular album 'TENACITY' on the 10th through FNC Entertainment. The album marks SF9's 10th debut anniversary and carries meaningful significance in its title, combining 'TENACITY' (meaning tenacity and indomitable will) with 'TEN' (10th anniversary). The concept photos express SF9's strong determination to break free from constraints and move forward, featuring the eight members (Youngbin, Inseong, Jaeyoon, Dawon, Juho, Yutakev, Hwiyoung, Chanhee) in black and white tones, evoking curiosity about their upcoming narrative. SF9 will officially release their second regular album 'TENACITY' on all music platforms at 6 PM on the 26th.