BE:FIRST, the sensational Japanese group, has just dropped a scintillating Special Performance Video for their hit track "Mainstream." The video is an absolute banger that's bound to get you grooving.

In the video, the group showcases their signature dance moves while sporting matching outfits and caps. What's even more impressive is the presence of numerous backdancers, all clad in full-body suits and caps, dancing in perfect harmony behind BE:FIRST. The synchronization is mind-blowing, making it a mesmerizing spectacle.

The video is set against a backdrop of dark lighting with spotlights illuminating the group, adding to the overall intensity of the performance. BE:FIRST's "Mainstream" Special Performance Video is a must-watch for fans and anyone who loves incredible choreography and captivating visuals. Don't miss out on this electrifying showcase of talent and style.