In a noteworthy performance at SUMMER SONIC 2023, BE:FIRST took the stage at the Mountain Stage on August 19th, presenting their well-received track "Boom Boom Back." The venue at MAKUHARI MESSE was filled to capacity, and the audience displayed evident enthusiasm throughout the show.

"Boom Boom Back" showcases BE:FIRST's signature blend of choreography and musicality, with the video offering insight into the group's stage presence and the engaged response from the audience.

Whether you are a long-time fan or new to BE:FIRST's work, this video provides a glimpse into the lively atmosphere of a packed venue and the genuine enjoyment shared by attendees.