BE:FIRST is a 6-member Japanese boy group formed and managed by BMSG and signed to B-ME, a joint record label with Avex. It was formed through the survival show 'THE FIRST' held by rapper SKY-HI and streamed on Hulu Japan. The members are: Sota, Manato, Shunto, Junon, Ryuhei, and Leo. Former member Ryoki left on November 8, 2025. Before their debut, Sota used to work as a dancer, he choreographed and performed with different dance crews, winning 42 trophies in total.