Be:First (stylized in all caps) is a Japanese dance and vocal boy band formed and managed by BMSG and signed to B-ME, a joint record label with Avex. The group was formed on November 3, 2021, through the reality competition show The First, which is hosted by Sky-Hi and debuted on August 31, 2022 with heir studio album Be:1. The group consists of seven members: Sota, Shunto, Manato, Ryuhei, Junon, Ryoki, and Leo.
The group are BMSG's first act. Sky-Hi created the company after identifying issues in the Japanese music industry, including a lack of options for talent to show themselves, leading talented performers to leave Japan for the wider opportunities offered by the Korean music industry.