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From Wikipedia
Be:First is a Japanese 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 six members: Sota, Shunto, Manato, Ryuhei, Junon, and Leo; Ryoki left the band in 2025.