Luminous is a four-member k-pop group associated with agency SE Group Entertainment. The group consists of: Young Bin, Steven, Suil and Woo Bin. The group will be appearing on stage with the mini-album Vision released in August 2021 and made their official debut on 9 September of the same year with the album titled. Youth. Fans of the band call themselves "Lumini" (루미니), which is a combination of the band's name and the English word "gemini".