OnlyOneOf is a South Korean boy band founded in 2019 by 8D Creative. The group consists of five talented members: Rie, Junji, Mill, Yoojung, and Nine. OnlyOneOf is known for their unique music style, which combines elements of R&B, pop, and electronic music. Love left the group on August 2, 2021, due to personal reasons. KB left the group on August 8, 2025.

Their music is often sensual, atmospheric, and experimental, which has earned them a loyal fanbase. Hits like "Savanna," "Angel," and "dOra maar" have made the band well-known and brought them recognition in the K-pop scene. OnlyOneOf stands out with their creative music production, sophisticated choreography, and charismatic stage presence.