Le Sserafim is a South Korean girl group formed by Source Music, a sub-label of Hybe. The group consists of five members: Sakura, Kim Chaewon, Huh Yunjin, Kazuha, and Hong Eunchae. From Wikipedia
Freja will be available for a limited trial from March 21-24, with her official debut set for Season 16, as fans speculate about the teased return of lore character Emre Sarioglu.