PRIMROSE (프림로즈) is a 4-member girl group under AO Entertainment, consisting of Rainie, Nahyun, Ruby, and Hayun. Yeum left on March 23, 2023, due to health reasons. PRIMROSE is expected to “create a new paradigm different from existing idol groups,” as well as “foreshadow a new idol lineage and open a new era of K-Pop.” The group made their debut as a duo (consisting of Ruby and Yeum) on January 13, 2023, with their first mini album, RED MOON.