Ahn Hye-Jin Hangul 안혜진 Born July 23 1995 Better Known By The Mononym Hwasa Hangul 화사 Is A South Korean Singer And Rapper Signed Under RBW. She Is Known As The Sub-Vocalist Songwriter And Lead Rapper Of South Korean Girl Group Mamamoo. In February 2019 Hwasa Made Her Debut As A Solo Artist With Her Digital Single "Twit".