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".