Debut:
Jun 22, 2017
Korean: 시은
South Korea
Sieun (시은) is a South Korean singer from the predebut co-ed group CHECKMATE, under GRACE Company. She firstly debuted on UI Entertainment's girl group RAMISU (2017) that disbanded at the same year. She is also a former pre-debut contender for the supposed girl group Rendezvous (랑데뷰) from Parksal Company.