Yoon Se Eun is a singer, dancer, child actress and member of STAYC (스테이씨). She graduated from Gajaeul High School, and before debuting, she spent 3 years as a trainee, including time at PlayM Entertainment (formerly known as Fave Entertainment). She was supposed to be part of the agency's new group, WEEEKLY, but the debut date kept being postponed, so she decided to leave. She switched companies to High Up Entertainment (하이업엔터테인먼트) and made her debut in November 2020 as STAYC's vocalist with their first single album, "Star To A Young Culture". In August 2023, all members decided to take turns as leaders, so she is now co-leader alongside Si Eun. (Source: MyDramaList) Watch drama online for free.