Lee Chae Young, known professionally as Isa, is a South Korean singer, dancer and member of STAYC (스테이씨). She graduated from Gajaeul High School and, before debuting, she spent 3 years as a trainee. She made her debut in November 2020 as the group's lead vocalist with their first single album, "Star To A Young Culture". They are managed by High Up Entertainment (하이업엔터테인먼트) and have enjoyed commercial success, especially with a big international fanbase. In August 2023, all members decided to take turns as leaders. (Source: MyDramaList) Watch drama online for free.