Jeong Se Hyun, or Saena, is a singer, dancer, rapper, and former leader of girl group FIFTY FIFTY. After dropping out of Haeundae Tourism High School, she later obtained her high school diploma. In middle school she was part of a dance group called “Lunatic” and later she joined the dance team “Horangdoongi” of Ho Dance Studio.
(Source: MyDramaList)