June 16, 1995
Ki Hui-hyeon, better known by the mononym Huihyun and former stage name Cathy, is a South Korean singer. She is best known as a member of the South Korean girl group DIA
DIA 1st Concert "First Miracle"
(Huihyun)
Love in Black Hole
(Anna)
Men on a Mission
(Self)
다이아′s 욜로트립
Produce 101
(Herself)