On October 18, a source from the drama announced the news, saying, “Krystal is going to make a special cameo. We cannot yet reveal what her role is or when she’ll be appearing.”
The f(x) member had previously worked with actor Lee Min Ho when she starred in the 2013 drama “Heirs.”
“The Legend of the Blue Sea” is an upcoming fantasy-romance drama about a mermaid who meets a genius conman and starts adapting to life on the land. The drama recently had its first table reading with a full cast including Jun Ji Hyun, Lee Min Ho, Lee Hee Joon, and Cross Gene’s Shin Won Ho.