Eun Chae is the new member of the group DIA added to the group in March 2016, but she presented herself after Cathy and Chae Yeon came back from the show “Produce 101”. She became the youngest member of the group and substituted the “Maknae Line” of DIA, which consisted of three members previously.

On May 28, 2016, DIA performed at the Wonju Rose Festival and Eun Chae was announced as the latest addition. Firstly, she was a trainee at Ensoul Entertainment together with Project A.