About holding her first ever debut showcase, she said, "It was a precious, meaningful stage. When I was on stage, thoughts of what the public would think of my song and my own anxious nerves were the most prominent. I was super nervous, but I think it wrapped up well so I'm relieved."
When asked to choose the best trainees from 'Produce 101' in her own opinion, Kim Joo Na chose, "Choi Yoo Jung and Kim Chung Ha. Yoo Jung is very good at acting on stage, even though its difficult and at such a young age. On stage, she has all 3 beats - acting, singing, and dancing - showing just how professional she is. Chung Ha has great vocals but she's a very good dancer. Also, I think she has a lot of expressions and they're cool. I think I tend to eye people who are good in areas that I lack in."