On the May 12th premiere of JTBC's 'Idol Room', Yoon Ji Sung revealed his younger sister had become somewhat of a star after she appeared on TV show. He said, "It becomes a big deal whenever she appears on a show. She says that she's a semi-celebrity."
MC Jung Hyung Don and Defconn asked, "Doesn't your sister want to go into entertainment too?" The Wanna One member responded, "She wants to be a show host, so she quit her previous job." Jung Hyung Don then joked, "Your younger sister is appearing on 'Produce 48'?"
Yoon Ji Sung replied, "That's something I haven't even heard."