On the February 27 airing of MBC Every1's 'Weekly Idol,' Yoon Ji Sung, who recently made his solo debut, joined as the guest.
MC Nam Chang Hee said, "I was very impressed with Yoon Ji Sung's appearance on 'Mask King.' I didn't know he had such a nice voice." MC Kwanghee asked, "Did you expect many people to recognize you?"
Yoon Ji Sung replied, "I thought even the fans wouldn't know." He explained, "Honestly, my part lasted 2-3 seconds during Wanna One." Kwanghee brought laughter as he said, "I feel you."