The participants of MBC's competitive singing program, 'Mask King', appeared as guests on MBC radio program, 'Park Kyung Lim's 2 O'Clock Date', for a fun talk session.

Kahi talked about how she got to appear on the program, saying, "Honestly, I was touched when I saw Sandeul, so I ended up participating . . . Seeing him after he finished his song and the incoming performance, Sandeul looked really innocent, optimistic, and like he was enjoying himself.  I was touched by that image, so I thought to myself, 'I want to go on [that show], too.'"

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Sandeul revealed that he was on the panel during the pilot broadcast.  He said, "The performances looked really fun.  I wondered to myself, 'What am I doing here [on the panel]?  I should be there [on stage].'  That's why I asked the writer to please put me in if the show became a regular program," and revealed he went right into the first episode, which is where he wowed everybody with his incredible vocals.