IU appeared in the preview of an upcoming documentary of Kim Yuna.
The documentary is called "The Last Show, Adios Nonino" which will be broadcast at MBC on January 1st at 6:20pm kst. MBC also released the preview on 27th.
The thing that attracted netizen is the comment from IU about Kim Yuna,"Kim Yuna has changed to a devil or an angel, I'm really not sure about it. But there's one thing I know that everyone can feel the majestic aura around her"
Kim Yuna and IU had a duet called "Ice Flower" back in 2011 and the song was used for "Kim Yuna's Kiss and Cry" show.
Check out the preview below