[talk] IU and Cha Eunwoo, who I want to see once, twice, and keep seeing

The video showed IU and Cha Eun-woo performing 'The Rose of Sharon Has Blossomed' on the roof of a building.
IU appeared to be teasing Cha Eun-woo from behind, and Cha Eun-woo noticed this and ran to catch IU, causing laughter.

It was so good to see, I had to watch it on video! Haha