IU's "Twenty-Three" performance during the US tour was impressive.

It's IU, who performed 6 times in 6 cities in the U.S.

They really heated up the stage at every performance.

Anyway, I was watching the stage shorts a fan made for the song "Twenty-Three."

As expected, your vocal volume is explosive yet stable.

And back then... haha

IU has consistently youthful beauty that makes you wonder if she is really 32 years old.