*This content was translated by AI.

Actress Yoo In-na shared the on-set atmosphere of her 'best friend' IU and Byun Woo-seok.
On the 29th, a video titled 'First public reveal of a perfect couple from their school days' was uploaded to the YouTube channel 'Yoo In-na Radio'.
In the released video, IU and Byun Woo-seok, who are working together in the MBC Friday-Saturday drama '21st Century Grand Duchess', appeared and met Yoo In-na.

That day, IU and Byun Woo-seok conducted a 'One Mind, One Body Quiz', and Yoo In-na praised them, saying, "You two really fit well together." In response, IU said, "We really fit well and understand each other well," sharing about their warm chemistry.
Yoo In-na said, "What I heard a lot was that they had so much fun together throughout the filming," and added, "They said it was so fun on set that they didn't feel tired." Byun Woo-seok replied, "That's a relief," and Yoo In-na added, "They said they play together like kindergarten students," which drew laughter.
Next, Byun Woo-seok said, "They suddenly throw in a scenario," and IU also explained their scenario work with Byun Woo-seok, saying, "They jump right in without any setup. Suddenly, they say, 'Please stop thinking my feet are ugly now.' At first, I was flustered, but now I go along with it."
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*This content was translated by AI.
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