An episode experienced during filming was revealed on the YouTube channel 'Yuin Radio,' featuring IU and Byun Woo-seok. The two are currently co-starring in the MBC drama '21st Century Great Lady.'

IU recalled the 'breadcrumb incident' that happened on set. He explained that he didn't have enough time for dinner and ended up skipping it after just taking a bite of bread. Later, Byun Woo-seok asked, "Did you eat dinner?" and IU replied, "No." However, there were breadcrumbs left at the corner of IU's mouth. IU shared his feelings at the time, saying, "It was really humiliating and I felt so embarrassed I wanted to die." Byun Woo-seok said, "Even that looked so cute."

Byun Woo-seok also mentioned a situation during filming when he burst out laughing, causing many retakes. He explained, "Once I get stuck on a funny moment, I keep laughing," and said that filming was often stopped because of this. IU also tried slapping his own cheek to hold back laughter but failed, apologizing to the staff.

During the broadcast, host Yuinna relayed fans' questions to the two. Regarding Byun Woo-seok's bright personality, IU described him as "a truly transparent person," with Yuinna agreeing. Yuinna joked, "If you ever feel sleepy or upset, please be sure to tell us," and IU responded in kind.