[All] The duet was really good! Haha

It was a duet performance of the original song "It's You" by Sung Si-kyung and IU, sung by IU and Byun Woo-seok. Byun Woo-seok explained his reason for choosing the song, saying, "The lyrics were so similar to the situation between Hee-ju (IU) and Wan (Byun Woo-seok) in the drama that I really wanted to sing it."