On the 27th of February, an episode of "Good Day" was aired on MBC. 

In the episode, the crew of the show went behind the scenes of the filming of a commercial that involved the stars of "The Moon that Embraces the Sun". The two actors involved in the filming was Kim Soo Hyun and Kim Yu Jung.

On this day, the two looked very friendly and looked like siblings. Kim Soo Hyun stated, "I'm happy we're filming this together. She's so pretty." regarding is co-star Kim Yu Jung. Also, as a response to his ever rising popularity, he said, "I think I met the perfect co-stars."

During the behind the scenes segment, Kim Soo Hyun was acting so silly and surprised the viewers with his unexpected side of himself. He seemed completely different from the image he creates in the drama "The Moon that Embraces the Sun".

Kim Soo Hyun melted all the people in the audience when he was looking at Kim Yu Jung like she was his daughter.