"Son's Girlfriend" IU Cared for Her In-Laws... Over-Immersion in 'Grand Duchess'

*This content was translated by AI.

Singer and actress IU mentioned her connection to '21st Century Grand Duchess'.

On the 3rd, IU posted a photo on her Instagram with the caption, "Wow, Queen Uihyun and King Heejong."

The released photo featured musical actors Son Jun-ho and Kim So-hyun, a married couple, who appeared on KBS 1TV's 'Open Concert.' The two had previously made a special appearance as King Heejong and Queen Uihyun, the parents of Prince Lee An (played by Byun Woo-seok), in MBC's '21st Century Grand Duchess.'

Son Jun-ho shared the post, saying, "My son's girlfriend must have seen it." He then pondered, "Son's girlfriend. Daughter-in-law. Saega? What should I call her when we meet later?"

In response, Kim So-hyun said, "Sungdeok (successful otaku)," and added, "My mouth was stuck to my ears, and I couldn't even eat."

Meanwhile, '21st Century Grand Duchess' is a work depicting the fate of a woman who is a chaebol with everything but is merely a commoner by status, and a man who is the king's son but has nothing, set in a 21st-century constitutional monarchy South Korea. It is a romance about breaking class barriers and forging one's destiny. The series has been well-received, recording a peak viewership rating of 11.2% (based on Nielsen Korea nationwide data).

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*This content was translated by AI.