Kim Yoo-jung and Kim Hyun-joo's appearance 22 years ago

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It is said that Kim Yoo-jung and Kim Hyun-joo, who are appearing in dramas together now, appeared in the same commercial back in 2004.
Since there is exactly a 22-year age difference between the two, Kim Hyun-joo's age back then is the same as Kim Yoo-jung's age now.