On July 22, a representative from 'High Society' confirmed to TV Report, "It's true that Kim Joo Na is Kim Soo Hyun's younger sister. We just wanted to be careful about mentioning family-related matters."
Since Kim Soo Hyun had previously been mentioned as an only child, Kim Joo Na's agency clarified, "Kim Joo Na is Kim Soo Hyun's sister. We have learned that she is Kim Soo Hyun's half-sister."
Kim Joo Na had been a trainee for the past three to four years, and finally made their debut with the 'High Society' OST track "I Can't Live Without You".
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You can listen to her debut track right down below!
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