During MV filming for 'Unnies' Slam Dunk 2', Hong Jin Kyung suddenly said to Kim Sook, "I didn't tell Park Bo Gum my new number after I changed it. He must've been so surprised.."
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To this, Kim Sook commented, "Jin Kyung ah, you're a mother of a child but why are you so cute? You know you're cuter the more I get to know you. Why didn't I become close with you when I was younger?"
Hong Jin Kyung responded, "We didn't have the chance to meet" and Kim Sook said, "I know right? Why did you be a model? You should've been a comedian."