On the July 8 airing of 'Unnie's Slam Dunk', the Unnie's MV making process was revealed. Jackson, who made a special appearance for Min Hyo Rin, was asked to play a mischievous boyfriend. 

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Before the MV shooting, Hong Jin Kyung, amazed at Jackson's fluent Korean, asked, "Your Korean is so good. Are you a Korean American?" Jackson answered, "No, I am completely Chinese. I learned Korean from dating." Unnies then poked fun at Jackson by asking him questions about his past girlfriends. Kim Sook asked, "So have you ever lied to your girlfriend?" 

Jackson quickly responded, "I don't have a girlfriend right now so how could I lie." Unnies didn't give up, and continued, "No, in the past." Jackson then spilled, "I do sometimes. For instance, I tell her I am sleeping and talk on the phone with someone else."