Choi Ye Bin begins the making-of video by practising the dance routine for her character's part-time job. “I'm embarrassed,” she says to the camera. The idea is that Eun Byul (Choi Ye Bin) made her own makeup.” My body and mouth won't move together,” Choi Ye Bin continues. They each have their own game. I put in a lot of practise time. If I only had to dance, I could do it.” Choi Ye Bin gets caught on a dancing routine while shooting. Oh?” she says with a smile. “All of a sudden, my body gave out.”

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At the studio, Choi Ye Bin can’t stop laughing because Ha Do Kwon’s bright suit looks as if it’s about to burst at the arms. She comments, “Teacher Du Gi (Ha Do Kwon) is so funny.” Nonetheless, Choi Ye Bin still tears up while singing as she immerses into her role, thinking about her on-screen mother and her character’s hardships. Meanwhile, Ha Do Kwon pretends to be excited as Choi Ye Bin sings. He continues to dance despite there not being any music. At the end, Ha Do Kwon sighs and states, “That was so tiring.”

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Ha Do Kwon tells Choi Ye Bin, “You must be excited because it’s about to end.” Choi Ye Bin replies, “I just get really excited when I see Mr. Du Gi.” As he leaves the set with flowers after filming his final scene, Ha Do Kwon says, “Goodbye, ‘Penthouse.'”

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Despite the serious nature of the situation, Lee Ji Ah and Kim So Yeon practise together with casual smiles. While acting out her fall, Lee Ji Ah even becomes comfortable sleeping on a mattress on the ground. “Unnie, be careful,” Kim So Yeon says as she prepares to execute the wire sequence. “How should I be careful?” Lee Ji Ah asks, jokingly. Despite being terrified of having to fall backwards with wires, Lee Ji Ah films the sequence in a beautiful stance.