Hyeon-Ji sent Sang-Yeo some sexy photos of herself, which turned him on, so to take his mind off after his “scene” with his stepsister, Sang-Yeo decided to video call sex with Hyeon-Ji
Gi-Tae kisses her. As Nayeon is unable to reject his advances, they share their first sex with each other, and then another, and so on. She also has sex while she's on her phone with her husband.