Sunmi guesses exactly the reason for Junho's outings and wants Yunho to rail her right infront of the camera Junho set up to give her son a good fap material.
Yoosun masturbates using a dildo and sticks vibrator up her arse but it's not enough to satisfy her. She gets out of her bed to drink some water to be surprised that Yunho is there too. They exchange compliments and she tells him about her situation, so Yunho feels for her and breaks the line between them once again.