Yoosun shamelessly comes back to the couple's place to fuck Yunho in the woods. Upon seeing her off Yunho jums Yoosun in the car and almost gets caught cheating by his girlfriend.
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.
After Yunho's breaking up with Bora, Yoosun's happier than ever and pounces on her brother in-law. After the sex session, Yoosun wants to sleep with Yunho's dick inside her.
