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.
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.
Ga-yung takes Kyung-Ho with her to see something interesting...it's a couple fucking outdoor. They get her all fired up and so she initiates the sex despite Kyung-Ho not being comfortable doing it outside.
After nude modeling for Professor Cha, Kyung-Ho and Bora dine together. They later go to her place and after chit-chatting for a while, they get horny and have sex.
Ga-yung's laptop broke down, she wants Kyung-Ho to fix it, but it's not only the laptop that she wants fixed as they fuck in the practice room at night. but they aren't at it for so long as they get interrupted by Seung-ah.
Seung-Ah lists the good things about Kyung-Ho ...it's only his big dick. Instead of feeling bad he gets horny and talks his way into having sex with her again.
After fucking Ga-yung, Kyung-ho gets out to get some fresh air where he runs into Seung-ah. Thet chit chat a bit but they horny super quick & fuck in the open.