After having sex in the empty classroom during lunch time, the siblings came back to the lecture hall & Taesung started fingering his sister during lecture. He made her so horny that she had them hurry back home to fuck where Haeun grants her brother his wish of fucking her backdoor for the 1st time in her life.
Mrs. Lee Sohee is a bitch in heat and can't focus on her works. So, she initiates contact with Do-hoon in the workplace. He teases her into being more honest and demanding and so she confesses that she wants his dick. MC then demands that they do it at her place promising he'll do it once Like his boss asked him too. Fast forward, they're at her place in her own room, the two enjoy a very steamy sex session that had So-hee asking for more rounds even with her own daughter around. After the long session, Mc teases his boss by rubbing his feet on her pussy under the dinner table.
While still at the business trip, Do-hoon comes over to Dasom's hotel room and have his way with her and she doesn't stop him (because she already fantasized about doing it with him) and also because she initiated it by kissing him in the bathroom in a work dinner.
