Seung-Jo Cha is at So-Hee house to eat watermelon, being invited by her husband.
On way back to his lodging he got hold of Yeong-Suk & pushes her for sex in the alley, Sashimi worker is watching them.
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.
Taesung recalls memories of the past month that's been full of uncontrollable sex. He proceeds to play with her body while she's sleeping. He simulates her into waking up and having morning sex.
