Eriko ended up having a physical relationship with her son, who was stressed out over his entrance exam to a prestigious school. Her body was filled with a hard penis unlike her husband's, but at the same time she felt guilty. Meanwhile, rumors of this immoral relationship began to spread at her son's school. Shocked, Eriko immediately tried to put an end to this rotten relationship, but... She couldn't stop the throbbing in her body, tamed by pleasure. "Today's the end... so please!" The forbidden relationship was about to come to an end.