Last year, Sayaka remarried a male massage therapist. Ever since they started dating, whenever the man stayed over, he would ask Sayaka to give him a massage. Their son noticed this and gradually began sneaking peeks during these massage sessions. He witnessed Sayaka moaning shamelessly, and the sight captivated him completely. From then on, whenever he heard the word "massage," he couldn't resist peeking. One day, when her husband had to stay overnight for work, Sayaka was left alone with her son. The son, feeling lonely as if his stepfather had taken his mother away, sought comfort from Sayaka—and ultimately ended up pushing her down...