63-year-old Kazuko Funaki is a woman who has been forced into an 18-year sexless marriage due to child-rearing and work. One day, a man approached her at a restaurant, and though they attempted to begin an affair—the first in her life—they failed to become aroused, remaining dry and limp, and ultimately only engaging in petting without progressing further. However, after that encounter, the long-forgotten awareness of herself as a "woman" began to reawaken, and despite being post-menopausal, she decided she wanted to open her pussy again, leading her to apply for this project. Due to nervousness and years of inactivity, Kazuko struggles to get wet. After careful and persistent stimulation, she finally begins to let out soft moans. Then, seizing the moment, a sex toy is introduced, bringing entirely new sensations.