Kai Miharu, 29-year-old housewife. Married for five years, she's come to Okutama today with her husband for a camping trip. Planning to stay overnight, she was looking forward to relaxing in nature—but got caught up in an unexpected incident. During the day, while masturbating when no one was around, a delivery arrived. Flustered, she answered the door with her skirt lifted and panties already removed. She still remembers how strangely aroused she felt at that moment. As she's gotten older, her body has grown more sensitive, and she feels her sex drive has actually increased compared to her younger years. Yet, the frequency of sex has decreased, leaving her feeling sexually frustrated lately. She especially likes hard, dark penises and finds the anticipation of seeing one incredibly exciting.