Her daughter brought her boyfriend home. Kaori, while blessing the couple, decides to give the young man a stern talking-to as a mother. "Make sure to use protection," she says, which is perfectly normal parental advice. However, Kaori, who has a penchant for innocent boys, gradually crosses the line from motherly concern. "Haven't you slept with my daughter yet? Are you still a virgin?" The boyfriend, caught off guard, starts to panic. Kaori's arousal intensifies with his innocent reaction, and she can no longer contain her desires...