Eri Nakanishi, aged 38, lives with her husband, who is 12 years older, and their son in a high-rise apartment by the river. Her husband is an accountant, and they met when Eri was his secretary. Although they live comfortably, her husband's work keeps him busy, and they've been sexless for three years. Their child has safely passed into private school and no longer requires much attention. Suddenly finding herself with spare time, she feels lonely when alone. She says that during such times, lewd fantasies begin to grow. But who would have thought that today these fantasies would become reality...
