Unsatisfied with her emotionless husband, Miku found herself unfulfilled in daily life and began secretly indulging in nightly masturbation to soothe her desires. One day, her nephew Kazuya accidentally stumbled upon her in the act, shocked by the raw, unveiled passion he witnessed. Rather than retreat, Miku boldly seduced him, initiating a forbidden relationship. Driven by escalating lust, she continued pleasuring herself, consciously aware that her other nephew, Shosuke, might be watching. That night, she lured Shosuke into her room, pushing their intimate connection to new, illicit heights.