Kaoru married Ichiro, a colleague from work, in their later years. Ichiro had a reclusive son, Hanzo, and his reason for remarrying was to find someone to care for Hanzo. As expected, Hanzo lived a pampered life, believing Kaoru to be his real mother. One day, Hanzo began pleading with Kaoru, saying he wanted a sibling. When Hanzo learned that Kaoru was nearing menopause, he became consumed with anxiety and finally took action to try and impregnate her himself...