Kanaho and Ichiro, who had been dating since their student days. They got married the year before last and continued to show an unchanging harmony... but this summer, Ichiro's infidelity was exposed. With childbearing also not going well, Kanaho hit rock bottom. Just then, Ichiro's father, Tooru, decided to stay at their house on a business trip to Tokyo. Having been kind to her since they were in the same hometown, Kanaho found herself drawn to her father-in-law. Before she knew it, Kanaho realized that she had been subtly seducing Tooru and made up her mind to go to his house...
