Seven years ago, Ryoka's husband passed away, and she has been working as a cleaner ever since. Tired of her meaningless life, one day she ends up cleaning the home of a young employee at her workplace, Nakano. Since losing her husband, her days off were often boring, and this unusual day made her feel restless. On the other hand, Nakano also had expectations about inviting an adult woman over… That day, their relationship quickly became intimate. After that, they repeatedly engaged in lewd acts within the company during work hours…
