Chisato Shoda eagerly anticipated the return of her husband, a banker who had been on a solo work assignment. However, his return was delayed due to work-related troubles, and upon learning the details, she discovered he had lost influence after losing an internal power struggle with colleagues. Realizing this, Chisato invited Oikawa, her husband's subordinate belonging to a rival faction, to her home. Surprised and nervous at the sudden invitation, Oikawa was met with Chisato's seductive advances, using her mature allure to successfully win his loyalty. Yet, she remains wary of the movements of another subordinate, Kishikawa.