Nanase is a married woman living a happy married life. Her mother-in-law wants to see her grandchild, so she has been thinking about having a child. However, her life is about to change completely due to her husband's boss. Taking advantage of his position as her boss, he threatens to fire Nanase, who is upset, and begins to force his penis, which is so swollen that the veins pop out, into her. Having been given pleasure she does not want, Nanase's Kokoro is gradually shaken and her ability to resist gradually weakens...