Due to debt, her husband suddenly left home. Having lost everything and with no hope for the future, Reiko was saved by Koichi, her husband's friend, who, still grieving the loss of his own wife, took her in as a live-in housekeeper. Years passed, and Reiko grew comfortable with her duties, living a stable and fulfilling daily life. One day, she accidentally ruined something precious belonging to the master's son, Hajime. Enraged, Hajime suddenly barked an order at her: "Hand over your most treasured underwear!" Trembling in fear, Reiko quivered all over, yet obeyed Hajime's demand. In that moment, an intense fire of desire ignited within Hajime, focused entirely on Reiko's body, as he sought to satisfy his lust without restraint.