Shiori, a wife who had been living alone, had to move in with her husband's family to care for her ailing father-in-law. She diligently assisted with meals and hygiene, but the aging father, despite the care being given, found himself increasingly invigorated and lustful by the touch of this young and beautiful woman. Seizing an opportunity when his son was away, the father-in-law spread Shiori's legs, buried his face in her pussy, and began licking and sucking at the obscene fluids overflowing from her. He then took advantage of Shiori, who was stifling her moans and trembling with pleasure, and violated her with his revitalized cock... .