By chance, the son had been secretly watching his mother’s masturbation every night. Six months ago, he first witnessed his mother’s crotch opening, and since then, he had been peeping from the shadows night after night. As these days passed, impure feelings began to stir within him. Even the sight of his mother doing housework became something special to him. Meanwhile, the mother herself, growing more sexually desirous with age, found it harder to suppress her urges. One day, she began pleasuring herself while whispering her own name. Her sensual body movements made the son breathe even heavier than before, his heart pounding wildly.