The son saw it… every night, his beautiful mother's crotch open in the darkness…!! It was a masturbation act that his mother had performed half a year ago. Since then, the son has been secretly watching his mother's nightly self-pleasure from the shadows. Because of this nightly peeping, he developed sexual feelings towards his mother while she was doing housework. And as his mother aged, she could no longer suppress her growing libido… One incident triggered it; his mother began masturbating while whispering his name. The son's breath grew heavier than ever at the sight of his mother's voluptuous body...
