In this popular series that develops a woman's new erogenous zone, the Spence gland, Fumika Nakayama, a busty H-cup girl who has been ripe since her days as a child actress, appears! The Spence gland is the G-spot of the breast! Developed by a specialist in Spence gland research, it brings you an incredible pleasure of breast orgasms! Massage sex develops the Spence gland, making her huge breasts tremble and spasm in ecstasy! Nipple teasing and Spence sex make her huge breasts go wild and she screams and squirts! Toys that persistently stimulate the mammary gland bring her to continuous spasm orgasms! Her breasts are so sensitive that she can even cum from a titty fuck! Three long-awaited nipple teasing sex scenes where she is drowning in pleasure so great she loses consciousness!