In this popular series that develops a woman's new erogenous zone, the Spence gland , Mary Tachibana, a fair-skinned beauty with large breasts, appears! The Spence gland is the G-spot of the breast! Developed by a specialist in Spence gland research, she experiences her first shocking breast orgasm! A gland development massage makes her arch her back and she squirts to orgasm, and her nipples are teased and she drools as she feels pleasure during Spence stimulation sex! A variety of toys are used to thoroughly stimulate the glands, leading to massive incontinence! She even gets a titty fuck and reaches a self-climax! Her long-awaited nipple stimulation brings her to a screaming orgasm!