The super slim I-cup Asuka Aida makes her debut in this popular series that stimulates a woman's new erogenous zone, the Spence gland, and makes her cum! The Spence gland is like the G-spot of the breast. The Spence gland is forcibly stimulated with a Spence gland development device, making her drool and squirt a lot! Developed by a specialist in breast research, this is the first time she has ever cummed from her breasts! Spence caressing sex, a special Spence stimulation machine that makes her pee and climax, and a super sensitive titty fuck! A national treasure-class body that arches its back and squirts to a massive climax!