The busty and slender actress An Mashiro finally appears in the popular series that stimulates the "Spence mammary gland," a woman's new erogenous zone, to drive her to climax! The Spence mammary gland is essentially the G-spot of the breast. Developed by a specialist in mammary gland research, An Mashiro shakes her huge breasts, arches her back, and lifts her hips high! Then, she experiences her first breast orgasm! She feels so much that she reaches a climax and urinates! Please enjoy watching her climax repeatedly through her breasts.