Reina Ishizaki feels her breasts have lost sensitivity, so the “Spence-tail gland,” described as the breast’s G-spot, is trained. Her enormous bust is first gripped and massaged firmly, then stroked gently with lotion until lewd moans escape. Soon the pressure of a cock against the gland alone makes her climax. She comes during a titjob, then receives penetration while the breast spot is stimulated, arching into repeated orgasms. By the end, merely jiggling her breasts makes her come.