A first in the popular series that develops a woman's new erogenous zone [Spence's gland]! Tsukinoe Sui, who has already experienced mammary gland orgasm, has arrived! The Spence's gland is the G-spot of the breast! Developed by a specialist in Spence's gland research, it is an incredibly pleasurable breast orgasm experience! [Redeveloped Spence] A mammary gland massage quickly gets her aroused! She arches her back and has a spasming orgasm! She screams and squirts during nipple teasing and Spence sex! She cums with a toy that makes her knees tremble and she urinates! Her breasts are so sensitive that she cums while giving a titjob! Her long-awaited nipple teasing sex leads to an intense squirting orgasm that shows her orgasms like never before!