Fair-skinned and extremely slender Momo Honda appears in the popular series that develops a woman's new erogenous zone, the Spence's gland! The Spence's gland is the G-spot of the breast! Developed by a specialist in Spence's gland research, she experiences an unprecedented breast orgasm for the first time! A mammary gland development massage that turns tickling into pleasure, and mammary gland stimulation sex that thoroughly teases the nipples! Toys are used on her overly sensitive area, leading to incontinence! A titty fuck makes her feel it and she has an intense orgasm! Nipple teasing sex leads to a fainting orgasm that makes her squirt!