The popular series that develops a woman's new erogenous zone, the "Spence Gland," features Konatsu Kashiwagi, who looks young but has an amazing body! The Spence Gland is the G-spot of the breasts! Undergoing development by a specialist in Spence Gland research, she experiences her first breast orgasm! Multiple gland development massages lead to intense climaxes with squirting and spasms! During Spence sex, where her nipples are teased, she feels so much that she's on the verge of fainting! Concentrated stimulation of her glands with toys causes her legs to shake uncontrollably while she has a massive orgasm! After continuous nipple teasing, she climaxes with a loud scream and incontinence! A storm of intense orgasms!