In this popular series that develops a woman's new erogenous zone, the Spence's gland, Konatsu Kashiwagi appears, who has a young face but is amazing when she takes off her clothes! The Spence's gland is the G-spot of the breast! Developed by a specialist in Spence's gland research, she experiences her first breast orgasm! A series of breast development massages make her squirt and have a convulsive orgasm! During Spence's sex, where her nipples are teased, she feels so much that she can't make a sound and is on the verge of passing out! When her mammary gland is stimulated intensively with a toy, her legs tremble and she urinates a large amount! After being teased for a long time, she arches her back as her nipples are released for sex! She screams! She urinates! A storm of agonizing orgasms!