Beautiful and slender Yuki Takeuchi appears in the popular series that develops women's new erogenous zone [Spence mammary gland]! Spence mammary gland is the g-spot of the breasts! A deep breast orgasm experience that makes reason fly away, developed by a specialist in Spence mammary gland research! Arching back and screaming loudly with mammary gland development massage, teasing nipples, hip-swaying squirting Spence sex! Toy torture incontinence with convulsions from the pleasure of the mammary glands! Self-orgasm even with nipple stimulation! In nipple torture-liberated sex, she shows an extraordinary orgasm with screaming ascension!