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New The Science Encyclopedia Series of Girls 1: Study of the Female Reproductive Organs Who's the JAV actress in this video? Amateur? Name revealed!

Sanwa Publishing presents a deep scientific exploration into the mysteries hidden within the depths of the female genitalia. Using thermographic cameras, this film visualizes and meticulously analyzes the body's temperature changes during pleasure, revealing the true nature of female orgasm through physiological indicators such as pulse, blood pressure, and vaginal pH levels. Surprising facts also emerge regarding the relationship between the quality of sexual pleasure, body positions, and vaginal depth. An intellectually stimulating, scientifically backed visual journey uncovering the profound wonders of the female body. From Sanwa Publishing's The Science Encyclopedia Series of Girls.