SOD has set up a research institute at its headquarters to scientifically test and verify the mysteries and questions about eroticism! Researcher female employees put their bodies up and seriously work on erotic research. The first one is "How to get a lot of sperm at once? ’. Sampling sperm with handjob, titty fuck, intercrural sex, etc. by 3 people, pursuing flight, thickness, taste, and deriving a method to produce a large amount of ejaculation.
