In this edition of the SOD Sex Science Lab, the diligent female employee Natsumi Kotohara will be testing out "what happens if you keep leaking bodily fluids from your entire body?" Kotohara is petite at 145cm tall, but has an excellent metabolism, so she orgasms over and over again with the latest equipment, squirting everywhere. During the deep throating session, she leaks thick vomit and has a look of pleasure on her face. Afterwards, she comments, "It was the most pleasurable feeling of my life," and the test was a success.