Haru Shibasaki, a member of the product development division who has previously focused on researching and creating masturbation aids for men, has been tasked by her supervisor with researching new products—specifically, sex toys designed for women. She gathers a variety of items—such as bullet vibrators, electric massagers, standard vibrators, and dildos—and begins testing them on herself. As she continues, the physical pleasure gradually begins to take over, and…