Maki Yuuki is 38 years old, a mother of one who works as a sales clerk at a real estate company. Even now, in her 13th year of marriage, she and her husband still have sex and their relationship is good. However, Maki herself says she cannot say she is completely happy. She has only had three sexual partners in her life. Having known almost exclusively sex with her husband, Maki has always harbored an indelible thought: "Would I feel better with another man...?" Every time she felt frustrated by sex that fell just short of a vaginal orgasm, her desire to cheat grew. Whenever she saw actresses losing themselves in pleasure in AV, the question "Could I become like that too?" would arise. To find the answer to that question, she stands on this stage!