Aoi, who lost her husband and raised her only son Takahiro on her own, was unable to earn enough money and had to surrender her body to her boss, Onuki, to cover her living expenses. However, the perverted Onuki is not satisfied with just hugging her, and begins to take an interest in her butthole. In order to keep her alive, Aoi continues to have her anal groped every day as she is told. And at last the anal virginity is taken away, and it reaches the climax in her ignorance. Seeing this, Onuki seeks further excitement and comes up with a plan...
