Three years into their marriage, the Sasaki couple have finally bought their dream home, with the husband's career going well. Sakuya, the wife, is also feeling happy and is working hard to have a child with her husband. But then her husband becomes a candidate for restructuring... Then, Sagawa, the president of one of her husband's clients, introduces her to a job and she agrees to work there, but the wicked Sagawa sets her up... Her downfall begins suddenly. She is humiliated every day as milky liquid is poured into the depths of her vagina. As Sakuya's body continues to be developed, it is increasingly stained with extraordinary pleasure...