Misuzu, a married woman, found herself unable to refuse a furniture salesman she had once been classmates with. One day, they coincidentally met again, and shortly after, he visited the Natsukawa household on a sales call. Upon arriving, he caught sight of Misuzu pleasuring herself. Overcome with desire, he lost control and violently assaulted her, subjecting her to intense humiliation. From that moment on, he manipulated her into buying various furniture pieces, treating her like his personal sex toy. Gradually, Misuzu began to accept this sexual degradation, seeking out new forms of pleasure within her submission. Her transformation becomes a central element driving the story deeper into obsession and depravity.