"I never thought that I, an ordinary housewife, would end up in a relationship with my younger brother at this age..." Kurahashi Ayumi (Kana Ai), a woman in her late thirties with two children, started handling household chores for her single, thirty-something nobleman brother Takumi to supplement the family income. However, unbeknownst to her, Takumi had developed a fetish for mature women and harbored secret desires for Ayumi... Driven by alcohol, they ended up in a relationship, and afterward, Takumi continued to pursue her, proposing a casual affair. "For the sake of the household," she said, but the first taste of adultery's pleasure had Ayumi's body drowning in guilty ecstasy...
