Menoh, who had been married for 12 years, was living a plain but happy daily life surrounded by her family. She attended a class reunion after 20 years and reunited with her ex-boyfriend Takeda there. Takeda was a man who ended things poorly and irresponsibly with women. However, Takeda had also grown up, and as they reminisced, they missed the last train and ended up spending the night in a hotel. Takeda knew Menoh's body intimately and had improved his techniques, making her climax repeatedly and reigniting their past passion…
