This is a story about a wife who wants to have raw sex.
Yuri Sasahara and her husband remarried and get along well, their sex life is also compatible. However, she's been building up resentment towards the contraceptive sex they have because her husband doesn't want to have children.
Yuri herself didn't necessarily want children, she just craved the feeling of raw sex.
She met the Uematsu couple at a women's association gathering and they became close friends, drinking together as families. One night, fueled by alcohol, her husband made a lighthearted joke that sparked an affair.
Tom Uematsu also agreed with Yuri's preference for raw sex, and they developed a forbidden relationship. However, their affair was eventually discovered by her husband... Witnessing his wife being taken and climaxed by another man, he became captivated by her new side and developed a desire to take her himself.