The thrill of an immediate divorce after being discovered by her perfectly compatible husband next door is so exhilarating, she can't stop. Deep kisses between married people, incestuous sex, Hayama Sayuri NGOD-358

In a secondhand family apartment building in a city in the Kanto region, live the "Hayama couple" and the "Hoshino couple" on the same floor. Both families have been married for five years and have children. The husbands are salarymen, and the wives are part-time housewives. They are also around the same age, so the two families often visit each other. However, there is a secret that "Hayama's wife, Sayuri," and "Hoshino's husband, Akira," must never tell. In fact, these two married people living in the same apartment building have fallen into a forbidden, illicit relationship.