In a certain city in the north Kanto region... Sumire, a faithful housewife in her third year of marriage, lives peacefully with her husband, a hardworking businessman. As the current rental apartment they signed when they first got married is starting to feel a little cramped, Sumire has been looking for a new home and has been spending her weekends looking at various real estate properties in the city. The real estate salesman who was in charge of the property viewing had lewd feelings for the beautiful married woman. One day, while they were looking at the property, where they were basically alone in a closed room, the salesman could no longer bear it...!