Enkō kyōyō: Ochita hitozuma

Aoi, a wife, is busy saving money with the goal of buying a home with her husband, Shuji. However, she is having an affair with Maeda, the manager of the store where she works part-time. On the way home from a tryst, Aoi and Maeda are approached by a drunk woman. A few days later, the woman who moved in next door comes to say hello, but it is the same drunk woman from before...