Yuta is a university student looking for a property to move to near his school. This old apartment was the seventh place he came across, and although it was sunny, the rooms were small and he wasn't sure what to look for. However, when Yuta looked out the window, his eyes were glued to it. From the window, he could see the beautiful married woman Aoi, defenselessly cleaning in her loungewear, in the room opposite. He quickly decided on the room, and it became a daily routine for him to spy on Aoi. He never imagined that he would actually have an indecent relationship with Aoi...