Married woman in the opposite room

Akira is unable to fit in the workplace where she got a job, and is now working part-time as a food delivery worker. The delivery destination is Kobayakawa's house, and there is a beautiful married woman, Reiko, and Akira is excited every time she delivers it. And, Akira lives across from the apartment building where Reiko lives, and Reiko's defenseless daily life can be seen through the window. One day, when Reiko saves her husband's boss and she is about to be raped in her room, the distance between Reiko and Akira is getting closer...