Matsushita Saeko has been married for 3 years but monotony starts to kick in. She then takes a part-time job at a convenience store, where she meets with Yamazaki, one of his male coworkers.
Yamazaki has noticed Saeko and his desire starts growing. One night while the workers of the convenience store go out drinking, Yamazaki jumps on Saeko and they begin an affair.
As a final note, I loved that blowjob that begins at minute 00:34:30… man, if only that wasn’t destroyed by the mosaic. Even the shot in the face was quite lovely. Saeko is just great.