I've been married to my wife Haruka for three years now. Recently, Haruka has been concerned about her figure and has been going to the gym for the past three months. Initially, we went together, but I quit after one week, leaving Haruka as the only one continuing to go. The gym is privately owned, and during training sessions, she's alone with a muscular male trainer. I can't help but feel anxious seeing the distance between my wife and her trainer gradually closing… And as the days go by, seeing my wife's increasing exposure, my suspicions deepened, so I hid a recorder in her bag―.
