NTRD-124 The adult-oriented tutor wife who was raped by an old man while sleeping, Tsuzuki Ruisa

I got married to my wife three years ago. My income was stable, so I had her become a full-time housewife without hesitation.
However, since we weren't blessed with children, my wife had too much time on her hands. It was then that she found the job of "adult home tutor." Since my wife had been a cram school teacher before marriage, she decided to try out this "adult home tutoring" job. Normally, one would go to the student's house, but because she didn't want her grandson to see her teaching, it was decided that she would do the tutoring at our house.
The person who showed up was a seemingly kind old man past his seventies. He was polite, humble, and most of all, he was serious about studying, which made my wife find fulfillment in her tutoring job.
One day, while such days were continuing, I witnessed an unbelievable scene.
That is… the polite, humble, and serious old man past his seventies and my wife were naked and embracing each other…