The key
“February 27th
Just as I imagined. My wife keeps a diary. To this day I took the precaution of not writing it in this notebook, but actually my attention was vaguely grabbed a few days ago.
… I am not so vile as to read the diary of my own wife without her permission. However, driven by bad feelings, I tried to cunningly remove the tape that sealed it so as to leave no marks. I wanted to show my wife that a tape alone would be useless.
…
March 7th…
Then I found the key lying in the same place. I thought there must be some reason, and then I opened the drawer and pulled out my husband’s diary. To my surprise, it was sealed with a tape in the same way as I had done. Would my husband want to tell me “Try opening it”?
… I was tempted to try to pull the tape without leaving marks. And so I did it, simply out of curiosity”