The Cunning Mother and the Cunning Wife

I was born in a small mountain village in the south where fertility worship is practiced. But I haven't been very good at something for more than ten years. My parents were eager to help me find a wife, so they were so sick that they went to the doctor and asked the village goddess to arrange a marriage for me. Unexpectedly, the woman turned out to be very beautiful, and my body seemed to be recovering. But that girl was a fool, with a dull expression. After dating her, weird things started happening around me, and I realized that everything was not that simple...