Thanks to my in-laws' generosity, I came on a hot spring trip with the whole family. Having started abstaining for the sake of having children a month ago, I had decided today was the day to have sex with my wife, but unfortunately, she was on her period and I couldn't hold back my rising sexual desire. Moreover, I finished three servings of the famous unagi dish at this inn, and even without touching it, my crotch was rock hard. To cool it down a bit, I headed to the bath, but there I saw my mother-in-law's seductive bathing figure...
