I am the daughter-in-law who married into this family... My father-in-law is my husband's father. Previously, on a whim, I gave him a stamina enhancer, and seeing him aroused like that excited me even more, so I ended up seducing him... At first, my father-in-law strongly desired me too, but I noticed he started avoiding our relationship when my husband was around, probably out of restraint. To change the mood, our family went on a trip together, and it was during this trip that things took another turn...