I am the wife who married into this family... and this man is my husband's father... yes, my father-in-law... I once gave my father-in-law an aphrodisiac on a whim... and when I saw my father-in-law's horny body, I got excited and ended up seducing him... At first, my father-in-law also wanted me intensely, but it seemed like he was avoiding me out of consideration for my husband... so I came on a family trip to change my mood...