MEYD-117 Sister-in-law seduces brother-in-law when returning to her husband's parents' house

This wasn't the first time I went to my mother-in-law's house, but I still felt extremely nervous. Coincidentally, the wife and her husband also came to visit. While going to the toilet, I accidentally saw my wife naked. She was really beautiful, her seductive body made me unable to stop thinking about it. The next day, when everyone went out and it was just me and her at home, she seduced me. Even though I knew this was wrong, I couldn't resist her charm. We make love when everyone else is away, and even when my wife is sleeping next to me...