The wife goes on a trip, the husband stays at home having an affair with her sister

My spouse and I have long lost our affection, while I secretly long for my sister-in-law Karen. Due to my busy work schedule and lack of privacy, I haven't seen her for a year. When my wife went on a solo trip, I immediately made plans for Karen to come to the hotel and spent the whole day together. Seeing Karen, I couldn't control my own desires.

We rushed into each other like wild animals, and she even agreed to let me release all the accumulated semen from the past year inside her! From morning till night, and then through the night till morning, we didn't waste a single moment. Even in the end, I ignored having to pick up my wife, leaving her waiting at the train station while I was making love with her sister...