My wife's younger sister, Maho, came to stay for the first time in a long time. She had recently given birth and seemed happy, but it seems that her husband cheated on her and she ran away. I also had a problem that I couldn't tell anyone about. In fact, we were close even before we got married, and we started committing adultery <behind my wife's back> in order to fill the hole in Kokoro. Maho's body became sensitive right after giving birth, and she orgasmed many times while spraying breast milk, squeezing my crotch...