My wife's younger sister, Maho, came to stay for the first time in a while. She had recently given birth and seemed happy, but it turns out her husband cheated on her and she ran away. I also had my own troubles that I couldn't tell anyone about. We were close even before we got married, and we started having repeated affairs behind my wife's back, trying to fill the hole in my heart. Maho's body, now sensitive after giving birth, was so sensitive that she couldn't stop drinking breast milk...