After a long time, my wife's sister "Maho" came to stay over. I thought she seemed happy after giving birth recently, but it seems she ran away from home after her husband cheated on her. And I, on my own, had troubles I couldn't tell anyone about. Actually, even before we got married, we, who were close, started to repeatedly commit adultery <stealing glances at my wife> as if filling a gaping hole in our hearts. Maho's body, sensitive right after giving birth, climaxed violently many times while spraying breast milk, squeezing my crotch...