[Reducing Mosaic]JUY-928 I can't tell my wife no matter what, I got her mother pregnant... During a one-night two-day hot spring trip, I lost myself and kept cumming inside. - Hōjō Maki

"There's a hot spring that's great for making babies. Want to go together?" After being invited by my father-in-law, the whole family of four came on a hot spring trip. Feeling the pressure from my father-in-law who wants to see his grandchild's face soon, I had been diligently storing up sperm for conception. However, due to an unexpected argument with my wife, making babies became the last thing on my mind. Spending sleepless nights in frustration due to abstinence, I happened to catch a glimpse of my mother-in-law bathing…