JUL-778 I couldn't tell my wife even if my mouth split open, I got her mother pregnant... During a one-night two-day hot spring trip, I kept forgetting myself and came inside. - Koizumi Rui

After marriage, I had grown distant from my wife's parents. This time, I came on a hot spring trip at their invitation. On the surface, it was a family-only trip, but in reality, it was a baby-making trip where my father-in-law ordered me to abstain for a month leading up to the trip. Just brushing past my mother-in-law after a bath made me erect to the point of no return. However, my wife was so engrossed in the hot spring that she wouldn't let me touch her at all. I ended up spending a restless night. Trying to calm my sexual desires, as I walked around the inn, I happened to catch a glimpse of my mother-in-law bathing…