JUR-229 I can't tell my wife that I got my mother-in-law pregnant... - On a two-day, one-night

"Yuta, can you abstain from sex for a month until our trip?" I was confused when my parents-in-law suddenly asked me. We were supposed to be just a family trip to a hot spring, but they took advantage of the situation and asked me to make a baby with my wife. I did as they asked and abstained from sex until the day of the trip, but my wife refused... I couldn't control myself, so I headed to the hot spring to calm my pent-up desire, but I accidentally went into the women's bath. There, I witnessed my mother-in-law having a seductive bath...