"Hey Tsubasa... what about kids?" I didn't know how to answer my father-in-law's question with a sullen look on his face. My wife and I want to have kids, but we both work and can't make it work. Then my father-in-law suggested we go on a family trip to a hot spring resort. The goal is to have a baby on the trip, and on top of that, we're going to have to abstain from sex for a month... But my wife is so excited on the trip that she's not in the mood to have a baby. I thought I'd take a bath to calm myself down, but by chance I witnessed my mother-in-law having a seductive bath...