"Kenichi-kun, please...can you abstain from sex for a month until our trip?" I was confused when my father-in-law suddenly asked me. We were supposed to be on a family trip to a hot spring, but he took advantage of the situation and asked me to make a baby with my wife. However, my wife has no interest in having a baby, and no matter how many times I ask her, she refuses...and I end up getting drunk. Feeling tormented and unable to sleep after my abstinence, I wander around the inn late at night trying to distract myself, when I happen to see my mother-in-law taking a bath...