While I was on a business trip, my return flight was cancelled and I was at a loss as to what to do, when suddenly, a beautiful flight attendant called out to me, and it turned out to be Tsumugi, a plain housewife from the neighborhood... It was the first time we had a proper conversation, but I hit it off with her because she was friendly and a good talker, and in the heat of the moment we got drunk we started a relationship. It would have been fine if it had been just a one-time thing, but as we kept doing the slightly abnormal things that I couldn't do with my wife, only on business trips, we got deeper and deeper into each other...