After many years of marriage, my relationship with my wife is now very cold. My wife doesn't do housework, always talking about money, while I just focus on making money and returning to a cold home. My dull life was brightened by a very beautiful woman. Koyoi is my business partner, a beautiful, gentle, and kind person. After my company's evaluation was approved, Koyoi invited me for a drink. While drinking, I received a message from my wife. Seeing that I was not feeling well, Koyoi wanted to share her feelings with me. We talked so much that we forgot about the time, and when we looked at the clock, the last train had already departed. I took Koyoi home in a taxi, but on the way, she wanted to continue drinking and invited me to a place where we could rest. And that "place" here is a hotel!