When I was busy at work, I asked the office worker, Kijima, to do the tedious work. She's unassuming, unobtrusive, and not easily persuaded, so she's never refused. Today, I made her help me until late, so I thought I'd show her some gratitude and invited her out for a drink. Kijima seemed to be harboring a lot of frustration towards her husband... I saw an opening. I was getting aroused, so I invited her over while drunk. To my surprise, she said yes. From that day on, we were immersed in a relationship of convenience.