I'm not good-looking, but I was dating a girl with a great personality and had started to think about marriage... One day, we went on a hot spring trip with her best friend couple. The first time I met her best friend Yuna, I fell for her at first sight. However, when I found out that Yuna was engaged to her boyfriend, I was heartbroken. That night, seeing Yuna's beautiful body in the mixed-gender hot spring, I forcefully had a relationship with her despite knowing it was wrong...
