Mixed-gender hot spring NTR: Getting his soon-to-be-married girlfriend's friend pregnant... Mizukawa Jun DLDSS-222

I'm dating a girlfriend who isn't conventionally beautiful but has a great personality, and we've recently started thinking about marriage... One day, we went on a hot spring trip with her close friends, a couple. I was immediately captivated by her friend, Run, the first time I saw her. However, after learning that Run was already engaged to her boyfriend, I was heartbroken. That night, after seeing Run's beautiful body in the mixed-gender hot spring, even though I knew it was wrong, I still had sex with her...