NPH-233 Forbidden sexual intercourse with a stepplay during a hot spring trip - Mei Mitsuki

I went on a hot spring trip with my remarried wife and her children. I ended up alone in the room with one of her children, and as she was giving me a massage, my dick got hard again. She put it in her mouth. To avoid being found out by my wife and son, we secretly went to the hot springs together, and I had sex with my stepdaughter in the bath where no one was around.