I stumble upon my stepsister's arousal in her bedroom and climax inside her entire photo collection

I was walking around the house when I suddenly stumbled upon my stepsister in her bedroom. She was all alone, and it seemed like she was really into something. She was touching herself all over, and I couldn't help but get turned on by it. I decided to join in on her fun and started to stroke my hard cock while she continued to pleasure herself. She was moaning and writhing in pleasure as I fucked her with my hand. When I finally came, I shot my load all over her photo collection. It was a sight to behold as she was covered in my sticky cum. This was definitely one of the hottest moments I've ever had with my stepsister.