After my parents remarried, we went on our first family trip. I ended up sharing a room with my stepsister! She has bad sleeping habits and while asleep, her yukata came undone, revealing her bare breasts and panties! Then she rolled over towards me! Of course, there was no way I could hold back, so I hesitantly started touching her. But as I got into it, I began to roughly grope her, and then my stepsister woke up. I thought I'd get scolded, but instead, she was aroused! What was supposed to be just a light touch turned into her demanding my dick! And then things naturally progressed past the point of no return…
