Description
We've been good friends since we were little. One day, I bumped into my sister on the school bus! The crowded bus shook violently, and my sister was pushed against the wall! Then, other passengers pushed me, and our faces and bodies were pressed against each other! Even though we're brother and sister, I got an erection! Of course, my sister noticed my erection, and this was bad...! I was panicking, but it seemed like my sister was also in heat, so I just left it like that...