Bred My Virgin Sister After I Saved Her From A Mountain Lion: Brothers Breeding Sisters 30

My sister and I were pretty much camping virgins. Well as I discovered that weekend, my sister was an actual virgin too. Things started off pretty normally until one afternoon she was attacked by a mountain lion! I scared it off and she was unharmed, though her clothes were all torn up. Adrenaline was pumping through both of us, and she was so grateful that I saved her. Very grateful indeed.