"We're brother and sister, so we'll only rub it." For the past 10 years, my sister, who is too kind to me, a shut-in NEET, has been helping me with my sexual needs on the condition that I only do intercrural sex. One day, she doesn't say anything even when I insert the tip 2cm into her dripping wet pussy... so we end up having incestuous creampie sex. Amamiya Kanan