When I met my niece for the first time in 7 or 8 years, she had grown into a beautiful young girl! While staying at my house, she clung to me in a defenseless manner, calling out "Uncle, Uncle!" and wouldn't let go. We took baths together, slept together... Then, my niece suddenly said, "I want to have sex with an adult man. Is that okay?... I guess an adult woman is better after all," and I was already erect... I couldn't say anything back, so I just said, "I want to do it too." And then...