When I met my niece for the first time in a while, she had the body of a fully grown woman! But inside, she's still a child, and she unconsciously flashes her panties and breasts without any warning, so of course I got an erection! When I found out, my niece came to me for advice about her sex problems, and when I was surprised to hear that she had experience, she said, "I might be insensitive! Touch me and see for yourself!", which turned into a lucky turn of events! She showed off her AV knowledge by imitating others, and when I fingered her, my niece was so excited that she almost fainted from her first squirting! Far from being insensitive, she had an ultra-sensitive body!