陸上部の遠征で東京に来た姪っ子をしばらく預かることになった。久しぶりに会った姪っ子はポニーテールの似合う美少女に成長していた。姪っ子にランニングしてもらうと陸上で鍛えている太ももにち○ぽが思わずムラついてしまった。我慢できず飛びついてレーシングブルマをズラして即ハメ！すると、いきなりのデカチン挿入に戸惑っていた姪っ子がビシャーッと即潮射！未発達のおま○こが敏感すぎてお漏らしが止まらなくなった！お漏らしおま○こにたまらず中出し！笑顔で中年デカち○ぽを受け入れてくれるJ系姪っ子にどハマりしてしまった。

I was asked to look after my niece for a while as she was in Tokyo for a track and field club trip. It had been a while since I'd seen her, and she had grown into a beautiful girl with a ponytail that suited her well. When I asked my niece to run, her thighs, toned from track and field training, made my dick instantly hard. Unable to control myself, I jumped on her, pulled down her racing shorts, and immediately fucked her! To my surprise, my niece was taken aback by the sudden insertion of my huge cock and immediately squirted! Her underdeveloped pussy was so sensitive that she couldn't stop wetting herself! Unable to resist, I cummed inside her wet pussy! I was completely hooked on my J-pop idol niece who accepted my big middle-aged cock with a smile.