私の恥ずかしがり屋の義理の妹は混乱し、偶然にバイアグラを私に与え、私は彼女に絶頂するまで彼女を激しく犯してしまいます。

My pretty stepsister is very distracted and always gets confused about many things, this time I'm sick and she gets confused when giving me medicine and ends up giving me my stepfather's Viagra and I end up fucking her delicious.