私の義理の妹は、私が家にいないという事実を利用して、服を着て、私が彼女に与えた贈り物で自慰行為をします。

My little and beautiful stepsister takes advantage of the fact that I am not at home to wear my clothes, she always does it without permission and gets very horny, she ends up masturbating with the present that I had given her for her birthday.