義理の妹は私が自慰行為をしているのを見つけましたが、彼女はとてもムラムラしていたので、私をイカせるまで私のチンポをしゃぶっていました

My stepsister sees me masturbating, apparently that made her very horny, because instead of giving me away, she helps me with my happy ending. She gives me the best cock sucking I've ever had and manages to make me cum very delicious.