Sweet moans come from the next room... I sneak in and see my cute little sister masturbating enthusiastically! I hadn't noticed it before, but before I knew it, I was in a woman's body... She awkwardly plays with her pussy and gradually reaches climax. An older brother feels the sexiness of his defenseless little sister's masturbation... Even though he knows it's wrong, he can't help it and sneaks up on his masturbating sister.