Anna couldn't believe her luck. Her step-sister Cassie was having a hard time finding someone to watch their stepsiblings while their parents were out of town. Anna volunteered without hesitation, knowing full well what she wanted from this arrangement.
As soon as the door shut behind the young couple, Anna was on Cassie. She kissed her deeply, feeling her stepsister's supple body against her own. Cassie moaned as Anna undressed her, her fingers tracing the contours of Anna's body.
Anna pushed Cassie onto the bed and climbed on top of her, grinding her hips against Cassie's soft pussy. Cassie arched her back, begging for more. Anna loved the power she held over her sister. She reached between their bodies and rubbed Cassie's clit, watching as her sister's breathing grew ragged.
