A change of position

Emma had to say she wasn't entirely pleased with her sister's current position. While it presented a great view of her naked body, and allowed for easy access to play with her pussy, it was somehow unsatisfactory for taking her.

Emma herself had always been a fan of doing it doggystyle, though she knew a lot of other women prefered the missionary, as it allowed her to easily pleasusre herself while taking it at full speed from behind. Also, her own body might pose a problem if doing it missionary, as her sister would likely notice her boobs at some point - which were clearly not Jeff's.

So while Hannah was still weakened after her powerful climaxes, Emma untied the silky ropes that held her wrists to the bedposts and managed to roll her onto her side, before quick and roughly tying her hands behind her back instead. Then she moved on to the feet, before her sister could muster her strength, and pulled the girl way down until her hips rested at the very edge of the bed and her ankles could be spread wide again and tied to the legs of the bed.

Satisfied with her work, she stood back up again and admired her sister's tight little ass. Only a tiny detail was missing, and by sticking a pillow under Hannah's waist she had that lovely bum sticking up in the air while forcing the girl up on her toes to reach the ground.

"Now then..." She grinned to herself, while having another few strokes of her cock as she moved in on her sister's behind. "Where to start...?"