Natalie attacks!

The skin in Aaron's hands suddenly came to life, leaping at him and crawling across his naked body.

Aaron struggled against it, but couldn't get a proper grip on its elastic surface. He saw it surface rippling as it oriented itself on top of him before rearing up, the gaping hole he had cut in its surface looming over him like a mouth. It descended, engulfing him in darkness as his limbs were **** into their corresponding sleeves, the transformation he had been looking forward to now forcing itself upon him.

He felt his muscles shrink, his waist pinch and a squirming sensation at his crotch as his cock and balls vanished inside his body to be replaced by a moist, warm pussy. He felt his breasts grow out to fill the empty sacks on the skin's chest, the sudden rush of sensation leaving him short of breath.

As his body finally settled into its new form, Aaron felt his fingers flexing against his will. Light burst into his vision as his eyes were **** open and his body gasped air as though for the first time. It staggered to its feet, boobs jiggling disconcertingly and lurched to the bedroom mirror.

Natalie stared back at herself, her face a mask of concentration as she steadily regained control of the mass she had stolen.

"Aaron," she rasped. "You fucking freak, what the fuck did you do to me."

Aaron hoped that she wouldn't realise he was inside her, but became terrified when he felt a presence rummaging around in his mind. Through his sisters eyes, he saw her expression melt into one of gloating cruelty.

"Oh? So you thought you could just steal my body, did you? Using this," she said, hefting the multitool in one hand.

Aaron felt her in his mind again, stealing his thoughts.

"Well, well, well. You are a freak, I fucking knew it. Well I hope you're happy where you are. Actually..."

Natalie paused, eyes raised in silent contemplation.

"No. I don't hope you're happy. I hope you're miserable. In fact, I'm going to make sure of it."