Rereading the lines for the fourth time, Petra cleared her throat and prepared to make her wish. As her mouth opened she felt a force compel her. Her words are not the ones she intended. No, they were things she would never say aloud.
Secret desires.
Her eyes went wide as the words left her lips, falling out of her like water held in her hands.
"I ... wish ... I ... was ... a ... catgirl ..."
The words were plucked out of her by the book. She was fully aware, but it sounded like she was in a trance.
People knew Petra loved cats, and a few had even seen her collection of art related to catgirls. But not a soul knew she wished to be one. She had always wanted to have a long fluffy tail and pointed ears covered in fur. She wanted to wear a collar with her name on it and to be able to purr. These were thoughts Petra had late at night when she was alone. Or when she browsed her computer and had a level of anonymity. It was never something she would say out loud, where other people could hear.
The words had been spoken though. They had left her lips, not of her brains accord, but from her heart. And as hard as she tried to be upset by it, all Petra felt was joy, a childish glee like Christmas morning.
The book was hot to the touch, its' pages luminous even in the bright sterile light of the library. Petra felt her skin buzz as energy flowed up her arms and down her body, emanating from a book she couldn't let go of if she wanted to.
Her hair stood up. The electric rush sent shivers down her spine. Petra felt it twitch and arch oddly. Her arms felt like she was holding live wires, the electric tingle keeping her hands immobile. She watched as more and more hairs seemed to sprout from her forearms, growing into a thin layer of fluffy orange brown fur. The electricity continued to flow up her arms, traveling up until her head buzzed fiercely. She felt a pinching feeling, like someone had hold of her ears. If she had been able to let go of the book Petra surely would have felt their strange pointed shape and angle as they shifted up her head. The ears were lightly furred like her arm now. The two orange pointed shapes parting her long blonde hair looked just like those of a cat.
Petra could feel it, feel herself actually turning into a cat ... a catgirl, just like the ones she liked to look at.
A rush of emotions filled her. She could feel the start of a small tail lifting her skirt up and Petra cursed herself for not wearing panties today. She had a tail...
It ... was awesome.
Petra didn't care if anyone saw, if everyone knew she was into catgirls. She didn't even care that they would easily see her ass and maybe even her pussy at the right angle. The further the changes went the more excited Petra was … and the more she tried to will them on! Petra wished she could run her hands down her furry thighs, wished she could tug on the fluffy tail that was growing longer by the second, wished she could grip her thick ass and -
Petra realized her hips and ass were swelling, growing more pronounced until her skirt was a little tight around her waist. It covered even less now, but she didn't care. Her butt felt so large, so plush. She could only imagine how much it would jiggle when she moved and the thought made her wish her hands were free even more. If only she could let go of the book for a moment she could take care of the building heat that was distracting her from just how good it felt to have the magic inside her.
It felt so good that Petra was worried she was going to cause a scene if it went on any longer. She wasn't sure how long she could resist how good it felt without succumbing to pleasure.
The magic energy seemed to sputter and wane. The warm pleasure became a dull glow. Even though she didn't want it to turn her all the way into a cat, Petra missed the feeling of the book's power.
Her hands suddenly came free and she stumbled back, leaning against a nearby table for support. Her breath was ragged and she couldn't help but give a grin that exposed pointed teeth.
Petra couldn't believe it. She really was a cat ... a catgirl, with a rather thick backside. She rubbed her ass, feeling how big and soft it was, light fur dusting its' sides. She could hardly believe that she was out in public, looking as feline as she did human, and rubbing her thick cheeks.
But it was real ... and it felt great...