Harry lets off some steam (Ass fetishes)

Harry's always had a fantasy, hidden deep down. It started after he saw a slytherin girl do something to hermione.

Thinking about it, harry could adjust the world to his liking, so why not start with hermione. "Hermione, your hair is chestnut brown." He said and like before his friends hair faded Back to its original color.

"Are you alright? You seem to just be stating the obvious for no reason? Did someone hit you with a spell?" She asked, getting concerned.

"No, no just tired. But i think someone hit you with one." He smiled, flexing his slytherin cunning.

"What? What did it do?" She asked in alarm before holding her hands up and feeling up her body.

"Oh, i think its wearing off. Your butt was small before, which is weird considering that almost all that time sitting in the library made it really big. Yep, your butts phat again." His smile never faltered. She stared at him for a moment before she lurked forwards a bit, losing her sense of balance as her ass ballooned outwards. Bigger and bigger and bigger it grew until a RRRRIIIIPPPP! Was heard. Looking down, her pants had torn at the sides as her bubble but was too large to handle for her jeans.

Quickly thinking he cast his wand around them, placing a notice-me-not charm on the corner they were in, hiding them from anyone who might see them.

"Harry, i know my bottom is... quite large, but you dont have to say it like that." She lectured.

"But hermione, you love it when i talk about your arse. I bet its your biggest dream to tell me to play with it, **** it, make it mine." He sajd with his most charming smile.

"Harry!?" She gasped. "H-How did you know that was my biggest fetish and dream?" She asked.

"I know you hermione. All those times you brushed up against me on accident, when your knickers would show on accident every so often. Its only natural that i came to the conclusion that you want to be my ass slut."