Adult-FanFiction.org : Harry Potter

A Changing World	By : greenroses Category: Harry Potter > Het - Male/Female Views: 9573 -:- Recommendations : 0 -:- Currently Reading : 1
Disclaimer: I do not own Harry Potter or any of the characters created by JK Rowling. No profit is being made from this story.

Chapter List
- 1-Chapter 1
- 2-Chapter 2
- 1
- 2
Sneaking off with Daphne Greengrass was very easy and very enjoyable. They did their Prefect’s rounds together and every single time when they were done, they found a hidden broom closet to snog in. The first time, he heavily petted her and they kissed. The second time, he convinced her to let him see her all naked and played with her tits. By the third time, he persuaded her to suck his cock.
He wasn’t making much progress with Penelope and though he loved a challenge, he was finding breaking into Daphne was much more satisfying. She was more eager to please him and this is what he wanted from Penelope. To be honest, Penelope was now starting to get on his nerves.
Granger was always fun to tease as well. She was the only other student in their year who matched his intellect but even that was just barely. She won’t ever be smarter than him or better than him. And he really wanted to get her on her knees for him too.
Slughorn did a lot more demonstrations this year for their OWLs. He would ask them to come to the front of the class to watch him brew and since Granger sat at the very front she didn’t need to move. Tom would make sure he stood directly behind her and then shuffle closer to ‘see better’. He would press his semi-hard cock right against her bum. The first few times she squeaked in surprise and glanced back at him with wide-eyes but he never acknowledged her and acted as if nothing was wrong. There would be nowhere for her to move since she was pressed up right against the edge of her desk. Soon, she came to expect it.
Now when he presses up behind her intimately, she knows to expect it and doesn’t resist or move away. In fact, a few times she even pressed her bum back against him. In those situations, Tom would smirk. A few times he grinded against her once or twice, not enough to gather attention, but enough for her to know that he was aware and he was doing this on purpose.
One night, he caught her in the library just before it was about to close. She was putting her books away and he quietly came up to press against her from behind. Hermione froze. Tom lifted himself on his toes, his hardening cock brushing her ass, and slid a book back in its place, before coming down again and brushing against her. She didn’t say anything. He gently placed his hands on her hips and grinded against her pert ass.
She was smart enough to not let out any noise. Tom wasn’t sure how far he could take it before her senses came back, he really wished it wasn’t soon.
One of his hands trickled down her front to cup her vagina and toy with her pussy. His fingers stroked her through skirt until it slipped out from under his hand. Now the only barrier was her underwear. Hermione moaned softly and ground back against his cock, while his fingers ghosted over her underwear.
“Tom,” she whispered. He grinned.
“Yes?”
“M-more… please…”
“Hm,” he said suddenly, pulling his hand away completely. “No, I don’t think I want to touch you.”
He stepped back and watched in amusement as she balked at him.
“Don’t make that face, love,” he chuckled pityingly, “It’s embarrassing.”
And then he grabbed his things and happily strode out of the library.
-
After the Christmas holidays, the night that Harry and Tom returned back to school, he told her to meet him in secret on the seventh floor.
Harry came under the Invisibility Cloak because she wasn’t a Prefect and not allowed to roam the hallways like he was.
“Come, I want to show you something,” he said quickly, grabbing her hand and dragging her with him.
The patrols that he did with Daphne were uneventful until they ended and she would let him grope her. But the patrols he did alone were very different. Alone, he was free to break the rules so instead of reprimanding students caught out of bed, he actively searched for them and watched. He’d caught several of the older students actually performing sex. There was a ban on the youngers ones so they couldn’t have sex, but they were free to finger each other or perform oral sex. Whichever it was, when Tom found a couple, he silenced and Disillusioned himself, pulled out his cock and jerked off to the sight.
It was through this, that he found a particular seventh-year couple go into the Room of Requirement.
“Whoa, what?” Harry gaped at the door that materialized in front of them. “What’s this?”
“The Come and Go Room,” he explained, opening the door and pulling her inside. His heart smiled in delight as he took in the room. “It makes itself whatever you want.”
They had dimmed lighting and a wide bed. There were various sex toys aligned on a shelf and a bottle of lube. Below that shelf there were Invigoration Potions, Endurance Potions, and an Everlasting-Erection Potion.
Harry gasped. “Do you think these Potions are safe to take?”
“Yes, I believe so. We can try. They’re not dangerous. If we want more dangerous potions I think we should bring our own.”
“What dangerous potion would we want, though?” she asked, puzzled.
He pulled her in by the waist. “Harry, I have a request.”
“What is it?”
“My birthday present.”
“I already gave you one.”
“I want another.”
She was not dumb and could sense where this was going. “Tom…”
“Let’s fuck,” he said, his eyes bright.
“You’re sixteen, but I’m not yet! I can’t have sex, the castle won’t let it happen.”
“The magic in this room is different to the castle’s. I don’t believe any of the rules hold up here. I mean, it let us conjure a sex room.”
She couldn’t argue with that. As Harry pondered, Tom groped and caressed her.
“Come, I know you want to know what it’s like, too,” he whispered in her ear. “Let me fuck you. I’ll fuck you so good. I want to be the first inside your cunt, oh Merlin, it would be perfect if we were each other’s first. I know if we wait until you’re sixteen, then James will claim you.”
Harry smiled lightly. “That’s not true.”
“It is, love,” he kissed her neck. “Come on, let me be the first. You know the only reason our parents won’t let us do it yet is because you might get pregnant too young. I have a contraception potion.”
Her eyes lit up.
“You do? Right now?”
He fished it out of his pocket. Harry licked her lips then grinned up at him. “Okay, let’s do it.”
She took the potion that would keep her infertile for about a week. They wasted no time taking their clothes off. Tom started by eating her out, because he was taught the proper way to prep a lady before fucking her. Harry didn’t moan for him as loud as she did when James did this, but he didn’t mind. James wouldn’t get the satisfaction of taking her innocence, and he will. That was more than enough for him.
When she was wet enough and he was so hard it hurt, Tom finally touched his dick to her pussy. Harry whined as he rubbed the head between her folds before finally lining himself up at her hole and plunging in.
“Oh,” she tossed her head back. He rammed into her at a fast pace. He knew Harry could take it hard and rough, she’d prepared with all the things she’s had up her cunt before. There was nothing like taking a real cock, though. And to him, there was no greater feeling than his sister's walls clenching around him.
They were both loud and free with their moans as he fucked her hard, barely lasting a few minutes before he shot his load inside her.
“Merlin’s balls,” she gasped, when it was over. He dropped his naked body over hers, but still thrust inside sloppily.
They basked in the afterglow of their first time before Tom entered her again and fucked her from behind this time. They took those potions—that worked wonderfully—and did it in every position they’d seen their parents do it in before.
After a couple hours, when their energy and stamina was returning, Tom turned to her.
“Hey, I have another request. Well, more like an idea,” he said. She looked at him expectantly. He searched his robes for a small pouch from which he extracted another potion. “I brewed it myself, so I know it’s safe to take.”
“What is it?” she asked.
He pulled two separate cups from the pouch as well as two more thin glass tubes.
“Polyjuice Potion.”
Harry’s eyes darted up. “What?”
“I was thinking…” he presented her with the glass tubes: one had strands of black hair, and the other had strands of red hair. “You wanna fuck James?”
Harry’s eyes widened. “Do they… do they know about this?”
“Of course not,” he scoffed. “So, do you want to fuck as them? We can do James first, and then when it wears off, we’ll do Lily. Or we can switch to both at the same time.”
“You want to fuck mum?” she asked.
“I miss her tits,” he said.
“I miss Daddy too.”
“So let’s just do it at the same time.”
“Okay,” she said, excitement bubbling inside her. He grinned back, just as excited.
They took the potions and watched each other’s features morph. Tom gained some more muscle, his face changed, and his hair grew out a little. Harry essentially aged up, her face matured, her thighs and hips filled out, and Tom really enjoyed watching her breasts expand to Lily’s size.
“Fuck,” he grinned appreciatively. Everything was different as James. His fingers were different, his body felt different, his cock was different.
“James,” Harry whispered. At first, Tom ignored it, then he realized that was him, so he looked up from his cock to her.
“Lily,” he said.
-
“Oh, James!” Harry squealed as Tom pounded into her repeatedly. He was transfixed on the sight of Lily’s boobs bouncing in rhythm to his thrusts.
He was close to reaching his climax when something inside him shifted. Gasping, he pulled out of Harry and turned away. His own features returned and James was gone.
“I knew you drinking less would affect the length of the potion,” Harry said knowingly. She had predicted that he might switch back sooner because he filled Harry’s cup more.
“Whatever,” he mumbled. “Actually, can we move?”
He pulled Harry up to the edge of the bed and positioned her to straddle his lap.
“Ride me,” he ordered, “and keep the boobs close to my face.”
Harry wrapped Lily’s arms around his neck as she bounced on his cock, making sure her mum’s tits bounced close to Tom’s face. He was transfixed on them. He took one of them in his mouth while massaging the other. And when she encouraged him to, he motorboated them too. To his heart’s content.
Tom suckled on her nipple hard before letting it go. His eyes closed and spurts of his semen shot inside her. It was a weird time for her to shift back to herself too, on his cock.
“Oh, fuck,” he suddenly rolled his eyes back and Harry felt his dick twitch inside her. “Did you know you just tightened over my cock when you turned back to yourself?”
Harry smiled sweetly at him, fucking herself on his cock a few more times.
“Like my tight cunt?”
“Mm, I love it,” he moaned in satisfaction, burying his face in her smaller tits.
“Hey, do you think you could fulfill one of my requests? Do we have any more of the potion?”
He took what remained of the potion—about half an hour’s worth—to change back into James while she remained Harry.
“Daddy,” she grinned up at him sweetly.
Tom made a show of unnecessarily praising and coddling Harry the way James did.
“Oh, my beautiful sweet, sunshine, look at the way she breathes, no other pretty petal is as magnificent—”
“Shut up,” she giggled, slapping his shoulder.
He slammed James’ meatier cock into her without warning.
“Oh, my tight, tight little cocksleeve—”
This time Harry moaned.
Tom looked down at his sister, as their father, and realized this was as good a time as any to see what their deal was about.
“Open your mouth,” he ordered. Harry opened her mouth and he slithered James’ tongue inside the way he’s seen the man do many times.
Harry closed her eyes and moaned happily. She wouldn’t be into this if it was anyone else, but Tom-as-James was the exception. He had to admit there was something filthy about the way their hot tongues slid against the other as they explored each other’s mouths.
Tom did all the things James got to do to Harry’s body and he found that what had previously annoyed him, now made sense. Even Harry’s loud and shrill moans didn’t bother him anymore.
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A Changing World