A/N - Hey everybody. I wrote this short story because although there are plenty of stories out there where Harry has sex with someone whilst female, there are none that put in what I feel is a plausible context. This story is set in the only possible place I think it could happen - just after Ron has left Harry and Hermione during Deathly Hallows.

Obvious warning, this is not for younger readers, and if for some reason anyone wants to use this in their own story, just let me know. So, let's get right into it, why don't we?

Wales, UK

"Ron, no - please - come back, come back!"

Hermione ran after Ron out of the tent, whilst Harry stood there, unable to believe what had just happened. He heard a loud crack, and Hermione returned, sobbing.

"He's gone! He Disapparated!"

She flung herself onto a bunk, and shook silently, tears flowing down her cheeks.

'I should go comfort her,' thought Harry, 'and if I'm lucky, I might just get something I've wanted for a while'.

Mind made up, he crossed the short distance and sat down beside her, wrapping an arm round her, and rubbing her back soothingly. Hermione didn't say anything,so Harry continued for a minute, before he leant in and pressed his lips to hers.

"Harry, wha-?"

"Shh, Hermione," Harry muttered, "You need something to help you forget, and as a friend it would be wrong of me not to offer it."

Not giving her a chance to respond, he rejoined their lips, showing her what she truly meant to him. He guessed, by the way she slowly started responding, that she agreed with where he was taking them, and so, heart hammering, he raised his hand to her breast, and gave it a light squeeze. However, the result was not quite what he had expected. Hermione jerked backwards, looking at him disbelievingly.

"HARRY!"

"Hermione?", he stuttered weakly. He thought that she wanted it, just like he did.

"What do you think you're doing?" she cried, staring him straight in the eye.

"I want to help you forget about Ron, even if just for a few hours. It will help us both get over it, and this seemed like the best way."

She looked at him with, if not forgiveness, at least understanding.

"Harry, that's very sweet of you, but you know I love Ron, even if he is being a collosal arse. My first time should be with him, not you."

Harry started to panic internally. He knew this was a once in a lifetime chance to get what he wanted - after this, Hermione would never be as receptive to his advances again.

"However," she said, bringing his attention back to her, "we do have something that could help - Polyjuice Potion. You're right Harry - it would be a good way to forget about Ron, but my virginity is his to take, and his alone."

"Then what are you saying?" Harry asked, confused. "You want me to take it and become Ron?"

"Good God no!" Hermione exclaimed. "That would be even worse - a lie! No, maybe we could take it to become each other."

Harry could hardly believe his ears.

"You mean - I would be a girl, and you, a guy?"

She nodded. "That's exactly what I mean. It's the only way I would feel remotely comfortable with this, since its the only way to conserve my virginity for Ron. What do you think?"

Harry considered. While it may mean he didn't get to have sex with Hermione as himself, it was still happening in a roundabout way. At the same time, he could actually be Hermione, something he'd, understandably, never even thought about before.

"Okay" he said. "Let's do it."

"Right" Hermione said. "Here's your potion. I'll take mine in here, you take yours outside."

"Why can't we both take it in here?"

"It'll be weird enough having sex with my own body - watching you turn into me is going too far. Anyway, once you're outside, undress and send your clothes to me. I'll send mine to you, and that way, we can change into each other's clothes before we get into this."

"Sounds good," Harry grinned. "See you in a few minutes." He walked out, thinking that Hermione did seem to be getting into the spirit of this quicker than even he was.

Once outside, Harry found a sheltered spot, and undressed. After using a Banishing charm to send his clothes back to Hermione, and receiving hers in return, he conjured a full-length mirror to watch his transformation in, and reached for the Polyjuice.

"Here we go," he whispered, buzzing with excitement. He swallowed it one large gulp, observing that essence of Hermione was infinitely tastier than essence of Goyle (although still not nice, exactly). For a second, nothing happened, and then a tingling sensation shot through his entire body, causing him to double over in pain. He idly noticed, in the back of his mind, that this was a lot more painful than his previous transformation into Goyle, and guessed that it must be due to the fact he was changing gender as well.

Harry forced himself upright, so he could watch the mirror properly throughout. First, he saw his entire body shrink, adjusting to Hermione's shorter build. His waist, shoulders and legs grew thinner, even as he heard a loud crack, and saw his hips expanding outwards, giving his body the characteristic hourglass shape shared by Hermione and so many other women. Muscles all over his body became less developed, and the hair all over his body disappeared. The exceptions were on his head and between his legs - on his head, the hair grew longer, over his shoulders, turning wavy and light brown, and between his legs, it shrink to a small patch, barely noticeable. Then came the biggest changes. A pressure built up in Harry's chest, and he watched in shock as his nipples grew thicker, and began to push outwards from him, bringing two bumps of fat with them. Harry held them in his now smaller hands, feeling the unfamiliar weight of breasts hanging from his body. He looked back at the mirror, seeing that his face had turned to Hermione's whilst he'd been occupied with his new rack, and then the final change happened. Harry clutched his penis as it began to shrink, watching as it was pulled back into his body, leaving the area between his legs completely flat, until it split open, and proved that Harry was now indeed female. The internal changes weren't visible in the mirror, but Harry knew that he was now in possession of a womb, ovaries, and everything else that a woman should have.

Now that the transformation was complete, Harry took a moment to observe herself in the mirror.

"Blimey," she muttered, in a much higher voice than before. "Hermione is even more beautiful than I thought."

Her body was incredible, at least to her eyes. Everything seemed the perfect size - not too big, not too small, and exquisite in every way. She couldn't put it into words, but it felt… different being female. Maybe it was the new weight on her chest, or the lack of a weight between her legs, but something was different in her very soul. However, Harry decided to ignore the philosophy for a while, and get on with what she really wanted. Putting on Hermione's clothes, ignoring the bra (she wasn't even going to bother trying to figure out how that worked), she headed back to the tent, filled with primal anticipation.

When she entered, she was greeted with one of the strangest sights she'd ever seen - his old body, looking in a mirror whilst naked. She smirked, then decided to surprise Hermione. "Enjoying the view?"

Hermione jumped around, surprised. Then he scowled at Harry.

"Harry, I'm not dressed yet!"

Harry shook her head, amused.

"You don't need clothes for what we're about to do."

Without waiting for a reply, she crossed the room, and wrapped herself around Hermione, engaging him in a passionate kiss. She guided them towards the bed, feeling Hermione's penis enlarging as they moved, pressing against her belly. Seeing it aroused something in her, and she felt a dampness start to occur between her legs.

"Hermione" she said breathlessly, "would you kindly undress me?"

Hermione looked at her, eyes filled with desire. It was odd for both of them, to see their own faces so hungry, worn by another.

"Of course Harry." He pulled her top over her head, exposing her naked breasts, and stared at them. It would seem that Polyjuice transferred sexuality between bodies, because the sight of her own breasts wouldn't normally turn her on. But when she was in Harry's body, they drove her crazy. Hermione reached for Harry, and started squeezing and grinding her breasts. Harry let out a moan.

"Hermione! Ohhhh, that feels good!"

Hermione grinned, and decided to increase his teasing of Harry. Reaching in between her egs, he pushed a finger inside of her, and started moving it, slowly at first, but then faster.

"Oh my god! That's incredible! Don't stop, don't stop, don't stop…" Harry begged Hermione, feeling release about to arrive. Just before Harry could orgasm, Hermione stopped.

"What? No, carry on!" Harry complained, needing to finish.

"Don't worry, we're moving on to the main event now." Hermione raised himself above Harry, lined their bodies up, and thrust into him, hard.

"Fuck, Hermione! That's painful!" Harry grimaced.

"Is it? I'll make it feel better then."

Hermione started to move, and tentatively Harry joined in, slamming their bodies together, faster and faster, until eventually, Harry have a cry and orgasmed, the walls of her vagina clenching wildly on Hermione, tipping her over the edge as well, and she released a burst of semen into Harry, and then collapsed on top of him, panting. They lay their for a moment, before they both felt their bodies began to tingle. The hour was up.

Harry lost her breasts, and regained her penis, even as the opposite happened to Hermione. After a few seconds, they were back in their original bodies, lying naked next to each other.

Hermione was the first to break the silence. "Thank you Harry. That helped, it really did. But it can never happen again, and you can never tell anybody. Understand?"

Harry nodded. "Of course."

He didn't mind. He'd got what he wanted, and who knew? Hermione might need comforting again before Ron returned. If she did, he would be there to help her again. All she had to do was ask, and maybe, just maybe, she'd realise that she didn't need Ron - someone else already loved her much more.

Thanks for reading everyone! Please leave a review if you want, and if you want me to turn this into a story - you know, some kind of Harry/Hermione love story following on from this, then feel free to suggest it.