A/N: As you know, I don't own anything.

Some time ago I read a few stories in which Sirius turned into a girl, but I had difficulties trying to find same sort of stories about Remus. So I decided to write one. The rating might be a bit too high but I rated this M, just in case.

I'd be so happy to get some reviews! So if you're reading, please let me know what you think :)

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Chapter 1: Surprise

Remus Lupin woke up with enormously strong feeling that something was wrong.

Well, there was nothing extraordinary about him feeling that something was wrong. Remus was quite used to feeling that way and it probably had something to do with the fact that he was fifteen years old werewolf studying how to fly by cleaning stuff and how to make a hedgehog turn into a carpet. Besides, he was living in the same dormitory with three boys who thought that there was hardly any difference between the purpose of life and making Severus Snape as miserable as possible. Remus didn't really have too good opportunities to feel normal.

But this morning he felt far more abnormal than he usually did, and that was quite a lot. He frowned, afraid to open his eyes, and tried to figure out what was wrong with him. That was a bad idea.

He felt his fingers. They were smaller than usually. He groped his arms and found out that they were a bit thicker than usually, and his skin seemed to be somewhat softer. His face seemed to be different, too, even though he couldn't exactly say what had changed. His jaw felt rounder and he was quite sure his hair hadn't been that long yesterday. He had considered himself to have quite short hair, maybe a bit over-grown but it hadn't surely fallen to his shoulders that happened to be quite round, by the way.

And then he lay his hands onto his chest and began screaming.

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Sirius woke up with a girl screaming as loud as Evans when James had hexed that pumpkin to chase after her and swear eternal love, and that meant loud. Sirius tried to escape the noise by putting his head under his pillow, but it didn't really help. Merlin, this was annoying. Why couldn't girls realize that morning was never proper time to scream their lungs out -

Wait a minute. Girls? He was quite sure that yesterday night hadn't involved anything that could have made him sleep anywhere else than in his own bed that happened to be located in Gryffindor tower, in boys' dormitory that, for instance, happened to belong to boys. He was also quite sure that James hadn't managed to seduce Lily despite hard trying. Why the heck was there a girl in his dormitory?

He put a pillow aside and glared at the room. James had apparently just got up and was standing next to his bed rubbing his eyes and looking like he was somewhere between awake and totally asleep. Peter was staring at something clearly shocked. Sirius blinked and followed Peter's gaze, and then his mouth fell open.

There was a girl. She was standing in front of the mirror, staring at it like she had never seen herself before. She had stopped screaming, and thanks to Merlin for that, but Sirius wasn't sure if the silence was going to last long. If they had any luck, the girl would pass out instead of screaming and they would all be saved.

'Pads?' James muttered. He was looking a bit more awake now and was staring at the girl, too. 'What have you done?'

'Why do you think I've done this?' Sirius asked.

Hearing their voices the girl turned around. Sirius frowned. She was wearing rather strange clothes, black pajama pants and a loose T-shirt. Besides, the clothes looked pretty familiar.

'What the hell has happened?' the girl asked, her voice cracking. She had quite a nice voice, in fact, but there was something familiar in it, too. 'Which of you did this?'

James blinked. 'Are you lost?'

'Who are you?' Peter asked in awe. Sirius threw a quick glance at him. The girl looked pretty nice, but this wasn't probably the right time to start trying to hit on her.

In fact, the girl really looked nice. Was she Gryffindor? Sirius was quite sure that he should have recognized her, but he couldn't.

'Are you serious?' the girl snapped at Peter, sounding quite terrified. 'You don't know me? So who the hell did this, if it wasn't you?'

'Did what?' James asked blankly. 'You look fine to me.'

'Fine?' the girl repeated disbelievingly. 'Fine? James Potter, if this seems fine to you, I'm gonna find whoever did this and let him alter you, too, and then we can kept on discussing if this is fine or not - '

'Hold on', Sirius interrupted her, when a thought occurred to his mind. 'What did you say about altering?'

'I'm Remus, you gits', the girl bursted. 'And if you don't see anything unfamiliar in me, you've been quite blind for five years.'

Sirius' mouth had fallen open for the second time at the same morning. He was rather sure that James and Peter looked exactly the same, but he couldn't get his eyes from the girl to check it.

The girl… Remus… was standing in the middle of the room, staring at them her quite pale arms crossed on her chest that happened to have a pair of very nice breasts on it. In fact, now that Sirius knew who the girl was, it began to look rather clear. The girl surely had Remus' eyes and face even though her jaw was a bit rounder and her features where a bit softer. She wasn't as skinny as real Remus was, she had nice hips and waist… and then there were those, of course.

'Stop staring at my…' Remus snapped and took a quick breath, 'my breasts. Can't you really explain this?'

'No', Sirius said when it had came clear that neither James or Peter could say a word at the moment. 'We haven't done anything. I don't even believe that we could do something like that, in fact… It's you who's good at Potions, really.'

Remus frowned. 'You think they made this with potion?'

Sirius shrugged. 'I don't know. But it has to be either a charm or potion. Or do you think there's a disease that turns you into a girl?'

'Do you think it's infectious?' Peter gasped.

Remus had gone all white. For a moment Sirius wondered if he had to help him… her to keep a balance, but it was Remus, after all. Remus wouldn't have wanted him to treat his like a girl, even though he was apparently one for now.

'I'm getting headache', Sirius muttered.

'I've got to… er… take a shower', James said rushing into the bathroom. Remus looked shocked.

'Are you sure you haven't eaten something strange lately?' Sirius barked. Remus had unfolded his arms and was staring at him quite helplessly. Sirius couldn't bare it. He had been brought to believe that a gentleman had to help a woman in every situation, or at least if the woman was a witch and not a Muggle. And now this girl was standing there, looking lost and scared and…

Remus shook fiercely. 'This can't be about food. We've eaten same food for five years and you haven't turned into a girl, right?'

'Maybe someone's has poisoned you', Peter suggested. He looked a bit nauseous. Sirius wondered if he looked same himself. There was something strange going on in his stomach, anyway.

'Who would like me to be a girl?' Remus barked.

'Well, you don't look exactly bad - '

'Peter!'

'Okay, okay. Just saying. Maybe you should go for Madam Pomfrey?'

Remus went white. 'And walk across the whole school to get there? When there're students in the corridors? I don't think so.'

'Well, what else can you do?' Peter asked. 'Stay here and hope you'll change back some day?'

'Nobody will recognize you', Sirius promised. 'I can come with you. If someone asks anything, we'll just say that you're my cousin.'

Remus rolled her eyes. 'And they'll run away screaming.'

'Okay, do you want to be my girlfriend, then?'

'No!' Remus snapped. 'Don't be ridiculous. We'll just go and if someone recognizes we, we'll run.'

'That's quite a poor plan, er, Remus', Peter said.

'You're supposed to look me into eyes', Remus remarked. 'Okay, let's go. I want to get changed back as soon as possible.'

'Are you sure?' asked James, who had apparently took his, er, shower, and was standing in the bathroom doorway. 'We could keep you as a girl for few days. You could think it as an experimentation - '

'No!' Remus and Sirius snapped at the same time.

James shrugged. 'That's a shame, really. Once we got a girl to ask questions - '

'I'm not a girl! I'm Remus!'

'What're you going to wear?' Peter asked. 'Your clothes seem a bit strange for a girl.'

'Fuck. James, where's your cloak?'

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Madame Pomfrey was staring at him quite intensively. He didn't know what she was looking for, but he really hoped that she would figure out an explanation. He didn't exactly enjoyed sitting on a bed with Pomfrey and Sirius both glaring at him like he had had two heads instead of breasts.

Finally Madam Pomfrey blinked and shrugged. 'Well, mr. Lupin, you're clearly a girl. I can't really say anything else. You don't have any visible injuries and there's nothing that would show this is due to a food poisoning.'

'This can't have happened by itself', Remus said, trying to stay calm as it was getting more and more difficult. 'There must be a reason!'

'I'm sure there is one, dear', Madam Pomfrey said. 'I just don't know what it is.'

'I can't stay like this!'

Thirty minutes later he was sitting in Headmaster's room listening how both Dumbledore and McGonagall were trying to explain him that there was nothing they could do. Sirius was still with him, but he was being more and more absent and it was difficult even catch his eyes, so that in the end Remus felt about as good as a mouse that has got stuck between the door and the doorway because of its tail. Not that he had ever gone through that particular experience.

'We'll do everything we can to find a solution', professor McGonagall promised seriously, but Remus was quite sure she was trying to keep herself from smiling. 'Until that, I guess you just have to manage somehow. You're a brave girl… excuse me, a boy… and I'm sure you've gone through much worse things than being a girl for a few days.'

'Days?' Remus heard himself saying. 'It will take days to change me back? What I'm supposed to do until that?'

'Well', Dumbledore began and his calm voice made Remus feel slightly better, 'I suggest that you'll go back to your own dormitory and keep on studying exactly like you used to before this… accident happened. I know it can be a bit confusing, but I'm sure - ' he threw a quick glance at Sirius, ' - that your friends won't do or say anything inappropriate.'

'Yes, of course, no, sir', Sirius said quickly.

Remus frowned. He felt still shocked and helpless and it didn't help him at all that there was so clearly something additional on his chest.

'Well, you surely realize that it's best for you to go change your clothes and go for the breakfast', the Headmaster said kindly. 'And you should probably wear a skirt, mr. Lupin. It might feel a bit strange at first, but I'm sure it will help you to adapt yourself to your new… temporary sex.'

'Er', said Remus, 'do I have to pretend that everything's normal? And how can I explain this?'

He didn't even know what he actually meant, saying this, but Sirius seemed to interpret it to mean his breasts, since he was glaring at them quite focused. He threw a quick glance at Sirius and the boy blushed.

'This is a school for wizards and witches', Dumbledore said. 'I'm sure a boy turning into a girl isn't the oddest thing that has happened here. Even though I'm quite sure it gets to the top three…'

'Albus', said professor McGonagall quite sharply, 'I'm rather sure my students need to go now. They've got a whole school day ahead them and they aren't even wearing their uniforms yet.'

'Of course, Minerva', Dumbledore said a bit absently. 'You may go. And, mr. Lupin, I hope that your… state will get better soon.'

'Me, too', Remus muttered, following Sirius to the corridor.

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'Thanks to Merlin, they have gone', Remus said when they entered the dormitory.

Sirius frowned. 'Why's that? They're probably just eating breakfast.'

Remus stopped to the middle of the room and Sirius couldn't help blinking. The blood was rushing through his veins and he really hoped he wasn't blushing. It was bad enough to find your almost best mate fit and good-looking, there was no way he was going to blush in front of Remus and those nice lips of his.

Of course, it was totally natural, Sirius tried to remind himself. He was a guy and at the moment Remus was a girl. Besides Remus was a really attractive girl with his light brown hair that fell barely to his pale, soft-looking shoulders, large, blue, quite perplexed and frightened eyes and very nice breasts that bounced every time he took a step. The white T-shirt he was wearing didn't help the situation at all, since Sirius could see his nipples easily through the shirt.

Yes, Sirius was reacting totally normally and there was nothing he could do about it. Besides trying not to show what he was thinking.

'What?' Remus asked, annoyed. 'You're staring at my… well. Again.'

Sirius shook his head and tried to make himself grin. It wasn't that hard, in fact. 'Well, what did you expect? That you can turn into a girl just out of the blue and none of us will be a bit shocked? Or keen on your new parts?'

'I'm a boy', Remus gasped, beginning to sound a bit desperate. 'Please, Sirius! I'm haven't got used to my friends staring at my breasts!'

'You should wear a bra.'

'What?'

'Really', Sirius said trying firmly look at Remus' eyes and not other parts. 'You're… bouncing quite a lot. And you should probably change into that uniform McGonagall gave to you.'

Remus glared at him. 'Really? I should wear a skirt?'

'Well, if you don't want to keep hiding in our dormitory for Merlin knows how long…'

Remus went white. Sirius felt almost bad, but then he forgot it as Remus rose his hands to pull away his T-shirts and stopped suddenly blushing hard.

'What?' Sirius asked, even though he clearly knew what. He was quite certain that one particular part of him was doing very well at the moment, and he wondered if Remus could see it. Well, what else could you wait to happen when you're standing in front of a pretty girl and she begins to take her clothes off?

Remus choked. 'I should… er… I should probably go to the bathroom…'

'I've seen you change before', Sirius said. 'Just stay there. You know, if we keep on… being shy and all that… this won't work out. You being a girl, I mean. And I'm not nearly as bad as James or Peter.'

Remus didn't look like he believed him. 'Well, I'm gonna turn around, anyway.'

'Go ahead, then', Sirius said, only slightly disappointed. Remus surely had quite nice back and waist, too. It was a bit shame that he was usually a boy.

Remus bent down and opened a bag McGonagall had gave her… him. Sirius watched him picking clothes one by one and then stopping. When Remus stood up, he was holding black, decorated bra.

'Oh', Sirius said, when Remus turned to look at him apparently forgetting that he wasn't wearing a shirt anymore.

'Yeah', Remus said, looking panicked. 'Do they really think I know how to put this on?'

'Er', said Sirius.

'Do you? You surely know much more about these… things than me.'

'Er', Sirius repeated, blinking. 'You should… er, just put on them. And could you please do it already? I'm quite distracted here.'

He was quite sure that there was a flinch of laughter in Remus' eyes. 'I'm so sorry, Padfoot.'

Sirius shook his head. 'Well, it's not… that bad… just stop bouncing, please.'

'Bouncing?'

'Forget it. I guess I can… hook those things, if you just put them on.'

Remus obeyed. Sirius bit his lower lip and tried to keep his fingers from trembling. Oh, fuck, he was acting like Remus had really been a girl and he had fancied her! Well, it was probably due to the shock. A soon as Remus was probably clothed and Sirius had some time to think he would get his mind calm and then everything would go back to the normal. Besides Remus being a girl, of course.

'This feels weird', Remus said after a moment, already grabbing a white blouse and a skirt from the bag. 'I don't think I can stand this for more than a few days.'

'What?'

He rolled his eyes. 'Being a girl. Gosh, I could hit you!'

'Hit me?'

Well, Remus was beginning to look really irritated. 'You can't even form proper sentences. If you're always like that when you're around girls, I can't really blame them for mocking you.'

'Hey! Girls love me!'

'I don't', Remus said, grinning slightly. It looked quite wicked since he still seemed annoyed. Besides, he looked really fit with that skirt.

Sirius took a deep breath. Okay, his best friend, who was a male, happened to have a girl's body. He also happened to look good. He could cope on with that. There was no reason to dream of running away.

'Are you coming?' the brown-haired girl asked him.

Oh. Breakfast. Right. Good. That would help.