What they didn't know
Harry Potter was sitting in his room at the Dursley's thinking over his life so far at all the people he had gotten killed due to his 'love of playing the hero' as Hermione had put it. First there was Cedric Diggory who would have survived if Harry hadn't made him take the cup with him. Also Sirius and his friends who were almost killed on that fateful night in the DoM and finally his favourite teacher and protector Albus Dumbledore who had been killed right in front of his eyes by his treacherous potions teacher Severus Snape. The reason Harry was thinking of this was because it was his birthday in a minute and all these people wouldn't be around to celebrate with him. When the clock stuck midnight, however, he felt an intense pain shoot through his entire being which ranked below the cruciatus and above having your arm snapped in three separate places. After several minutes of agony he mercifully slipped into unconsciousness. When Harry awoke he instantly knew something had changed he noticed his clothes were baggier in certain areas and tighter in others. Harry stood up to look in the mirror and had the shock of his life when he saw 'his' new appearance. 'Sweet Merlin' he thought to himself 'I've got tits'. (s)he indeed had breasts swelling from his/her chest and a quick glance into the boxers showed that he indeed was now a she. (a/n now referring as she as it will save confusion) she looked into the mirror and her first thought was 'man I'm hot' she then realised what problems this could cause as she no longer had a suitable wardrobe so she sat down to write a letter to the order almost immediately.
Dear order
I have had some recent developments come up and I wish to discuss with somebody I would appreciate if Tonks or another female member could come here at their earliest possible convenience.
Harry
About half an hour later a confused looking Tonks was knocking on the door to number four Privet Drive where she was met by an intimidated Petunia who said to go straight up as Harry had shouted down that somebody would be coming over as he had problems although it had not sounded like her nephew as the voice was several octaves higher. Tonks walked through the door to see a long black haired girl sitting on Harry's bed. She pulled out her wand and said "what have you done with Harry?" to which the girl responded "Tonks it's me I know I look different and I can't explain it I thought you might be able to explain". Tonks looked startled a second before asking "what form does your patronus take?" to which she replied "a stag" and then performed said charm to prove it. Tonks sighed and sat down and said "Dumbledore said something like this could happen and explained why to the order. It would seem that Voldemort wanted to restrict your powers so he got one of his most loyal servants to perform an ancient charm which not only restricted your magic but also destroyed part of your eyesight which has undoubtedly come back as you are no longer using your glasses. The reason for your current state is that the charm also changed your sex so you were in fact originally female and this is your original form." This registered more than Tonks was expecting and Harry realised that this was not temporary and was slowly coming around to the idea that being female could be fun. "Well since I'm now permanently female I think that a new name and a new wardrobe are in order". "Remus always told me that if your parents were to have a daughter her name was to be Emily Lily Potter. So how about that for your new name?". "I would love for that to be my new name because my mum thought of it". Tonks presented Harry with a red glowing stone "this is a reader stone Emily it tells you exactly what your abilities are". Emily took hold of the stone and it grew hot in his hand before going cold again and depositing a piece of parchment in a confused Emily's hand.
Emily Lily Potter's magical abilities:
Parselmouth
Animagus (large tiger inherited from Lily Potter)
Wandless magic
Metamorphmagus (medial power able to change everything except gender)
Empath (undiscovered)
Magical power – 285
Tonks was amazed at this long list of powers and when she reached the bottom she nearly fainted "by Merlin Emily that's the largest magical power in history Dumbledore only had 200 and Merlin himself only reached 250 and the last know record of V-V-Voldemort was that he reached 225" Emily was stunned she was more powerful than even the great Merlin? Then a question came to her " Tonks would you be able to train me in my metamorphmagus abilities?". "I would be honoured to Emily I think we would be able to start today but first we should go and see to the 'special business' you have at Gringotts and get you new clothes". Emily did not inquire as to what the special business was but she took Tonks' hand and the auror apparated them both to Diagon Alley just outside Gringotts and had the unfortunate problem of landing on a certain bushy-haired girl entering Gringotts. "Ouch. Oh hello Tonks who's this you've got with you?". "I'll explain later Hermione or maybe you'd like to come with us and find out a little sooner." Hermione decided to go with the two and Tonks strode up to the desk and whispered something to the goblin who stared at the mysterious girl and got down from his podium "if you would like to follow me we can deal with that".
Inside the will reading office there was an incredibly old goblin who motioned the three to sit down. "I believe first there is a matter of name changing Harry James Potter you wish to change your name to one Emily Lily Potter is this correct?" this was confirmed with a nod from the girl and Hermione's mind went into overdrive was this really Harry? "Harry is that you?" she whispered and she replied with a "yes but we'll talk about it later". "Very well Ms Potter that has been done for you and now to the matter at hand. The reading of the wills of one Sirius Orion Black and the joint will of Lily Claire Potter and James Craig Potter". The wills were as follows missing out some of the legal jargon of the wizarding world.
I Sirius Orion Black do hereby leave five million galleons to my best friend Remus (moony) Lupin and also some advice. Moony mate you and I both know Tonks likes you so don't push her away. And to my cousin Nymphadora (sorry) Tonks I leave the sum of five million Galleons and some advice. Tonks if Remus still doesn't agree he had feelings for you please knock some sense into him for me. At this point Tonks giggled and there was stifled laughter coming from the corner where Emily and Tonks noticed one Remus Lupin. The will went on. To my godson Harry James Potter (or Emily Lily Potter if the change has taken place) I leave the remaining contents of my vault which amounts to some 5,381,924,265 galleons along with other assortments. Emily let out a strangled sob at how much she actually owned now it rivalled the fortunes of the Malfoys.
We Lily Claire Potter and James Craig Potter do hereby leave the entire contents of our ancestral vault to our only son Harry James Potter (or daughter if the transformation has taken place) which totals some 25,372,159,841 galleons and assortments. At this point actually fainted for five minutes after realising how wealthy she was. The three females took a trip down to the two vaults Emily had just inherited. Upon entering the vault inherited from the Blacks she immediately noted all the dark arts books around but also noticed the piles of coins scattered around. Upon a silver coloured cushion lay a magnificent silver ring with an onyx stone in it with a capital B etched in silver on the top. "That is the Black family ring Miss Potter you place it on the index finger of your wand hand". Emily slipped the ring on and it shrank to fit her hand and she felt the tingle of magic flow through her and settle back into place. "The ring has accepted you as the new head of the most ancient and noble house of Black". Emily looked around and seeing nothing else that she wanted they moved on to the Potter family vault. Inside this vault they found even more money piled around and an even more extensive set of weaponry. She noticed not one but three rings on a red cushion here. One was a gold ring with a ruby in it with a capital G in gold on the ruby. "That is the ring of Godric Gryffindor he is your ancestor through your fathers lineage. This ring goes on your left middle finger". She put the ring on and felt the same effect as the Black ring had. The other two rings she put on as well, there was one made out of a black metal with a blue stone which was the ring of Helga Hufflepuff and was said to bring intense healing powers to the wearer and was situated on the left hand index finger. The last one was a platinum ring with an emerald in it which was the potters ring and went on the right hand middle finger. After putting on the rings Emily selected two slim daggers which had purple stones in the hilts the like of which had never been seen before along with the sheaths and stuck them into place on her belt with a sticking charm.
Emily walked out of Gringotts a short while later shocked and elated with her two equally shocked companions and she walked into Madame Malkin's robes for all occasions and asked to be fitted with a full wardrobe with both magical and muggle clothes. Upon seeing the rings on her fingers she immediately took the two to the back room and for the next two hours measured her and suggested clothes that would suit her and at the end Emily had bought a full set of female school robes numerous muggle t-shirts and jeans two sets of dress robes and of course what ever witch needs bras and underwear. After paying Madame Malkin and saying that she would be by to pick up everything soon she took a couple of t-shirts and jeans and underwear and got changed into the first set of clothes that actually fit her (although she had to call Hermione in to help with her bra). "Incidentally" she added to Madame Malkin "could I have these robes charmed to adjust to my body shape as I am a metamorphmagus?" the woman said a quick spell on the clothes she was wearing and the ones she was carrying and said that all of the clothes would be the same. Tonks apparated the girl back to her aunt and uncle's house and then left.
Emily was having a hard time explaining to her aunt and why she was now female until they finally grasped it upon which she went upstairs, collapsed on her bed and fell into a deep sleep pausing only long enough to change into a pair of pyjamas she had bought that day.
A/n I know similar ideas have already seen story but I wanted to do one myself I hope I'm ok at it and I hope you enjoy.