A/N: So this has been in my head for awhile and I just had to get it out. I'm really keen for this story and I think it shows.

So this one has a female version of Harry called Arianna nicknamed Ari.

This chapter is mostly filled with information about certain things so it is necessary to get this out of the way first.

It had been four months since the war in which the light won and Arianna Potter triumphed over Lord Voldemort. Arianna had helped in the restoration of Hogwarts and it was well on its way to its former glory, she had also continued her practice in the medical field and has since achieved the status of Senior Healer at St Mungo's Hospital for Magical Maladies. Her interest in becoming a Healer had started in her third year and with her common trips to the hospital wing Madam Pomfrey had been very encouraging and keen to have a student to teach. Arianna had taken the Healer exam one month after the war, the examiners were quick to pass her as she had the skill and Healers were in desperate need due to the after effects of war.

Arianna was currently in the Burrow eating porridge in her purple pyjamas, Hermione was sat opposite her munching on her toast reading a book.

"Hermione," Arianna said to catch the girl's attention. "What are you going to do now the war is over?"

"I don't know," Hermione replied softly. "McGonagall is the headmistress of Hogwarts now so I might see if I can teach there or at the very least do an apprenticeship-type thing there."

"I think you'd make a great teacher," Arianna said with a knowing smile towards her best friend. "Are you going to marry Ron first though?"

Hermione blushed furiously and stuttered and stammered in response, leaving Arianna laughing in response. They ate the rest of their breakfast in a comfortable silence except for Arianna's occasional giggles.

"Oh here you are girls," Molly Weasley said as she entered the kitchen. "Post arrived and there is a letter for all of us from Gringotts."

Arianna frowned as she was handed the letter wondering what Gringotts would want from her, she opened the letter with slightly trembling fingers.

Dear Miss Arianna Lily Potter,

Congratulations of the defeat of the feared Dark Lord, we goblins are appreciative of the work you have done to ensure that everything is running smoothly from the after effects of the war. I am writing to inform you that your presence is needed at Gringotts Bank to discuss the contents of the following:

The last will and testament of James Potter

The last will and testament of Lily Potter

The last will and testament of Sirius Black

We hope to see you today at noon; this letter will act as a portkey to bring you here just before the designated time.

Hoping you are well

Ragnok

Head of the Potter and Black family vaults

Arianna was shocked into silence as she stared at the letter in her hand wondering how she hadn't known about the wills beforehand she was dimly aware of Molly and Hermione talking about the contents of their letters. She rose quietly from the table and muttering something about a shower she left the room.

OoO

"Ari, are you okay?" Hermione asked softly aware that her friend had been abnormally quiet all day. Arianna nodded and pushed open the door to Gringotts and walked calmly down the aisle. Once she reached the dais were the head goblin sat she coughed politely to get his attention before bowing low.

"Merry meet," She said to the goblin. "My name is Arianna Potter, I have a meeting today with Ragnok in accordance to my parent's and godfather's wills."

"Merry Meet," the goblin replied bowing his head. "I am aware of you meeting if you will follow Gomuk he will take you to the meeting room."

Arianna nodded and followed Gomuk after giving him the same greeting she gave to the head goblin. Once they reached the room Arianna was surprised to see Narcissa Malfoy and her son Draco as well as Andromeda who had brought Teddy along. Arianna immediately went over to her godson who cooed happily at seeing her, although when Ragnok entered the room everyone fell silent even little Teddy.

"We are here to listen to the last will and testament of James Potter, Lily Potter nee Evans and Sirius Black." Ragnok explained as he pulled out three scrolls, unrolling the first he began to read its contents.

"I, Lord James Potter, being of sound body and mind do hereby bequeath and request the following:

To Remus Lupin, I would leave my daughter to you but we both know that it would never be allowed so Moony I ask that you look over my daughter and try to stop Padfoot from doing stupid things with her. I know Sirius will take my passing the hardest so please keep an eye on him and I wish for you to tell Arianna everything about me even the bad things for I wish for to know the type of man I was. I also leave to you my dear friend sixty thousand galleons to with what you will and don't argue with me.

To Sirius Black, I leave to you my precious daughter. I hope for you to raise her like the true marauder she is, teach her everything you know about pranking and of all the passageways around Hogwarts. Padfoot you need to stay strong for Arianna so don't do anything too reckless, also I give you permission to beat up any boy that so much as looks at my little girl.

To the Weasley family, I leave to you fifty thousand galleons and the hope that you will provide a second home to Arianna like you did to me and Lily.

To my dearest Arianna, I leave everything else including the title of Lady Potter and Lady Gryffindor. I wish the best for you my precious little Prongslet, grow into the beautiful woman that I know you will be. I'm sorry I can't be there to see you grow but know that I will always love you and I am so proud of you. I also wish for Ragnok to give you a letter which your mother and I wrote together."

Arianna had tears rolling down her cheeks as she reflected on what was said, she slowly looked up to Ragnok saying "I want the money given to Remus put in a trust fund for Teddy."

Ragnok made a note of Arianna's wishes and gave her the letter from her mother and father. He moved onto the next scroll and opened it and began to read from it.

"I, Lily Potter nee Evans, being to sound body and mind do hereby bequeath and request the following:

To Remus Lupin, I leave the following advice; be yourself and do not let people's prejudice affect you. You are a great man and an even better friend. I also request that you watch over Arianna, I'm sure Sirius would be a great father figure to my girl but she will also need a firm hand to tell her what's right and wrong.

To Sirius Black, I leave the most important being in my life, Arianna. Look after her Sirius and raise her well because if you don't I will kick your butt when you join the afterlife. I'm sure James already told you to raise her as a pranking genius but do teach her other things as well. Education is important too.

To the Weasley family, I ask that you take my daughter in your arms and be the caring gentle hand through the rough times that are sure to follow. I wish for you to give her hope and friendship for that it what will see her through to the very end.

To my darling daughter, I only wish I could have seen you grow. Do not be sad by our passing because I would sacrifice myself a hundred times over to save the life of the most beautiful little girl as would any mother. Be brave my love and be strong I know you will sometimes feel so very lonely but remember that we will always be in your heart. I also leave to you a letter that your father and I wrote together. I am sure Ragnok has already given it to you. Always remember that I love you."

Hermione had moved from her seat during the reading and had embraced Arianna in a hug and let her cry into her shoulder. Ragnok opened the third and final scroll; he began once again to read.

"I, Lord Sirius Black, being of sound body and mind do hereby bequeath and request the following:

To Remus Lupin, I ask that you look after Arianna in my absence I would like to make it official but you know the laws. I also leave to you fifty thousand galleons.

To Andromeda Tonks, I hereby reinstate you into the Black family and leave to you forty thousand galleons.

To the Weasley family, I give to you fifty thousand galleons and ask that you also watch over Arianna and continue to help her throughout the dark times that lay ahead.

To Hermione Granger, I leave to you thirty thousand galleons and free access into the Black library which lies within Gringotts be free to read until your heart is content. Thank you for being the friend Arianna needed.

To Bellatrix lestrange nee Black, Narcissa Malfoy nee Black and Draco Malfoy, I herby disinherit you. You no longer have the Black name behind you. I wish for all the money taken out of the Black vault by those named above to be put back. I hope you will regret ever thinking about joining the dark.

To Arianna, I am sorry that I got to spend so little time with you. You are beautiful and strong Arianna, your parents would be so proud of the woman you are becoming. I have faith in you and I know that you will be the victor in the war to come. I love you so much never forget that. To you I leave whatever is left including the title of Lady Black."

Ragnok put down that paper in his hand and looked at Arianna, he waited for her to compose herself before asking "do you wish for the money bequeathed to Mr Lupin to be transferred to Mr Teddy Lupin?"

"Yes, I also wish to reinstate Mrs Malfoy and Draco back into the Black family and I wish for the arranged marriage between Narcissa and Lucius Malfoy to be annulled. Narcissa and Draco shall now be Black's by name. I also wish to make it known that they are both under my protection." Arianna said confidently. Ragnok merely smirked and said it would be done.

"Why?" Narcissa, who had remained quiet throughout the whole reading, asked. "Why would you do that?"

"Because you saved me Ms Black, you lied to Voldemort, even though it would mean your death if he found out. I owe you a lot and this is the least I could do." Arianna said smiling at the mother and her son.

"According to the wills, you are now Lady of three very old lines." Ragnok began once everyone had settled down. "This means you have numerous properties across the country and in other countries too. As you can see from this list I am about to hand you some of them are already inhabited by muggles."

Arianna took the list from Ragnok with a polite 'thank you' looking at the properties she had inherited her eyes widened.

Potter Manor, Wiltshire, England – empty

Potter House, Coventry, England – empty

Potter Cottage, Cornwall, England – Danes Family, Muggles

Potter Apartment, Paris, France – empty

Black Manor, Wiltshire, England – empty

Black Villa, Rome, Italy - empty

Gryffindor Castle, Wiltshire, England – empty

Gryffindor Manor, Venice, Italy – empty

Higurashi Shrine, Tokyo, Japan – Higurashi Family, Muggles (Line of Spiritual Priestesses)

"All this is mine?" Arianna asked perplexed, Ragnok nodded in response. "Well, I would like to give the apartment in Paris to Hermione and Potter house to Ron."

"Ari, I couldn't take that from you." Hermione and Ron both protested.

"Please just take it, what would I do with them anyway?" Ari said with a roll of her eyes and Ron and Hermione relented unwillingly. "Besides you're going to need a house to raise your children in and a holiday getaway." Arianna grinned as everyone laughed.

"I want Black manor to go to Andromeda or if she is happy in the house she has I want it given to Teddy when he is of age but I want every dark artefact to be removed. Speaking of Teddy I want him to be named heir to the Black name as he is my godson."

"I wish to remain in my home Ari but it will be a wonderful gift to give Teddy when he is older." Andy said softly whilst Teddy blew a bubble in agreement.

"I also want to give Black villa to Narcissa Black and her son, I also want every dark artefact removed from there as well," Arianna turned to face Narcissa and said solemnly. "I wish for you to have a new start and perhaps Italy can give that to you. I want you to know that if you ever need me you can contact me."

"Thank you so much, if that is all we are need for. I think Draco and I should take our leave." Narcissa said standing and leaving after a nod was given from Ragnok. Draco left behind his mother with a quiet 'thank you' to Arianna.

"I wish for the Weasley family to have a holiday home in Gryffindor manor. I know you won't accept it if I gave it to you so I will say this, you are always welcome to use it for a holiday." Arianna said.

"Thank you dear, it would be nice to go on vacation once in a while." Mrs Weasley said with a smile on her face.

"Well that leaves me with Gryffindor castle and Potter manor. Ragnok, why does it have Higurashi Shrine on the list?" Arianna asked.

"The Higurashi's were your maternal grandmother's adopted family. Kentarō Higurashi was your grandmother's adopted brother; they grew up in Japan on the Higurashi shrine until your grandmother came back to England and married your grandfather. You do not own the Higurashi Shrine directly but it was on the list because the shrine is inherited through family."

Arianna nodded thoughtfully "Is that all was required from me then?"

"We aren't quite done yet Lady Potter there is still one matter I wish to discuss with you. I would rather do so in private though." Ragnok said looking at the other members in the room who all politely excused themselves from the room.

"I will see you outside." Hermione said to Arianna as she left closing the door behind her.

"I understand that you are in possession of the three items of the Deathly Hallows." Ragnok said shocking the girl before him.

"Yes, I dropped the stone in the forest and snapped the Elder Wand in two and threw it away after mending my own wand. Then they just appeared in my room one day and no matter what I do they keep coming back to me."

"Of course they do. You have been chosen by Death Lady Potter, and Death does not relinquish its hold so easily." Ragnok smiled knowingly.

"But why choose me?"

"You have conquered Death many times and yet you do not seek the gift of immortality like so many do. You are a worthy companion to Death. You would be able to converse with Death if only accepted the fact that the Hallows are yours."

"What does owning the Hallows mean then?"

"Only their creator can truly answer that."

OoO

Arianna was in Potter manor once again staring at the Hallows, she hadn't used them since the war and refused to touch them, but what Ragnok said had piqued her curiosity. She wanted to know what having them meant and the one who would give her those answers was the very being she didn't want to talk to. Sighing she moved away from the Hallows and instead chose to stare at the unopened letter from her parents, she didn't know what to do with that either, should she open it? Should she read her parents last words for her? Or should it forever remain a secret? Maybe one day she would open it but right now she wasn't ready for it.

Arianna growled lowly in her throat and turned back to the Hallows.

"Right Ari, you're a Gryffindor, known for bravery. You defeated the Dark Lord for Merlin's sake what harm can one little conversation with Death do?" She reached out and grabbed the Hallows and at once she felt a chill spread down her spine. Turning around she came face to face with Death himself.

"I was expecting a scythe." Arianna said dryly, her green eyes narrowing slightly. The man before her was wearing a blue business suit with shiny black shoes to match; he had long black hair with a ribbon tied at the nape of his neck to keep his hair out of his face. He had brown eyes and a tanned complexion.

"Do you know how long I've wanted to talk to you? I mean really what's a guy got to do to talk a girl in this day and age?" Death asked dramatically waving his arms about. "I do have scythe actually but I'm trying to get rid of the stereotypical Death image. It worked for scaring people ages ago but now it's lost its edge."

Arianna stared her mouth dropped to the floor and Death just laughed at her. Arianna huffed and sat down in the soft armchair motioning for Death to sit in the other.

"So you not what I expected at all."

"What did you expect?"

"Oh you know all black and goth-like surrounded by fog and ominous music playing in the background and we can't forget the scythe."

"I can do that if you want me to."

"No! I mean you don't have too. Can I ask you a question?"

"You just did but I'm going to say yes anyway."

"Why choose me?"

"Why choose you? Well that's a loaded question really but you mean why choose you to be the so called 'master of death'. Well it's simple I admire you, not only have you evaded me more than once but you don't wish to have anything in return. You do not fear me nor do you wish to evade me forever and seek out immortality."

"So what does being your companion mean?"

"Well for starters you get to see my pretty face." Death grinned whilst Arianna had the urge to face-palm. "...Okay I'll be serious. You will be my companion and guard the Hallows from those who wish to abuse the power they give. This means that you can't die, unless you and I find a worthy successor. You won't appear to get any older than what you are now."

"How come the Hallows were scattered around before I got hold of them if only you and companion can choose a successor?"

"Ah that's because my previous companion began to abuse the privileges I gave him. So I scattered the Hallows around the world."

"Why didn't you just take them back?"

"Well you see if I could do that I wouldn't need a companion to safeguard them would I? I can't touch the Hallows anymore because they have left my realm. I am able to, shall we say transport, my body to wherever that Hallows are as long as they are together like now. Then if I find the person holding them worthy I allow them to become my companion and I am able to talk to them. However they can't see me until they accept the Hallows as a part of them, which is why it was so annoying trying to get your attention. Oh and I should tell you only you can see me."

"Why am I the only one who can see you?"

"Like I said I only appear once the Hallows are brought together and the person accepts them. It is through the power of the Hallows combined that I can travel from my realm into this one. However I am only visible to you due to the Hallows being yours."

"I see, this has been a lot to take in do you mind if I leave you for a while. I just wish to be on my own."

"I will go back to my realm. If you need me just hold onto the Hallows and say Death. Ciao for now bella mio." With that Death vanished and Arianna put the Hallows back on the table.

Arianna walked into her study and started shuffling through the paperwork she had. It turns out that being a Lady and a Senior Healer meant that she had a lot of paperwork to get through. She paused when she came to a piece of parchment that held on a couple of words 'Higurashi Shrine, Japan'; she had meant to contact them to see if she could visit. It would be nice to see some of my family adopted or not so with that thought in mind she quickly grabbed a quill and some spare parchment and began to write.

A/N: So this is it the first chapter. So the crossover part of the story won't officially start until the next chapter but I feel this chapter was needed first to sort out a few things.

So what did you think? Please let me know and review