Disclaimer: I don't own Naruto, Harry Potter, Ouran High School Host Club, Fullmetal Alchemist, or Black Bullet.

Summary: When Hayden Potter turns seven, she receives a letter from a school that teaches the Lost Shinobi (Ninja) Arts, including a scholarship that gives her information on her family. As Hayden accepts the offer in the hopes of finding somewhere that she can call home, she is brought into the hidden world of the Elemental Nations, the former countries now being allied and forming the academy. Hayden is made aware of her magical heritage on top of her ninja heritage, and Hogwarts will get a few interesting surprises when she reenters the magical world as a full-fledged ninja.

Warnings: Blaise x Hayden, female Harry, female Naruto, SasuNaru, spoilers, Uzumaki Lily and Hayden, some angst, some bashing (Dumbledore and Dursleys for sure, haven't decided on everyone else), yaoi or yuri pairings at some point…I think that's it. Sorry if I missed anything.

Enjoy!


Hayden smiled at the nice Ministry employee who had agreed to proctor Hayden's written OWL exams, though she was usually in charge of the Ministry archives.

"Good morning, Sheska!" the black haired girl greeted, having gotten to know the older woman fairly well due to her connection with Nina and the Elric brothers, who had worked with the woman before.

The brown-haired, bespectacled woman wore the typical blue uniform with yellow trim, though she had never been in combat at wasn't trained for it.

See, a few years ago the Ministry's archives had been burned in an arson attack and all of the records had been lost. The Ministry hadn't known what to do until they had found out that Sheska, who had worked as an intern in there and read every single book and document there, remembered every single word due to her eidetic memory.

It was an exhausting and mostly thankless job, rewriting everything and needing to ensure that it was all exactly correct, but Sheska ended up thriving on the pressure.

"Hello, Uzumaki-san." Sheska greeted her with a grin.

Hayden rolled her eyes playfully. The two were on a first name basis, but Sheska knew that it rankled the younger girl to be addressed that formally and frequently did it just to annoy her.

"You wanted your examinations to include the extra credit, right?" the brunette checked.

"Yes." Hayden agreed.

"Got it." Sheska checked something off on her clipboard. "Well, you're going to have a very busy week in front of you…"

A chill suddenly went down the young kunoichi's spine.


*Monday*


The written examination for World History (which included both magical and muggle events) was easy.

Unlike in the United Kingdom, however, there was also a practical portion of this test.

Sheska gave her a topic, in this case the Rise of the Roman Empire, and Hayden was given two hours to prepare a ten-minute presentation on it from memory.

Including visual aids (such as a spell that would bring up a 3-dimensional holographic image of the Roman coliseum, for example) in this presentation was her extra credit.

More difficult than the British equivalent, but certainly more indicative of the tester's knowledge. All the British students had to do was memorize facts, but this method required a more thorough understanding of the past in order to do so.


Hayden had asked for a mixed test for Ancient Runes and Warding, since she could blend the two types of magic together.

She was given a small wooden box, and was ordered to put the best protections on the objects that she possibly could.

When Hayden wondered if she could use some of the nastier traps in her arsenal, Mustang (who had come to observe) had assured her that she could indeed use any method she wanted in order to complete the test.

She used an intense combination of charms, runes, wards, Fūinjutsu (they had said anything), booby-traps if the box was opened before the traps were disabled, a jigsaw to solve, and even something that scanned her magical core, chakra coils, and nature affinity to make sure that it was Hayden opening the box. And since she'd been asked to protect the box itself, not necessarily whatever was placed inside, she carved a formidable array of even more runes and seals and enchanted it further, protecting it against both magical and physical damage.

The final result caused the Colonel to smirk and jokingly suggest that she should give her box to the goblins to test their curse-breakers and warding specialists.

Or at least she thought it was a joke. She had no idea, and wouldn't find out until months later, that he did indeed send it off and not even Gringotts' best could open or destroy it.

Even Fiendfyre, extremely dangerous and hard to control if the user wasn't competent, hadn't caused it any damage.

Needless to say her ruthless efficiency gained her more points and greatly impressed everyone who ended up testing the box.

Her efforts also had them recommend she consider becoming a curse-breaker, if she ever chose to retire as a ninja, and out of curiosity Hayden agreed to find a tutor in the subject, at least.


Tuesday


Hayden mused at the irony of taking an astronomy exam in the morning with the sun already high up in the sky.

Luckily, they had an enchanted planetarium rented out for just this reason.

True to Sirius' claim, Hayden sped through the test without a problem, confidently naming and answering questions about the celestial bodies, filling out the star charts, and doing whatever else they asked of her.

Still tedious, but at least it was easy.


Her Potions, Herbology, and Healing skills were also tested at the same time. The written exams were fine, but the practical was…nerve-wracking, so say the least.

She was given a patient with a simulated injury that required extensive treatment from a certain potion, and used healing spells to insure that he survived long enough to receive that treatment.

Then she was to go to the attached greenhouse, where hundreds of magical and muggle plants grew, selecting the ingredients needed for treatment, doing it quickly and making sure to get the best quality out of the available plants before moving on to the potions laboratory.

Then she had to actually brew the medical potion, taking great care in doing it safely, quickly, making sure that all ingredient preparation was to exacting standards, her timing was perfect, and that her potion was as efficient and long-lasting as she could make it. Extra points if she managed not to make it taste horrible like most potions did, which was difficult as most ingredients she could use to do so could very well effect the potion.

High stress, no notes allowed, no recipe to follow, she had to be meticulous and as quick as she possibly could without it effecting her work, and she had to decide for herself how to best treat the patient.

High standards.

When Hayden finished, she bottled up her potion and handed it to Sheska, who would then give it to the patient.

Unfortunately Hayden didn't get to see the results of her efforts, so she would have no idea how well she had done until she got her OWL grades.


Wednesday


Magical Theory was a written-only test, which she quickly finished, glad that Sarada had practically beaten the information into her mind since her sister had first started 'translating' them for lesser beings like Hayden to be able to understand.

After lunch, her next practical test yet again covered multiple subjects, this time Combat (known in the UK as Defense Against the Dark Arts, though the Canadians not-so-humbly thought that they did it better), Charms, and Transfiguration.

Her objective?

Last five minutes against an Auror. She didn't have to win to pass, and she wasn't expected to, either.

However, she had been given the same instructions to use everything in her arsenal, though she decided not to use anything that would kill or maim her opponent, so no weapons or, say, explosive seals. That was a shame, but it was necessary.

The man wasn't trained to counter attacks from a trained ninja, after all, and knew little of what they were capable of.

The Auror didn't hold back, and neither did she.

Hayden immediately created a few clones, using a chain of Kawairimi to replace herself with them, and them with each other, all at the same time so the Auror didn't know which one was real.

Both parties attacked.

The tell-tale POP that magical teleportation technique caused was useful to Hayden, however, as not only did it make it impossible for the man to sneak up on her, but she usually had an idea of where he was going to reappear. And of course she was continuously using the Shunshin, enhancing her speed with her chakra so that she wasn't easy to hit, either.

In a way, it was similar to how her battle with Lee Jr. went, expect while she used the Body Flicker, the Auror Apparated instead of just being that fast. The two were casting spell after spell, enchanting the area, putting obstacles in their opponent's way, conjuring and then animating things to attack each other, and generally making things difficult for each other.

Eventually the battle proved to be even more similar to the final match at the Chūnin exams, as Hayden managed to trap the Auror in a similar dome. Of course, this time she followed up with a disarming and stunning spell, bound him with ropes, and slapped a seal that she had designed to block off his magic.

The Auror, for his part, wasn't quite sure whether he should be impressed or disheartened that he'd been beaten by a thirteen year old. He didn't mind getting beaten by a girl, though, since Lieutenant Riza Hawkeye had viciously beaten the gender prejudice out of every single male who had ever met her.


"She's good." Lieutenant Colonel (formerly Major) Maes Hughes told his best friend with a grin, watching from the balcony above.

Mustang smirked smugly in agreement.

She had even managed to fit in the Patronus Charm, using the light from the animal to distract the Auror and blind him for a moment, giving her cover. All because him and Riza had mentioned that it would be considered extra credit, not because she actually needed to use it.

He had a habit of finding prodigies, it seemed. First Hayden (though arguably she fell to his lap, and he had nothing to do with her skill anyway), then Ed and his brother…


Thursday


Today consisted of Hayden taking her practical Arithmancy exam, using the numbers to predict what would happen during her next practical exam, which would be Muggle Studies, where she would venture out into the outer world and navigate the world for a day out, using Canadian money as opposed what she was more used to, and generally blending in.

Considering she'd gone on hundreds of trips with her family, and later friends, throughout the years, she 'blended in' just fine, and most of her predictions (like which bus she would need to take and what time it would be there) came true.

She wondered who on earth could possibly find a day out in the muggle world a difficult exam, but didn't particularly care.


Friday


The last day was more interesting than the last, consisting of her Care of Magical Creatures exam.

Befriending a Hippogriff. Choosing a diet for a sick unicorn. Identifying a werewolf and vampire out of a handful of photographs. Teaching a crup puppy a trick.

And for extra credit, negotiating with a rather temperamental snake and convincing it to donate some of its venom and already-shredded skins, milking it for the venom herself, so that they could get it for use in potions without being in danger of being bitten.


At the end of the day, Riza quietly took her aside and told her that they had one more test for her to take.

They had already informed her parents, asking for permission, only for them to reply that Hayden was legally an adult in their society and they would leave it to her to decide.

Occlumency.

Sirius had been teaching her in secret, and only her parents knew, though she had a feeling that Sarada and Satoshi suspecting something.

The meditation aspect was easy for her, as such exercises had been taught to her for chakra control, and unlike with those she didn't have the issue of too much chakra to mess with her control, since it was all mental.

After a long moment, Hayden agreed.

Time to test her skills against a magic-user, though she wondered if they could get more out of her than a Yamanaka could.

Doubtful.

An hour later, and Hayden determined that these guys had nothing on Inoichi-san, Ino's father.


Three Weeks Later


Hayden took a deep breath as she unfolded her OWL results.

Ordinary Wizarding Levels was typed out in ornate script at the top of the page.

Dear Miss Potter-Uzumaki,

Fudge had pointed out that Dumbledore might try and have the results declared invalid because it wasn't under the name Potter, even if that was no longer her name, so they compromised.

The following are the results of your O.W.L. tests. Your proficiency in these tests will determine the courses you are eligible to test for at N.E.W.T. level, which you will need for most careers in the wizarding world.

Like she cared about that part.

If you are unsatisfied with your results you are welcome to re-test for them after six months have passed…

Pass Scores:

O-Outstanding

E-Exceeds Expectations

A-Acceptable

Failing Scores:

P-Poor

D-Dreadful

T-Troll

Results with an asterisk (*) beside them indicate that the examinee earned extra credit.

And down below were the scores she had earned.

History-E*

Charms-O

Potions-O*

Healing-E

Combat-O*

Warding-O*

Herbology-O

Astronomy-O

Arithmancy-O

Occlumency-O

Magical Theory-O

Transfiguration-O

Ancient Runes-O*

Muggle Studies-O

Care of Magical Creatures-O*

Hayden stared at the sheet, unable to believe it.

Sure, she'd known that she'd be able to pass the minimum of five passing scores for her to qualify for emancipation in the magical world, but she hadn't expected to pass all of them!

Even the surprise Occlumency 'exam,' though she was surprised that counted.

Not that she had done it alone, by any means. Warding and Ancient Runes were taught to her along with Fuinjutsu, Sirius was her Astronomy and Occlumency tutor and also gave her tips on Transfiguration and Potions, Naruto and Sarada had taught her Herbology and Magic Theory respectively, Muggle Studies was easy due to trips with her family…

"So?" her mother asked eagerly, staring at her daughter's emotionless face.

Hayden slowly lifted her bright green eyes up to her mother's blue, waiting a long moment before cracking a grin. "We're good."

Her family cheered at the announcement, relieved that Dumbledore would have even less of a leg to stand on.

Naruto sent out the emancipation paperwork to Roy, who would process it as quickly as possible and could testify that Hayden met the other requirements.

The Colonel would then send a copy of her emancipation paperwork to Minister Fudge, who would eagerly receive it and snicker as he imagined the look Dumbledore would make when he found out.

After all, he couldn't overturn an emancipation, much less for a citizen of another country.

A short while later, Sasuke would glance over his daughter's scores before looking at her with a raised eyebrow.

"What's wrong, daddy?" the five year old Sayuri chirped from her booster seat.

"Your sister is being silly again." Sasuke told his youngest toddler, shaking his head.

"What'd she do?" Satoshi asked, blinking in confusion.

Naruto snatched the paper out of Sasuke's hands before he could answer, scanning it herself before face-palming.

"She only passed every single test she took, all but two of the fifteen with the wizarding equivalent of an A, and those with the equivalent of a B."

"You only needed five!" Sarada gaped uncharacteristically, wide-eyed as her twin shouted in glee.

Hayden shrugged sheepishly, not really seeing what the big deal was. The knowledge was good to have—as any ninja would tell you, knowledge is power—but she didn't need an examination to tell her that she was good enough to use those skills.

Sure, she'd passed with good scores, but what did it matter aside from proving her a competent witch?

Her life was in the Allied Nations village with her family, as a ninja. They might visit the magical world, but it wasn't her home.


Please review! :)

Can you tell I didn't really have very many ideas for the exams?

Hogwarts OWL and NEWT examinations happen over the course of two weeks, which I condensed into one week by having them evaluate more than one skill during some of her practical tests. Also, I know that OWL results for Hogwarts come months later, in June I think, but not only is the Canadian Ministry far more efficient than its British counterpart, but she tested during the off-season when they weren't very busy and Roy would've sped up the grading process anyway due to its importance.

Oh, and Sheska and Maes Hughes are other Fullmetal Alchemist crossover characters. I think I might have mentioned Hughes in passing, but I'm not sure.