Disclaimer: Harry Potter is the property of JK Rowling, and High School DxD is the property of Ichiei Ishibumi. This is a fan made non profit work of fiction. I don't claim the rights to anything that you may recognize from other series as well.

Warnings:

1. While there will be no lemons, this fic is rated M for language, violent themes, and explicit situations.

2. The personalities of some, or most, characters have been changed either slightly or majorly to better suit the story.

3. I wrote this intending it to be a crack fic, something that I don't take very seriously.

4. This fic has a central OC. If you don't like that, stop right here. Also Harry is OP as fuck. Did I mention that this fic is not to be taken super seriously?

5. Expect Cliches. Oh, and I made some changes to the lore of both fandoms.

6. Contains a (hopefully) different Dumbledore. And any bashing that I may do will be just for lulz.

7. I have never read the DxD light novels. Any information I have about any character that the anime has not covered comes from other fanfics and the wiki.

Chapter One

Mephisto was an old devil. He had been alive for quite a few centuries, millennia even. He had seen the rise and fall of empires of both man and devil.

Despite all of this, he was quite a peaceful devil. He had, in the early 6th century AD, formed a strong friendship with a human who would go on to become Merlin Ambrosius. Mephisto had given and trained Merlin in magic. But, to be honest, he had stayed mostly out of the whole Round Table nonsense, except for one small time when he told Mordred that Arthur would definitely just hand over the crown to him.

While what happened in Camlann was what followed, but to be honest, Mordred was an idiot of the highest order to have believed him, especially when Mephisto was drunk.

But he was getting off topic. For a human to be able to do magic there were four ways. One was the simplest: natural. You were born with the ability. Second was if a supernatural being (such as Angels or Devils, or even gods or certain youkai) could awaken the potential within a human, by permanently transforming their DNA to be able to perform magic. Thirdly a human, especially if they were genetically predisposed to be able to use magic, but couldn't, they still could awaken the power if they underwent enough stress (physical or mental). This was extremely rare, and happened only twice before, at least according to what Mephisto knew.

And then there was number four. The luck of the draw. All Sacred Gear users, upon activating their Sacred Gears, unlocked magic. They may not be able to use it to the full potential, but they still unlocked it nonetheless.

What Mephisto was looking at in front of him, was a small four year old boy, who had one. The Boosted Gear. The boy was fast asleep, on the couch in his lavish office in Berlin.

As Mephisto wondered what he could do, his mind wandered off to how he had found the child two hours ago.

'Number four Privet Drive,' Mephisto thought to himself as he teleported in front of the house. Tannin, his Queen, had told him that there was a young boy being abused.

The boy who held the Boosted Gear. Apparently Ddraig had contacted Tannin through their Draconic Telepathy, and had told him to come to the rescue ASAP. Mephisto didn't know the full story yet, but had jumped straight at the opportunity of rescuing the boy.

There was only one Boosted Gear user who had been abused in recorded history, and when he had too much, the results were a uncontrollable Juggernaut Drive that had immediately been activated. An entire country had turned to rubble overnight. But that was multiple centuries ago, and Mephisto had no intention of letting that happen again.

And besides, the opportunity to have the Red Dragon Emperor on his side? That was too good to pass up. If he would not have gone, Azazel would have. While Mephisto had a friendly relationship with the Fallen Angel, that didn't mean that he was without faults. Azazel would probably dissect the kid.

What he saw wasn't exactly new to him. A four year old, getting kicked and punched by an overweight man. Compared to some Devil families, like the Baels, this was actually quite tame.

Regardless, given that he didn't want any incidents taking place, Mephisto had swooped in, taken the young boy and left, without saying a word.

Was it kidnapping? Of course. But quite frankly, Mephisto wasn't exactly going to ask. Had they been a normal family, then he would have bothered to explain the situation, and implore them that the kid needed training. If they refused, then he'd resort to mind manipulation.

But that was here nor there. And he felt killing the humans would be too much of a chore.

That brought him to the present. The small boy slept soundly as his injuries healed. Mephisto wasn't even doing anything; it was the boy's own magic. As a Devil who had been walking amongst the humans since the Great Faction War all those thousands of years ago, Mephisto could tell with absolute certainty that this kid was a very powerful one.

Sure, he was only four. But his clots had long since dissolved, leaving behind the red, freshly formed skin. Magic always protected its user, well under normal circumstances, and this was a prime example. Ddraig wasn't probably doing anything either. The Dragon didn't directly help his host when he was being beaten down, and that hadn't changed.

His legs were still broken, though.

Mephisto looked up as a raven haired beauty entered the office. The bronze skinned woman was tall, almost six feet tall. Her voluptuous figure was barely contained by the maroon robes she wore. Her golden eyes glanced over Mephisto, before widening as they looked at the child.

"Oh my Satan! Did you go around beating little kids?!"

"Of course not, Irma!" Mephisto snapped at his Bishop. "If that were the case, why would I bring him here instead of finishing what I started?"

Irma shook her head as she immediately went to work on the boy. She was an exceptionally talented healer, and ran her own medical school, which mostly accepted Devil students. Probably for the best, given that it was located in Hell.

Irma calmly listened as her King told her of the circumstances. Anger rose within her eyes as she heard that this child was being abused before being rescued by Mephisto.

She was, however, not that surprised at the lack of apparent sympathy from the old Devil. He had fathered multiple children, but not many Devils made for good parents. Sure, he had children, and a few were alive today, but it wasn't as if Mephisto had bothered to actually know them well.

"You know, Mephisto, you aren't exactly a model parent, especially if you want to train him. It is important that he spend some time with his own peers as well as have a good role model. Here he has neither."

Mephisto looked at her oddly. "Nonsense! I am a great parent! Why, just look at my son Dustin!"

"Damien." Irma corrected, knowing full well who he was. Damien was the product of an affair between Mephisto and Druella Paimon, but the Paimon matriarch refused to acknowledge his existence. The result was Irma practically raising the boy by herself, given that Mephisto was mostly an absentee father.

"Right. Damien. He must be nineteen now!"

Irma glared at him. "Ninety."

"Of course. And having fun with his girlfriend, no doubt!"

Irma threw her hands up. She may not have given birth to him, but she loved Damien as her own son. "Damien's gay and happily married to a werewolf! Do you know anything about him?"

Mephisto looked at her with a confused expression. "Uhhhh... He is a furry too?"

Irma just shook her head. "My point exactly. Here's my idea. I take him, and you train him."

"But you said he needs friends!"

"I know a few people with children his age! Most of my staff have grandkids his age!"

Mephisto gave her a look. "Wait! I know!" He said as he disappeared.

Irma looked at where he had been with a shocked expression, just as her King arrived moments later. This time, there was a sleeping girl with him, around the age of Ddraig's host. She had dark hair, and a roundish face. Of course, her face would probably become more angular as she grew up.

"For the love of! You can't just go around stealing human children!" Irma glared.

"Technically she's a pure Veela."

"Not the point!"

Mephisto was unbothered. "Is it kidnapping if they are orphans? I mean, it's not like that their parents are going to miss them..."

"Oh for fuck's sake, Mephisto!"

"What? If you had seen the state of the orphanage, you would have taken all the children! And not just her! They didn't even have a DSL connection! That orphanage was even run by priests! Who's to say that she won't be — oh right, she's not a boy. Never mind the last point."

"Put. Her. Back." Irma challenged her King with a glare.

Unfortunately for her, Mephisto had grown rather used to her death glares — the old devil wasn't exactly afraid of many things these days — and hence didn't exactly do as she asked.

"And how exactly are you going to make me, my dear Bishop?"

"By taking both of them away from you!" Irma said with a grin as a teleportation circle appeared underneath the sleeping children, whisking them away.

"Well played," Mephisto said as he stroked the stubble on his chin. He then sighed. Despite the fact that Irma was the fourth human to be turned into a Devil by the Evil Piece System all the way back in the 9th century, she had still retained her humanity. "Ok, look. You can raise the kids. The orphan stays with you. However, I train them in magic. Myself. And you have no say in that whatsoever."

Irma held out her hand. "Deal."

Mephisto grinned, "You know how devils seal their deals… with an open mouth kiss."

"Yeah, I'm not falling for that again." Irma didn't let up her glare. "Seriously need something like HR in here…" she muttered under her breath as she held out her hand.

Mephisto grudgingly shook her hand. "Deal."

He hated the fact that she had found out that Devil Pacts were mostly verbal.

At seven years old, Harry Potter was already among the more powerful humans. Or that is what Mephisto felt. A lot of that could be attributed to the fact that he had awakened the Boosted Gear just a year ago. Well, fully awakened.

Mephisto had learned that Harry Potter was an anomaly. His magic, when he was being abused, had in fact awakened Ddraig's soul, but not the Sacred Gear. Such a thing was impossible, as the soul inside a Gear could only awaken after the activation of said Sacred Gear.

Mephisto had chalked it up to the faulty System, especially given the way Michael was running things. For all his power and ideals, the oldest angel still wasn't his father. He was not trained to control His System.

Over the three years, he had reluctantly gotten closer to Harry, and even to the Veela girl he kidna—saved from an orphanage. The two were near opposites in terms of personalities; Harry was shy and introverted, Sapphire the Veela was very outgoing and outspoken. She was named such for her piercing sapphire blue eyes.

...that was all Mephisto knew about the differences in personalities. In terms of magical power, however, at this age, Sapphire outranked Harry, if the boy wasn't using his Sacred Gear.

Mephisto watched passively as the two sparred, only using their physical prowess.

Harry ducked under a wild kick, jumping around her and tried to punch her sides. Sapphire blocked the blow, her icy blue eyes boring into his emerald green. A feral grin came to her face as she slammed Harry in the stomach, sending him back as he coughed.

Mephisto knew that this was important. He needed to know which one of them was physically stronger so he could instil fear of the other into the weaker one. Then some subtle manipulation behind the scenes, and they'd be challenging each other for ever.

He had blatantly lied to them that they had to keep in shape as that way their magic would grow stronger. Magic actually had no relationship with physical prowess. Magic was its own entity, and could only be strengthened by exercising magic, not muscles.

He chuckled to himself. He wondered how long till they figured that out. Oh well, at least they were being trained in martial arts. Then again, he needed to start training them in weapons as well. Perhaps he could let Tannin do that.

Four more years had passed.

Harry had been formally introduced to Tannin, and they had hit it off. Tannin even called him 'Little Dragon' at times. Tannin and Ddraig alike had helped Harry learn the way a dragon breathed fire. While it was no where as hot as Dragonfire, it was still hot enough to melt stone.

Sapphire, on the other hand, had been introduced to an old friend of Mephisto's, one who was also his second Bishop. Gregor Faust, the once legendary mage. The Veela girl had learned the hard way that Faust was even more of a sadist than Mephisto when it came to training.

The reason for dividing them up was simply because their current mentors had asked Mephisto to do so.

In the past year, Irma had finally gotten full custody of Sapphire and Harry (bureaucratic hell took on a whole new meaning in the actual Hell). Despite this, Tannin mostly hogged Harry all to himself, claiming that having even a Sealed Dragon for company was still better than talking to Devils all the time.

Mephisto wasn't even allowed to play even a small role in their parenting.

All because he wanted to drop the kids on an uninhabited island and told them to survive for 6 months. Sure, no one complained when the Leviathans practically use a similar method to train their kids (on a much harsher scale — the Leviathans used familiars hunted the kids to death), but when he did it it was 'child endangerment' and 'negligence'. He felt it was double standards.

Mephisto was brought out of his musings when Harry and Sapphire came to him, holding letters in their hands.

'Oh shit. Totally forgot about the magic schools...'

"Why did you apply us for—"

"I'm going to stop you right there," Mephisto said, taking a sip from a glass of whisky that he held. "You two were registered in those schools by your parents, a long ass time ago. They don't exactly have any other choice, given the backwardness of the human magical world."

"What do you mean? I don't have any parents!" Sapphire asked. "Irma's the closest thing to a mom!"

"Of course not, you just materialised into existence," Mephisto said sarcastically. "Fucking kids... Okay, you did have mommy and daddy who either didn't love you enough or are dead. Because they lived in a magical society, they were required by international law to register your sorry asses in these schools. Something that I still don't understand to this very day."

Sapphire didn't exactly react to the insults; and neither did Harry. You quickly developed a very thick skin around Mephisto. That, and this was pretty tame.

"Of course, they even have this wonderful tracking system that identifies any magical child not born to magicals that automatically registers these kids in their schools. And no, neither of you will ever go to these institutions where they teach you how to kill your sense of wonder and imagination." Mephisto said.

"But they must be some good to these schools right?"

Mephisto looked at Harry. He always looked on the bright side of things. It was annoying. "Not necessarily. Take Hogwarts, for example. You received a letter from them. You see, Hogwarts has one very big flaw. They think they're hot stuff. Sure it is the best school for magic in the world. This isn't an achievement though. They're the best because their competitors are so incompetent in every sense."

Mephisto pointed at the very fancy letter in Sapphire's hands. "Take Beauxbatons. If you can't get high quality of education, just ensure that your school is so fucking fancy that no one notices that you don't have a single competent teacher."

Sapphire frowned. She had hoped that the school that reached out to her was better than Harry's. It was a matter of pride more than anything. The two competed in nearly everything.

"Of course, neither of these two come anywhere near the travesty of a school that is Durmstrang. If a mass murdering pedophile were to run that place, oh wait, Igor Karkaroff is one."

Mephisto shook his head. He had met nearly every single headmaster of every school, though only Albus Dumbledore was able to figure out what he truly was. And who he was. Mephisto's respect for the human had increased ever so slightly that day. Which still wasn't saying much.

"Who?" The kids said together.

"A fucked up moron."

Harry piped up. "You call every human a moron."

"That is because I have yet to meet a human who isn't one, present company included. And before you ask, yes, Merlin was one as well."

"But-But Merlin was a genius," Sapphire muttered. Merlin was her role model of sorts. Mephisto looked at the girl.

"But Mephistoooo!" Merlin whined. "I am 60% sure that I can turn Arthur into a cute girl! With a thirty percent chance I can change him back without complications…long lasting ones that is!"

"Sure. A huge genuine genius. And he became that way by not following daft morons who run outdated schools." Mephisto pushed down his memory of the legendary wizard. He did not have it in him to destroy Sapphire's hero worship of the man. She was still a child, and despite his harsh words, he fully believed that she should stay that way for as long as possible.

It was of no surprise to Harry that Mephisto said all of this with extreme nonchalance, as if he didn't even care. And knowing him, he didn't. Which was why Harry didn't bother asking a question that Sapphire did.

"So why didn't you fix it?"

Mephisto gave Sapphire a look. "Because, my dear sweet girl, this may come as a surprise to you, but I don't quite care. I am not certain when they started becoming more idiotic than the average human, especially when they began spouting nonsense of blood supremacy. But that is their own fault, and if they want to be stupid, then that is their choice."

Mephisto shook his head. "Now. Dear children, scurry along. Gregor tells me that you still haven't mastered control of fire. To a Veela, that should be second nature. Unlike Harry, who has withstood Tannin's flame."

Harry snickered at a pouting Sapphire.

"Of course, Tannin was using the weakest possible flame of his, which cannot even warm my tea. A dragon should not be afraid of standing even in the hottest of fires."

This time Sapphire gave him a condescending grin. "Ha! Sucker!"

"But I'm human…" Harry whispered dejectedly.

"A human with the soul of a Heavenly Dragon. The fact that you can breathe Dragonflame without any side effects is proof that your body is adapting to the draconic soul inside you." Mephisto lectured.

It was really very interesting to observe. Mephisto had Irma take multiple samples from Harry – blood, urine, even his CSF — and all pointed towards one simple fact.

Harry Potter did not possess any side effects of being the child of a man who was probably born between relatives, given how the Pureblood Society tended to be. Mephisto was quite sure that at least any child born in the House of Black in the UK would be confused by now as to call his sister a sister or lover. Probably that child would even be confused if his mother was the sister.

Oh, and Harry was slowly turning into a human-dragon hybrid of sorts. Mephisto was unsure where the process would stop. He had speculated this as a consequence of Harry awakening Ddraig even before he unlocked the Boosted Gear.

Of course, it could also be possible because of the Sacred Gear itself. Mephisto would need to consult Azazel. But he wasn't going to. Azazel was as devious as Mephisto himself, and hence he didn't particularly trust the Fallen Angel Governor.

That, and that asshole denied to this day that he had knocked up one of Mephisto's daughters.

Mephisto watched the kids leave, looking at the letters in his hand. He wondered if he should reply or not. It wasn't like they could do anything if he didn't send a reply. But that Dumbledore was a stubborn human. He would use anything to track down a potential student, even more so given that the rumor was that Harry had backfired the killing curse onto that wannabe dark lord.

Beauxbatons, unlike Hogwarts, Mephisto felt, had an even more of a moron in charge. It was pure fact that half-giants and giants didn't have the same intellectual capacity as an average human. They had already fucked up by putting one in charge. If it weren't for the extremely powerful wards that discovered all magical children that reached the age of eleven, Maxime wouldn't even have found Sapphire.

With that in mind, he decided to reply the Hogwarts letter alone. It wasn't like Beauxbatons was going to send a representative. For a school that claimed to be the most 'accepting' and 'diverse' they really didn't help newcomers.

Or, he could just send the two to the different schools and then have them tear apart these places from the inside out. Mephisto dismissed that idea. He really needed to cut back on the alcohol, he thought as his glass of whisky automatically refilled itself.

Dumbledore was relaxing in his office in Hogwarts as he lamented over the past decade. It had been a major blow when he had found out that Harry Potter had been kidnapped, rather unexpectedly.

Knowing that it would be a very powerful wizard to have broken past his blood wards, Dumbledore believed that Harry was as good as dead. The good people of Magical UK believed that he was lost at sea, having been gone with his relatives overseas where the ship had capsized due a storm. He had even sent the Dursleys out in the sea and promptly sank their vessel to further prove his tale should anyone make the connection between him and the Dursleys and have enough brains to use a phonebook.

Dumbledore laughed at that. The people of Magical UK were sheep. They needed to be told what they should believe in. He had tried his damnest to change that, and had failed. He had seen it when Gellert rose to power, even though he was quite a charismatic man. And very handsome and dashing. His eyes were so beautiful that it made Dumbledore weak to this day.

But Voldemort wasn't like that. During his rise to power, Dumbledore had tried to convince the Order to fight back, but then that bitch Trelawny had given her fake prophecy that had turned everything against him. The Order and Voldemort believed that was real, and James, Lily, Frank, and Alice had promptly gone into hiding. They all began to believe that Voldemort was truly invincible until a 'Chosen One' could appear.

That didn't last long, given that the Potters were dead and the Longbottoms tortured to insanity. Dumbledore didn't know how; extreme pain for a prolonged period would have sent their bodies into cardiogenic shock that should have killed them a lot earlier.

And by then, Voldemort was dead, or more accurately turned into a wraith and Dumbledore had lost his faith in humanity.

But Harry was, most likely dead.

Or at least that was what Dumbledore believed till now. Hogwarts had sent his letter to him, but the address was in Germany. Dumbledore could only hope that he was safe and would send a confirmation back. Again, not because he personally cared, but Harry was a symbol, and Dumbledore planned to use him to show the world that Chosen Ones do not exist. Perhaps then everyone would wake up from their fantasies.

But when he had received the reply, Dumbledore's blood turned cold in fear. Sure, Harry had declined. That wasn't really an issue. He could persuade the boy if he so desired. The issue was the real sender.

Mephisto Pheles.

Dumbledore had met the old devil once. In the early thirties, when he had accidentally offended the devil. The result was that Mephisto had aged Dumbledore physically, from a handsome young man to a really old, wizened looking man. It had ruined all of the intense sex he would usually have with Gellert. The impressive thing was that his life-force and vitality weren't even affected by the curse, but only his physical appearance. Well, there was something else that had also been affected, but Dumbledore did not pay attention to that problem. It wasn't like he used his 'wand' anymore in any case.

Dumbledore didn't really remember what he said to the devil, just that it was something related to how Dumbledore was hailed as the next Merlin. Perhaps he was pranked, perhaps that had not sat well with Mephisto.

Either way, Dumbledore had learned not to cross him.

But now… Harry Potter was in his custody. Did he kidnap the Boy-Who-Lived? Or did he find Harry while the boy was on the run and took him in? These questions were running in his mind. Dumbledore didn't know what to do, which was a first.

Perhaps he should try praying for once. Surely there were angels if devils existed, right?

Oh, who was he kidding. Like angels would ever help him.

He, who had stayed out of the first war when Gellert practically ran unchallenged, only because he couldn't find it in him to go against the man he loved. By the time he realised he was too far gone, the destruction was immense. And even then, Dumbledore didn't even have it in him to kill Gellert.

Then, when he began to notice the darkness in Tom Riddle, he had ignored it, hoping someone else would as well. That had backfired spectacularly. Voldemort was born, and the rest was history.

Dumbledore thought his entire existence was worthless, given that he had achieved practically nothing. He hated the fact he was worshipped like a messiah, but kept appearances that it didn't affect him. And because he hated the way Magical UK operated, he had decided to change it.

First, by becoming the Chief Warlock. Fat lot of good it did, given Lucius Malfoy and his ilk practically stomped any and every change he tried to bring. Then he thought of influencing the youth. Teach them how to form their own opinions and actually use their minds.

Once again, Malfoy's influence stopped him at every turn. He was forced to keep Severus Snape as his Potions Professor, and practically ignore all complaints against the man. Then, in a more recent time, he was forced to rehire, or rather, not complain when the Board rehired Quirell.

Dumbledore was no fool, and he wasn't a slouch in the Mind Arts. He could practically feel Voldemort in Quirell's turban. But, once again, he couldn't find it in him to stop the wraith.

At this point, Dumbledore had given up trying to change or save the Wizarding World. He didn't want to be the hero, ever again.

Sapphire smiled to herself as the Blue Shell hit Harry's Link. At sixteen, had undergone her Veela puberty, which was a very painful process. She looked like an eight year old one night, and a young woman in her early twenties the very next morning.

Her Allure had also kicked in at the same time, and Harry had been attracted to her almost immediately. Normally he had very high mental shields but he was still a teenager. And Sapphire knew that she was very beautiful. All Veela were.

Well it wasn't really fair to say that he was the only one who was attracted to her. Possessing Ddraig's soul and having undergone a partial Dragonification that made him highly resistant to most toxins and diseases, as well as changing his eyes to having a vertical slit instead of the circular pupils, he also exuded the typical Dragon's Aura that just draws every one in.

Unlike the Veela allure, the Dragon Aura was capable of attracting every thing, from potential mates to powerful enemies who wanted to challenge him.

It was very confusing to both of them, not knowing if they liked the other person for who they were or was it because of their respective auras.

They had yet to fully act on their feelings, but said feelings were promptly ignored in the intense game of Mario Kart.

"You bitch…" Harry growled lowly as Bowser overtook him, making Sapphire giggle and she promptly flipped him the bird in response.

"Oh yeah? You know what's funny?" Harry said as he picked up a new power up that ended up on the Blooper.

"You two are still playing that game?!." Mephisto yelled as he suddenly came in the room. "Because it'll rot your brains! Literally, because I put a curse on it."

Harry and Sapphire promptly dropped the controllers and glared at the devil, the intense round of Mario Kart forgotten.

Mephisto barked out a laugh. "The looks on your faces! Oh man. I didn't curse it to rot your brains!"

The two glared harder.

"Enough of that. Come with me, brats. I'm sending you on a mission!"

"When and where?" Sapphire asked, excitement creeping in her voice. "And what is it? Rescue a princess? Assassinate a terrorist? Destroy a revolution?! Or start one?"

"Shut up and listen. First, it's probably nothing. Some idiots summoned me using my Seal, so we're going to find out what these morons want."

Harry looked at Mephisto oddly. "You still send out your Seals? I thought you stopped giving those in the early 1600's?"

"These morons must have found one, fully intact, and used it. That being said, because it is a genuine thing and I could get into legal trouble in Hell, literally, if I don't answer, I have to do this shit. Except you brats are doing it for me."

Devil Seals. It was how Devils made pacts and granted wishes to humans. No matter what the wish or the pact, the Devil in question would always be the real winner. You did not even need magic to summon the Devil, you just needed the correct Seal. Each Devil had their own unique Seal made when they turned sixteen. The design wasn't necessarily unique, but the Magical signature was.

Harry and Sapphire glared at him before summoning their battle clothes, immediately redressing themselves. Harry's was a lightly armored red and black shirt with paddings on the wrists and shoulders, and blue cargo pants that were lined with runes to bolster his speed and strength. There were two swords strapped to his back, both of which he designed using Mephisto's help. One was lined with runes for holy magic and the other with demonic. He had named them 'Celestine' and 'Discordia' for… obvious reasons.

Sapphire preferred a sleek blue robe that matched her eyes well, and hugged her curvaceous body to better accentuate said curves. She tied her long dark hair in a neat pony-tail to avoid it getting it in her eyes. Like Harry, her robe also contained carved runes, but they were designed to support her magic rather than physical prowess. To top it all off, she wore high heels that also had runes to help her walk and run as if she wore regular shoes, and simple white gloves that were for show only.

"Lazy bastard," Harry grumbled as he walked past Mephisto, causing the Devil to chuckle in response.

One teleportation circle later, the three of them were standing in front of a middle aged couple, who were no doubt very wealthy given the fact that they were in a mansion and wore expensive clothes and jewellery. The woman was a plus sized fifty year old, with graying hair and dark eyes. The man was even more fat, having a bald spot and a thin moustache. He wore glasses that covered his grey eyes.

And technically, only Mephisto was visible, as he didn't want them to see Harry or Sapphire till the contract was set.

"Oh dear! It worked!" Exclaimed the woman.

"Yes, yes, get on with it," Mephisto cut in before the husband could reply. He hated them on principle, because they had summoned him. "What do you fat morons want?"

The woman was immediately outraged, but the husband cut in. "Is it true that you grant us anything we desire?"

Mephisto raised a brow. "I am not going to waste my time making you slim or your wife more attractive. Quite frankly that requires a specialist who is more than willing to help a hopel—"

"You DARE?!" The wife interrupted, before she found her voice silenced.

"Hush now. But I suppose that I must ask, what is it that you desire?"

The man was stunned for a second, not believing his eyes as his wife tried to talk. But obviously couldn't. He regained his bearing. It wasn't wise for them to anger a demon, especially one they'd summoned. "We want you to find our daughter. She was taken from us and the police were of no help. The kidnappers have not even asked for a ransom!"

Mephisto rolled his eyes. "That's even more boring." He snapped his fingers and the air shimmered, the invisibility spell breaking down into light particles. Harry and Sapphire became visible, and they stood at Mephisto's side. They did not react, and neither did the old couple.

"Now, I am Mephisto Pheles, one the oldest, most powerful Devils to ever exist, have a Dragon King and four Ultimate Level Devils in my Peerage, and I myself am capable of performing such a trivial task from your very home. Of course, I could send the most competent lot to find your daughter and have her found within the hour."

Despite his hurtful and offensive comments earlier, the couple smiled happily, looked elated even. This was all for a moment before it all came crashing down.

"But... because you called me here for a meaningless task, I'm not going to do any of that and instead send these two greenhorn kids to do this instead."

For the first time, the man looked angry. "WHY?" He wailed suddenly. "Why get our hopes up then?"

Mephisto smirked. "Because you love your daughter."

"Of course I do! She means the world to me!"

"But I couldn't care less. Anyway the contract is set. They'll find her. And I will get an IOU from your fatass later. Ciao!"

With that he disappeared, leaving behind his students who waved at the couple awkwardly.

Harry stretched his senses. His nose twitched, trying to smell the scent he had gotten from the kidnapped daughter's clothes.

Tannin had told him that Dragons were the pinnacle of evolution, and now, Harry could believe why. Dragons loved flying. As a result, their skeleton was filled with pneumatic spaces that allowed for faster flight. Of course, the atcual flight was aided bt their immense magical power, allowing such a hulking beast as a dragon to defy gravity. Their eyes were incredibly sharp, to notice their prey from high up. And to add even more detection to their senses, an incredibly sensitive nose.

Even for a partial Dragon like Harry, who had all of these things but highly reduced in strength, meant that he could easily track her down using her belongings.

That, and Harry was sure no one could afford this expensive perfume in the slums of… whatever city they were in.

"Why is it always a warehouse?" Sapphire said as they came across one. "So cliché!"

Harry smiled. "It does make our job easier."

Sapphire looked at him. "I suppose. Wait." She said as she stopped him from entering. Harry was more of a on-the-go sort of a man, but she preferred to be cautious. She was a very good sensor, and could sense a few powerful people behind that door.

"Three powerful signatures. The strongest one is… well, I'd say as strong as you, but you can boost yourself..."

Harry smiled. Except this was a battle hungry smile. He loved a good fight.

"Then let's meet our foes, shall we?"

With that, he opened the door.

"Don't worry, you'll be safe here," said a young Chinese man with blue eyes and short black hair. He was handsome in a 'pretty boy' sort of manner. He carried an air of authority about him.

The girl he was talking to nodded. She appeared to be a fifteen year old girl with long blonde hair and striking blue eyes. She was also very well developed. "I can take care of myself, CaoCao."

CaoCao smirked good naturedly. "I'm sure, you can. But you have not fully awakened your Sacred Gear, have you?"

"Oye. Two intruders have showed up," said another blonde haired girl who wore orange armor. "They seem... powerful." She readied herself as a sword appeared in her hands.

CaoCao just sighed as an ornate spear appeared in his hands. This was his Sacred Gear, the True Longinus. "Doesn't matter Jeanne... I am sure we can defeat them."

"Oh look!" said the male of the pair, smirking as he saw the three of them. "Fate/Stay Night cosplayers! We have a Lancer, and a Saber! Let's see how long before the Lancer ga shinda kicks in!"

CaoCao twitched. "First off, that's inhuman, suggesting that I would die so quickly. Secondly, I'm not a Servant, you know. No one is going to use Command Seals to make me kill myself."

There was a loud silence.

The black haired man who had entered looked at him, his emerald green eyes wide. The admittedly beautiful brunette just face-palmed, as did Jeanne.

"Did… did you just understand me?"

Harry was surprised to see that his opponent was a fellow weeb. "I almost don't want to fight you now..."

CaoCao pinched his nose in annoyance. His response was quite frankly a bit of an impulsive reaction. "Sorry, but who are you? You feel human but you are not entirely so."

"Harry Potter, at your service. And my lovely partner here," He gestured towards Sapphire who just nodded. She frowned internally. Harry's partner. Well. She was going to change that. Eventually. "Is Sapphire. Anyway, we have been contracted by—"

"My step parents to find me?" a cool voice cut in, belonging to the fifteen year old who watched them intently. "I suppose they told you that I have been kidnapped. But that's not true. I ran away with these guys, see."

"Ok, glad we cleared that. But we have a job to finish."

"Well then, Harry," said CaoCao. "I can't just allow you to take her. After all—"

"She's her own person and should make that decision herself?" Harry interrupted.

CaoCao twitched again. "Not what I was going with, bu—"

"What do you mean by that?!" The blonde kidnapped(?) girl asked. "He's right! I came with you of my own free will and I can leave you of my own free will!"

"See, Lancer? The blondie agrees with me!" Harry said with a smile.

"The 'blondie' has a name!" Said blondie snapped. "Its! Lavinia!"

"Well then, Lavinia," Sapphire cut in. "You see, the contract we made was for finding you. We didn't promise that we would return you. That would have cost them extra..."

Lavinia visibly relaxed. "Oh good. I'd rather not go back to those guys. They're not the best parents. I'd rather have devils as my parents."

"No you don't," said Harry and Sapphire with flatly. "Believe me, you don't."

CaoCao raised his brow. "Oh? That's what I felt from you? A half devil? But then this spear would be more than sufficient to kill you."

Harry shook his head. "No, we're human and veela respectively. It's just that we were raised by a couple of devils. And again, no, we aren't a part of their peerage."

Mephisto had been quite insistent on Harry not joining any peerage. It had something to do with his dragonification. Apparently, Evil Pieces turned the target(?), victim(?) whoever, into fully fledged Devils, while keeping their inherent powers intact. Humans were converted into Devils 100%, but youkai or other species would retain their abilities to utilise their unique powers and skills while still being Devils.

It worked wonders for most species, but not Dragons. Dragons by themselves were more powerful than Devils. When Tannin had been resurrected as a Devil, it had not made him stronger, but rather, given him an extra weakness: his weakness to holy magic and attacks meant to kill devils.

"So, the Devils are keeping you hostage then, forcing you to do their dirty work for them. How despicable." Jeanne commented.

"You are half correct," Sapphire replied. "This particular devil is forcing us to do his dirty work, but not because he's holding us hostage."

"Okay, enough talk." CaoCao cut in. He stood in front of Lavinia in a protective pose. "You want her? You go through me."

"You sick bastard! She's not some prize to be won!" Harry said. Sapphire bit on her lip to prevent herself from giggling.

CaoCao now looked uncomfortable, as even Jeanne was glaring at him. "I'm not! What I meant was that she is under my protection!"

Harry didn't let up. "Oh sure. My bad. I'm sure that your intentions are completely pure and in her best interests."

"They! Are!" CaoCao yelled, frustration finally getting the better of him.

Harry smirked. "What are they, then? Your intentions, I mean."

"Yeah, CaoCao, what exactly are your intentions when you helped me?" Lavinia cut in. To be honest, she had run away on her own and was found by CaoCao and Jeanne who offered to help her. She had agreed as she had no other option. She didn't exactly have any funds or resources to help herself.

CaoCao was silent for a while before he glared at Harry. Jeanne's eyes widened, when she understood what Harry was trying to do. "CaoCao wai—"

Her warning came too late when CaoCao charged towards Harry.

CaoCao grunted as he stood up. He had been knocked back by Harry, and quite effeciently. He may have sounded and acted like an eccentric idiot, but CaoCao learned that Harry was just playing him. He had used the element of surprise to knock him around, leaving intentional openings during the fight, hoping that CaoCao would take them.

And of course he did, only to be entrapped by the green eyed man and knocked back by a powerful lightning attack that erupted from his body.

"You are quite good, Harry Potter. I underestimated you." Not to mention, he didn't even use the swords. Curiously, the Longinus didn't cut him as deeply as it should have. Almost like Harry had an extremely tough skin.

Harry smiled. "It seems like I also may need to get serious..."

"Ho? You can take my spear on?" CaoCao readied the Longinus.

Harry drew his swords. "I suppose that this makes me a Saber. You know that I now have the class advantage."

"We'll see about that!"

"How about you two stop measuring up your dicks?" Sapphire cut in. She was standing with Jeanne and Lavinia, confusing the two men.

"Yeah, we came to a conclusion when you two idiots were fighting. After consulting with Mephisto of all people," Jeanne said, trying to wrap her head around that. "We decided that Lavinia would be going with Harry and Sapphire. Something about her education into magic and how to use her Sacred Gear."

Lavinia nodded. "And besides, Jeanne has my number. If I need to leave, I will give you a call, mmkay?"

CaoCao and Harry looked at them incredulously. "What just happened?"

A/N: I know I said that this is not a serious fic, but I couldn't help myself when I added the non-serious plot lines. I do have a general idea as to what I wanted to do with this...

I know most people don't like OC's, but only Sapphire has a main role. Others like Irma are background characters and won't be featured much.

Also, this was meant to be a triple crossover with the Fate franchise where the Grail war would eventually be revealed to be a gigantic prank set up by Mephisto and Zelretch. But I thought it would be funnier if Harry was (taken hostage by) addicted to the Fate franchise. So expect a lot of Fate references.

Hope you all enjoyed!