A/N: This story was an accident. I was finishing up my Kyoya/Haruhi story and starting on a Mori/Haruhi story and thought I'd take a mental break and reread Harry Potter, and, well, the characters wouldn't stay put. Anyway, the story assumes familiarity with both the Ouran and Harry Potter universe and their characters. This is a fanfic, after all. Lastly, I'm rating this story T. I'll try to keep it at the same level as the Harry Potter source material, but that does include mild violence and occasional mild swearing.

~oOo~

The students all gasped at Dumbledore's announcement. "In times long past there was a legendary tournament held between the three major European schools of wizardry. This event has not been held in over a century, but if you are familiar at all with wizarding legends, you will have heard of the great feats of skill and courage exhibited in this competition. Three schools, three champions, three challenges. But the world grows smaller with every passing year and the vast distances that once divided even the magical world disapparate before our eyes, so the Departments of International Magical Cooperation and Magical Games and Sports have decided that this time we should include another school. There are several very fine schools of magic around the world and that cross pollination can only serve to strengthen us all. The choice of which school to invite was difficult, as you can imagine, so the Minister simply opted to start with the oldest schools in the east and work their way to the younger schools in the west. So this year, Hogwarts will play host to the legendary wizarding tournament and to three schools: the proud sons and daughters of Durmstrang, the lovely ladies and gentlemen of Beauxbatons, and the charming students of the elite and prestigious Ouran Academy of Witchcraft and Wizardry."

The Gryffindors all looked at Hermione. "Never heard of that last one. Where is it?"

Hermione shook her head. "It's only mentioned briefly in An Analysis of Modern Magical Education. It's apparently a private school in Japan."

"I thought the Japanese school was called Mahoutokoro," said Seamus Finnegan, their fellow fourth year. The others all looked at him in shock for knowing something only Hermione would. "What?" he said. "They're really good at Quidditch."

"That is the main Japanese school, yes. And all Japanese wizards are offered a place there, just as British wizards are offered a place at Hogwarts. But apparently there is another school, a private school, that your parents have to pay for you to go to. They are very selective about who they admit."

"Meaning...?" Ron asked.

"Only those with excellent social standing and those from filthy rich families."

"So they're like the Slytherins on steroids," Harry said.

"What are steroids?" said Ron.

"Oh, um, think of it like an Engorgio charm," Harry explained.

The Gryffindors all shuddered at the thought of anyone that was Slytherin, only more so.

"Maybe not," Hermione fidgeted. "The book was kind of vague, but apparently Ouran was a large part of why You-Know-Who's supporters never got a strong foothold in Japan."

~oOo~

"Ok, why are we going to England again?" Haruhi said

"I believe we explained it to you," Kyoya replied with his customary distain. "There is an important tournament to which we have been invited."

"I got that," she said. "It's just ... why would they choose us and why would we want to go? It doesn't seem like a particularly profitable endeavor." She tried to appeal to his pragmatic nature.

"Quite the contrary, it has the potential to be extremely profitable to each of us, though for different reasons. As you know, Honey-sempai is the heir to the Haninozuka clan, the most accomplished and dangerous combat wizards in Asia, likely in the world. But because of his small stature and his fondness for cute things, he is not taken seriously by certain people. Being chosen as champion and winning this tournament would remove those reservations.

"The Morinozukas have been faithful retainers to the Haninozukas for hundreds of years. It is unthinkable that Honey-senpai would put himself in danger without Mori-senpai offering to stand by his side or take his place. Also, there are many in Japan who believe the Morinozukas are merely servants and pale imitations of the Haninozukas. For Mori-senpai to be chosen and win would raise his family's stature and establish them as a major house in their own right.

"Tamaki's grandmother has never accepted him into the family, let alone acknowledged him as heir. Winning this would force her to do so with the added benefit that because it would be inconceivable that the Suoh heir was illegitimate, she would also be forced to allow his parents to marry as they have wished since before he was born.

"And I - I have always been forced to compete against my older brothers, my tally of accomplishments weighed against theirs with their seven and ten-year head start. But they have never done anything on this scale. And because of the age restrictions, they will never be able to."

"Yeah, about those age restrictions," she said. "The last two years of school only, right? The twins and I aren't even eligible to enter. Why are we going?"

"Duh," said Hikaru. "It'd be really boring to be stuck here if the rest of the club is there."

"Yeah," his twin Kaoru chimed in. "Without Milord to make fun of, there'd be nothing to do."

"That's great for you guys, but I don't want to go!" Haruhi said.

"And precisely how are you going to pay your debt if you are here and we are all there?" Kyoya said. "I agreed not to charge you interest as long as you were actively working on the principal, but if you don't come with us, I will be forced to add a year's worth of interest on to your debt."

She made a noise of surrender. "So I'm just supposed to go and be your cheerleader?"

Tamaki's eyes lit up. "Our little girl is going to cheer me on?" In the theater of his mind, he pictured Haruhi in a gauzy, pink dress batting her eyelashes while saying "Oh Tamaki-senpai, you're so brave, you're my hero. I just love, love, love watching you in action. But you mustn't allow yourself to be hurt. I couldn't live if anything happened to you!"

"You needn't fear, my love," he said gazing into her eyes. "I will always return to you."

She threw her arms around him and hugged him tightly.

"Your concern means so much to me!" Tamaki took her in his arms and swung her around until she

started to get sick.

"Mori-senpai!" she called out.

In what was by now a well-practiced move, Mori walked over and as Tamaki swung her past, intercepted her and lifted her free, leaving Tamaki twirling on his own.

"Thanks, senpai."

"Hn." He nodded and smiled.

"Do I at least a get to be a girl while we're there?"

Tamaki's eyes lit up. "We'll get you dresses and hair bows and..."

Kyoya intervened. "Considering this will be covered by international media and the students at Ouran will be following it closely, I think for now we should keep things as they are."

"Of course you do," Haruhi deadpanned. "So when exactly are we supposed to go and how are we supposed to get there?"

~oOo~

It was a cold, clear evening; the last fading light of the sun taunted a pale, transparent-looking moon shining over the Forbidden Forest. The Hogwarts students filed out of the castle arranged by their houses and years doing their best to look forwards and respectable but out of the corner of their eyes, they were glancing around at each other.

"Who do you reckon is going to be the Hogwarts champion?" Dean Thomas whispered.

"Fred and George said they're going to give it a go," Ron whispered back.

"Are they old enough?" Neville said.

"No, but that's never stopped them before."

"I heard Ernie McMillan say Cedric Diggory from Hufflepuff was going to try," Parvati Patil said.

"Oh please, that twit, Hogwarts champion?" said Ron.

"You could stand to be more like that twit. Top student in his class, Hufflepuff seeker, and he's a prefect," said Hermione.

"Do you have a crush on him? Or is it just because he's handsome?" said Ron scathingly.

"Excuse me, I don't like people just because they're handsome!" said Hermione indignantly.

Ron coughed with a sound which came across an awful lot like "Lockhart!"

Professor McGonagall glared at them, bringing silence for a few minutes.

Ron stared at the gates of the castle. "How d'you reckon they're coming? The train?"

"Too far for the Japanese to come by train," said Hermione.

"That rules out broom sticks," Harry commented.

"A Portkey? Or they could Apparate?" suggested Ron.

"For the fiftieth to time, you can't Apparate inside the Hogwarts grounds," said Hermione impatiently.

Harry looked thoughtful. "Your dad said wizards can't resist showing off when they get together…"

"Aha!" Dumbledore called out, "The delegation from Beauxbatons approaches!"

Almost lost against the evening sky, a blue and gold shape soared overhead skimming over the treetops. The curious shape revealed itself to be a gigantic powder blue carriage drawn by a dozen enormous winged horses. They flew in a wide, smooth arc around the lake before landing on the lawn before the Hogwarts students. Harry just had time to see the door of the carriage bore a coat of arms (two crossed, golden wands, each emitting three stars) before it opened. A very large, very elegant woman stepped down and walked forward towards Dumbledore, extending a hand glittering with jewels. "My dear Madame Maxime, welcome to Hogwarts."

The students scanned the sky, waiting for the next party to arrive, but instead were met by a strange muffled roar like a waterfall.

"They're coming in at the lake!" yelled Lee Jordan, pointing down at it. "Look at the lake!"

The surface of the lake, smooth only moments before, was now roiling, bubbling and heaving, sending great waves crashing to the shore. Then, in the middle of the lake, a whirlpool appeared. A large black pole began to rise out of the heart of the maelstrom, and then they saw a flag, a mast, rigging and sails.

"It's a ship!" Harry said to Ron and Hermione.

The magnificent vessel, all dark wood and dark sails, rose ghostlike from the turbulent water, cresting the whirlpool and riding the waves to the shore of the lake. An anchor splashed in the water, and a solid black oak plank made a thunk as it settled onto the bank. A man, Dumbledore's age by the look of him, strolled down the plank like the master of the universe, swathed in a cloak of sable and silver fur. He held his arms wide as he approached Dumbledore. "Albus!"

"Igor!"

The two men embraced, then the Durmstrang headmaster turned to Madame Maxime. "The Flower of the South is lovely as ever, I see. Has our other guest arrived yet?"

"Not yet," replied Dumbledore.

" 'Ave you ever met zis man?" Maxime asked.

"I have not, but it appears we have only a few minutes to wait." Dumbledore gestured to the cleft between the hills.

Out of the East came an indistinct pink and white cloud. At first, they all thought it was just that: a mist catching the sunset. Coming closer it became apparent that it was something more substantial; a flock of small exotic birds or perhaps butterflies. But as it approached nearer still, the pink and white torrent revealed itself to be a mass of cherry blossoms borne on the East Wind. As they reached the grounds of the castle they surged upward and began to swirl on air currents no one could feel. They did not settle on the ground as the magnificent carriage had but rather found a low-lying cloud and began to condense in tighter and tighter until they resolved themselves into a miniature baroque palace. Another spray of blossoms tumbled out from the door, delicately piling on each other in swirls that caught the setting sun. Pink blossoms to turned rose gold and transformed into a magnificent staircase with gilt and wrought iron railings.

The man who emerged had more fair-coloring than they expected of a Japanese man; fair skinned with light brown hair. But what made the eyes of the muggle-borns go wide was his manner of dress.

An immaculately tailored business suit.

If it hadn't been bright white with a powder blue tie, he could have walked into any boardroom anywhere in the world and not been out of place. The way he carried himself, he might have been able to get away with it anyway.

He descended the stairs, the pink and white marble-looking steps releasing the scent of cherry blossoms as his feet touched them, and stopped before Dumbledore, executing a precise bow. "It is a great honor to meet you, Professor Dumbledore. Madame Maxime, Professor Karkaroff." He added the last two as an afterthought. "Introduction of the students is to be at the feast?"

Dumbledore nodded. "Which, since we are all here, is now."

~oOo~

The Hogwarts students were seated in the Great Hall, chattering excitedly, noting that each house table seemed a little longer than usual, as if inviting someone to join them; but they fell instantly silent when Dumbledore started to speak. "Tonight, we are granted a rare honor: to welcome into our midst students from three of the finest schools of witchcraft and wizardry. I know you will make them all welcome. And with that, please join me in welcoming the Beauxbatons Academy of Magic and their headmistress, Madame Maxime."

The door of the Great Hall opened up lightly, as though a breeze had pushed it and a troop of slender young figures danced into the Hall. Their very movements seemed to generate a soft, lilting music as though their waving hands ran like a bow over invisible violins and the air brushing past them played as a flute. They paused about a third of the way down the aisle between the tables and gave a wave of acknowledgment to their right, then continued down until two thirds down the aisle, they gave another wave to their left. They danced to the front of the hall, bowed to the high table releasing a flock of conjured bluebirds then to the music of the birds' song pirouetted in a short but intricate ballet to the acknowledge the students of Hogwarts who broke out in applause, the boys especially. Dumbledore graciously kissed Madame Maxine's hand and led her to her seat at the high table. The Beauxbatons students glanced around the hall smiled, and went to the Ravenclaw table.

"And now," Dumbledore continued, "Please welcome our friends from the north, Durmstrang and their Highmaster Igor Karkaroff!"

The door again burst open, forcefully, decisively; this time revealing a group of teens solid and strong as the Beauxbatons students had been slender and graceful, in sharp, almost military uniforms. Each held a staff in his right hand with which he struck the ground when he moved, releasing sparks and a wave of raw magical energy, electrifying the onlookers. They moved with purpose, each more powerful than the last, until bringing up the rear was...

"Blimey!" Ron breathed. "It's him! It's Viktor Krum!"

The Durmstrang students spun their staves in an aggressive pattern then dropped them and ran to the front of the hall like gymnasts on the mat demonstrating that their formidable size did not hinder their agility, culminating when one pulled out his wand and conjured a snake of flame that circled once about the group then transformed into a eagle which flew upwards and dissipated.

The Quidditch players all immediately began searching for something for Krum to autograph. Hermione rolled her eyes at their moronic fan-boy behavior. "For heaven's sake," she muttered, "he's only a Quidditch player."

Hogwarts students at each of the three remaining house scooted down invitingly. The visitors scanned the hall knowingly, then went to the Slytherin table.

"And finally," Dumbledore said, "I present the students of the Elite Ouran Academy and their Headmaster, Chairman Suoh."

The doors of the Great Hall opened a third time, slowly this time, almost seductively. A shower of rose petals emerged from a soft white light and wafted into the hall. Afterward the onlookers realized the petals must have been multiplying midair because they never varied in density, but the shower grew until it filled the hall. The rose petals vanished as soon as they touched anything but left behind their sweet fragrance leaving one the feeling of being in a pleasant garden. The Ouran students themselves entered on a cloud. Perhaps they were walking or perhaps they were riding the cloud, it was impossible to tell, but it gave you the most peculiar feeling that you were coming to them and not the other way around.

They reached the front of the hall and gave a very precise low bow to Dumbledore, then turned and gave an equally precise but not quite as low bow to the other teachers at the high table, then turned to the student body and gave a third, yet again less deep bow to the students. They straightened, surveilled the hall and smiled ever so slightly. These boys were stunningly, breathtakingly handsome, every one of them.

Ron was about to make a snide comment that it was anticlimactic compared to Durmstrang when every girl in the hall let out a little squeal. Hermione and Lavender practically shoved Ron and Harry off the bench trying to make a more obviously inviting space beside them. Harry looked up to the head table, hoping Professor McGonagall would signal her house to behave with a little more decorum, but no, the Japanese wizard had been seated next to her. He said something to her and - for the love of Merlin, McGonagall went pink! No, Harry thought. Until these pretty boys all turned out to be Lockharts, they were going to be stuck.

"You shouldn't be staring at those guys like that," Ron whispered to Hermione.

"You mean like all you boys have been staring at the Beauxbatons girls?"

"We have not!" Ron shot back. Harry looked around. Yes, they had. The hardcore Quidditch fans may have been watching Krum but every other guy in the hall was watching those girls either openly or out of the corner of his eye. Ron tore his eyes away to prove a point. Harry heard him say under his breath "Please go over there." Harry was inclined to agree, but no such luck. The tall blond boy led the Ouran students right to the Gryffindor table. He leaned over Alicia Spinnet and said in a melodious voice, "May we join you?"

"Please, it would be our pleasure."

He sat down on the bench next to her and picked up a spoon, draped it longways across his right palm then traced over the spoon with his left fingers. He whispered into his hands "Effloresce." The silver spoon bloomed into a silver rose. He handed it to her. "Thank you, fair princess."

Alicia blushed as she accepted it while Angelina, Katie, Lavender, Parvati, Hermione and even Ginny all let out a musical sigh. Down the table, Romilda and every other girl eyed them jealously. The rest of them boys sat down, one of the younger guys next to Hermione. "Hi, I'm Fujioka Haruhi. Except, wait, Europeans do that backwards, given name first, family name second. I guess that makes me Haruhi Fujioka."

Hermione found herself disarmed by the artless manner of this Haruhi. "I'm Hermione Granger, and these are my friends Harry and Ron." Harry sent a silent thank you to Hermione for not using last names. Maybe he could get through dinner without being gawked at for a change. She then introduced the others around them as the food appeared on the table.

"Oh wow," Haruhi said, impressed by the variety of food. Everything from traditional English black pudding to French bouillabaisse to sauerbraten to sushi and sashimi. "This is amazing."

Harry looked around the hall. The Beauxbatons students were making a show of shivering in the English climate and being cold and were being a little snooty and only eating the French food. The Durmstrang students were being standoffish no matter how much Malfoy was smarming up to Krum. These Ouran guys were flirting outrageously with the girls but at least they were friendly. Maybe Gryffindor had got the best of the foreigners. He nodded towards the rose. "He did that without a wand."

"Oh, yeah he's really good at that. Actually, pretty much anything to do with flirting." As if it needed to be said. Every girl at the table had her head cocked over just a little to one side with an insipid smile her face.

"I've never seen that transfiguration before." Harry said, stupidly irritated at the girls' behavior.

"Probably not," Haruhi said. "Tamaki-senpai invented it."

"He invented it?" Hermione said.

So much for them being Lockhart level idiots.

"It's not a hard one," Haruhi said. "You're only changing shape, not substance. To turn it into a real rose, even he'd probably need a wand." Haruhi pulled out a wand and ran it along another spoon. "Effloresce." Hermione watched as the visitor held the spoon-turned-rose close to the Gryffindor scarlet tablecloth where it reflected red and slowly twirled it. "Kyuusyuu..." It kept the reflected color and after two or three rotations, the bloom was a brilliant scarlet hue on a silver stem. Haruhi started to hand it to Hermione then pulled back. "Wait, your colors are red and gold, right?"

Haruhi looked around for something gold then flicked the wand upward. "Accio candle." One drifted down and hovered close. Haruhi ran the stem through the flame. "Sazukeriro." Hermione watched as it absorbed the pale gold color with his bits of orange and red near the edges.

The black-haired boy with glasses looked down his nose at her. "The tip of your stem is blue."

"Sorry. Absorbing color from living flame is not the easiest thing to do."

"If you can't do it correctly, kindly don't do it in public."

Hermione started to defend Haruhi but then realized that McGonagall had said much the same thing to Neville only a few days before.

Haruhi made an exasperated noise and said sarcastically, "I apologize if my poor sorcery made your spell look imperfect senpai."

"You should," he said. While there was extreme arrogance in the comment, there was no malice, so the Gryffindors took it to be teasing. Which it was. Mostly.

Pointing at Kyoya, Harry said "So he invented that spell?"

"Yeah, his first project in his first year Magical Research Class was to extract color from things that have no pigment: the sky, the ocean, fire, even some butterfly wings."

"His first year?"

"Our school is set up differently from yours. An elementary school, three years of junior high and three years of high school. Assuming we all finish up at the same time, that makes our first years equivalent to your fifth years. But only Class A takes that subject first year and if we're to be honest, most of Class A couldn't have done it. There's a reason he's the top student in his year."

"So you think he'll be your Champion?"

Haruhi shrugged. "Depends what the judges are looking for. Honey-senpai is definitely the most powerful wizard and the most skilled at combat magic."

"The tall one with black hair?" Lavender eyed him admiringly.

"No, the short blond. The tall one is Mori-senpai, his cousin who is also very skilled at combat magic and pretty good at nature magic, especially anything to do with animals. He's also amazingly centered. Nothing rattles him.

"Kyoya-senpai is the smartest and most focused. He can think his way out of anything, and Tamaki-senpai is the most creative."

"And the rest of you?"

"The rest of us are too young to enter. But see, we are all in a club together. And if half the club is gone, there'd be no reason to hold meetings. Which meant the twins were going to get bored. And the concept of what the Hitachiin twins would do if they were bored for a full year was too terrifying for any of the teachers to contemplate. So they got permission to come. And they said they wouldn't go if I didn't go, so here I am...oh my god, this food is good. Whose is this?"

"Uh, that's a Beef Wellington. That one's ours."

"I'm transferring to Hogwarts."

Harry snorted. Even though it wasn't as cool as sitting next to Krum would have been, he kinda liked this kid. He glanced at the Ravenclaw table still a little envious. Despite that as a fourth year he wouldn't have stood a chance with those sixth and seventh year Beauxbatons girls, it would have been nice to sit next to them. As if to emphasize the point, one of the Beauxbatons girls got up and shook out her hair which fell in a silvery blonde cascade to her waist. Harry had an overwhelming desire to reach out and touch it and he might have if he hadn't seen Ron moving to do the same. He slapped Ron's hand down to cover his own movement.

"Oh, thanks mate." Ron blinked. "Harry, she's a veela!"

"Of course she isn't!" said Hermione tartly "I don't see anyone else gaping at her like an idiot!"

"I'm telling you, that's not a normal girl!" said Ron. He looked at the newcomer. "You see it, right?"

Haruhi looked over. "Um, she does have really pretty hair." The tone was only moderately intrigued. Hermione was relieved that there was at least one male in the room who wasn't swept off his feet.

The girl in question looked around the room and then her large blue eyes settled on the table next to Ron and Harry. She didn't so much walk as glide across the room towards them. Ron let out a gurgling noise.

"Excuse me, are you wanting ze bouillabaisse?" she asked.

Ron gaped like a fish, but Harry covered for him. "Please have it, if you like. It was excellent." He handed her the tureen and she gave him a smile that made him want to lay at her feet. She turned back towards the Ravenclaw table but stopped midway, made a noise not unlike the one Ron had made, dropped the dish, shattering it and dousing herself, Harry and Ron in soup. "You are Kyoya Ootori?" she said in a trembling voice.

"I am," the boy with glasses replied.

She let out a little noise.

"When did you become the popular one?" Hikaru said.

She looked up and saw who made the comment. Her eyes grew wide and wider as she scanned the surrounding boys then began fanning herself with her hand. "Renata! Lysette! Kyoya Ootori est ici! Le Club à hôtes d'Ouran est ici!"

Not just two girls but four turned so fast they almost knocked the Ravenclaw boys off their bench in their rush over to the Gryffindor table. "Vous êtes Tamaki!" One of the girls fluttered. "I am Renata, my cousin ees Renge Houshakuji. She transfer from Beauxbatons to Ouran. She tell us all about you and send us pictures and she say zat eef you hold a tea, we must come!"

"Vill you hold a tea?" The girl next to her pleaded.

"If it will please my fair princess," Tamaki gazed into her eyes. She melted on the spot.

"Uh..." Harry gave Haruhi a sideways look trying to figure out how to phrase the question.

"You remember how I said we were in a club? It involves a lot of squealing girls. Ok, my turn," Haruhi tried to ignore the girls and change the subject. "I can't help but notice there are four tables each with a different color tablecloth and everybody at the table is wearing ties that match their tablecloth. Not a decorator choice I gather?"

"No," Hermione answered. "Hogwarts was founded by four witches and wizards, each of whom valued different traits in their students. We still honor their preferences; your first night here, they place a magic hat on your head and it reads your mind and places you in the house that best matches your personality and traits."

Haruhi appeared to consider. "It's not the weirdest thing I've ever heard."

"How do you do it?" Hermione asked.

Haruhi paused. She had a feeling these Hogwarts students might not like what she was going to say.

Kyoya watched her, amused. "Go ahead, Haruhi." She tried to give him a warning look, but either he didn't catch it or he didn't care. He answered the question for her. "You must understand Ouran was founded to train the future leaders of the magical world, so we divide each year into classes: A, B, C and D and which class you are in is determined by lineage, social standing, and ability. Rank within the class is purely based on ability and grades. So for example Honey-senpai over there is the top student in Class 3A and the heir to one of the most ancient and powerful wizarding families in Japan while Haruhi here, even though only a commoner, was placed in Class 1A due to intelligence and talent."

"Commoner?" Hermione said, unable to believe her ears.

"Yes," Tamaki enthused, joining in the conversation, "every year Ouran offers a scholarship to the most brilliant student we can find who would not otherwise qualify to attend and offers them a place in Class A. And if the can stay on top, they can stay at Ouran!"

The Beauxbatons students all let out a murmur of approval at the magnanimity of the Japanese school. The Gryffindors looked less certain. "So if the scholarship student is the most brilliant in their year, where is the scholarship student from your year?" Hermione asked pointedly of Kyoya.

"He finished his first semester fourth behind myself, Tamaki and Ayame and so was sent back to Mahoutokoro."

"But you mustn't pity him," Tamaki said. "It's a very fine school in its own way. I think it's marvelous that commoners can get a decent education. Long live the poor!"

The Beauxbatons students began clapping. The Gryffindors looked at Haruhi, whose eyebrow was twitching. So much for the good impression. Under his breath Ron muttered "you weren't kidding about them being Slytherins on hemorrhoids."

Harry didn't bother to correct him.