Hey, this is EBP here. This is my first crossover.

I would like to thank Koume Hoshi, my awesome beta but i would like to clarified some things.

One, I don't own Katekyo Hitman Reborn or Harry Potter, i do own however my OC family and flame ideas.

Sorry that i had to use my ocs but it would make more sense if they are and besides they have an minor role.

Enough rambling now:

Let's the story Begin

Chapter One: Strange Names

"Names are not always what they seem."- Mark Twain

Tsuna sighed, rubbing his temples. He was currently on a plane with his family, Shimon's and Diavolo Guardians. Who the Diavolo Guardians are he doesn't know, but so far they seemed pretty normal… for the mafia. Timoteo, grandpa as he called him, looked at them with a serious look. "At my old friend's school they are currently having problems and this year is going to be a huge one." His tone made everybody listen to him. No wonder he was Vongola Nono.

"Okay then I understand how it involve Tuna-fish and Enma but what about us, Diavolo?" questioned Sayuri, Diavolo Decimo. Ever since she had met him, about a few hours ago, she has been calling him Tuna-fish; Tuna-fish since it sounds so familiar to his full name Tsunayoshi. Tsuna could already tell that their personalities are going to clash.

"I've decided to form a school that mixes with Tsunayoshi-kun, Enma-kun and Sayuri-san including their friends, seeing they are the sky, earth and universe… All of them mix well," explained Timoteo. Everybody looked at him stupidly? Why does he need the tenth generations of the Earth, Sky and Universe?

Timoteo ignored their stares and continued, "The tri-wizard tournament is where they will probably strike, but my friend asked if we can find out who and why and at the same time protecting the competitors , each of your families will be participating in it as well."

Enma paled. He doesn't like fighting and neither does Tsuna. "P-participating?"

Timoteo nodded, confirming his fears. "Yes, each one of your family members have to. There will be three competitors from the wizard schools and we three will be participating for the time being. We'll say that the separate families, aka 'schools', just recently merge. However, the rest of you shall protect the normal students and investigate the problems at hand." Everybody sighed. You can't disobey the boss; even Hibari Kyoya can't. Hibari respected the Boss of Vongola for an unknown reason.

"Although you can't use magic like they can, your flames are good enough to make them believe you. I explained it to my friend." Timoteo thoughtfully said.

Hiyori, the older twin of Sayuri, raised her hand. "You've never told us - what are flames? We in the Diavolo don't know about it."

A mysterious smiled appeared on the boss's face, "All you need to know is resolve."

Harry, Ron and Hermione were amazed at the other school's entrance into Hogwarts. There was a rumor that there was another school coming also but he didn't know which. "Hey look!" Ron exclaimed pointing up into the sky. Everybody looked up in awe. There were twenty-three colored-flames speeding up, clearly showing their separate colors. The students and teachers were amazed - they had never seen those colors used in that way.

The orange sped up along with universe - black and reddish-brown zigzagging through the air landing on the roof. It revealed two boys and one girl and they had already jumped off the roof and patiently waited for their friends to land down. The colors, bright ruby red, crayfish-red and maroon-red/purple flames pulsated in the sky before stopping once and landing behind their leaders. The students, whom were revealed to be teenagers, were a little boy and a girl that produced the red-flames, stood proud behind them. The students looked up at the sky to see a sky-blue, sapphire-blue and Prussian blue raining down turning out as two boys and a girl. They landed behind the red-flame students.

"So colorful," murmured Hermione, who was enchanted by the colors of the flames.

The next color set was neon-green, forest-green and Phthalo green sparkling in the dull gray sky. The creators of the green flames was three boys, the youngest creating the bright neon-green. They landed behind the blue-flame creators.

Harry noticed that the colors were gone but respectfully the first ones to land were their leaders, though they didn't look like it. "Whoa, they have weird hair colors," mumbled Ron next to them noticing the teens and kids that landed. Harry had to agree, they are weird and unnatural.

The next colors were sun-yellow, gold-yellow and goldenrod yellow blinding them on the gray-sky. They landed each making a crater. The teens who made the flames were two boys and a girl who were incredibly fit, athletes as far as they could tell. Each of them landed behind the previous teens. The colors after them were desert-brown, two indigos and a cream-white. Once they landed they lined up behind the previous flames, the two indigos, cream-white and tan revealed to be one girl and three boys. Lastly the last colors were Wisteria Purple, Pearly-Purple and Byzantium Purple looming over them. The Hogwarts students shuddered, as if the temperature gotten colder. Once they reached the others, it revealed to be a boy and two girls. The students looked up to see if there were more.

There weren't.

When more Orange and Sun-Yellow flames appeared out of nowhere in front of the first teens in the three rows, Dumbledore walked up and smiled. "Bloody Hell," Ron stated in awe, he had never seen that before until now.

"Thank you for having us," said the orange, whom was an elderly man with a gently smile.

"It's no problem, my friend. A little show I see," Dumbledore mused in response..

The old man chuckled, "Yes, their leaders decided to show off their abilities and their separate teams,"

Dumbledore laughed. "Ah I see. We welcome you to our home for the next year, Timoteo!" he happily said. Timoteo nodded and guided the three rows inside.

"What schools were that, Hermione?" Ron immediately questioned as he couldn't see the last school any more.

"I don't know," the brunette said.

"Come on guys, we should get ready for the banquet." Harry urged. He was getting curious and that could mean trouble.

A few hours later was the banquet; all of Hogwarts were sitting at their tables respectfully. They just witnessed the flower-birdie dance from Beauxbatons, a weird fire from the Durmstrang and finally they saw the next school. "Now I welcome you, our friends from the East, Vitale Academy of Fouco and their headmaster Timoteo Vongola!" Timoteo walked forwards and stopped a few feet from Dumbledore as if he was trying to protect him.

When the doors opened up to eight students, seven boys and a girl, everybody became silent. The girl and a boy with pineapple-like hair made an indigo flame, then disappeared only the indigo flames were there to take their place. Next the eight-year old boy created the neon-green flame while another boy with white-buzz cut hair, created sun-yellow flames. Both of them looked at each other in agreement, punching their flames making it collide with the indigos then disappearing as the other two did. The boy with octopus-silver hair formed ruby-red flames with another boy with shaggy-black hair. They tossed their flames into the combined one then disappearing following their peers' suit. The boy with neat black hair formed the Wisteria-Purple flame and simply flicked it to the combined fire and disappeared. Now there was only one boy left, the shortest teen was gravity-defying brown hair. The flame floated to the boy whom formed the orange flame on his forehead, wearing metal-like/leather gloves. He let the fire float, he raised his hands up putting it into his forehead, making his gloved-hands on fire. The Students gasped - he's on fire! The boy gathered the rainbow-flame, making the orange flame fuse with it. He raised his left hand that has the flames, while the flames spark around them beautifully forming the Vongola Emblem. The boy walked towards his headmaster, arm still in the air as If he was carrying the emblem to Timoteo.

The doors opened once again to reveal four girls and three boys. All of them separately made, Universe-Black, Cream-White, Prussian-blue, Goldenrod-yellow, Maroon, Phthalo Green, and Byzantium-Purple flames. The Prussian-Blue and Goldenrod-yellow flame creators effectively punched their flames towards each-other merging with it. The Cream-White flame boy and Phthalo Green boy kicked it to each other merging it together. The Byzantium-purple and Maroon flames looked at each other, the ten-year old boy high-kicked his flame while the girl simply punched his flame, causing them to combine as well. There were a total of four flames. The Prussian-blue and Goldenrod-yellow girls kicked their combined flames to the boys' combined flames. Not giving the flames a break, the boys punched it together to the other combined flames. The child did a back-flip while the older-girl did a front-aerial flip. The combined flame flew, while the other six disappeared, only leaving the dark-brown/dark-gray curly haired girl. She closed her eyes while her shoulder that everyone failed to notice had the Universe-Black fire, and it grew bigger than her. The Compound Flame flew right into the Universe-Black flame. The flame compound grew bigger and away from her shoulder to above her head to form the Diavolo Emblem. The girl grabbed it and walked towards the other emblem and her headmaster.

The door opened once again to reveal two girls and five boys. They separated themselves into two unequal rows. The large boy and black-tailed girl created forest-green and pearly purple flames while doing a flip. (Harry was surprised that the large boy could do such a flip) combining flames and ending up on the other sides. The other girl and glasses-wearing boy formed a gold-yellow and crayfish-red flames, as they did the same thing as the last pair did. Two boys, one with a pony-tail and the other with giant muscles created sapphire blue and desert-tan and also did the same thing as the other two pairs did. The six teenagers disappeared, leaving the blood-red haired boy by himself. Slowly and carefully he created his orange/red-brown flame absorbing the other flames that flew to him creating the Shimon Emblem. He walked towards the others, the gravity-defying hair boy and obviously foreign girl, and simultaneously they moved their arms together to make their creations crash into one another making another emblem that said Vitale.

The teens and children that had disappeared now reappeared with a proud and victorious smile, taking the table that was right next to Harry's. The boys and girls smiled before bowing to Timoteo and walking to the table to join their friends. "The Vitale Academy of Fuoco, that was quite a performance," complimented Dumbledore.

Timoteo gave sheepish smile to his old-friend. "It shows that though coming from different academies, they can combine and be one…. It was really their idea," Timoteo admitted before walking towards his school.

Everybody clapped, the display was interesting and pretty. "The Vitale Academy of Fuoco, the masters of fire. We welcome you into Hogwarts with the Durmstrang and Beauxbatons! The Tri-Wizard tournament is a great time. During this year, we can have fun, but there are dangers as well." Dumbledore said suddenly becoming serious.

"That was surely amazing, right Harry?" Hermione asked.

Harry nodded, agreeing with her. "But I wonder who they are and why they are separated." He said biting into his chicken leg.

His best-friends agreed, "Yeah, I've never heard of their schools before…" Hermione trailed off.

"Yeah, they seem fishy." Ron agreed.

Hermione rolled her eyes at Ron's statement, "It seems like we have to know more about them." Harry concluded.

Tsuna sighed, massaging his temples, "Damn, that was nerve-wracking." He turned towards his mist guardians, Chrome and Mukuro. "Thank you for casting that illusion; it really helped." Chrome slightly blushed while Mukuro did his signature laugh.

"Though we agreed to become your Mist-Guardians, we do have to make a clear impression with the other school." Mukuro said. Tsuna rolled his golden-cinnamon eyes.

"They are really show-offs." Muttered Gokudera, stabbing his chicken while Yamamoto laughed.

"Yeah." His laughter was contagious so he made the others laugh.

"I think all of you guys just created fan-clubs but I gotta admit, it was interesting. Plus I still can't believe it actually worked!" Sayuri giggled.

"What I'm more surprised is that they didn't ask about our youngest, Lambo," replied Gokudera.

"And Cyrano," added Benoni. The Diavolo's Magnetic-Field Guardian. Lambo, Tenth Generation Lightning Guardian, and Cyrano, Tenth Generation Black-Hole Guardian were the youngest. Normally, Wizard schools didn't allow eleven and under.

"Yeah, but oh well," they sighed. Lambo had matured from a crying Lambo to a less crying Lambo that calls his peers nii like Tsu-nii, while Cyrano matured from whining Cyrano to no-whining Cyrano.

"It will be a long year, but we'll be together, so let's make a toast!" Tsuna suggested. Everybody agreed, raising their glasses and together then taking a sip from it.

"Dumbledore said that everybody seventeen and up can enter, but who will to the extreme?" questioned Ryohei. He also calmed down a lot throughout the years. He still says his catchphrase 'extreme' but he doesn't yell it. Everybody looked at each other; they knew that Lambo and Cyrano couldn't do it unless they use the ten-year bazooka.

"Why not all of us seeing that we are the only ones here and basically over seventeen or at least seventeen?" Hiyori sighed, taking another sip from her cup. They all knew that she was right.

"Chrome, you shall not enter it though." Mukuro laughed but seriously stated. Chrome nodded, understanding why she couldn't. She is strong and has the potential to be stronger, but she just wasn't ready for this kind of task yet.

The baby they had all forgotten, whom you should never forget, Reborn said suddenly, "Starting next week, you shall be trained… All of you." He stared at the Diavolo whom cursed immediately. "The Acrobalenos will be arriving for you next week, seeing that they are busy this week." Reborn finished.

Toshiaki Miyagi, the Diavolo Asteroid Guardian and user of the Phthalo-Green flame, questioned the Sun-Acrobaleno, "Does that include us? There are only seven of us."

Reborn smiled and immediately Tsuna knew that it wasn't good. He has been with Reborn for years, so he could just tell when it's bad. "Yes it does. There will be more details next week." Everybody sighed; you just have to agree with the hit man or else….

"Where are we going to be staying?" Enma shyly asked, having been quietly eating all this time.

"The South Tower," Timoteo said, joining the conversation. "I requested that we take it since we are small and also have a great view," he explained. Timoteo turned towards his heir with a serious look. "Tsunayoshi-kun, if this goes well, you are ready to take over the Vongola Family." He stated seriously. Tsuna sighed, he was forced to accept his duty as future boss.

"Hai, Grandpa, I understand." He answered making him smile. Tsunayoshi Sawada was ready to become boss…. Don Vongola Decimo.

"While we are at it…. Thanks Hiyo-nee for giving me the boss's duty for this mission." Sayuri thanked Hiyori, making her twin flustered. In their mafia family if family members are born in the same year, then they are eligible for the co-boss position. However, Diavolo Nono changed it so only the eldest could do it. Hiyori is the eldest so she has to be boss until she freely gives it to her younger twin.

"You're welcome now let's eat this food!" Hiyori replied as she took a drink from her cup. Everybody nodded and continued eating the food while making small conversations with each-other.

To be continued…

EBP: That's it, for now that is.

Tell me what you think about it and i'll try to respond. So please leave a review or a pm, i really want your opinion on this.

Preview: Chapter Two: Voices Silently Sing

-The past week had been extremely weird, Harry concluded. Well more than the usual. For example, take a couple of days ago in his potions class.-

I hope you stay tuned in the future! (I'll try to not use my OC as much. They aren't important right now.)

Later!