A/N: Look, another chapter. Sometimes my free period comes in handy. This chapter was actually a bit harder than I thought it would be to write. It just didn't want to come out, but I got there. Thank you to everyone who has been favouriting, following and/or reviewing. It makes me happy to see that people like my stories.
Also I think I should mention that Lambo in this story doesn't have as big an afro as he does in cannon, mainly because he is growing up. He also doesn't wear the cow suit anymore. I feel that i should tell you the ages of everyone too. Okay so, Tsuna is 15 but only because it hasn't been his birthday yet(Hogwarts starts in September, his birthday is in October), same as Gokudera(birthday hasn't come yet), Yamamoto is 16, Ryohei and Mukuro are 17, Hibari is 18, Chrome is 14(same reason as Tsuna and Gokudera), and then Lambo is 7, which I mentioned in an earlier chapter I believe. Reborn is in his adult form and he will be turning 23(that's how old I am making him, I couldn't find out his age).
Enough of that, on with the story.

Disclaimer: I don't own KHR or Harry Potter, they belong to Akira Amano and J.K. Rowling respectively.

Warnings: Probable OOC-ness and cursing(mostly Gokudera, but too much exposure causes other characters to pick up the habit.)

*KHR*

"Lambo-sama is scared." Lambo was clinging onto Tsuna's back and bawling his eyes out. They had arrived late and they could faintly see carriages being pulled down the road. From their position, they couldn't see what was pulling the carriages. Well, that was until one of them pulled up beside them.

Gokudera jumped and started cursing in every language he knew, which was a lot. Yamamoto's smile became so fake it hurt. Lambo started bawling and clinging to Tsuna. Tsuna himself screeched and backed away slowly. Ryohei let out a startled 'extreme' and then was quiet. Chrome hid herself behind Mukuro, who had his trident in hand and was waving it threateningly. Even Hibari had had a reaction pulled out of him. He took a step backwards and looked slightly paler than usual, not that anyone apart from Reborn or Tsuna could tell.

Reborn was the only who didn't react. He had been here before and seen them many times. Smirking at the different reactions that they all had, he walked up to the creature in front of the carriage.

"This is a magical creature known as a Thestral. They are only able to be seen by people who have witnessed death at least once." He explained as he pet the creature's neck. When it nudged his hand slightly, as if enjoying the petting it was receiving, they all became calmer. Lambo's bawling became sniffles every now and again.

"Lambo-sama wants to pat the skeleton horse." He said between sniffs.

"Lambo, it is called a thestral." Tsuna reminded him as he moved closer to the thestral. As he stood next to it, Lambo reached out and touched the creature's neck. After grimacing slightly from the feel of the bones, he continued to pet the thestral's neck. Tsuna let out the breath he had been holding when he saw that the creature made no move to attack them.

"Alright then you lot. We are late enough as it is, perhaps it is time we went into the carriage and went to the school." Reborn suggested and motioned towards the door to the carriage. Lambo looked in the direction and then back at the thestral.

"Lambo-sama wants to stay with the skeleton horse." He exclaimed and climbed off Tsuna's back and onto the thestral.

"Oi, Lambo, maybe you should ride on the seat instead of the thestral." Tsuna pulled Lambo off the creature and sat him down on the seat.

"But Lambo-sama wants to ride the skeleton horse." He whined and started struggling out of Tsuna's hands. They began arguing about it for five minutes.

"Stupid Cow, listen to Jyuudiame." Gokudera had stuck his head out of the carriage to see what was taking so long.

"Lambo-sama wants to ride the skeleton horse!" Lambo started spark as he yelled. Tsuna quickly placed Lambo on the seat just behind the thestral. As soon as he let go, Lambo stopped sparking.

"Lambo, we don't know what it is like to ride a thestral and I don't want you to get hurt. So how about instead of riding it, you sit on this seat. If you want I will sit on the seat with you." Tsuna compromised. After thinking about it for a while Lambo nodded his consent and Tsuna got up on the seat as well.

Once Reborn got in the carriage, he had been waiting for the argument to finish, the thestral started pulling the carriage towards the castle.

*Harry Potter*

"Hem, hem." This small cough brought Dumbledore's opening speech to a halt. He looked over at Professor Umbridge, leaving the students to wonder why he had stopped. She cleared her throat once again and then got to her feet, making it clear that she would like to make a speech.

Dumbledore looked taken aback for a moment, before he sat down and looked at her alertly, as he wanted nothing more than to listen to what she had to say. The other staff members were not as adept at hiding their surprise, neither were the students. No new teacher had ever interrupted Dumbledore before. Many students were smirking; this woman obviously didn't know how things were done at Hogwarts.

"Thank you, Head Master, for those kind words of welcome." At once Harry felt a rush of dislike that he could not explain. All he knew was that he loathed everything about her, from her stupid voice to her fluffy pink cardigan. She gave another small cough and continued.

"Well, it is lovely to be back at Hogwarts, I must say!" She smiled, revealing very pointed teeth. "And to see such happy little faces looking up at me!"

When Harry looked around he saw that none of the faces were happy. They all looked shocked at being addressed like they were five-year olds instead.

"I am very much looked forward to getting to know you all and I'm sure we'll be very good friends!"

"I'll be her friend as long as I don't have to borrow that cardigan," Parvati whispered to Lavender and they both lapsed into silent giggles.

"Hem, hem. The Ministry of Magic has always considered the education of young witches and wizards to be of vital importance. The rare gifts with which you were born may come to nothing if not nurtured and honed by careful instruction. The ancient skills unique to the wizarding community must be passed down the generations lest we lose them forever. The treasure trove of magical knowledge amassed by our ancestors must be guarded, replenished and polished by those who have been called to the noble profession of teaching."

Professor Umbridge broke off here to give the teachers a small bow, none of whom bowed back to her. Professor McGonagall's dark eyebrows had contracted so that she looked positively hawklike, and Harry saw her exchange a glance with Professor Sprout as Umbridge gave another little 'hem, hem' and continued with her speech.

"Every headmaster and headmistress of Hogwarts has brought something new to the weighty task of governing this historic school, and that is as it should be, for without progress there will be stagnation and decay. There again, progress for progress's sake must be discouraged, for our tried and tested traditions often require no tinkering. A balance, then, between old and new, between permanence and change, between tradition and innovation…"

Harry found his attention wavering, as though his brain was slipping in and out of tune. The quiet that always filled the Hall when Dumbledore spoke was breaking up as students put their heads together, whispering and giggling.
Harry was quite sure that a full-scale riot could have broken out right under Professor Umbridge's nose and she would have ploughed on with her speech. The teachers were still listening attentively, and Hermione seemed to be drinking in every word Umbridge spoke, though, judging by her expression, they were not at all to her taste.

"…because some changes will be for the better, while others will come, in the fullness of time, to be recognised as errors of judgement. Meanwhile, some old habits will be retained, and rightly so, whereas other, outmoded and outworn, must be abandoned. Let us move forward, then, into a new era of openness, effectiveness and accountability, intent on preserving what out to be preserved, perfecting what needs to be perfected, and pruning wherever we find practices that out to be prohibited."

She sat down and Dumbledore started clapping. The staff followed suit and a few students joined in. Before everyone could start applauding properly, as everyone had been taken by surprise when her speech ended, Dumbledore stood up again.

"Thank you very much, Professor Umbridge, that was most illuminating," he said bowing to her. "Now, as I was saying –" Dumbledore was cut off again, although this time it was by the sound of knocking. Hermione and Ron, who had been debating about Professor Umbridge's speech being illuminating, turned and looked at the door along with the rest of the students.

"It means the Ministry's interfering at Hogwarts." Hermione whispered before falling silent.

"I was wondering when they were going to arrive. I guess that is them now." Dumbledore mused out loud and then called out towards the door.

"You may come in."

The students were straining their necks towards the door, trying to catch a glimpse of who had walked in. Harry looked and saw a young man with messy black hair walk in. His eyes were darting around the Hall and piercing the students with a glare every few seconds. After a minute he stood to the side and two more males walked in.

One of them had silver chin length hair that curled out slightly at the end. The other had short black hair and was taller than the silver head. They too looked around the Hall, the silver head glaring and the black haired one smiling slightly. Once they stopped they stood aside and another two people walked in.

Both these people had their hair styled in a similar fashion. The female was smaller and her hair was purple and, from what Harry could see, an eye patch covering her right eye, whereas the male was as tall as the first one and his hair was blue. Harry thought that their hairstyle resembled that of a pineapple, he received a glare from the male as he thought that. At the glare, he noticed that where the female had an eye patch, the male had a red eye instead. They too stood to the side and again someone else walked in.

At first it looked like there was just one person. He had his white hair cropped short and, Harry could just see, a scar cutting through his left eyebrow. Also he appeared to have both his hands wrapped in bandages. As the students looked closer they could see a curly mass of black hair beside the first male's head. When he turned to look around, they realised that there was another person sitting on the male's shoulders.

This boy was wearing what appeared to be cow print shirt and brown pants. He had horns sicking out of his curly hair as well. The boy was looking around as well. Once they stood to the side, all of the people who had walked in turned to face the door slightly.

"All of the Herbivores have been put into place, Omnivore." The first male spoke towards the door, before glancing behind him to glare at the students again.

"There are no threats identified, Jyuudiame." The silver haired male appeared to be smiling for the first time.

"You can come in Tsuna." The person who had walked in with the silver head was smiling widely at the door.

"Lambo-sama sees lots of people that can become his subordinates but no enemies, Tsuna-nii." The boy cried out back at the door.

"This Hall is extremely safe, and looks extremely cool." The white haired male shouted at the door.

"Kufufu, everything is fine Tsunayoshi." The blue pineapple haired male smirked in the doors direction. All the students shivered as though the room had dropped in temperature.

"B-Bossu, it is safe to come in now." The only female who had walked in was standing slightly behind the blue pineapple head and called out meekly.

The Hogwarts students held their breath as they waited. As they heard footsteps all the people who had entered already formed a circle around the entrance of the door. They craned their necks but they couldn't see over the top of the circle. However, they could see a tall man wearing a black suit and a fedora that had an orange band around it, walking in the middle of the circle. Someone else walked in but none of the students could see anything. All they could see was brown hair in between the gaps of the people standing.

The circle began walking towards the teachers. Every now and then a flash of brown or orange could be seen between the gaps of the circle. The students' eyes followed the circle as it moved and stayed on it when it stopped.

As soon as it stopped, it split. The first male walked off to the side followed by other black haired male. The two pineapple haired people walked in the opposite direction. The person that the students couldn't see took steps forward and was followed by the man in the suit. Soon the students were able to see the other person.

He had gravity defying brown hair that stuck in every direction. He was shorter than the rest of the males that had walked in, but was taller than the female. When he glanced around some of the students could see that his eyes were a chocolate brown that, if you looked close enough, had a slight tinge of orange in them.

He walked up to Dumbledore, only stopping when he was a few steps away from him. The man who had followed him stood slightly behind him and off to the side. As if they had rehearsed it many times, they bowed at Dumbledore and the teachers behind him at the same time, the other people standing following suit. Dumbledore motioned for the other teachers to stand, and once they had stood he bowed back to them, the teachers following suit as well. Harry noticed that Professor Umbridge hadn't bowed as deeply as all the other teachers; she had barely even bowed her head.

When they were standing upright again, the brown haired male turned and faced the students. Once again the man followed, as did the other people. He bowed and the others followed. Standing up again, he faced Dumbledore again. Dumbledore held out his hand and the brown haired male shook it. Motioning for him to stand next to him, Dumbledore looked over at the students.

"Students allow me to introduce Vongola Decimo, Sawada Tsunayoshi, and his Family. They will be teaching a new class that has been introduced this year. This class will be about self-defense and it is compulsory for every student to take." Tsunayoshi smiled at the students and bowed again. Dumbledore gestured to the side and Tsunayoshi and his family walked over to the table that the students hadn't even noticed until it was pointed out.

Once they were seated, with Tsunayoshi in the middle, Dumbledore began speaking again. This time nothing interrupted him and he was able to finish his announcements. Once finished, he dismissed the students to bed.

Ron and Hermione made their way over to guide the first years to the common room. Harry took a look behind him at the table where Tsunayoshi and his family were sitting. As soon as he looked he saw that Tsunayoshi was staring at him. They locked eyes and Tsunayoshi smiled at Harry. Blinking, Harry turned around and made his way to the common room. Secretly, he was looking forward to the new class.

*Crossover*

A/N: Woo for my line-break things, I had no idea what to put in them. I think that is the most I have written from the Harry Potter POV so far. But now Tsuna and co. are at Hogwarts. Yay!*confetti and streamers fly*. Also, you have no idea how hard it was for me to write all of the KHR characters as descriptions, and because Dumbledore introduced Tsuna as 'Tsunayoshi' I called him that because it was from the Hogwarts students POV, and they don't know him as Tsuna. Honestly i find it easier to call him Tsuna rather than Tsunayoshi, unless it is Hibari or Mukuro talking, and it is probably because I am lazy.

Anyway, thanks for reading and sticking through the set up. Sorry it took so long /(_ _)\ but it is very much nearly finished (translation: I don't actually know what is going to happen because I don't plan ahead.). Please review and give me ideas or things that can help me with my writing or just to say if you liked it... or if you didn't, that's fine too. Please and Thank you.