A/N: Here's a Harry Potter AU of supernatural, where there would definately be some destiel and other pairings! All mistakes here are mine, and I don't own Supernatural and Harry Potter at all.

Hope you enjoy this, and don't hesitate to leave a review! :)

When Castiel received his letter from Hogwarts, to say he was excited would have been a major understatement. It wasn't so much a surprise, as it was eagerly anticipated. For the first 10 years of his life, he had feared being a squib, especially since he was from a family of wizards that dated back eons ago. But then that incident occurred last winter, when after being on the receiving end of merciless bullying from Gabriel and Loki, a sudden bout of anger caused both the boys to be pushed into the cold lake by a strong gust of wind.

Lucifer had winked at him in congratulations of his emerging wizarding powers, and his method of shutting the twins up. Michael had reprimanded him, as the oldest in the family should, but the moment Gabriel and Loki's backs were turned, Castiel could've sworn he saw the faint signs of a smile.

Now, with the letter in hand, it was proof that he was a wizard, and that he was going to Hogwarts like all his brothers did. That night at dinner, he couldn't help but brandish the parchment at everyone's face, even Uriel, who was too busy being pleased with himself for being Head Boy, until Gabriel and Loki threatened to burn it, along with his room.

The next day, Michael took Castiel and his brothers out to get their school supplies for the coming September. It filled him excitement that after years of trailing after his brothers, it was his turn to get measured for the school robes. He spent the whole afternoon waiting in line for books and quills and his cauldron, and he loved every minute of it. He even didn't mind the constant trail of stories that Gabriel and Loki made up, depicting the terrors that first years faced, because after the initial fear and horror, Michael assured him that they were just being immature.

Finally, September came round, and it was the morning of the most awaited day of Castiel's life. Breakfast was chaotic, the hours after that were even more so. Michael was busy loading the Ministry-loaned car with their bags, while Lucifer did his best to sneak in a few more items into his bag which was clearly bursting at the seams. Uriel stood in front of the mirror adjusting and readjusting his head boy badge, as Gabriel offered to pin it where the sun didn't shine. While Uriel was distracted for the moment with Gabriel reaching out for his badge, Loki took the opportunity to swipe his wand which immediately resulted in a screaming match between the three of them.

As Castiel wandered out to the front yard, he spotted Balthazar with a gleeful grin, joining the twins in what had turned into a wrestling tangle of limbs on the ground.

Finally, Michael silenced everyone with a single glare and the ride to the station was thankfully peaceful.

At the station, after two, clearly first year students, asked for directions to the platform, the brothers finally said goodbye. Uriel patted Michael on the back and headed straight to the train with his chest puffed up, so that his badge was not to be missed. Lucifer and Balthazar waved goodbye and left in search of their friends, while Michael spent a good fifteen minutes lecturing the twins on responsibility and good behavior. "I do not want any angry letters from your professors this year, all right?"

"Got it Mikey," Gabriel grinned.

Then, it was just Castiel and Michael. It felt weird saying goodbye to his brother, when they he had always been by his side ever since he was born. "I suppose this is goodbye," Michael smiles, and Castiel's eyes embarrassingly brimmed with tears. He suddenly can't bear to think of Michael all alone without Castiel to keep him company as the others are in school.

Michael hugged him reassuringly and squeezed tightly. "I'll still see you during the holidays and next summer. And we'll write all the time."

"Promise?"

"Absolutely, and so that you can always reach me, I have bought you a something."

To Castiel's extreme delight, he was presented with a tawny brown owl in a cage. "Thank you ," he grinned happily and his brother smiled back. With one last hug and a wave, Castiel made his way to the train.

On the train, Castiel despaired over where to sit, and finally decided on the compartment at the end. He opened the door and found two pairs of eyes staring at him. He recognized them as the two boys who asked for directions. One of them was sitting beside the window, with a book, Hogwarts a history open on his lap. His brown hair framed his face, and made him look like a very shaggy dog. Beside him, was another boy whom Castiel could only describe as beautiful. He had spiky blond hair and green eyes that sparkled as sunlight streamed through the window.

Castiel struggled to find his voice and finally manage to mumble, "May I sit here? Everywhere else is full."

The shaggy boy shrugged. "Sure," he grinned. As Castiel took a seat, the boy offered, "I'm Sam Winchester, by the way. And this is my fraternal twin, Dean. And you are?"

"Novak, Castiel Novak." Castiel mumbled too busy holding Dean's stair. Seconds later, Sam's exact words registered and his eyes widened with surprise. "You're the Winchester brothers?"

Sam nodded and Castiel gaped with awe. "Can I see the umm, scar?" he asked nervously.

Both brothers pulled down the front of their shirts to reveal matching scars on their chest, in the shape of a pentagram encircled with flames. "Wow," Castiel muttered, almost speechless.

Just then, the door to their compartment slid open and in bounded Gabriel and Loki.

"Oh look," Loki cooed.

"Cassy over here made friend!" simpered Gabriel.

Castiel flushed a deep red, but his brothers didn't take notice, or didn't care, because Loki went on to ruffle his hair in front of the other two boys. Gabriel took a seat beside him and stuck out his hand to Sam. "Gabirel and Loki, by the way; Third Years, and Castiel's brothers," he introduced. Sam shook his hand, and offered their names as well. To Castiel's surprise, his brothers didn't bat an eyelid but instead, grinned mischievously.

"If you ever need a huge favor from any professor-"

"Just mention our names, and they'll instantly eat out of your hands. We're really famous among the staff."

With a wink, Loki left, with Gabriel trailing behi

Castiel couldn't help but snort in amusement and shook his head. "Don't listen to them, they're actually more infamous, than famous. Even I'm thinking of denying any relationship with then."

To Castiel's surprise, Dean cracked a smile, which was a big difference from his usual scowl. "They seem pretty cool," Dean shrugged.

"Not when you have to live with them," Castiel disagreed. Sam chuckled.

They spent the next hour devouring every single snack Castiel had bought from the food trolley. The Winchesters, it seemed, had grown up in the muggle world, and were easily fascinated with all the chocolate frogs and even Bertie Bott's Every Flavoured Beans. While laying back, content and full in their seats, Sam had asked him how many times he'd read through their books. "I've only got to read them once," he said, sadly.

Castiel couldn't believe his ears, and immediately began to feel hadn't even skimmed through any of his books at all. What if there was a test on their first lesson?

"Don't worry about it," Dean said, waving his head. "Sam's just a freaky dork. I haven't read anything either. That's what school is for anyway."

Castiel nodded, and sighed in relief.

After a few more hours of riding in the train, they soon reached Hogwarts. Castiel, Sam and Dean had already changed into their school robes and and were quickly balancing all their bags while they made their way out. "Awesome owl," Dean said, pointing towards Castiel's barn owl. "Thank you," Castiel replied.

It was raining heavily outside and they joined the other first years on their ride to Hogwarts in the boats. It was an uncomfortable experience, because of the storm, and Castiel spent the entire journey feeling nauseous. Fortunately, no one in his boat threw up, but a first year, by the name of Garth fell into the lake, only to climb back into the boat, grinning madly. "That was so fun!" he heard the boy say. Castiel didn't know Hogwarts accepted insane people as well.

Finally, they made their way in through the gates of Hogwarts, and were told to wait outside the great hall. Every one was chattering among themselves, equal parts nervous and excited. "What's everyone talking about?" Sam asked worriedly.

"Probably the sorting ceremony." Castiel shrugged.

"The what?" Dean asked.

"First years get sorted into four houses, Gryffindor, Ravenclaw, Hufflepuff and Slytherine." Castiel explained. "Gryffindor's for the brave and courageous, Ravenclaw is for the ones with immense intelligence and wits. Hufflepuff students are the friendliest and extremely loyal and finally, Slytherines are ambitious people." Castiel explains.

"Yeah, but which one's the best?" Sam asks.

"None. I've got brothers in three houses and they're always competing about which one's better, but I see no difference."

Both Sam and Dean nod, satisfied with his explanation. Suddenly, the gates to the Great Hall opened and silence fell upon all the first years. Castiel's nerves were a wreck and despite assuring the other two boys, he began to worry too. How did the students get sorted? Balthazaar never told him, and Castiel was sure Gabriel's story about dueling a troll was made up. Biting the bottom of his lip nervously, he entered the hall with the rest of the other first years.