A/N: Hello, and welcome! This fic was written as a Christmas present for one of my best friends in the world, Pyro the Phoenix, known IRL as Bailey, which is what I'll be calling her in all the author's notes and such. So merry Christmas, my dear Bailey, and I hope this is to your liking. 3

Disclaimer: Harry Potter is copyright J. K. Rowling, and Durarara! is copyright… uh… not me. I'm just borrowing the characters for a bit of fun. Anything you don't recognize from either series, though, is probably mine, though there won't be much of that.

Chapter 1

"Y-you can do it too?"

"Do what?"

Mikado's hands were behind his back. He kicked at the dirt with the toe of his sneaker and whispered, "Magic."

Kida-kun just looked at him. "Well, duh, of course I can do magic! I'm a wizard."

"A wizard?" Mikado's eyes widened. "But—there's no such thing…"

"Yeah there is, because I am one, and so are you. My parents are too. Aren't yours?"

"N-no… I don't think so." Mikado bit his lip.

"So you're Muggle-born? Cool! Muggles are people who can't do magic," Kida-kun explained, seeing Mikado's confused look. "And my parents say Muggle-borns usually aren't as good at magic, but my parents are stupid. Do you want to come play at my house?"

Mikado allowed himself a small smile. "Okay."

"You're seven? When's your birthday?"

"M-March twenty-first," Mikado stammered.

Kida grinned. "I turn seven in June! That means we'll go to Hogwarts the same year!"

"H-Hogwarts?"

"Oh, right, you live with Muggles. I keep forgetting. Hogwarts is the bestest, most wonderfulest place in the whole world. It's where you go to learn magic! And they have classes about turning things into other things and making potions and learning about boring Muggles—no offense—and taking care of magical creatures and all sorts of stuff! And there's a humongous lake, and a giant squid lives in it, and there's a forest and all sorts of bad stuff is in there—like werewolves, and—"

"Werewolves?" Mikado's mouth was hanging open in shock. "Werewolves are real?"

"Of course they're real! And unicorns, and centaurs, and lots of other cool stuff. Boy, you sure have a lot to learn, Mikado. It's a good thing we met. I'm gonna teach you everything you need to know about being a wizard!"

"Th-thank you," Mikado said shyly. Then he bit his lip worriedly. "But what if I don't get into Hogwarts?"

"You will! Everybody who can do magic goes to Hogwarts. My mum and dad went, and all my aunts and uncles and everything."

"When will I know?"

"Usually they send a letter in July before your first year. We start when we're eleven. The Hogwarts Express comes every year on September first at eleven o'clock in the morning!"

"Wow." Mikado's eyes sparkled. "I can't wait."

"Me either! And the best part is that we'll get to live together!"

"R-Really?"

"Well, we will if we're in the same House, but either way we'll have classes together and all sorts of stuff… and I finally get to get away from my stupid parents."

"K-Kida-kun!" Mikado scolded. "You shouldn't talk about your parents like that."

"Well, they are stupid. It's not my fault."

"…Associate with that boy, of all people, Masaomi, I simply won't put up with it any longer!"

"But Father—"

"No buts, Masaomi. It's been fine up until now, but I won't have you tarnishing our family name by letting yourself be seen with a Mudblood."

Mikado winced. He knew that word. He considered going home, but Kida-kun had told him a million times that it didn't matter what his parents said—they would always be best friends. And now that they were going to Hogwarts together—Mikado clutched the heavy parchment letter in his fist fiercely—Kida-kun's parents could interfere with their friendship even less than they always had. Working up his courage, Mikado knocked on the door.

The yelling coming from inside the house fell silent. Footsteps sounded, muffled, and then the door opened, Kida-kun's frown leaving his face instantly when he saw Mikado, replaced by a wide grin. "Hey!"

"Hi," Mikado said, returning the grin shyly. "Look!" He held up the letter. "I got my Hogwarts letter!"

"Me too!" Kida-kun took his hand and tugged him inside. "Come up to my room. We should go to Diagon Alley together!" He shot his father a mean glare as they passed.

When Kida-kun shut the door behind them, Mikado frowned and said, "You shouldn't be rude to your dad like that."

"I don't care. He was being a jerk. You heard us arguing, didn't you?"

Mikado looked away. "Yeah. I didn't mean to eavesdrop—"

"No big deal. He was yelling, it's his fault you heard him. Look, Mikado." Kida put a hand on Mikado's shoulder. Mikado's stomach fluttered. "My dad's a jerk, and you're my best friend. I won't let him mess that up. And in a month, we're going to Hogwarts, and it won't matter anymore. Right?"

"…Right." Mikado smiled. "I'm sorry. I shouldn't worry. I'm just being silly."

"Yeah, you are. Best friends forever, remember?"

"Definitely."

"Hey, Mikado."

Mikado grumbled and tugged his pillow over his face.

"Mikado! Come on, you need to get up if you want to shower before breakfast."

Reluctantly, Mikado sat up and saw James Potter, his fellow Gryffindor fifth year, standing with arms crossed at his bedside. "Morning," he said sleepily.

"Morning to you too. What's with you today? You always get up on time."

Mikado shrugged and swung his legs over the side of his bed, stretching until his back popped.

"Seemed like you were having a bad dream."

"I…" Mikado looked at his hands. "I was."

James sat down beside him. "Wanna talk about it?"

"You've heard it before."

"Oh." James sighed. "That Kida bastard again. Mikado, it's been two years since you last spoke."

"I know that. It's just hard. We'd been best friends since we were seven. He promised me he'd never let his family get in the way of that… and now…" He shrugged. "I can't help thinking about it sometimes, and it… still hurts a lot."

"I want to give that guy a good kick up the ass, I hope you know."

"I know. You've only told me a thousand times," Mikado said dryly. "I'll go shower, then. Don't leave without me."

"Wouldn't dream of it."

Mikado had certainly tried to forget about Kida. And it wasn't as if he hadn't had any success. The dreams were less frequent now, and his chest didn't ache quite as much at the thought of his former best friend. He was still managing to enjoy life and carry on with his schoolwork without Kida.

It was better than when Kida had first stopped talking to him. Mikado hadn't left his bed for a week, insisting on moping about and enlisting the help of a house-elf to bring him chocolate. Eventually James had dragged him into the shower, telling him he was acting like a heartbroken teenage girl—which was, pathetically, two-thirds accurate—and taken him on his first ever trip to Hogsmeade. It had helped, a lot, but it was impossible not to feel the occasional twinge, even after two years.

Mikado supposed it was partially due to how often he was forced to be in Kida's presence. Despite being in different Houses, they often had classes together and were sometimes even put in the same workgroups in Herbology or Potions, which made lessons incredibly awkward and always left Mikado feeling pangs of loneliness for days afterward.

Once he'd showered, brushed his teeth, combed his hair, and gotten dressed, Mikado and James started toward the Great Hall, Mikado still fixing his scarlet and gold tie around his neck.

"What've we got today?" James asked absently. Mikado knew it was just something to fill the silence with; it was almost ritual to ask what their schedule was for the day, even though they both knew it by heart after a month of being in school.

"Transfiguration in the morning, Charms after that, Defense this afternoon, and double Potions."

"Ugh, with the Slytherins."

"Don't remind me," Mikado said quietly as they took seats at the Gryffindor table. He looked across at the table on the opposite end of the hall and sought a dyed-yellow head. His eyes scanned up and down the table, and finally—there was Kida, talking to another Slytherin, a girl—Saki, he thought her name was.

Kida glanced away from her, eyes drifting over the other tables until they inadvertently met Mikado's. Kida looked at him for a moment, then tore his gaze away, sharing with Saki the smile Mikado had had all to himself two years ago. The achy feeling returned to his chest.