Dean shot a weary glance at the clock, and bit back a groan. How the hell had only five minutes passed since class had started? Surely the teacher had been droning on for more than five goddamn minutes, and — what was she talking about right now?

"So I want everyone to give me a brief recount of your progress on your science projects."

Oh — right. Science projects. Well, Dean knew what the topic was…and that was it really. But…he'd been sick all week, so if she called on him, that was his excuse. He shot another glance at the clock — right, one minute down, another…oh god, that was a lot of minutes. And even more seconds. Dammit, why…?

"Dean, if you're going to daydream, at least be less obvious about it," Lisa hissed. "You have that weird glazed look in your eyes — you know, the one you get when Sam starts talking about Legal Studies."

"So," the teacher continued, "how about — ?"

"Oh — oh me, first!"

The entire class turned to stare at the speaker — Castiel Shurley — with bated breaths, and Dean couldn't blame them. The guy was a loose canon, and when he responded to anything with this much enthusiasm, you knew he was about to spout something ridiculous (and something that would, most likely, get him shoved in the dumpster by the school football team. Dean definitely wouldn't be protesting that).

Dean hadn't exactly been a huge fan of their substitute teacher — but she was filling in for Ms. Harvelle, and no one could beat Ms. Harvelle, so Dean supposed he shouldn't judge her too much — but he couldn't help but feel pity for her when he caught sight of the panic on her face.

"Uh," she choked, "how about…Ms. Braeden! Yes, Ms. Braeden, why don't you — "

"It's almost ready!" Castiel yelled excitedly, while the sub — and for the life of him, he could not remember her name — let out a soft moan. "Any day now, it'll be done! It's seriously amazing — "

"I'm sure it is Mr. Shurley," the sub agreed, although her voice suggested the complete opposite. "Now, uh…Ms. Masters, why don't you tell us — "

"If anyone wants a trip through the multiverse, you might want to send in your applications now. I'm picturing a pretty tight schedule."

Dean turned to Lisa, bewildered. "What the hell is he talking about?" he hissed.

Lisa glanced at him, her eyebrows raising. Dean took a brief moment to appreciate how good she looked today — because okay, Shurley was being a moron (no surprise there), but that didn't mean the world didn't keep turning.

"Seriously Dean?" she whispered back. "He hasn't shut up about it all week."

"I've been sick," Dean reminded her.

Lisa rolled her eyes. "He thinks he's created a machine that let's him travel to other universes."

Castiel's head jerked around, because for some reason, the guy had creepily good hearing. "No Braeden, I don't think — I know!" he snapped. "And it'll be ready any day now."

Dean, meanwhile, gaped at him, because — well, Shurley was weird, and a creep, and a total moron (despite apparently being one of the smartest kids in school), and everyone knew he was insane (and Dean had the unfortunate pleasure to know just how insane he really was), but — really?

"Right," the sub said, having seemingly regained her composure. Once again, Dean pitied the woman. Obviously this was her first teaching stunt, and judging from her previous panic, he was pretty sure it wasn't going well. "Mr. Shurley, since you insist on speaking, why don't you tell us about your actual project?"

Castiel raised one eyebrow.

The sub's eye twitched. "The diorama you were supposed to create detailing cell division. Since, well — this is a biology class!"

Castiel cocked his head to the side, and swung his legs back and forth.

"Oh god Cas," muttered the guy next to Castiel — Balthazar, Dean realised, Shurley's best friend. Dean had always been somewhat confused by that pairing, because sure, Balthazar was a bit on the strange side, and he'd been dumpster-tossed a few times, but he was nowhere near as bad as Shurley.

"Right then," the sub sighed, "if you don't have anything to say, please stop interrupting."

"Hey Cas, how do I apply?" Crowley called out from the back of the room.

The sub jerked upright. "Oh, for Christ's sake — "

Castiel turned. "I'll email you the details today," Castiel told him.

"That's it! Detention — both of you!"

Dean glanced at the clock. Ten minutes had passed — goddammit.

...

Dean shouldered his way through the crowded hallway, ignoring the occasional squawk of protest. In his opinion, if you didn't want to be shoved aside, you shouldn't be standing in the school hallways at the end of the day. And if, like everyone else, you had to be in this hallway in order to get to your locker…well then, too bad. He was hungry, and mum was making her apple pie. If that wasn't a good excuse, he didn't know what was.

"Hey, slow down!" Sam called, hurrying after him. Jess followed, having no trouble moving through the crowds with Dean's giant of a brother in front of her.

Sam came to a halt beside him, Jess at his side. "So, what, was that it?" he asked, slightly out of breath.

Dean shrugged. "Pretty much, yeah."

"And he actually believed it? That he could create some kind of…dimension travelling machine?"

Jess's brow furrowed. "Wait, Castiel…which one is he again?"

"The one who's in love with Dean," Sam replied, grinning. He ducked out of the way as Dean's fist went flying past his head.

"Shut up Sammy," Dean snapped, coming to a stop in front of his locker. "He is not — "

He paused, catching sight of a piece of paper, sticking out from under the locker door. He groaned, hitting his head against the door, while Sam — having also caught sight of it — let out a whooping laugh.

Jessica's stared at them, bewildered.

"Is that what I think it is?" Sam asked, a wide grin on his face.

Dean glared at him. "I don't know. I don't care. I am not going to look."

Jess blinked in confusion. "I don't get it. What is it?" she asked.

"Only one thing it could be." Sam shot a glance at Dean, amusement dancing his his eyes, and then turned back to Jess. "You see, Castiel has this habit of leaving…little, uh, love letters — " He let out a choked laugh, and Dean considered kicking him in the shin, " — in Dean's locker."

Dean's jaw clenched, and he reached down to grab the note. Sam's hand ducked out and grabbed the note before he could — damn, his brother was quick — and unfolded it, ignoring Dean's frantic protests. Dean let out a frustrated growl, and tried to grab the note from Sam, but Sam simply held it above his head, and dammit, why did he have to be so goddamn tall?

"Roses are red," Sam choked out, "this paper came from a tree. One of these days…" His shoulders shook with mirth. Dean howled in frustration, and reached out to grab his brothers shirt, but Sam jumped out of the way.

"One of these days, you're going to fuck me."

Sam let go of the note, and collapsed on the floor, his shoulders shaking with laughter. Jess stared incredulously at the note, while Dean wondered what it'd take to get his brother disowned.

"Uh, that's…" Jess seemed at a loss for words. "That's, uh…"

Dean reached down, and snatched the note from the floor. He hurled it in a nearby bin, his cheeks flaming. Sam took one look at him, and then burst into another gale of laughter.

"Oh shut up, asshole," Dean grumbled.

Sam wiped his eyes, and climbed back to his feet. Jess shot him an amused — and still slightly bewildered — smile, while Dean continued to glare.

"He really isn't that bad," Sam told her, wiping away tears. "I mean, yeah, he's a little weird…uh, very weird…but once you get past the uh, time travel, and…weird alien theories…"

"Or the fact that he tried to evacuate the whole school because, apparently, 'Mr. Lafitte is a vampire, who's going to kill us all'?"

Jess's eyes widened. "Oh, that was him?!" Her brow furrowed. "Uh, actually, I think that was supposed to be a joke…"

Dean snorted. "Who knows, don't care. Guy is weird, and I want nothing to do with him." He turned back to his locker, opened the door, and grabbed his bag.

"He lives next door to us," Sam told Jess.

"Don't remind me," Dean snapped, not looking up.

"And his bedroom window is right in front of Dean's room."

"Again — don't remind me."

"…Dean likes to deny it, but I think sometimes he likes to peak — "

"Shut up Sammy, I thought it was Anna's room!"

...

Castiel noticed Balthazar shooting another nervous glance through the window, and he followed his friend's line of vision. The hallways were relatively empty — Castiel had waited until the crowds had died down before making his move — but there was still the odd teacher here and there, and he…well, he didn't really care too much, but Balthazar was a born worrier. And since he put up with Castiel's apparently 'weird' tendencies (a highly subjective word in his opinion), he'd deal with his friends neuroticism.

"You know," Balthazar said, "the teachers pretty much hate us here, so maybe stealing from them isn't such a good idea…"

"I'm not stealing," Castiel replied, turning back to the open supply closet. He reached out and grabbed a few pieces of metal from inside, and dumped it on the floor beside him. "This material is here for student use."

"During class," Balthazar replied. "Which…isn't happening right now. Also, you don't even take this class."

"Shh!" Castiel snapped. "Less talking, more keeping watch!"

Balthazar rolled his eyes. "What are you even doing?"

"Getting the finishing touches for my masterpiece."

"…Oh. Right. That. Because apparently all you need is scrap metal from a high school classroom."

Castiel shot him an annoyed glance. "Slow down, non-believer," he retorted. "I'm just going along with what I saw in that first machine."

Balthazar blinked. "…The what?"

Castiel flung his arms in the air, and whirled around. "Oh come on Balthazar!" he groaned. "I told you this story, remember? I was going home after Crowley's party…"

Balthazar sighed, exasperated. "Oh right — and you ran into that homeless guy."

Castiel snapped his fingers, grinning. "Exactly, you do know the story! So now — what happens next…?"

Balthazar shot a distracted glance out the window, shrugging. "You uh…got the machine. Hey wait, I think someone's coming…"

Castiel's eyes narrowed. "Oh come on, you can do better than that. Here, let me give you a recap — Homeless Guy had the machine with him, and he goes, "hey kid, this machine here will let out travel to all these fun little universes!" Which sounds a bit dodgy to be honest, but then he just asks for two dollars, and my sandwich, not a blow job or anything, so I think, 'hey, what the hell?' Besides, I was going to give him the sandwich anyway — because seriously, have you tasted my mum's food? You don't eat Becky Shurley's food unless you have an absolute death wish, and she has seriously got to stop slipping snack's into my bag like I'm five years old — "

"Castiel!"

"…Right, so anyway — I give Homeless Guy the sandwich and two dollars, and he gives me the machine. And okay, I don't actually believe it's going to work, I'm not completely crazy — if someone was going to sell you a dimension travel machine, it'd sure as hell cost more than two dollars, right? But I thought, 'hey, maybe I can use this thing as a paperweight or something.' But then, here's where it gets weird. I grab the machine, my hand accidentally hits this huge red button and then — bang! I'm in a whole new location!"

Balthazar glanced out the window. "Cassie, I seriously think that someone's — "

" — and then Balthazar — it was you. Well…a weird, older version of you. And he goes, "what the hell — ?" in a British accent. And that's when I know it's all true because — you? British? No. So I'm freaking out right, because, hello, weird teleportation and weird British-you, so I hit the green button that says 'go home!', and I'm back with the homeless guy."

Balthazar relaxed. "Oh wait, it's just Meg. Hey Meg — okay, she's walking away. Seriously Cassie, why does she hate me so much?"

"And then the machine exploded. So, it definitely works, but it's completely fried. Luckily, the parts that are completely unsalvageable are surprisingly easy to come across, so I've nearly recreated it — just, you know, which my own spin on things, so it won't explode in my face again…"

Balthazar turned back to Castiel, his head cocked to the side. "This was after Crowley's party, right?" he inquired. "I'm pretty sure you were high when you were left."

Castiel snorted. "I was not."

"Yes you were," Balthazar insisted. "I remember, because I tried to stop you from leaving, and then — well, then Meg arrived, and god, she looked good in that red dress…"

"You were British Balthazar!" Castiel cried. "British! I'm pretty sure I can't hallucinate that!"

...

Balthazar took a bite from the cookie, and then promptly spat it to the floor. He came to an abrupt stop, only a few feet away from the entrance of their school, and stared at the biscuit in horror.

"What the hell is in these things?!" he demanded.

Jimmy, Anna and Castiel were a few steps ahead, with Balthazar having slowed down, excited at the prospect of food. Castiel's shoulders were hunched, and Balthazar could see his shoulders trembling with the beginnings of laughter (and oh, he was going to kill him). A gaggle of freshman girls walked past him; one of them glanced down at the sticky gob of chewed-up cookie, and her nose crinkled in disgust.

"Trust me," Balthazar told her, "if you ate this thing, you'd be spitting it out to."

She shot him a tight-lipped frown, and hurried off after her friends, jumping over the mess on the sidewalk.

Jimmy walked over to him, glancing at the half-eaten cookie. "Uh, Cas, aren't those the cookies that mum made last night?" he called back to his twin.

Castiel grinned widely, and more than a little deviously.

"Your mum made these?!" Balthazar demanded, a slight note of hysteria in his voice. "You told me you got them from the bakery!"

Anna and Jimmy snorted simultaneously.

"And you believed him?" Anna laughed.

"I can't believe you fed me your mum's food!" Balthazar moaned, tossing the cookie in a nearby bush. "Are you trying to kill me?"

"I should be offended on my mum's behalf," Castiel told him.

"No you shouldn't," Jimmy retorted. "No one eats mum's food."

"She's supposed to stay away from the kitchen, since that time she gave all of us food poisoning, and nearly killed Michael, but…well, sometimes she just gets in." Anna shrugged. "I thought we'd gotten rid of all of those though."

Castiel smirked. "Nope — I saved one just for darling Balthazar."

Balthazar glared. "I seriously hate you."

Jimmy glanced down at his watch, and frowned. "Okay, I think I'm going to run ahead," he told them. "Amelia's coming over to study, and I want to make sure that Gabriel isn't in the house — or the neighbourhood. Or, preferably, the same state."

"Kali kicked him out, remember?" Anna told him. "He's moved back in."

"Dammit!" Jimmy cursed, before breaking into a sprint.

Anna snorted. "Oh, they are so not studying. I'm pretty sure they'd be all over each other by this point, if Amelia's parents weren't so damn strict."

Castiel leaned close to her, grinning. "Oh, but dear sister — perhaps they are together in a different — "

Anna stepped away abruptly. "Yeah, okay, no!" she shot back. "I am not standing here and listening to your crazy time travel theories. I'm going home. Balthazar — I'd wish you good luck, but you chose this, so have fun."

Anna walked off, her ponytail swishing behind her. Balthazar stared after her, spluttering, "I CHOSE this?! They made us share a pack of crayons back in kindergarten, and then he just wouldn't leave me alone!"

"Time travel!" Castiel choked. He kicked a rock, and it skidded against the pavement, landing a few feet away. "We'll be traveling to other universes — seriously Balthazar, how am I related to her?!"

Balthazar sighed. "Yeah, okay, fine."

"No, no, not 'fine'!" Castiel snapped, shooting a glare at his best friend. "The difference is important! Just think — if this was a time travel machine, I'd be traveling to the future, finding out about a potentially horrible life!" Castiel stared pointedly at Balthazar, who only raised one eyebrow in response. He let out a sigh of frustration.

"Come on, just think! Oh my god — Gabriel tried to bungee jump, and had his ropes cut by his psycho ex-girlfriend Kali?! Anna had a break down from all that studying, and got institutionalised?! You and Meg —dating?!"

Balthazar frowned. "Wait, what's wrong with — "

"And the only shining beacon, in an otherwise desolate future is my happy marriage to Dean Winchester!"

Castiel clutched his chest dramatically, while Balthazar stared at him in disbelief. Castiel studied his friend's expression, and grinned widely.

"I know right? Instant depression. Now — traveling to a different universe…you'd get to see all the horrible ways your life could have gone. Then, well, you'd feel better about your own shitty life."

Balthazar stared at him for a moment, and then rolled his eyes. "Well that's one way to look at it."

"Oh, just think of the possibilities!" Castiel said, clapping his hands together eagerly. "I could meet the female version of me! I mean, personally, I think I'd make a pretty hot girl. Or…hell, maybe we might even get a universe where Mikey and Luce are actually related!"

Balthazar stared at him strangely. "Uh…" he coughed, "and that would be a bad thing because…?"

Castiel smiled. "Oh — because their sleeping together."

Balthazar choked, and came to an abrupt stop, almost slamming into a lady who had been walking in his direction. She shot him an irritated glare, while he stammered out a quick apology. Balthazar quickly hurried after Castiel, his eyes wide.

"What the hell?!" he yelped. "Wha — how — they're brothers!"

"Uh, no, they're my brothers," Castiel retorted, seemingly unbothered by his announcement. "They're only step-brothers."

"Still, it's weird," Balthazar muttered, still in a state of shock. "And you're — you're okay with this? With your brothers dating each other?"

"They're step-brothers," Castiel repeated. "And it'll make mum and dad freak out, so yes, yes I will." He grinned. "Dad has the funniest voice when he's having a panic attack."

Balthazar gaped, and Castiel reached out to steer him away from crashing into yet another oncoming pedestrian.

"You know Cassie, you're my best friend and all, but I have no idea how your mind works," Balthazar muttered, shaking his head.

...

AN:

Okay so…this is my first supernatural fanfic ever, so I'm kind of nervous xD Basically, I just really wanted to create this crazy AU where the character relationships and personalities are completely ridiculous, and then have these characters meeting the canon SPN!universe characters. Which will happen…very soon (I just need to set up this universe a bit more). Anyway, just tell me what you think of it so far.