Hello, fellow writers and readers! So, this AU is based on the fact that the first time I saw the trailer and some clips (yes, I cheated because I saw the performances before I saw the movie) for 'Pitch Perfect', I thought Jesse was the captain of the Trebles and Bumper was just an annoying dude playing co-captain or something. This gave me an idea for a story.

So, I decided to create a world in which Beca and Jesse, a Bella and a Treble, try to hate each other almost as much as Aubrey and Bumper. I thought it'd be interesting to see how they'd act if they were meant to be rivals and if they took those roles seriously. Their behavior toward each other will be explained in future flashbacks I'll post in almost every chapter.

Disclaimer: I don't own any characters from Pitch Perfect (kill me now), only the plot. Apart from some dialogue I've used from the movie.

A-ca Initiation Night – Junior Year

Beca smiles at the two new Bellas, Lian and Kristen, as they squeal and race down the steps to the beer keg.

"Damn, those munchkins have a lot of energy," Fat Amy says. Stacie nods in agreement and practically hauls Denise and Lilly by the arm as she starts heading toward the crowd gathered at the bottom of the steps.

"Let's go, a-ca bitches! Move your asses!" She shouts excitedly. The rest of the Bellas follow them down, laughing and making as much noise as possible to annoy the Trebles giving them side-eye glances from a corner.

Katherine, who joined the a-capella group just last year, turns to Beca. "You coming?"

"Yeah, I'll be right there. You go on ahead," Beca says. Katherine shrugs and runs down to meet Alex, who's waving her hand at them frantically to call them over. Beca chuckles as she sees Alex jump up and down excitedly as Stacie passes around the beer; the Bella who joined the same year as Katherine has always been overly enthusiastic. She sees Kristen and Lian nodding their heads at Amy as she tells them stories about her wild escapades at Initiation Night, making obscene hand gestures and causing the girls' faces to pale.

They are now a group of twelve. As fun as that sounds, Beca knows this year will most likely be a pain in her ass. Now she's going to have to try to keep 11 girls in line and away from all possible distractions. Crap, who is she kidding? They're all going to fool around during rehearsal and not work on their performances until last minute.

It doesn't really matter anyway. They've won the ICCA's two years in a row; this year would be no different. She looks around the bleachers, checking out the competition. The High Notes haven't exactly taken in many new members; only some twins sending paranoiac glances at the people gathered around them. Beca's not really sure they're in the right state of mind right now. She looks toward the left at the BU Harmonics, meeting Ben's gaze and rolling her eyes as the captain sneers at her. They don't exactly get along, since the preppy group was very 'traditional' and held a personal vendetta against the Bellas, especially her, for straying from exactly that.

She considers herself lucky that Aubrey had seen her way freshman year; it had taken her up-tight-former-captain-turned-friend a while (a very long while), but she had finally relented and left the Bellas in Beca's care.

Her gaze then moves on to the four new Trebles standing in the corner; she only remembers one of their names, Ethan, she thinks. He had shown he knew how to beat-box almost as well as Donald at the auditions, so it isn't a surprise that he got in. Beca doesn't remember the other three's performances but she's sure they have amazing voices; it's an official requirement for a Treble. She frowns as she feels someone's eyes on her, already knowing who it is and purposefully angling her head in the opposite direction. She walks down the steps toward her group, ignoring the imaginary tingles on the back of her head.

"Beca! Good, you're here! Now, let's toast," Jessica says, holding her cup up high as if it were a champagne flute. "To one hell of a freshman, sophomore, and junior year for all of us, and one hell of a year for the Bellas!"

"Here, here!" Ashley smiles as she knocks cups with Lilly and all of the Bellas raise their drinks high in the air as they repeat her words.

"This is awesome!" Lian grins as she and Kristen chug the beer in one gulp.

"Careful, babes. There's always crazy shit happening on Initiation Night; you don't want to get drunk too quickly," Cynthia Rose says, raising her eyebrows. "Especially because there's an oath to respect."

Lian and Kristen immediately look toward the Trebles on the opposite side of the bleachers. "Why can't we be…uh…'Treble-boned', again?" Asked Kristen.

Fat Amy shrugs, "It's the only form of tradition we follow; it's been in the Bella pledge for years. Almost as many as my sexy, fat ass has been toned." Lilly nods her head and hums in agreement.

"Don't worry, girlies. I have contacts; I'll make sure you guys get boned elsewhere," Stacie says winking at them. "Forget the Trebles; they're not that hot."

Fat Amy coughs, "Says the one who couldn't keep it in her pants last ye-" she gets cut off as Stacie elbows her in the chest, accidentally hitting her boobs. "Watch it! My girls are sensitive!"

Alex exhales, "It's not so hard, really. Just ignore their good hair and sexy voices." Katherine gives her a looks that says, "Yeah, that helps."

The rest of the Bellas start filling Kristen and Lian in on the proper way to all but ignore the all-male a-capella group as Beca gets the feeling she's being watched again. That son of a- He'll never stop, will he? She narrows her eyes as she looks to the far left and her glare meets big, brown eyes.

Jesse. Swanson.

If she could, she would burn a hole through his head; and judging by the way he's smirking at her, he knows it, too. She stares back at him coolly as he gives her a mocking grin and lifts his cup up in a toast. Beca shoots him a sarcastic smile and blows him a kiss. She rolls her eyes as he mimics catching it and putting it in his pocket for safe-keeping, then patting his heart. He finally turns away when one of the other Trebles calls his name.

When she turns back to the Bellas, she catches Amy's gaze, who raises her eyebrows and looks between her and the Treble Captain, asking a silent 'what went on there?' Beca just waves her off and looks toward the rest of the group, pretending to nod along to whatever they were saying.

Sometimes she couldn't help get so worked up over him; that dude would always be a royal pain in her ass.

A-ca Initiation Night – Freshman Year

"Beca! Be-caw!"

"Wow," she says as she turns to the nerd using her name as a bird call. Seriously, why does this dude keep showing up everywhere?

"Do my eyes deceive me or are you in a-capella?" He says nodding his head like his theory on her has just been proved right.

She squints up at him as he crosses over the final bench and invades her personal space. "No," she says, taking a step back and shaking her head at him sarcastically, because come on. Why else would she be here?

Jesse smiles. "You're one of those a-capella girls and I'm one of those a-capella boys and we're gonna have a-ca children. It's inevitable," he says matter-of-factly.

"You're really drunk right now; I don't think you're gonna remember any of this," she tells him after getting over the initial shock of what he just said to her. This weirdo seriously just told her that they were gonna make future a-ca-what now?

"No," he says shaking his head with an unfocused look in his eyes. "I'm not drunk at all, you're just blurry." She chuckles at that, because that was actually kind of cute. Not that she likes cute things or anything. She makes to speak but he cuts her off before she can. "So, what group are you in?" he asks her excitedly. "The High Notes? You don't look like the type, though. But I really can't imagine you in the BU Harmonics, either. Is there a new group? One with sarcastic quips and scary ear spikes?"

She sighs when he stares at her expectantly. At least he stopped rambling. "Barden Bellas, actually. Unfortunately."

Jesse's smile dims and this causes her to raise an eyebrow. "No, you're not a Bella," he says frowning.

She crosses her arms and stares back at him. "Uh, yeah I am. Why? That group too girly for me or something?" It actually is too girly for her and Jesse knows it, too. But the way he told her she wasn't a Bella was kind of insulting.

"You can't be in that group," he blurts out. "Not because they're too good for you or anything but- can't you join another one?" He asks with a pleading look in his eyes.

"Um, you're being a total weirdo right now," she says furrowing her brow. Why was this so important to him?

"Never mind. Can I get you a drin-"

"Ey, Jesse!" Jesse and Beca look in the direction of the annoying voice only to see a guy with a face that resembles a pig waving him over. "What the hell are you doing? Get over here!"

Jesse sighs and looks back at her. "I gotta go. I'll see you at the station, right?"

Beca's still staring at the guy, who's now glaring at her, and she notices that he's wearing the same hoodie as Jesse. Huh. Must be an a-capella thing. She turns back to Jesse and tries to ignore the urge to ask him to stay. She had been bored until he'd started bird-calling her. "Sure. It's where we work- so," she shrugs.

He grins at her, "Right. See you, Be-caw." She rolls her eyes and calls out "Please be careful" as he starts climbing over benches again to head over to his teammate.

She keeps an eye on the dork to make he doesn't trip or anything, but is then distracted by Chloe. Great; another one who just loves invading her personal space.

So...are you guys getting it so far? Like I said, future flashbacks will further explain how they got to that "rival" stage, because you can tell they were friends at some point. Hopefully, you guys will like this!

Next chapter will be from Jesse's POV and there'll be a flashback from his freshman year, too. And don't worry, they don't actually hate each other; you know I need these two to be together (it's a problem). This movie has ruined me.