AN: Bonjour once more! Boy Band fic? Yeah you read that right - every fandom needs one, lbr. So this is my first tooth/jack fic, consequently AU, and let it be known that once jack/tooth!human gets in your viens, its hard to rub it out. As for the actual idea of a ~boy band AU (who doesn't like a good concert/boy band AU c'mon), it comes from fan casting human Jack and Tooth a while back. Louis Tomlinson pretty much fits human!Jack for my friend and I, amazingly so, and without meaning to his singing career sort of bled into our human!jack head canon (some events in the fic are inspired by actual-concert happenings). There was a lot of 'how the hell did this happen', trust me. If you're not convinced, head to mundanemuggle's yt channel and look up you've got that one thing || human!jack/tooth (rotg). We've sort of generated a lot of vids/graphics/ideas revolving around this AU, so shhh just come.

So yeah, this I suppose is half crack in the scheme of things. So just sit back, and enjoy! It's a three parter and should be updated in the next three days (unlike my other fics, this is actually written out ahead of time). Thanks to nicole for the cover art!

disclaimer: I do not own rotg.

"Hey, Frostbite, shouldn't you be getting sound checked?"

Jack jerked his head up and watched as Aster padded his way towards him, one of the three other band mates in The Guardians. The familiar tattoos entwined around his wrists shone black against the lights of the dressing room, their swirling patterns referencing hope and new life. Jack had joked countless times that Aster was the hippie in the group, a hippie with a brilliant stylist – he always managed to covet his favourite jacket into his outfit somehow, much to the managers chagrin.

Tilting his head and giving his mate a slow smile, Jack flicked at the ear bud that rested on his shoulder. "Done and done. I went in before Sandy." He shrugged, "Wanted to do it before my walk-about."

Aster nodded, slouching against the doorframe of the dressing room. Jack was known to do a pre-show walk for good luck – some sort of tradition he had started years back. "Yeah well don't be too long, Phil just gave me the half hour warning and you know what he's like when he's got a clipboard in his hand." Aster made a face and the two of them snickered.

Stepping past the Australian, Jack slapped Aster on the shoulder before shooting him a mischievous grin. "Ten bucks says I can get it from him in the next twenty minutes,"

"Mate, you are asking for it." Aster rolled his eyes as Jack walked backwards down the hall, flipping a salute at him. After a pause he added, "Twenty if you can get the pen too."

"Wouldn't dream of leaving it behind," Jack turned swiftly on his heel, calling out behind him, "You'll be buying me a drink before the night is finished, buns!"

Tooth frowned at the building map in front of her, squinting to get a better look at the exits. Blowing a piece of dark hair out of her eyes, she straightened with a huff of exasperation. It seemed her little sister had led them in the opposite direction of where they were supposed to go, with little time left to backtrack. Kshamina, or Baby Tooth as Tooth liked to call her, wilted under the florescent lights as she trudged back to where Tooth was standing.

"There isn't even a washroom down there, just more locked doors." Baby Tooth pouted, her hair flouncing in two cute ponytails.

Two weeks ago Baby Tooth had been delighted – no, ecstatic – to discover her parents had gotten her into the sold out show of The Guardians, the boy band sweeping the nation. She was even more excited to discover her older sister, Toothania, better known as Tooth, would be there as well. Studying dentistry at the local university, Tooth hardly had time to see her sister with her job at the coffee shop and midterms. She couldn't say she didn't like it; she loved teeth, more than deemed normal for some.

Yeah, yeah, ironic she knew – the girl named Tooth with an obsession with teeth. She had an entire school career from kindergarten to tell her about it. But unfortunately her passion for teeth had forced her to live underneath a rock that consisted of textbooks, coffee and all-nighters for the better part of the year.

This disconnect from the outside world was only emphasized by Baby Tooth's indignant attitude towards Tooth's indifference to the band. When Baby Tooth had quizzed her earlier about the famous four, Tooth had been half embarrassed to admit she only knew of one song – in which she couldn't even remember the title of.

"Well haven't you seen posters of them?"

"Um, one of them has tattoos, right?"

"That's honestly all you remember? Aster's tattoos? Nic has them too!"

"I've listened to one of their songs on the radio – that um, beautiful song?" Tooth said defensively, hoping to prove to her sister that she had some understanding of what was happening outside of bilateral incisors and flossing. It didn't even matter, however, as Baby Tooth had already launched into another story.

"Katie saw them last spring and she said that Jack got this really small snowflake on his wrist, because you know, Jack Frost?" She giggled. "Oh and he smiled at her and she pretty much died, like right there, in her seat." She gave Tooth a knowing I-know-you-love-teeth smirk, "You'll really like him, he has one of those sparkly smiles you like so much!"

Tooth snorted, giving a playful shove to the little chatterbox – so very similar to her older sister. "Seems like someone has a crush!"

"Hey! Just you wait, Tooth!"

The conversation now was a bit more somber, what with Baby Tooth's ill prepared escapade to find a merchandise booth gone horribly wrong. As if she needed more things – she was practically a walking advertisement compared to Tooth's simple jean-and-blouse outfit. In the end, however, they had taken a turn too many, stairs – which should have been their first clue – and we're undoubtedly below the concord. Tooth was surprised there wasn't more personnel wondering about, but the cement corridor was surprisingly quiet.

"I'm never going to see them," Baby Tooth whined, hugging her arms around herself.

"You'll see them," Tooth said patiently, rising on her tiptoes to take a peek around a corner. "All we have to do is find those stairs we came down on. How about you go down there," She motioned to a branching off hallway. "And I'll continue up here? We'll just text each other if we find anything." She crouched a bit to give Baby Tooth a poke in the ribs, trying to cheer her up some.

"Don't worry, okay? You'll see them – teeth and all." Tooth repeated, flashing her little sister a grin. Baby Tooth let out a giggle before putting on a determined expression and dashed down the adjoining hallway.

Tooth watched her go, wondering if perhaps letting her younger easily-lost sister go was perhaps the best idea. She frowned, peeking at the time on her watch. Twenty-five minutes before the show opened. It seemed like a lot of time, but she knew they'd just make it if anything. Poor Baby Tooth, she'd hate to see her disappointed. As if they were lost in the underground of the arena.

It was then that someone appeared around the corner, carrying a clipboard and scribbling messily along its contents. Tooth barely registered that he looked vaguely familiar – or that he should, given he was on Baby Tooth's shirt – and felt instantly relieved. He seemed immensely pleased with himself, whatever he was doing.

"Hi!" Tooth put on a small burst of speed in order to catch him, "Sorry to bother you, can I borrow you for a second?" The brunette looked up surprised, his brown eyes widening a fraction. Her heart thumped a bit louder in her ears and she hoped she wasn't blushing. Windswept hair, tailored clothes, and those eyes – a shame he was stuck backstage. She instantly felt giddy and Tooth hoped she wouldn't fumble with her words, already smiling.

"My sister and I took a wrong turn somewhere and we're trying to head back upstairs. Would you be able to send us in the right direction?"

He continued to stare at her in silence and she felt her smile start to slip. The look he was giving her made her wonder if she had spoken English after all. Finally he cleared his throat, subtly dropping the clipboard from her view.

"You want to head upstairs?"

Tooth paused, reaching up to pull at the hair behind her ears. "Yeah, we're here for the show."

"Oh."

A brief pause.

"So,"

"So?"

She raised an eyebrow. "Are you going to help me or?" He was still staring at her as if waiting for her to say something and slightly entertained that she wasn't. After another moment he pointedly looked behind her.

"That might prove to be difficult – where's your sister?"

"What do you mean, 'difficult'?" Tooth echoed, bewildered.

"I don't know where the stairs are," He shrugged. Tooth stared at him for a moment before blinking twice. "Well not in this area, at least."

Was he new on the job, or what?

"Excuse me?" His words were slightly distorted by his breathy laughter; Tooth flushed. Had she just said those words out loud? He was now staring at her; undoubtedly amused for some inexplicable reason that made Tooth's toes curl.

Okay, so maybe choose a less-attractive-looking stagehand to help out.

"Oh! Um, I guess, ah, " Her voice came out more high pitched even to her, and she avoided his eyes. "I'll just keep going then. Thanks anyways," She half mumbled, flashing him an embarrassed smile, all too aware that she had basically tripped while maneuvering around him.

"Wait!" The boy tapped her arm lightly with his clipboard – was that a drawing of a snowman on it? – before she completely brushed past him. He offered her a one shoulder-shrug, a boyish smile crossing over his face. "Doesn't mean I can't help you, though. Here, I think I know a shortcut that could help."

He glanced causally down at the watch on her wrist and she caught a whiff of hair product and soap, his head a mere couple inches from her own. Tooth exhaled. "We should be able to make it alright." He added with a smile.

Oblivious to Tooth's reaction, he swept an arm out towards the direction she had sent Baby Tooth, nodding at her to go first. "After you," Tentatively, she went ahead as he pulled up alongside her.

"So you and your sister-?"

Tooth cleared her throat, "Yeah, she's up here a little ways. We were trying to find one of the merchandise booths', you know, the ones that sells bracelets and t-shirts? She's eleven, I can't blame her entirely for getting us lost, even though I did warn her." He walked easily alongside her, nonplussed by her talkative nature. He even smiled when she mentioned the getting lost bit. "It's her first Guardian concert – she's really excited. Plus we've got some fabulous seats – third row from the front! Her eyes nearly popped out of her head when she saw!" She made a gesture of exploding eyeballs just for his benefit; his laughter was warm and surprisingly boyish.

"And you?"

"What about me?"

"Excited?"

"Oh, yes of course!" Tooth bit back her tongue – she didn't quite want to admit she knew so little about the band. Baby Tooth had already emphasized her under-the-rock status, she didn't need to demonstrate this to a stranger.

"What about you?" She asked before instantly feeling stupid – he wasn't there for pleasure, he was obviously working, what with that clipboard and everything. She didn't see an ID badge though, but he have an ear bud dangling around his shoulder.

"Me?" He chuckled, but his expression changed to one of thoughtfulness. He sneaked a peek at her before shrugging, "Well I'm working, but I enjoy my job." He turned his head casually away from her so she couldn't see his smile. "But eh, I've seen better."

"You really think that?" Tooth felt weirdly defensive, side eying him.

"Oh yeah," He nodded with vigor. "Rubbish. Heard one is obsessed with Christmas or something. Weird, don't you think?" She missed the way he kept looking at her, as if he was waiting for her to catch him with his hand in the cookie jar.

Feeling the need to defend her sister's band, Tooth tilted her chin up at him. "I think they're really fantastic, actually."

"Really?"

"Absolutely." She said more confidently, knowing Baby Tooth would be proud.

"Even that, oh what's his name, skinny, mop of brown hair fellow-?" He snapped his fingers, as though trying to remember.

"Jack!" Tooth exclaimed, a smug smile spreading over her face. "Yeah, he's really great too." He shot her a bemused smile that sent waves down her spine. But it was haughty enough to make her feel the need to prove her point. Ineffectively, as it turned out, and the next three words tumbled out of her mouth. "He's my favourite."

Well, Baby Tooth had said he had the best teeth. ... It made sense at the time.

He looked genuinely surprised for a moment. "Jack?"

"Yes." She answered. His eyes found their way back to hers almost methodically.

Tooth wilted, breaking eye contact as if he could see through her. "Well, okay, sort of. I've uh, been sort of out of the loop of things. I don't actually know too much about them. But I've seen, um, glimpses here and there. On my sister's t-shirt." She felt like a tomato.

"Oh."

Another beat of silence.

"So your sister's a fan."

"Massive," Tooth nodded, glad to divert the attention back to her sister. "She's the reason I'm here. She's pretty determined to make me a Guardian fan like herself, reassuring me there's no way I can come out of this concert without falling in love with at least one of them." She laughed and rolled her eyes; she missed the quiet boy beside her. "I guess I said Jack earlier because, well, she's been telling me he's got really, really nice teeth."

He seemed genuinely taken back by this.

"Teeth?"

Tooth's smile froze – geez, way to tip off that she was a bit stranger than most folks. "Uh, yeah! Teeth!" She laughed, rubbing a hand up her arm. "I'm studying to become a dentist, so teeth are something that's always on my mind." She couldn't stop talking, "She's always saying that the only way I could ever properly fall for a guy is if he has teeth as white as sn-" Thank god her phone beeped just in time, cutting off an embarrassing commentary about why she enjoyed people's teeth so much. Keep it together Toothania, please.

She fished the phone out of her pocket and saw that it was Baby Tooth. Apparently she had found her way back up to the main concord and was sending directions for Tooth to follow.

"Ah, my sister says the stairs just ahead of us, apparently." Tooth spun on her heel to look down the hall and sure enough, there was the sign, glowing in the distance. "So you were leading us in the right direction after all."

"Glad you had such faith in me." He put a hand over his heart in mock hurt, and he was delighted to receive a laugh in response. There was a short awkward pause, neither willing to leave just yet.

"Well, thanks!" She said brightly, feeling her cheeks redden again. "Sorry for taking you away from your job."

He gave her a nod, his eyes however, held curiosity. "No problem, uh – sorry, I never caught your name?"

Times like this Tooth wished she didn't have such a unique name. "Toothania," She pocketed her phone with a wince, "I know, ironic, right? My friends and family call me Tooth, too."

He didn't laugh, but he did grin. A grin that made Tooth's fingers tingle alarmingly. "You know, it fits you. In more ways than you would think."

"I suppose I'll take that as a compliment?"

"Please do."

Tooth bit down on her lip, attempting to stop the big, fat grin from spreading across her face. They looked at each other for a few more seconds before Tooth's phone buzzed again in her pocket, reminding her Baby Tooth was waiting. "Well, um, better get going then." She smiled as she began to walk backwards towards the stairs.

"Enjoy the show," There it was again, that amused little smile of his. But this time his teeth were showing and Tooth was half convinced they were the brightest, pearliest teeth she had ever seen. "Oh and Tooth?"

She leaned against the door, liking the way his voice said her name, her eyes fixated on his mouth.

"Mmmm?"

"The show? I think you're really going to love it."

She blinked, watching as he tapped the pen twice on his clipboard before twirling gracefully towards the opposite end of the hallway.

It occurred to her she never asked for his name.

In the hour following, it seemed everything picked up speed.

After the opening gig, the buzz of excitement in the audience doubled ten fold. Once the lights had faded and the swirling tendrils of smoke scattered across the stage, Tooth found herself bouncing on the balls of her feet to get a better view. The crowd appeared to collectively hold their breath before exploding with noise; clapping, hollering and screaming. Tooth winced and held up a hand to her ear, but overall grinning. Her sister snatched her arm and shook it wildly, her eyes shining. She stood precariously on the tip of her seat, adamant to get a better view.

Tooth couldn't hear what she was saying, but her shining eyes conveyed as much excitement to get a good enough idea. Placing a balancing hand on her sister's back, she looked back at the stage, worried that she'd miss their entrance. She felt her heart jump wildly in her chest, the entire arena pumping with energy that felt like crackling static. People started to move, jumping and waving ecstatically.

Four silhouettes came into view– clearly male – and the crowd erupted in screams. She didn't expect anything less from a crowd majorly made up of girls from twelve to twenty five, and so swept up in the moment of a surging group of enthusiasm, she found herself joining in. Baby Tooth was grinning and pumping her fist, loud and tiny up on her perch.

Vibrations shot through the floor as the screen behind the boys counted down and the music began to play. Still hidden from the beams of light, the audience waited. Suddenly the group exploded out of the shadows and into the bright light of the stage, microphones at the ready as they ran towards the edge.

Eyes wide with a mixture of disbelief and exhilaration, her bright eyes danced over the boys, when her eyes landed on a very, very familiar face.

Tooth sucked in a breath and choked. Baby Tooth cast a worried look at her as her sister, who stared in horror at the face of the stagehand ... that was currently addressing the crowd along with the short blonde – Sandy?

The brown-haired star bounded in a half-skip towards the edge of the stage where Tooth and her sister were crammed three rows back from the front; Tooth's eyes never strayed from him as their previous conversation played painfully over and over in her head. She wouldn't be surprised if her jaw was hanging comically open, her ears already a bright red.

"Burgess! How ya' doin' tonight?" There was a roar of noise in response. He grinned an incredibly cheeky grin, causing Tooth's stomach to flip. The shine of the spotlight didn't help but illuminate that smile, and she could only remember what she told him: "I guess I said Jack earlier because, well, she's been telling me he's got really, really nice teeth."

She attempted to hide, rather pathetically, but she was eighty-nine percent sure if he looked close enough he would see her. After all, hadn't she told him where she was sitting? Perhaps if she bent her knees awkwardly, she could blend out of sight ...

The brief interlude ended as the boys effortlessly weaved amongst themselves on stage, and her eyes kept trailing after him like a magnet. He interacted playfully with the others; Nic, practically all muscles and the voice of a Russian Ewan Macgregor (he kept encouraging the crowd to join in, and the crowd collectively obliged his many requests (and there were many)), Aster, the tattooed hippie who bounced more than walked, and Sandy, the unsuspecting troublemaker who played mostly on his guitar. And then there was Jack, impossibly immature as he worked his way up and down the stage.

... Did Sandy and Jack just attempt to do a spinning high five?

They crossed over to the right side of the stage, conveniently where Tooth and her sister were standing, and she wondered (re: prayed) if the spotlights really did blind those on stage. His brown eyes swept the crowd as he crooned into the mic, with one hand placed over his stomach as he sang. Honestly, if she wasn't so preoccupied with trying to hide, she'd congratulate them on their ability to look so good while singing. And their flossing.

Jack's eyes caught sight of a vibrant mix of colour against dark hair, and they trailed down to the awkwardly crouched Tooth, his eyes lingering far longer than his usual audience glances. It was then that Tooth realized that she was not hidden, that he could most definitely see her, and that half the people around her were noticing the obvious eye contact she was making with the uber famous Jack Overland Frost.

With as much dignity as she could muster - and a slight tickling sensation that swept up her arms - Tooth rose to her full height. Heat spread across her cheeks, but her eyes remained fixed on his, as if challenging him to question her previous position behind the hair of the girl in front of her. There was a pop of a flash – someone's camera – and the connection was gone. Jack's eyes eased up and he was already racing to fall in line with his fellow mates. But before he stepped away, he flashed Tooth the biggest, cheekiest, amused grin and dropped a wink.

Tooth may have swooned, just a bit. Tiniest bit. Reality: big fat lie, she was grinning embarrassingly back with the stupidest expression on her face.

"Jack looked at you! He properly looked at you!" Baby Tooth squealed into her ear, pulling Tooth down so she could hear. Tooth exhaled, her face a deep shade of red. The small girl held up her phone breathlessly, "And I got it all on camera! He just – Sis, are you okay?"

"You know how I got help from a stagehand?" Her eyes trailed after the brown haired singer. Baby Tooth scrunched up her face in confusion.

"Yeah, so?" There was a trace of impatience in her voice.

"Well, okay don't freak out too much, but thats, um him." He pointed towards the stage, "Jack Frost."

There was a beat of silence as the crowd exploded with cheers as the band launched into their next song. Then Baby Tooth was grappling onto her arm and screeching into her ear so loud Tooth nearly toppled over.

"You wHAT?!"

By the time the concert was three quarters through – and Baby Tooth had held off on quizzing her to actually pay attention to the concert – Tooth had managed to relax some. Her heart still pounded loudly whenever a certain member expertly moved towards her end of the stage. Consequently she would become incredibly fascinated with the backdrop, but overall, the embarrassment started to slowly ebb away. She didn't want to duck out of the concert anyways – it was fairly good – no matter how much she felt like a dumbo for mistaking Jack Frost as a stagehand. Beside her Baby Tooth continued to film the entire performance, side eying Tooth every once in a while. It was a look of of jealousy and awe.

During a slow song, Nic came striding up to their side of the stage, giving a hefty wave to the screaming crowd. Aster was currently taking over a solo and Nic seemed more than happy to cause a little good-natured fun.

"I'm going to try to see if I can squeeze in!" Baby Tooth shouted at her sister as she scrambled to the group of girls smashed against the stage rails. Tooth tried to make a grab at her arm, urging for her to be careful, but the spirited fan was all too determined to get a better shot of the muscular Russian.

Nic directed his attention to the group before him, flashing a wink at them before jumping off and into the space between rail and stage. A security guard seemed rather displeased by this, but Nic only patted him admirably on the back. "Chuck, is good, alright?" The security guard made a grumbling noise but didn't push it.

From her spot in the crowd, Tooth smiled as she watched Nic interact with the fans at the front. Every so often he'd sing into his mic and smile, touching hands with those in the crowd and doing silly poses for some of the cameras. He even took requests; someone dared him to imitate a reindeer and he seemed delighted. She could see Baby Tooth jumping up and down and wriggling to the front, and Tooth was scared that she'd be crushed because of her size. But as if by a miracle, Nic caught a glimpse of the pig-tailed girl and laughed, his whole body shaking as he did so.

Baby Tooth squealed when Nic swiped her phone from her grasp and bounced away with a secretive smile. He was back on stage within seconds - Nic sure was agile concerning is bigger frame – and was already moving around the phone to get a panoramic view of the arena. Baby Tooth cast a glance back at Tooth with an expression that made her laugh, and she flashed her little sister a thumbs up.

Aster bounded over to Nic curiously as Jack took on a solo, and Tooth's gaze instantly flickered over to him. He was at the other end of the stage, but he had enough stage presence to fill the entire room. She had been avoiding staring directly at him, for fear he'd catch her staring. Perhaps a silly anxiety, but she didn't want to add that to her list of embarrassments for the night. But now that he was preoccupied with his solo, Tooth let herself stare openly. He really was extremely talented, and to the moon and back, those teeth -

She blinked as he turned his attention away from the audience as Aster took over once more, Jack's eyes falling on Nic as he did a close up of Sandy's feet. His face crinkled as he laughed, and he playfully snatched the phone out of Nic's hand. There was a hushed conversation as Nic pointed and waved to Baby Tooth who ecstatically waved back, revelling that her phone was changing hands to each member. Jack looked startled for a moment, his eyes looking down at the phone in his hand then back to Baby Tooth – and skipped to Tooth in the crowd with more ease than she thought possible.

They shared eye contact again for the briefest of seconds and embarrassingly for him, he forgot his cue to rejoin into the song. Aster shot him a look as he cleared his throat, coming in late for the chorus. Tooth felt the eyes of those around her and ducked her head apologetically.

Whoops.

She bit down her lip to keep from giggling, a rush of giddiness rushing over her. Warmth spread from the tips of her ears down to her toes, and couldn't help but feel some sort of accomplishment for distracting Jack, no matter how ridiculous it seemed. She cleared her throat, straightening herself. Keep it together, she reminded her self once more. You're almost as bad as Baby Tooth.

Jack himself took some footage with Baby Tooth's phone, and when Nic gestured for him to give it back, he held up a hand. Sandy and Aster took to the front of the stage to address the crowd as the song ended, but Tooth was distracted when her phone buzzed in her pocket insistently. Absently she plucked her phone from her jeans and unlocked it, trying to catch a glimpse of Jack. She barely even registered why it might be strange that Baby Tooth was texting her until she read the text.

enjoying the show?

She stared at the words for a moment, scared to even look up at the stage. Aster and Sandy continued to talk over the speakers, but they were completely drowned out by the sound of blood rushing in her ears. Her fingers hovered frozen above the keys, her mind blank and remarkably unhelpful.

She nearly jumped when it buzzed again in her hands.

that bad, huh?

Tooth jerked her head up to find Jack casually sitting on the ramp leading to the second story stage. He looked perfectly innocent, the phone hidden from view as he looked on as Aster described their new single.

Before she could second-guess herself Tooth mustered all the confidence she had to click send.

didn't know that part of the show involved thievery

Almost as soon as she sent it, another message was shot back.

i told u they were rubbish

She clapped a hand over her mouth to stop the goofy smile.

Ping – another follow up message.

unfortunately my job requires me – meet me at the stage half hour after the show. bring ur lil sis :)

Tooth's stomach fluttered as she reread the message over – four times, perhaps five – and cast a glance up at the stage. Jack had moved from his position on the stage's ramp and was leaning over the edge to return Baby Tooth's phone, smiling brightly at her. The band was already launching into their next song, and not a moment later he was trailing after Sandy and singing alongside him. Was it just Tooth, or was his grin bigger than before? No, couldn't be, could it?

... Oh for Pete's sake, if she dreamt about those teeth tonight - a high possibility - it was entirely his fault for being such a cheeky son of a gun.