Title: Sky Dive

Rating: T, will go up in future chapters.

Genre: Angst, Family Romance (not sure yet), Adventure, etc.

Summary: When Reborn was assigned to tutor Sawada Tsunayoshi, he was told the boy was clumsy, non-athletic and dumb. Overall, no-good. However, as he stares at the groupie surrounding a smirking Tsuna, he thinks that the reality is totally different. AU, Rockstar! Tsuna.

Disclaimer: I don't own Katekyo Hitman Reborn, only the plot.

Warning: Language and Violence; Extreme OOCness; Unbetaed; Tsuna-centric; Asshole!Tsuna (most of the time anyways).

Announcement: I had to write this. It was just a plot bunny that I had for a while now. I will update 'What if?' as soon as I can, I already started to write the chapter, so yeah. I will take into consideration any pairings you all would like to see involving Tsuna, or if you don't want any romance and want it to remain Familial. By the way, Nezu is teaching in Nami-high so yeah.

Beta-ed by Sailor Dying-Will.

"(1) Musabetsu-Tsuna," Reborn, a baby with a yellow pacifier, fedora and suit, growled when he opened the door and saw his troublesome student. Blankets wrapped around him and a red-headed woman who looked about in her early twenties, soft breathes and snores the only noises even as he walked into the room, taking everything in. Pieces of clothing all over, looking like they were thrown in a drunken frenzy. A few condom wrappers were on the floor and a small, sardonic smile adorned his lips; at least his student was using protection.

It had been about two weeks since he'd arrived to the Sawada household and around the same time, he had taken the habit of dragging his student back from different women's and even some men's houses, but he had his suspicions that that was more to spite Reborn than anything.

When he had gotten to Japan and the Sawada household, he'd thought his job was going to be easy, just train a no-good kid and groom him to be an exceptional Mafia Boss. Once he met Sawada Nana however, he suspected that something wasn't quite right (and how right he was):

"Ciaossu," Reborn greeted once the door opened, he expected to see a smiling and carefree woman, but he was taken back when the woman he saw was a woman with sharp, intelligent eyes and slight frown lines. Her posture was tense as if she was expecting someone else, her eyes narrowed slightly when she noticed that it was Reborn and her lips curved into a warm smile, but her eyes remained the same.

"Hello, little boy. Who are you?" Nana questioned gently, she might not be in the best of moods but she didn't want to be rude. He looked to be about 2 years old in a small suit, a bright yellow pacifier around his neck and a small chameleon on his fedora. Overall, he looked like a normal child, if a snappy dresser, but his obsidian eyes and overall demeanor were too intelligent, too menacing to be one - almost as if he was a hardened man trapped in a baby's body.

The thought alone sent a shiver down her spine. But... that couldn't be possible... right?

"I'm the home tutor, Reborn." The almost dark purr nearly made her jump out of her skin.

He hadn't done anything to her but she felt unnerved so she did what she did best‒act naive, as if she didn't know just how dangerous he felt. "Is that so? Well, call me Maman then." Putting a hand on her cheek, she smiled as naturally as she could. She tried to wrap her mind around the fact that someone so dangerous was going to be tutoring her baby. Her baby.

Turning him down wasn't an option, she realized.

"Thank you, Maman. May I ask where Tsunayoshi is?" Reborn tilted his fedora, he realized that Nana wasn't as naive as Iemitsu had described her. She seemed to be aware of how dangerous he was and tried to hide it by acting naive. He wouldn't have noticed if he wasn't the World's Greatest Hitman.

She hesitated; on one hand, she didn't want someone like Reborn so close to her baby, but on the other hand, if what he said was true... then he could help her son and straighten him out. Taking a deep breath, she made her decision.

"Tsu-kun is with one of his... friends. He should get here soon though," she answered, her gut saying that she did the right thing trusting the small 'baby'. With a nod, she made her way to the kitchen, all the while praying that Reborn was what Tsuna needed to become better.

As Reborn watched her leave, he realized how much trust she put in him by even answering his question and his lips tugged down. He needed to talk to Iemitsu about how wrong he was about his wife.

Taking a deep breath, he hoped that at least the information about Tsuna was right but judging by Nana's tone of voice, he doubted it was.

Reborn knew that Nana hid behind a carefree but naive facade, knowing more than she was given credit for. She had everyone fooled except for himself... and Tsuna.

His first meeting with his troublesome student was, in a few words, pretty fucking bad. Tsuna was amused and Reborn was already irritated with all of the wrong information he had been given and his student's attitude hadn't helped:

Reborn watched at the base of the staircase as the knob turned and the door slowly opened, a head popped from behind the door and quickly looked around, giving a sigh of relief when he realized that his mother wasn't there, waiting for him. His eyes finally landed on him when Reborn cleared his throat.

The figure stepped inside, closing the door gently while he eyed the small baby in front of him with interest.

"Ciaossu," Reborn greeted, taking in his new student, noting he looked somewhat familiar. Fluffy brown, shoulder-length hair swayed to the side when Tsuna tilted his head, chin-length side swept bangs pinned to the side, caramel doe eyes, with a hint of orange looked him over. An orange, too-big for him, jacket showed off one of his shirt clad shoulders and ripped skinny jeans.

On his neck was a hickey. So that's what Nana meant, Reborn almost wanted to groan because he knew that his job had just got harder. A Mafia Boss couldn't be running off and sleeping around, he had to be responsible and think about his Family.

One thing was certain though, he was going to shoot Iemitsu the next time he saw him. So far all of the information he had was proven wrong.

"Hey, who are you?" Tsuna asked. He gave an amused but tired smile and a chuckle when the baby looked at him incredulously as he heard his husky and smooth voice. However, as amusing as it was, he was tired. Luckily enough, his hangover was better and his mother wasn't here screaming at him. But, he eyed the baby, he had a feeling that his life was going to change irreversibly. It made him want to run away and not look back.

"I'm Reborn, your new home tutor," Reborn responded, expecting him to at least freak out or laugh ‒ which, to be honest, he was hoping for as he felt the need to kick someone ‒ but to his growing frustration, the brunet only cursed and began to walk up the stairs.

"I'm too tired for this shit," Tsuna groaned, opening the door to his room. Flopping down on his bed, he yawned when he noticed that the baby had followed him.

Great, a baby was his home tutor. Hell, he didn't even know he was going to get a home tutor in the first place.

"Dame-Tsuna, don't walk away from me."

Tsuna burst out laughing when he heard that nickname. It honestly brought back memories when he was much younger and he used to be bullied. "I haven't been called that since I was 5 years old, kid." He was far from Dame now. Maybe if he was still 13, it would had broken his confidence or some shit like that but he was 16 now and confident in himself, being called that didn't do anything more than make him laugh.

Reborn's eyebrow twitched in annoyance before he kicked Tsuna in the stomach.

Yes, he was positive that they were going to have problems.

When Reborn told Tsuna he was going to train him to be a Mafia Boss, he had bluntly refused, claiming that he was a famous rockstar. Reborn didn't believe him until a few days later when he heard Tsuna sing a small portion of one of his songs. That made his job even more fucking harder than before and his student wouldn't answer any questions he had about his profession or even why he was a rockstar in the first place. No matter how much he... tutored him.

However, it all explained why Nana was so tense when she'd answered the door that day or why she had problems making Tsuna listen to her. Nana trusted Tsuna to his care and he was the World's Greatest Hitman, he would make Tsuna listen to him even if he had to pound it into his head. His behavior was completely and utterly unacceptable.

With that in mind, he transformed Leon into a mallet and dropped it on Tsuna's head, hitting him on the side of his head. Instantaneously waking up, Tsuna cursed as he slowly sat up with a scowl and a hand on his head.

"What the fuck?" Tsuna murmured, rubbing his injury with a groan. His head was pounding and throbbing, he'd drank too much again. He felt a warm, soft body pressed against his own and looked to the side. She had a pretty cute face and from what he could see through the thin blankets, a nice body too.

She was probably one of his fans, he noted offhandedly.

"Get dressed," Reborn ordered, throwing Tsuna the jeans he retrieved from the floor. It was sad that he'd already gotten used to seeing his student like that; it was a routine of some sort. Training him wasn't enough. He needed his Guardians. Maybe with them around, he would become a more grounded person or something close to it.

Tsuna caught the jeans and sighed. His eyes snapped to the woman — Miku? Mai? — when she stirred, slowly sitting up. Her eyes lighting up when she saw that he was still there. It made him want to groan because he knew that she thought that him still being here meant something. That was the reason why he always left before his partners woke up.

He stood up, fastening his jeans as he ignored the eye-fucking she was giving him. He didn't have time for another round nor did he want it, besides Reborn was getting impatient which would make him even more of a pain in the fucking ass.

He saw his shirt close by Reborn and frowned. "Oi Reborn, pass me my shirt."

It seems that was all she needed to notice Reborn, Tsuna thought as she snapped her head in the direction he was looking at, shrieking as she covered herself with the blanket.

"Who're you? And what're you doing here, kid?! Don't you know that the adults want some alone time?"

Reborn smirked, humor dancing in his eyes and twisting his thin lips. Throwing the shirt at his student, he drawled out, "I'm Musabetsu-Tsuna's home tutor."

She scoffed, "Very funny, kid." and turned to look at Tsuna instead. "Why is he here?"

"He came to pick me up," Tsuna responded curtly, standing as he put on his shirt. He didn't need all of this shit so early in the morning, she was making his hangover even worse with all of these questions.

"What?! You're leaving already?!" she demanded heatedly, looking forlorn. She stared at him when he sat again to shove his feet into his boots.

"Yeah, sorry, Mai." She gasped, outraged.

"I'm not Mai! My name is Miyu!" she snapped.

"Yeah, sure, whatever." Tsuna continued with lacing up his boots. Miyu's eyes glistened with unshed tears, her bottom lip trembling, as she hugged her blanket to her chest. She couldn't believe that he would act so dismissive after a whole night of great sex and him whispering sweet nothings in her ear. She thought that maybe… maybe they could get to know each other or… or something.

Tsuna stood and ran a hand through his hair, eyes not even softening at her heart-broken expression. He'd seen that expression on so many other girls it no longer fazed, he also ignored the small pang of guilt.

"Wait! Where are you going? What about everything you told me last night, huh?!" she screeched reaching out to him, her face twisting into a disgusted expression. "You're just going to leave me here, you asshole?!"

All traces of guilt disappeared instantaneously. His lips curled into a smirk, eyes mocking her as he put his hands into his back pocket and walked out of her reach. Tilting his head, he purred darkly, "Well, sorry, baby, but you're not the only one I've fucked." Seeing her crumbling expression, his smirk widened and he scoffed. He grabbed her chin, tilting her head back, making her see his now deep, glowing amber eyes. "What? You thought you were special? Give me a break. Whatever I told you last night was probably something I've told every other person I've fucked. Better get down from that high horse you're on, sweetheart."

With those words, he let go of her chin and took a step back. He made his way to the door, slamming it shut once he left the room. Sobbing was the last thing he heard when he left the house.

"Musabetsu-Tsuna, you shouldn't have treated her like that," Reborn said, jumping on Tsuna's shoulder and tugged on his brown locks harshly.

Tsuna merely shrugged. "That has nothing to do with you." He winced when Reborn delivered a hard smack to his head. Pouting, he rubbed the sore spot before he reluctantly tilted his head in acknowledgement, sighing. That was the most he would do to indicate that Reborn had a point but wasn't going to actually say it out loud.

Neither said anything else as they made their way home.

Tsuna yawned as he walked into his class. He was only 10 minutes late this time which, if he was being honest, was a big improvement. Even Kyouya let him off the hook and only glared at and threatened him. God, his band mate was so uptight when it came to the rules.

He ignored the stares of most of the girls and even some of the guys. Nezu's, his teacher, face converted to an ugly sneer as he tried to stare Tsuna down. Really, his teacher had something against him for some reason, which on most days, was amusing but he wasn't in the mood for it today. He hadn't even wanted to come to school. Turns out that Reborn didn't care that he had a hangover, this was going to be part of his punishment for treating Miyu as he had.

"It's nice to see that you're not too late, Sawada." Nezu sneered, fixing his glasses. He tried not to flinch at the glares he was receiving from the majority of the students.

Tsuna merely ignored the man, heading to his seat. He sat down and put his feet on top of the desk, eyes challenging Nezu to say something, but, as Tsuna predicted, he only seethed in anger before turning to write on the board.

He stared out of the window, lost in thought. Completely oblivious to the sudden increase of chatter in the room or to the sound of the door opening. Until he felt his desk toppling over and almost falling down in the process, his quick reflexes the only thing that saved him.

The room got quiet, not a single person uttered a word.

"What the fuck?" Tsuna growled, standing up to glare at the offender. A silver-haired boy with green eyes glared right back.

He narrowed his eyes, that shade of green was familiar. He couldn't put his finger on where he had seen them before though.

"You're unworthy," the boy hissed, hands twitching as if he was fighting the urge to take something out.

Tsuna eyed him, frowning. "I don't know what the fuck you're talking about." He easily dismissed, the boy wasn't worth his time. He sat back down after he righted his desk.

The boy growled at him one more time before he walked to his seat.

"Hey, who was he?" Tsuna asked the person next to him, Sasagawa Kyoko—a pretty girl with golden brown hair and bright honey eyes.

Kyoko blushed slightly and answered, "Gokudera Hayato. A new transfer student from Italy."

He gave a sigh because he had to have seen it coming. Reborn must have called this kid or something, most probably to test him. He wasn't really that surprised, knowing Reborn from the short amount of time together, the baby seemed to take pleasure in torturing him. He ruffled his own hair slightly, knowing that by the end of the day, he would have a headache.

He ignored the glare burning a hole in the backside of his head.

Maybe if he ignored the pest it would go again.

He disregarded his gut feeling saying otherwise.

Tsuna knew he was fucked. He had tried so hard to avoid his fans that he had forgotten about Gokudera whom he had bumped into after going to the back of the school.

"If a bastard like you becomes the 10th Generation Boss, the Vongola Family is finished," Gokudera declared. He wouldn't let such person become Vongola Decimo. A spoiled, arrogant brat whom didn't seem to care about anyone but himself.

Tsuna frowned. He wondered how Gokudera came to such a conclusion. He could admit that he was indeed a bastard, an asshole, a jerk and more even, but it wasn't like he did anything to him or even acted like that when he was in class today.

"I'm the one fit to be Decimo!"

He stared at Gokudera and smirked. "Go right ahead, sweetheart. I don't want the title." Tsuna just knew that would set the guy off, but he couldn't help himself, the silverette looked fun to bug in his opinion.

Gokudera seethed at the endearment, his patience finally snapping. He lit a cigarette and brought out two dynamite sticks, lighting them up and throwing them at this bastard whom didn't even move, an amused glint in his eyes.

A shot rang out and the wicks of the dynamite was cut.

"Ciaossu."

"Reborn," Tsuna greeted with a nod.

"You came earlier than I expected, Gokudera Hayato," Reborn said, a smirk adorning his face. Inside though, he was scowling, he had hoped that his student would have at least freaked out or even get nervous.

"So you two do know each other," Tsuna stated curtly.

"It's my first time meeting him." the Arcobaleno admitted.

"So you're the 9th's highly trusted assassin, Reborn," Gokudera observed, respect in his eyes as he looked at Reborn. "So if I kill Sawada, I get to be a candidate to the Decimo title?"

Tsuna scoffed. "You don't have to kill me to get that. Like I said before, sweetheart, go right ahead." He waved his hand dismissively before his eyes flashed for a second. "However, you can't be the successor even if you wanted to. You don't have the Vongola blood. So either you know that or you're being played by Reborn. Tsk, tsk, tsk." He smiled mockingly, his finger wagging in the air, at Gokudera.

Gokudera froze, his lips curled into a snarl and puffed a bit of his cigarette. Lighting up the dynamite in his hands, he threw them at this cheeky bastard.

"He's also known as Smokin' Bomb Hayato," Reborn commented.

Tsuna gracefully dodged each of the dynamite that Gokudera threw at him, looking almost bored about being blown up.

It continued like that for a good 5 minutes, Tsuna dodging and occasionally defusing the dynamite sticks while Gokudera continued to throw them, adding more and more. Until Gokudera finally made a mistake, a dynamite stick fell out of his grip, startling him and making the rest fall as well. A look of horror crossed his face at his fatal mistake.

Tsuna clicked his tongue. He could run away and let Gokudera die or he could save him and possibly get injured.

The answer was obvious.

He ran toward and tackled Gokudera to the ground, rolling them to put distance between them and the dynamite. Tsuna ended up on top of the silverette so he used his own body to cover him in case the explosion still reached them.

A second later, an enormous explosion resonated across the whole place, taking out a piece of the back of the school in the process.

Reborn quickly jumped to where his student was. He should have used the dying will bullet, he just hoped his student wasn't too injured. A sigh passed his lips when he saw that his student was only dirty and not injured, it seemed like the distance they had gained was enough to not get caught up in the explosion.

Tsuna got off Gokudera and flopped down next to him instead. He blew the bangs out of his eye and glanced to his side at the still shocked boy. "Oi sweetheart, you alright?"

"W-why did you...?" Gokudera choked out, fidgeting as his face flushed bright red at his—hopefully—new boss's endearment. Truth to be told, no one had ever saved him before except for a kind, bright-eyed boy whom had given him a red dog tag he still wore.

Reborn stared as his student rubbed the back of his neck in a, dare he say, nervous manner. If he wasn't Reborn, his jaw would have dropped in shock.

"I know I'm a bastard, but I'm not heartless enough to let someone die in front of me. It's just wrong, y'know?" Tsuna shrugged, not looking at Gokudera. His head snapped up though, when he heard sniffling. His eyes widened when he saw unshed tears in Gokudera's eyes. He hadn't insulted him or anything, so why...?

"You're the one fit to be the boss!" Gokudera suddenly got up on his knees and bowed down, his forehead hitting the ground. Tsuna could only blink as he tried to process what was happening. His caramel eyes immediately zoned in onto the now visible bright red dog tag around the silver-haired boy's neck.

He knew that tag! Tsuna sat up and reached out for the tag, startling the silverette at the sudden closeness of his new boss. He took hold of the tag, ignoring the flinch from the other, and brought it forward to read on it: Storm.

"Ah…" Tsuna's eyes started shining with a gleeful light. "It's been a long time, Ducky," Tsuna murmured, gracing Hayato with a small but warm smile. An expression that only a handful of people had seen on the brunet's face.

"W-wha...?" Gokudera could only open and close his mouth when Tsuna brought out his own orange dog tag from under his shirt. He could just barely make out the word Sky on it. "Tuna?"

"Yo," Tsuna said, leaning forward and brushing his lips softly against Hayato's—not Gokudera anymore, never by his last name—, his Ducky, in greeting.

Hayato only smiled bashfully when Tsuna pulled away. The smile slipped off his face, his expression stern, when he remembered something. "So... Vongola, huh?"

Tsuna shrugged sheepishly and winced when Hayato pulled one of his cheek hard. "Ow, ow, ow!"

"Dammit! You're nothing but a trouble magnet!" Hayato's stern expression didn't last long before he gave a long sigh, a look of resignation crossing his face.

"It's not like I want to be a Mafia Boss. I'm already a rockstar," Tsuna complained, standing up. He looked at the back of the school mournfully, knowing full well that Kyouya was going to come after him later. He would have to run and try not to get caught.

"Rockstar?" Hayato pulled himself up, stretching once he was stood up. He actually looked at his childhood friend and noticed how much he had changed. The once warm and kind eyes had hardened, holding a hint of mockery and only softened and warmed slightly when looking at him. This new version of his friend oozed charm and sex, looking nothing like the shy kid he had once known. Then again, the last time he had seen Tsuna was when he was 8 years old.

"Yup, ever heard of Sky Dive?" Tsuna smirked when he saw Hayato's jaw drop. He was even famous in Italy. How his father didn't know, he wasn't sure.

Reborn didn't interrupt even once, more than happy to gain information about his student from the conversation he was having with the other Italian. Even he had being shocked—not that he showed it, of course—when he found out just how famous Sky Dive was and realized that he, Reborn, liked one or two of their songs. He remembered hearing some of their music in the streets of Italy.

"Come watch us practice tomorrow," Tsuna ordered, he wasn't going to be denied that. He was going to spend as much time as possible with Hayato. This was the first time in 8 years since they'd spoke, after all.

Hayato merely nodded, eyes twinkling in amusement.

Reborn cleared his throat. "I'll be going too, Musabetsu-Tsuna."

"Eh? I didn't invite you," he retorted.

"I'm coming anyway, Musabetsu-Tsuna."

"Tch. Whatever," Tsuna murmured.

Reborn smirked, knowing he won that round.

"Oi, you're cutting class. You're only allowed to cut starting Senior Year," a voice sneered. Three big seniors appeared, smirks on their faces dropping once they saw Tsuna.

"What, you think you're special just because you're famous?" the second senior growled.

"Don't think you're all that just because you have a little money, Sawada." the third one snapped, scowling and glaring at Tsuna.

All three only focused on Tsuna, ignoring Reborn and Hayato.

Tsuna barked out a harsh laugh. "You three say that but I can hear the envy in your voices. You wish you were me." He looked them over, smirking mockingly. "But no one would waste a penny to even look at you."

"Fucking son of a bitch!" the first one snarled and they started advancing towards him, only stopping from their goal because someone appeared in front of them.

"How dare you insult the Tenth? I'll get rid of you all!" Hayato hissed, bringing out his dynamite.

Tsuna smirked, ignoring the cries of mercy from the three seniors. If he was a better person, he would have told Hayato to stop but he wasn't so he didn't give a fuck.

It was a plus that it was so entertaining to watch.

(1) Musabetsu-Tsuna: Promiscuous-Tsuna; Reborn calls him that because Tsuna likes to sleep around with different people, rarely sleeping with the same person twice.

Sorry if everyone is so OOC, I tried to make them as in character as I could.

Anyways, I hope you all enjoyed this and review.