Disclaimer: KHR is not mine.

A/N: Really, the fandom needs more fantasy fics XD

Warning: This fic is AU! For those who don't know what AU means well, it's short for Alternate Universe! Still don't get it? Go google XD This chapter contains very mild shounen-ai implications. And future chapters will include shounen-ai situations since I'm a rabid 27 fangirl XD This is my first Rebo fic and my first fic in like… 2 years, so sorry for my amateur writing XD Beta-ed by the amazing Aquarius13. Arigatou! XD

Anyway, on to the fic!

Chapter 1: Prince Post-it

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'Gone on vacation

-Dad'

Sawada Tsunayoshi, a not so normal teenager, read the yellow post-it on his bed post with sleepy eyes. He squinted a little, trying to process whatever was written on the flimsy sheet into his system. And then, his eyes widened.

"MOM!!" Tsuna, or so he was popularly called, literally ran down the stairs in frantic search for his mother. The familiar bacon-y scent of breakfast told him that his mom was probably in the kitchen. He opened the kitchen doors and there stood his mom, doing whatever she usually did in the morning.

"Oh, why the early bird today dear?" His mom, Sawada Nana, gestured with a smile. She then noticed that Tsuna was rather panicked, all the while clutching a small yellow paper with his right hand.

"Mom… do you… know about… dad?" Tsuna huffed. The trip down the stairs was not a very easy feat, especially when you're the renowned No good Tsuna, a boy with simply below-average capabilities.

After finally gaining his breath back, Tsuna told his mom "He's gone on vacation."

You might be wondering right now, so what if his dad goes on vacation? Well, Tsuna, after all, is not a normal teenager. And his dad happens to be the 10th prince to the imperial Vongolian throne. Amidst the fact that they are royalty, the Sawada's enjoy a rather common life in a normal household. His father is the last prince in line to the throne, meaning he only had a paper-thin chance for succession, thus he never really bothered with the imperial politics. And the same goes for Tsuna and his mom. Though that may be the case, a few days ago an imperial letter came, officially delivered by the palace's messenger. And there, it stated in big bold almost menacing letters that the 10th prince MUST go to the palace at 10 o'clock in the morning, which happens to be 4 hours from now. Tsuna didn't even want to imagine what would happen if they won't comply to the 'request'.

Fidgeting a bit, he stared at his mom as if searching for an answer. Sawada Nana, again with a complacent smile on her face, merely giggled saying "Why yes dear, he's been going at it for days, saying that he wanted to go and find his calling…"

'Mom, that's not the point here!' Tsuna thought before finally landing the bomb about the 'letter'. "Mom, do you remember that dad has to go to the imperial palace today?"

"Oh yes! Hmm, maybe your father forgot? Oh well, Tsu-kun, you can go on his stead, can't you?" His mom blatantly replied.

'No! I can't go! And it's obvious that dad's escaping from it!!' Tsuna's danger meters were flipping. His meters were more out of control now than they were 5 years ago when he bumped into his disturbed pyromaniac relative who was strangely fascinated with fire spewing guns. With the sudden surge of terror from his very horrible and rather scarring childhood memory, he decided that he definitely, absolutely and certainly will not go. Or at least, that's what he thought…

Only 20 minutes before 10am, Tsuna could be found nervously pacing around the bright marble-tiled hallways of the main imperial palace of the Vongola Empire. Clad in sleek white suit, Tsuna looked almost regal except that he was sweating… profusely. 'What am I gonna do?' was repeating itself over and over in his head. 20 minutes to go before he dies.

A few minutes of Tsuna's excessive tense pacing went by when suddenly he was greeted with a familiar tingling. His danger meters were acting up again. 'Damn my hyper intuition…' He thought as he stopped moving to look at the surroundings. Unfortunately though, what he found behind him was not the refreshing scenery of safety, but there stood the very presence of danger itself.

"Hey, trash!" The familiar figure said. Tsuna gulped. He had hoped not to meet the initiator of his minor childhood trauma. Wracking his brain for escape routes, he finally singled out 3 options: 1) Forward Attack 2) Hold and Defend 3) Turn and Escape. Tsuna opted for the second option, after all, even if he called for help (1st option) or if he ran away, he was sure that he was still going to be burnt to a crisp. Thus, holding his place and trying his best to smile, Tsuna replied "H-hi, Xanxus…"

"Hiee!" Too bad for Tsuna, option number 2 didn't work as well as he thought it would. Xanxus grabbed him by the collar of his previously neat black polo, slightly bringing their faces together. Tsuna cringed at the look of Xanxus' deadly gangsta glare and slightly shivered when Xanxus whispered to his ears "That should be Xanxus-sama to you, fucking dumbass."

Tsuna braced for impact. He knew he was going to get it, a very brutal, very Xanxus-like beating. Xanxus was the 4th prince; though definitely not the crown prince, he was considerably of higher rank than Tsuna's father. Xanxus' father, the former 4th prince, died a month after his birth and that's how Xanxus got the title. Shutting his eyes shut, Tsuna painfully waited for what was about to come.

'Any second now…' Tsuna frowned; he knew going to the palace, in behalf of his fairly calculating dad, was indeed going to kill him. Or at least make him suffer, excruciatingly. He thought so, yet a few seconds pass and no gut-smashing or nose-breaking could be felt. Tsuna, slightly anxious but more of scared, opened one of his eyes only to be welcomed by Xanxus' sexy neck and jaw line.

'Geh!' Tsuna mentally slapped himself for thinking THAT was sexy, which it in fact was. He noticed then that Xanxus was looking at something. Tracing his gaze, what Tsuna found was a very annoyed looking Basil. Basilicum, or Basil for short, was the 5th squad captain of the famous Vongola army. He's a very capable soldier and had quite a good relationship with Tsuna. Tsuna could pretty much remember that Basil was the kind boy who taught him a bit about the infamous dying will flames. But then, at that time, Xanxus showed up and got a little trigger happy with his dad's dying will guns. Etching his mind away from the gruesome memory, he focused on Basil as he made his way towards them. By this time, Xanxus had already released Tsuna from his grip, which made Tsuna leave a sigh of relief.

"I'm glad I was able to find you guys in time. The ninth has issued summons to his quarters. I'm here to escort you…" Basil said; a small amount of irritation can be heard in his voice. 'Hmm, maybe he had a hard time searching for us…?' Tsuna questioned himself. He looked over to Xanxus who was slightly walking ahead of their escort. He too was looking fairly annoyed. 'He must be angry since we didn't call him Xanxus-sama' Tsuna worried in vain.

Finally, they reached the quarters of the 9th Vongola emperor, Timoteo. Rather shocked at the sight of the previously healthy now bedridden ruler, they were more surprised that they were the only ones on the scene, except for the famous Arcobaleno Reborn who was sitting at a nearby couch silently drinking tea.

"Ciaossu, 4th and 10th princes." Reborn greeted. Tsuna smiled, about to greet back, but a little detail got to him. '10th prince? Dad's not here though… oh right, Reborn-san probably doesn't know about me' Tsuna opened his mouth to clarify his relationship with the true 10th prince but was interrupted by his majesty.

"As you can see, I'm not in top shape anymore. Actually, I believe I should choose the next emperor right now…" Timoteo continued "Sadly, the other princes did not fare well and the only ones remaining in line to the throne are you two…" This piqued Tsuna's interest. Their empire had never been the one to choose genders. In fact, it was a custom to have same sex partners, only having wives when it was time to have children. Tsuna never really thought about how grave the situation was, or maybe he never really cared. Assassins come from everywhere for top ranking successors, but for the Sawada's, the only assassin they got was a man whose specialty was to die. 'I'll make sure I have lots of kids in the future…' Tsuna dejectedly thought.

Tsuna didn't want his normal life to be broken. Thankfully for Tsuna, Xanxus was still alive and somewhat well. He might have some mental problems, but heck, he was next in line to the throne. Sure, utter destruction of the empire might be a little troublesome, but they can't suddenly change a century-worth of imperial rules. Besides, the real 10th prince wasn't even present.

Tsuna sighed, not anymore listening to the 9th's lengthy speech. From the corner of his eye, he spotted the great tactician Arcobaleno, Reborn, who was also one of, if not, the most trusted subordinate of the 9th. He seemed to be fumbling with something and was slowly walking their way. Finally arriving at a spot next to the 9th, Reborn held out a small black box.

Timoteo said, "Every Vongola on the throne went through the ritua- ahem, I mean the ceremony. 4th prince, take what's on the box and use it." Tsuna gulped, 'He definitely said ritual!'. Momentarily thanking the gods that he didn't have to undergo the ritual, Tsuna watched as Xanxus pulled out a ring from the little black box. In an excited, almost happy manner, Xanxus quickly put the ring on his finger.

"Aaaarrrrghhhhhhhhh~!!" Tsuna's eyes widen in horror as flames surround Xanxus. Unlike dying will flames though, it seemed that Xanxus was getting burned and that the flames were getting darker by the second. Immediately, the 9th picked up his trusty old rod from the corner of his bed and touched the end of the staff to the blazing Xanxus. "Zero point breakthrough!" And as quick as he got into flames, Xanxus was now encased in ice.

"Well, that was surprising." Reborn said as he helped his majesty regain his composure. Tsuna was just staring in shock. Finally able to speak, he said "So… does that mean Xanxus is the new emperor now?" Timoteo, still heavily breathing, shook his head, "It seems he wasn't worthy enough, the ring rejected him."

"Eh? So what now?" Tsuna thought, 'Wait, they can't possibly…'

His worst nightmares came through when Reborn said "What else? You're next in line and you'll go through the ritual." 'There, he said it, ritual!!' Tsuna's mind raced to find a solution. He didn't want to go through some unneeded scorching, especially if he wasn't even supposed to be there to begin with. 'AHA!' Tsuna found his silver lining; he wasn't the real 10th prince and now was the time to proclaim it.

"Erm, Reborn-san! Just to let you know, I'm not really the 10th prince! My dad suddenly left on vacation so I just---" Tsuna frantically explained before being put down by a harsh "Like I care about that." by Reborn. Tsuna's eyes widened. "What?" was the only stupid thing he could say before Reborn explained.

"His majesty Timoteo used up most of his power to save your little cousin over there, meaning he's in critical condition right now. We need to have a successor to the throne, and if you have even the tiniest bit of Vongola blood in you, you're qualified to take the test. Now, put on this ring before something even worse happens." Tsuna cringed. The dangerous glint in Reborn's eyes was scary enough to make him believe that something worse might happen, especially to his own body, if he doesn't comply. Thinking that he wouldn't be picked anyway, being the No good Tsuna that he was, he put on the ring.

"Uwaa!" Tsuna closed his eyes shut. 'Crap! I forgot about getting barbecued if I fail!' Anticipating pain once again, Tsuna half-opened his eyes. Nothing seems to have happened. Panicked, he looked over his body, yet no flames could be found; putting on the ring had no reaction at all. He sighed in relief, but then noticed the looks of everyone in the room, except maybe for horrible pained expression of the still frozen Xanxus. They were both grinning, their eyes shining, staring at him as if his forehead had 'DAME' written in big bold letters. Then it occurred to him, their eyes really were shining.

Tsuna's hyper intuition kicked in. 'It can't be…' Tsuna thought as he frantically searched the room for a reflective surface. Picking up a tea spoon from Reborn's drink earlier, he viewed his reflection on its metal surface.

"Oh god…" The teaspoon couldn't display his features well. All that could be seen, on the expensive metallic utensil, was a very clear orange color. Almost like, as if, a fire was burning on his forehead.

"Reborn, it seems like we have our new emperor." The 9th said, a grin still plastered on his face. Tsuna just gaped at them. 'I-Impossible!' was ringing over and over in his head.

"Don't worry, you're going to be fine, 10th Vongola." Reborn said as he fumbled with his hat. "After all, I'm going to be your tutor… home tutor to be exact."

Tsuna stared at the floor, putting his hand in his pocket he took out the memorable yellow post-it he encountered earlier and crumpled it in his hands. Oh, his father is definitely in a lot of trouble.

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To be continued…

A/N: Ack, so how was the first chapter? REVIEW! Oh, and please don't flame *heart* The pairing is definitely Guardiansx27! And probably a little othersx27 too!