The Kind of Switch

Written by: Nanamicchii

Beta-ed by: Yuuki-chan24

Prologue

It was just a normal peaceful day, a normal day where the Vongola Decimo was just scheduled to seat in his office all day long, specifically to read and sign the loathed paper works that his guardians most likely caused. He then sighed exasperatedly after seeing the newly arrived paper works that he predicted would be about 30 inches thick brought by his most ever loyal storm guardian. "Juudaime, here is the newly arrived papers from Lambo's mission," Gokudera said hesitantly. Hesitant because he already knew that his Juudaime will surely inquire about the reason it became so thick for just one particular mission.

The Vongola Decimo creased his brows suddenly irked of what he heard, "From Lambo's mission alone?" To Gokudera's horror, this was immediately followed by a frightening smile. The storm gulped down knowing that he was surely in trouble, "And how the heck did that happen? Those papers looked 30 inches thick." Tsuna said in his stern yet calm voice.

"The stupid cow bombed the whole place into dust…" the storm trailed biting his lip because of the headache the lightning guardian had given to his Juudaime.

The boss sighed exasperatedly at the same time face palming at the said event. "And?" Tsuna said waiting for Gokudera to continue his report.

The storm couldn't help but release some cold sweat, "and the next building, then the other building next to that building, and the building next to that building and also the-,"

"Just tell me what exactly happened in one concise sentence that completely describes everything." Tsuna demanded.

"The five-year old Lambo suddenly appeared in the middle of the fifteen-year old Lambo's mission and for an instant, he panicked from the strange place causing him to throw all the bombs he possessed around the place instinctively." Tsuna mentally sweat dropped on that. He looked behind his storm, knowing that his lightning is silently listening behind the door of his office.

He then sighed, this time not because he was annoyed. Instead, he decided to just let it go. Tsuna really has a soft side when it comes to his lightning guardian. The poor kid was forced to be a guardian and fight with them at such a young age so he couldn't get himself to be angry at the said kid. "Tell Lambo that I'm not angry but," he paused, "he'll go to school in exchange of this."

"B-but Tsuna-nii!" Lambo barged inside the office protesting the punishment that has been thrown at him.

"Stupid cow, don't you know how to knock?" Gokudera scolded and was about to punch the lightning guardian in the head.

"It's okay Hayato, and that's final Lambo." Tsuna immediately looked at the boy. "Or if you don't want to, maybe I should let Reborn personally give you your punishment." he plastered a smile similar to Byakuran's. "I'm sure you wouldn't want that."

The cow had no other choice so with a heavy heart, he agreed on the punishment to go to school. Tsuna smiled as the storm exited with the lines to call him if he needed something while the lightning left with tears and snot in his nose flowing all over his face.

As he was already alone and was sure that his guardians are in some quite far distance, the Decimo immediately narrowed his eyes to one of the corners of his office, "What's your business here Byakuran?"

"As expected from Tsu-chan," an albino appeared at the said corner wearing his usual grin. He walked closer to the Vongola Decimo's desk full of documents, "You're quite busy huh." He commented glancing at the still to-be-signed papers.

"I know you're not here just to check if I'm busy or not." Tsuna said knowingly, "So what is it that you've come for?"

Byakuran laughed, "How sharp of you Tsu-chan." He brightly applauded and stared for a minute at the Vongola boss with his grin. "Well…" he continued, "I'm here to ask for your permission if I could switch your soul with one of your parallel counterparts."

"Huh?" Tsuna blinked in confusion, "What do you mean?"

"I can't really explain it properly, but here goes." Byakuran took a deep breath. "The tri-ni-sette is starting to get imbalanced because of the parallel Tsu-chan, this counterpart of yours doesn't have what you naturally have, Tsu-chan. Do not misunderstand. Parallel Tsu-chan is a prodigy in everything he does and is still a candidate for the Vongola Decimo throne. It's just he doesn't have the kindness in him but instead, he has hatred which is the cause for this current mess. Your parallel guardians hate your counterpart and more importantly, they don't want to be your parallel self's guardians… I don't know what to do anymore but I can take you to this parallel world for you to see for yourself. However, you need to decide right away if you agree or not since you already know how it literally drains me to travel to a parallel world."

"Wait, what does this have to do with switching my soul with my parallel self? And what about your counterpart? Shouldn't he be in charge of this? He should warn my counterpart about this problem." Tsuna questioned but then felt bothered as he saw Byakuran's expression turned grim.

"My counterpart is dead and the cause was the parallel Tsu-chan…." He paused when he saw Tsuna was shaken by the news but then he plastered a bright grin. "And that makes you in charge." Byakuran announced. Tsuna couldn't help but mentally shriek as he gaped at the cheerful albino. It was a shock at the same time Tsuna felt weird at the revelation. He opened his mouth to asked when the said albino lifted his hand with his mare ring on it and snapped his fingers after he chirped a "So~," in just one snap, Tsuna and Byakuran were already in Namimori, Japan – rather the parallel Namimori. "We're already here, Tsu-chan." He said shifting his sight to the brunette only to find a glaring one. "W-what's wrong Tsu-chan?" he asked innocently.

"I didn't tell you that I want to come here," Tsuna said in his authoritarian voice. Byakuran was about to reason out when Tsuna sighed and spoke again. It was a question this time. "So why are we in front of the Namimori Hotel? It really bugs me." He said scanning his surroundings.

"Your hyper intuition is really amazing to this extent." Byakuran commended in surprise, "Anyway, your counterpart is going here tonight to assassinate the Chiavarone Decimo," the albino simply answered. Tsuna widened his eyes immediately shifting his sight back to the albino.

"Isn't that Dino-san?" Tsuna said waiting for the albino to confirm his thoughts since they were at the parallel world. There might be some slight changes.

"Yes it's him, who else would you think he should be?" Byakuran ironically replied taking out one bag of marshmallows. "And look, he's already here." He pointed a certain teenage kid wearing black pants, black hooded jacket, and gloves covering his arms. The kid easily sneaked inside the hotel. Even the Decimo was surprised to see his counterpart doing such impressive stunts without fail. His tutor must be proud of him if he was that good but then the assassination plan suddenly hit him.

"Aren't we going to stop him?" Tsuna panicked, "You said he's still a candidate, so why is he going to kill Dino-san? And where is Reborn?" He doesn't know but his intuition is freaking bugging him, everything isn't right and something about danger to some body was what his head keeps screaming.

"Tsu-chan, that's for you to answer," Byakuran said munching lots of marshmallows, "if you decide to agree switching your body for the time being, then this assassination will be stop. I can only watch. Interference is something I will not do since it'll cause destruction to this parallel world like what I did when I tried taking over our world."

"What will happen to my original body then?" Tsuna asked, trying to gather enough information that will make sure that his world and family won't be harmed.

"Your parallel self will take over it," the albino simply answered.

"What?" Tsuna exclaimed.

"Don't worry Tsu-chan, he can't freely use your powers since you'll be taking it with you here and this world still hasn't discovered box weapons, plus I'll keep an eye on him and hopefully he will have a change of heart to something more pleasant like yours after he experiences a life like yours Tsu-chan because this counterpart has only encountered a thorough betrayal, abandonment and anything that would cause pain, so it's natural that he would only know how to harm people. He had even become a sadist mentally and physically. It's like he's just going to go through a medical treatment." Byakuran explained stopping from his munch. "So what's your decision?"

Tsuna stared at him thinking about what's the best thing he could do. Should he agree or should he not? As he was thinking, an explosion occurred on top of the building causing both of them to turn their attention towards it. The assassination is being executed. The Decimo sighed and turned his sight to the albino, "Make sure that no one among my family and friends will get hurt because of my counterpart, Byakuran." He said narrowing his eyes.

The albino beamed upon hearing his warning as he executed a nod, "Okay Tsu-chan, now close your eyes." Tsuna took a deep breath before he did what he asked. As he did, "By the way, your counterpart is still a thirteen year old here." He said then snapped his fingers.

PARALLEL TSUNA'S SIDE

"Shit!" Tsuna, who was in the middle of assassinating the bucking horse Dino, cursed as he felt the stinging sensation of his now bare skin in his left arm. He was caught off guard when he entered the room where the Chiavarone boss resided. The said boss was actually waiting for him and had already been ready to fight. He was currently on his way to escape for his dear life, not that he cares about being alive but for his identity. He didn't want to be discovered, not yet.

He climbed the stairs up to the rooftop until he finally reached it. He wanted to swear. How did the Chiavarone boss predict his actions? The rooftop was already filled with the subordinates of the bucking horse. 'What should I do? Don't panic… think Tsuna! Think!' He tried to calm down and thought of escaping through the stairs but sadly he couldn't do it since Dino was blocking the way. 'Shit! Is this really my end already?' He was starting to panic. This didn't happen before. His plans always go the way he wanted it. 'No Tsuna, you can't panic now, Relax… Relax… '"Relax." He closed his eyes and gasped some more air. "Now how am I going to escape this situation?" Tsuna slowly opened his eyes expecting a blond and some guys in their black suits. However, he didn't expect a familiar albino in front of him wearing a Cheshire grin.

"Hello Tsu-chan!" the albino greeted. "I saved you just in time…" He instantly paused, shaking his head childishly, "No, he did."

"B-Byakuran?!" Tsuna snapped aloud, "Y-you're alive!" he lined his brows in confusion, "B-but I thought you're dead…" he trailed off.

"Well of course! After all, you killed…" Byakuran can't hold it anymore, he laughed as if the brunet had just stated a joke. He immediately cleared his throat to gain control and glanced at the confused still-candidate-Vongola-Decimo-counterpart. "You killed me." He shook his head as he notice something not quite right at the statement. "I mean the other me," Byakuran chuckled a little but manage to stop and plastered a Cheshire grin once again, "anyway, enjoy the dreams Vongola Decimo~," he sang fading away with a wave.

"W-wait, what do you mean?!" Tsuna tried to reach the fading albino when he realized that he was seating in a familiar luxurious seat along with a huge desk in front of him with lots of papers placed in it. "I-isn't this the office of the Vongola Boss?" He pondered to himself slightly jolting in his seat. He was once taken by his father in the office he was in. He was still a child back then but he could still remember his father introducing him to a certain man he called Nono inside the place. The said man was seating in the very place he was currently occupying while in front of the desk was his name plate signifying that he was the vongola boss. He lined his brows on the thought and carefully scanned his sight around the place. 'So this is the office I'm going to work if I ended up inheriting the throne.' He mentally smirked on that. 'Not ba-,' he was snapped out of his thoughts when the fifteen year old lightning suddenly came in. Tsuna gape as the person ran behind him as if hiding from a certain bully. "L-Lambo?" it was a question since the cow is way too similar to the kid he knew. But if it were Lambo, then he shouldn't be getting close to him because he despised him and Tsuna didn't like kids either.

"Tsuna-nii!" Lambo shrieked. "Turf top is forcing me to train with him." He pointed at the now open door.

"Yo, Sawada!" Ryohei greeted waving his hand with a boxing glove in it. "I was just trying to train Lambo to the EXTREME!" He announced deafeningly making the brunet cringe at the loudness but thanks to the duo's conversation the parallel Tsuna has now confirmed their identity.

"No Tsuna-nii, I don't want to! You know I'm going to die if I train with him." Lambo begged as Tsuna was stunned at the present ruckus.

"Oi Turf top! Stupid cow! How dare you disturb Juudaime?! He's in the middle of his work." Gokudera instantly appeared yelling at the two. He noticed Tsuna eyeing him. He then immediately executed a 90 degree bow. "I'm sorry for letting them disturb you Juudaime. I'll immediately take care of this two idiots." He said immediately striding to Lambo's hiding place which was behind him. Gokudera plastered a genuine smile before finally dragging the two out of the office. He was again left alone and confused. Why was the three of them acting so different? Those three hated him to the extent that they didn't want to see anything related to him. 'Just what the hell is this dream about?'

Meanwhile, in the parallel world, the real Decimo was left cursing. 'What the fuck Byakuran!' He mentally exclaimed as he realized that he was surrounded by Dino and his subordinates.

End of Prologue

A/N:

Hi there! I just want to know if you like the idea though there might be some who already thought about this and made it into a story. I'll continue this if you like it. ^-^/ Ciao!

A big thanks to my beta reader Yuuki-chan24 XD

02-26-17