Summary:Tsuna didn't really know how it happened. One moment he was walking down the street and the next he ended up in a very dark room with people not really looking very happy to see him. Moreover, what caused Tsuna to panic at this was the sight of the first generation of Vongola along with an adult looking Reborn. Apparently Tsuna was quite infamous in this parallel world...

A/N: Fixed some grammar fails + updated the chapter a little. It's hopefully more readable now and got some small extra stuff in it as well.

Chapter 1 – Switched with your Parallel

Reborn cursed under his breath.

Only a little further ahead ran his target at an incredible speed and he was sure to let his bullet go right through his skull the moment he would catch up with him if his annoyance decided to grow even more than it already had. The brunet in front of him just wouldn't stop with his small irritating chuckles every time Reborn got the small sights of him through every turn he made down the hallways. It irritated him to no end of that supposed to be most wanted information breaker through the mafia history. Considering the target was famous of slip through anyone's grasp, even his. Though this wasn't the first encounter with the man, Reborn had never had a mission yet to actually catch him. The previous encounters had always started and ended with small glances, and with that man always giving an eerie smile on his face before vanishing, giving away a hint of 'catch me if you can' in it.

Left turn, right turn, left turn again. The brunet just wouldn't let himself be slowed down by anything. Reborn couldn't help but feel his finger twitch to the trigger every time he managed to see the brunet's amused look when he decided to give a small look back towards Reborn.

The reason why he hadn't blown the chuckling man's head off yet was due to the request of the Vongola boss to catch him alive if possible.

Reborn knew better. As he'd let himself be caught alive anyways, Reborn murmured in his thoughts and picked up his pace which got the brunet to make a quick turn to a new corridor while shooting back another one of his annoying smirks towards Reborn. The Brunet threw himself towards a door at the end of the small corridor and ran down an old staircase behind which led down to a very dark part of the big facility.

Reborn shot off a bullet towards the brunet's head which grazed the man's hair swiftly and cut off some locks and ran quickly after. But he lost sight of the brunet down the stairs for a few seconds before reaching the end of the stairs and stopped.

Scanning the room he now was in. Reborn noticed the room was very old in contrast with the rest of the facility. It was a rectangular room. A few old machines that looked like they hadn't been used for a very long time were standing innocently along the walls collecting an infinite amount of dust. The floor had several cracks in it and the dusty old lamps gave a slight dim light just enough to see the room's belongings somewhat clearly. It was one of the old wicked Talbot's deserted laboratories as Reborn could confirm.

At the other side of the room a brunet in black well-used jacket, a grey undershirt along with a pair of grey pants were leaning against a machine that surprisingly looked a lot newer and cleaner compared to the impression the room in general gave its visitors. The brunet in his mid-twenties was playfully drumming on the machine with his fingers while giving Reborn an amused look. The caramel-brown eyes were gleaming in delight and the man's fluffy brown gravity-defying hair which pointed in all directions was swaying at the small chuckles the man gave out while looking back at the fuming man in his black suit and fedora armed with a green gun pointed straight at the brunet's forehead, not scared of the death threat he was facing at all.

"Wow, I didn't think that I'd have the pleasure to bump into you on my way here, Reborn." The brunet chuckled awfully too cheerful for Reborn's tastes.

"Then you're lacking of prediction skills Ombra." Reborn replied coldly.

"Oh?" The brunet raised an eyebrow but kept his amused expression. "Am I lacking at dodging your bullets as well? Or are just not into killing me today?" A small laugh erupted from the brunette.

"The reason why I haven't killed you yet is due to orders Ombra."

The brunet called Ombra sighed while letting his head fall down so he could look at the now very interesting floor instead.

"That sounds rather boring to me." Ombra replied lazily and looked up towards Reborn again. "Besides, you know you can call me Tsunayoshi. I really don't mind at least someone calling me that instead of that old nickname."

Reborn eyed the brunet. "Dame-Ombra. I can't say I respect you enough to call you by your real name since your nickname is more fitting." He tilted the gun down, now pointing at the brunet's heart. "You are to turn yourself in now to the Vongola or I can't say your fate will end well."

"My… fate?" Ombra replied confused. The brunet put up his hand over the mouth to resist laughing out loud at the thought. "Don't get me wrong Reborn. But since when did Vongola have any power to decide my fate?"

"Same way as they hired me to either take you to them alive or kill you on the spot Dame-Ombra."

Ombra gave up a snort. "So if I refuse I die huh? That sounds rather rash Reborn."

The green gun clicked and the brunet tensed at the sound and looked straight into the barrel of the shape shifting gun. Then he gave up a new eerie chuckle.

"Reborn. Do you know what this machine does?"

"…" Reborn gave the machine that the brunet was leaning on a small glance before returning his attention to the man again.

"It's one of Talbot's inventions. And I'm holding on to the power switch right as we speak. The moment you try to pull the trigger or try moving to get me away from this machine…" Ombra's voice quieted down and he smirked, letting his head lean slightly forward. "…I'm not sure what will happen to this facility along with me, you and the Vongola boss who I know is inside looking for both of us."

Reborn glared at the brunet. Was he bluffing? It was hard to tell. Even though he knew Tsunayoshi Ombra was an expert at misleading people, he also knew this was in fact one of Talbot's many research labs, this one being one of his older labs. And by knowing Talbot's mess-ups in the past with his older machines it was a risk that it would blow up the second he turned the power on, and also adding the fact of the Vongola boss along with his guardians were indeed inside the building…

"Lost in thought Reborn?"

Reborn could do without the teasing from the brunet. It only made him more eager to blow off the head off the man.

"You think you have me in checkmate Dame-Ombra?"

"Not at all~" The brunet hummed and gave a broad smile. "You are the number one hitman for a reason right? Besides I think we got company."

Shouts came from the staircase behind Reborn. And soon seven people appeared at the end of the staircase. The leader, who had sky blue eyes with spiky blonde gravity defying hair, wore a black suit with white pinstripes and a white undershirt with a black tie. On his shoulders he wore a cloak with a few golden chains keeping it in place gave the brunet a calm calculating gaze when arriving a few meters behind Reborn. Behind him ran his well-known guardians who placed themselves along the walls to prevent any weird movements from the brunet at the other side of the room.

"Tsunayoshi Ombra." The leader stated calmly.

"Ah, Giotto Vongola." Ombra answered cheerfully, waving the hand he didn't hold on the power switch of Talbot's machine. "What brings you here?"

"Why you…" The redheaded storm guardian with a flaming tattoo at face's right side, whom stood closest to the man now known as Giotto snarled at the brunet. Giotto held up a hand to silence him.

"Dame-Ombra…" The brunet let his eyes land on Reborn. "Final warning. Give up now or face the consequences." Reborn's voice hinted to a dangerous edge in it.

"I can assure you no harm will be made to you if you give up now Tsunayoshi." Giotto said curtly. "But I can't guarantee anything if you refuse."

Tsunayoshi Ombra gave a tired smile to the group in front of him. "Then I guess I'll have to say no to both offers Giotto of Vongola. I really just need to test this machine out." The brunet gave a creepy smile and switched the power on, leaving no room for the others in the room to react in time to his comment.

A bright light filled the whole room and Reborn cursed aloud. His gun warped back to its usual form of a chameleon and cringed at the light. The Guardians along with Giotto had drawn their weapons but were blinded by the light to be able to spot the target.

Putting his arm in front of his eyes as a mean of protecting his eyes from the light, he yelled out in anger.

"OMBRA!"

Sawada Tsunayoshi woke up in a flash. His Hyper Intuition bickering a warning to the falling 1 ton hammer that were a few centimeters from letting him off with a huge headache at the beginning of the day, just as it normally did almost every day if his tutor choose to try something new. So far this was his favorite way to wake the poor teen up.

"HIEEEEEEEEEEE!" Tsuna fell out of the bed and whined. "REBORN!"

The infant hitman gave the boy a smirk. "A boss must always be ready for anything Dame-Tsuna."

"I t-told y-you. I d-don't…" Tsuna wasn't able to say anything else as the barrel of the green gun was aimed at his forehead.

"R-r-reborn!" The safety went off and Tsuna was just able to dodge the bullet that came towards him in high speed and dug itself into the wall. Tsuna gulped at what could have happened if he didn't dodge that one. Reborn seemed more impatient than usual.

"What did I say about stuttering Dame-Tsuna?" Reborn stated with a murderous aura.

"N-n-not…" Tsuna swallowed down his nervousness and took a deep breath. "Not to."

"Good. Now get up. You need to get ready for school. Or you might be late." Reborn gave a smirk, promising great consequences if the teen were to refuse.

"Yea, yea." Tsuna sighed. It was always the usual 'get up and go to school'-morning at the Sawada residence. As Tsuna later went towards Nanimori Middle School his Hyper Intuition started to act up again which got Tsuna to stop in his tracks.

"W-ha… huh?" Tsuna couldn't pin-point any specific reason why his Hyper Intuition acted like this. It was not the normal "you're in danger" warning. But something else, like something strange was about to happen. Tsuna tried to shrug the feeling off and continued to go to school.

But as he went through the school day the Hyper Intuition just wouldn't stop bugging him. It kept him from focusing at the teachers and when his friends wondered if he was okay he hardly paid attention either due to the nagging feeling that went off constantly.

"Tenth…?" Hayato looked worriedly at his boss who seemed to be troubled with something. "Is something wrong?"

"Yea Tsuna, you've been a little off today" Takeshi put a hand on Tsuna's shoulder which Tsuna flinched to when feeling the hand.

"Huh?… What…? Oh… I don't know." Tsuna scratched his cheek in deep thought. "My Hyper Intuition is kinda bugging me, but I can't say what's going to happen…"

Hayato and Takeshi exchanged looks, a bit of worry surfaced in them as they let their eyes go back to their nervous wreck of a boss. Tsuna suddenly felt an all too familiar extra weight on his head.

"Dame-Tsuna, you sure your Hyper Intuition is acting up?" Tsuna looked up at Reborn with a confused look. Looking back and forth in the classroom to see is anyone was listening in on them. He found no trace of anyone even giving Reborn a glance of being there with them. The brunet sighed and looked up at his tutor to answer the question. "Y-yea… I think so. But it's a little weird. Just as it tries to tell me something strange is going to happen."

"Well then we'll need to be on our guard." Reborn replied with a small frown.

"O-okay…"

Tsuna clutched his head in irritation. Why wouldn't the Hyper Intuition quit making these weird bugging feelings stop? It was hard enough with Reborn trying to bang in all of the math problems into Tsuna's head with explosive bombs all over the room if he got one wrong. And it didn't help that it was nearly impossible to even listen to Reborn's comments with the acting in his head.

"Take a break Dame-Tsuna." Reborn curtly said and went downstairs to get a cup of his favorite espresso. Tsuna went downstairs as well and got greeted by Nana.

"A Tsu-kun, could you go down to the store and buy some milk and a few grape candies for Lambo? We ran out and he's really eager to get some more." Nana said with a cheerful soothing voice.

Tsuna nodded. A bit of air couldn't hurt after all the explosive torture upstairs, not to mention him being a nervous wreck and it would do him good to take it a bit easy for once and just to "normal" stuff instead of this Mafia training Reborn always had to get him into.

He put on his shoes and went outside walking in a slow pace. It was near evening and no one else seemed to be outside as for the moment. But the store should still be open a little bit longer to buy some milk and grape candies.

He walked down the silent street and hummed softly on some random tunes to ease up the aching. At first it seemed to work, only small naggings back that made him almost trip over air again but regained his footing before an embarrassing accident like that could happen.

Then his Hyper Intuition flared up like a supernova which made the brunet jump back in shock, a white light appeared around the brunette in a flash. Tsuna didn't have time to give a sound until he felt himself falling in a nonexistent abyss for a few seconds a checkered pattern was faintly seen at the sides, causing small chain-like ropes swirling around him. Just as he started to try to look around him he landed with a thud in a dusty dark place.

In the middle of it all a large shout echoed in the area.

"OMBRA!"

Tsuna gave up a flinch, and started to cough due to sudden dust around him making its way into his lungs. A group of people was shown in silhouettes a few meters in front of him. He couldn't see who the people were but they closed their distance to him fast.

Two pairs of strong hands grabbed him harshly around the arms and dragged him away towards a wall where they let him go.

"H-H-HIEEEEEEE!" Tsuna cried and the movements of the people stopped for a moment. Then an all too familiar green gun was aimed at his forehead.

"Game over, Ombra." A cold voice snapped. Tsuna winced at the statement along with the murderous aura the man was letting out. The first thought that hit him was who was this Ombra?

"Wh-wha?" Tsuna tried to speak but the dust made him cough even more and he started to hyperventilate. This was bad enough as panic seemed to want to make an entrance.

"Reborn wait." A somewhat familiar voice echoed. Tsuna could almost remember who it was but somehow it all was in a blur. Wait… The voice said Reborn. Was Reborn here? The questions whirled around Tsuna's head and he looked towards the person that the voice emitted from.

What he now saw made his heart stop.

The first generation of Vongola was standing right in front of him with gazes that bore into his soul along with an adult-looking Reborn. Tsuna could feel his head spin in panic.

"Tsunayoshi Ombra. What did you do?" Vongola Primo said sharply and stared right at Tsuna.

"P-p-p-primo?" Tsuna clutched his head of a massive headache he got from his Intuition and collapsed on the dusty floor, letting the darkness take him away.