Title: The Arcobaleno's Sky

Summary: Tsuna is a person who works 'behind the scenes'. He is a shadow that helps those who need assistance. He was never one to take the spotlight of anything, and yet, he was called to the the meeting of the strongest 7.

Disclaimers: I do not own Katekyo Hitman Reborn.

The room was dimly lit with sunlight that poured in through the window on the far side of the room. Shadows of trees slowly swayed back and forward to match the moving trees outside. To the right of the window was a bed with white covers and pillows. To the left of the window was a neatly organized desk, and at the desk sat a person—a teenage boy. He had brown gravity defying hair, and bangs that fell over and beside his face. His chocolate colored eyes scanned the letter he held in his hands.

Dear Yoshi,

In a few days, we will be leading an attack on an offending famiglia. As we have before, we would like to ask you for your assistance. If you are interested in our offer, please reply to this letter. We will mail you the details later.

—Nono

Sawada Tsunayoshi set down the now neatly folded up parchment onto the desk. A small smirk made its way onto his lips. The way Nono had phrased the last two sentences had told him that Nono was confident that he would help him. It was true though. Tsuna had helped the Vongola multiple times, so getting a request letter from Nono wasn't any surprise to him. Actually, getting a request letter from anyone was no surprise to him. It all just came down to which requests he wanted to take, and which requests he didn't want to take.

When it came to Nono's requests, Tsuna almost always took them. Most of the old man's requests were asking for his assistance for invading a mafia family that terrorized weak families or innocent citizens. It was pretty Ironic seeing as the Vongola was one of the strongest mafia families with one of the bloodiest histories.

Tsuna shrugged as he pulled out a paper and pen to write out his reply. Though it was an inconvenient way to keep in contact with his clients, it was safer if he didn't want to be discovered. Right now, most people who asked for his assistance must think he was an adult. What would they think if they found out 'Yoshi' was actually a 14-year-old brat.

Tsuna laughed at the thought as he wrote down his reply:

Dear Nono,

I accept your request. Please drop off the information at the usual meeting spot.

—Yoshi

Tsuna liked to keep his letters plain and simple so his clients couldn't get any personal information about him from it. It had happened once before, and his clients at the time were able to track him down, but he was somehow able to fool them because of his age.

Folding up his letter and tucking it into a plain white envelope, Tsuna stood up and began preparing to drop off his letter at the post office. He grabbed a white jacket with orange sleeves and wore it, though he left it unzipped, then exited his apartment room and headed off towards the post office.

Tsuna arrived at the post office 15 minutes later, and was glad to get out of the sun. At this time, the post office was filled with people who wanted to drop off delivery before heading home. It was very convenient for Tsuna because he could slip into the crowds of people and drop off the letter without being seen. Although, this time it was different.

As Tsuna was quickly slipping through the crowd and heading towards the drop off box, he felt someone watching him. When he turned around to check who was watching him and he managed to see an adult wearing a fedora turn away from him. He observed the person until the fedora wearing man disappeared into the crowd.

Tsuna sighed and shook his head before dropping off the letter and hastily making his way back home.

Tsuna sat at the top of a roof, fiddling with the black cloak he wore as he watched Nono gather his men below. The old man's request this time was to assist them in breaking into the opposing family's base. All Tsuna had to do was deactivate their security so Nono could break in without setting anything off.

Tsuna decided that it was a good time to finish his job while Nono was giving instructions to his people. He hopped to his feet and snapped his fingers. Purple flames burst into life right beside Tsuna, and a winged lion with an orange fiery mane appeared. Tsuna snapped his fingers again and covered himself and the lion with mist fames to no one could see him.

Tsuna pulled the hood of the cloak over his head and jumped onto the lion and said to his winged feline, "Let's go."

The lion lifted his head as if giving a silent roar, and took of flying into the sky. Below, Nono's men received a large gust of wind that knocked over anyone who wasn't prepared.

The lion quickly made it's way towards the mansion while Tsuna observed the scenery until he spotted what he was looking for. A lit up mansion stood proudly in the middle of a small forest that prevented most people from seeing the structure. Tsuna smirked and steered the lion in the direction of the mansion, and when he got close enough, jumped off the lion. The lion gave out a low growl before combusting into purple flames and disappearing.

Tsuna landed on the rooftop as quietly as possible, using his sky flames to break most of the fall. As soon as he landed, he looked around the roof to see if there was a premade entrance like a chimney already made for him to use. He pouted when he didn't find any. What kind of mansion was it if it didn't have a chimney anyways?

"Hmmmm," Tsuna hummed as he walked around the roof looking for a place to make an entrance. If he remembered correctly, he saw a library while approaching the mansion with no lights on compared to the rest of the brightly lit mansion. He shrugged and walked over the where he spotted it and peered through the window from the roof. No one.

Tsuna smiled as he hopped down and landed on one of the decorations attached to the wall. He looked at the window right beside him and held out his hand to touch the surface. As soon as he did, he activated his sky flames and melted the glass enough for him to fit. What would it matter if he destroyed one window anyways? The Vongola was probably going to destroy the whole thing either way.

Tsuna hopped through the window and into the library where he came face to face with one of the family's guards. Said guard was surprised when a cloaked person suddenly jumped in front of him after his boss sent him to the library to pick up a book.

The guard quickly reached for his gun and pointed it at Tsuna. "Who are you!?"

Tsuna smiled back at him as if the guard wasn't pointing a gun at him. "Nice day today isn't it?"

"W-What?" The guard stammered while taking a step back in surprise. What a useless guard, Tsuna mused. He must be new.

"I said—" Tsuna disappeared then reappeared right behind the guard. "—Nice day isn't it."

Before the guard could respond Tsuna quickly knocked him out. The guard dropped to the floor, and Tsuna moved him to the side.

"Well then," Tsuna said while turning his gaze to the air vent above him. "I better finish this off quickly."

Tsuna watched from the distance as the one-sided battle continued. After he finished his work, he decided to hightail it since he didn't have anything else to do. Besides, he knew the Vongola was fully capable of taking care of themselves. They weren't winning for nothing after all. Tsuna smiled as he summoned his feline familiar once again. He scratched it behind the ear affectionately before jumping back onto it. This time, his destination was set to home. With no one around, the lion let out a roar before taking off into the air. After a few minutes of flying, he finally arrived back at his apartment, and once again jumped off his lion and landed on the roof of his apartment complex. He entered into the building and walked over to his room.

Tsuna reached to open the door, but stopped as soon as his hand was on the doorknob. Tsuna narrowed his eyes. He could feel someone's presence in the room. Tsuna unlocked the door and prepared himself to attack whoever was in his room, friend or foe. Well, he didn't really have any friends so, foe.

Tsuna turned the handle and swung the door open. He hastily covered his hands with sky flames and sped towards the sitting figure in his room until a wave of flames sent him flying backwards.

"Guh!" Tsuna managed to land on his feet in a kneeling position, and he quickly relit the flames on his hands as he began evaluating the person in front of him. He was a big bulky man who wore a golden and silver hat with a checkered pattern that faded as is stretched over to the right. His eyes were covered by a golden childish looking mask that matched with his blond wavy hair. He wore a silver coat and white pants along with white shoes that also had a checkered pattern at its tips. On his hands were gloves that were checkered on the top but black on the bottom. Below his coat was a red dress shirt and a checkered tie, and he held an expensive looking cane that was decorated at the top with white gems. In Tsuna's opinion, he looked silly, but what the mysterious man did earlier told him he was strong and… Dangerous.

"Who are you?" Tsuna asked cautiously.

The man evaluated Tsuna before giving him his reply, "Interesting. To be able to sense my presence at such a young age."

Tsuna increased the flames on his hands. "I asked who are you? Did someone send you?"

"Oh no," The man said. "Don't worry, it's just me."

"What business do you have, breaking into my home?"

"Down to business, eh?" He said casually while flicking something into the air with his thumb. "I am merely here to gather the world's strongest. Il prescelti sette."

"Il prescelti sette?" Tsuna echoed as the man caught the object he flicked up. A pacifier? Tsuna thought.

"That's correct. Treat it as a job request if you will."

"A job request?" Tsuna asked with interest. The man smiled knowing he now had Tsuna's attention.

"What kind?" Tsuna continued. "If you said the selected seven, does that mean I'm going to be working with a team of people?"

"Correct."

"And the payment?"

"It will be considerable." Tsuna raised a brow at this.

"You know," Tsuna said. "Considerable is very broad. Care to give me something more specific?"

"Perhaps it isn't," The man said. "Don't worry, you will find out eventually. However, I would like you to all gather first." The man showed Tsuna a piece of paper that looked a lot like a treasure map. X even marked the spot. "Go here, and you'll be able to meet up with your companions." The man held out the paper for Tsuna to receive. Tsuna, however, didn't trust the man and decided to stay where he was and instead eyeing the stranger. The man sighed and put the note on the desk. "I can see you don't trust me. I understand. I'll just leave the note here, okay?"

Tsuna nodded slowly and the man stood up. "Well then, it was nice meeting you, Sawada Tsunayoshi. Ciao."

The man left through the open door, shutting it in the process. Tsuna stayed still until he was sure the man's presence was gone. When he was clear, he deactivated his flames and collapsed onto the floor trembling slightly. He had never met a person as dangerous as that man.

Tsuna stayed on the floor until he finally found the energy to move, and he stood up and slowly walked over to the desk where he picked up the piece of paper the man had left. He hadn't been to the location before, but he knew the general area of where to find it.

Something told Tsuna that he shouldn't go, but he felt curious. Well, you know what they say, curiosity killed the cat…

Tsuna passed by a number of shops as he strolled through the city. He kept watching for street signs to tell him where to go. Finally, he arrived in a small alleyway where he walked towards a certain door. Tsuna stood in front of the wooden door and he cautiously opened the door. Inside, six heads turned to look at him as he entered the room. The six people all sat around a table with fancy, expensive looking chairs.

He recognized these people. They were, Lal Mirch, an instructor and the special forces' ace, Fon, the martial arts master, Skull, the invincible stuntman, Verde, the mad scientist, Mammon, the genjutsu controlling esper, and Reborn, the strongest assassin and hitman. They were all famous people who were well known in the Mafia, all very strong in their own way.

Tsuna narrowed his eyes. That man really wasn't lying when he said that he was gathering the strongest. These people were the top of the top, and in Tsuna's opinion, he felt like the odd one in the group. He technically wasn't well known by people since he always his behind his alias 'Yoshi'. And he wasn't very strong either since he lacked experience everyone who has gathered had. Still, he felt honored to meet all of them on one group.

Five of the six people seemed shocked to see a teenager like him walk into the room. The only one who didn't seem surprised was Reborn who had a strange glint in his eyes.

"Chaos, we've been waiting for you," Reborn greeted him as if he were the boss. He looked at all the other people on the room before stopping at Tsuna. "With this, we have seven."

Okay, I'm not sure exactly what was going through my mine when I wrote this, but... Inspiration struck?

I didn't have this go through too much editing. I just edited it once and passed it off as ok, so if there are mistakes, forgive me.

Also, yes, Tsuna can use mist flames! I never see this often in fan fiction, so I decided, 'why not?' And the lion he summons is an illusion, and yes it is Natsu. Think of it as Mukuro's third path, the realm of beasts.

Checkerface's appearance might not be correct since I didn't know what colors his clothes or hair was. I just based it off a few things I found online. -.-'

Ciao Ciao!