Disclaimer: I do not own Katekyo Hitman Reborn

A/N: I told myself I wouldn't post another Reborn story until I got farther or finished one of my other ones….but a story I was reading with Giotto and Natsu as Tsuna's brothers gave me this idea and I just had to write it. It's so much fun! Plus, instead of listening in any of my classes today at college, I wrote this. It was too much of a pain to listen to lessons today, especially in math. My professor there...is a strange one. Anyway, I learned all I am learning in Pre-Calculus in high school so I pretty much zone out in there and just write, text, or play sudoku on my phone. What a great way to spend my time.

Il Solitario Cielo

"Italian."

"Japanese."

'Thoughts.'

Chapter 1

Beep. Beep. Beep.

With a quiet and annoyed groan, a teenage boy rolled onto his side, eyes cracking open to stare at the annoying cause for his waking up: the phone on his nightstand. It was a red flip phone with a silver plus on it. This silver plus was flashing blue to alert him that he had a message.

Finding that glaring at the offending object wasn't helping and it was just hurting his eyes to see that flashing so soon after waking up, he pulled one of his hands out from under his comfy and warm pile of blankets and pillows.

He flipped the phone open as he grabbed it and opened the message. As he waited for the message to load, he snuggled back into his pillows. If his phone didn't load it faster he was going to fall back to sleep. It was–he took a glance at the clock on the nightstand–three thirty in the morning after all….three thirty?! Someone was going to die for waking him!

Just as the thought of killing crossed his mind, his phone beeped once more and the e-mail came up on his screen along with all the addresses that it was sent to. So it seemed that he wasn't the only one getting this job.

I issue a challenge to all freelance assassins that have no connections to the Vongola Famiglia. The targets are Vongola Decimo and the next boss of CEDEF. You must find them themselves but I will give you a bit of help. Attached are their pictures.

Cavaliere Don

Thud!

The phone bounced off the bed and to the floor as a picture of two blonde boys loaded on the screen. Both of them were grinning. The taller one had spiky hair that seemed to defy gravity and kind looking amber-orange eyes. His arm was swung around the smaller boy's neck from behind and the other hand was giving the peace sign. The shorter boy's hair was short and spiked up. He was grinning with mirth shining in amber-brown eyes and giving his own peace sign.

A quiet voice was all that was heard in the darkness.

"Vongola?"

*Il*Solitario*Cielo*

"We're late!" A voice screeched.

Brown eyes stared at the house with wide eyes. How long had it been since he was last here? Four years, right? Even though it was only a few years since he last saw the house it looked very different….

….Maybe it was because it looked bigger? Did they add to the house?

SLAM!

He blinked and refocused his attention on the front door where a group of boys were trailing out of it.

Though the boys froze when they saw him standing in front of the gate.

The silver haired and redhead boy looked from him to the tall blond haired boy than back to him with confusion shining in their eyes.

They boy standing in front of them had gravity defying spiky hair that was just like the blonde haired boy's except that his was brown. He also had familiar kind brown eyes that looked just like Nana Sawada's. He was dressed in black cargo pants with a red belt, a black jacket that had a red band on the right sleeve that had a white '27' in it, and a blue shirt.

"Tsuna?" The shorter blonde yelled, blinking in surprise. "TSUNA!" He propelled himself at the brown haired boy. "You're back!"

"Natsu-niichan." Tsuna whispered, pulling back from the boy's hug and giving a bright smile. "I'm home."

"Why didn't you tell us you were returning?" The taller blonde demanded once he got passed the shock of seeing his youngest brother.

"Sorry, Gio-nii. It was very sudden." Tsuna replied, grinning a bit ashamedly at his older brother.

Giotto, Natsu, and Tsuna were all siblings, sons to Iemitsu and Nana Sawada. The oldest was Giotto at eighteen years old, who was in his last year of high school. Next was Natsu, who was sixteen, almost seventeen, and he was in his second year of high school. And then there was Tsuna, who was the youngest at fifteen.

"Who are your friends?" Tsuna asked curiously, looking passed his brothers to see the four boys watching them.

Surprisingly the two black haired boys looked similar with their hair, kind eyes and smiles, and that they were both carrying shinais. The other two boys had similar hairstyles, but one had silver hair and the other had red hair. Plus, the red haired boy had a red tattoo on the right side of his face. The silver haired boy was glaring at him with steel green eyes as if he was the dangerous one.

"Are they related?" Tsuna asked.

"G. and Hayato are half-brothers and Asari and Takeshi are cousins." Natsu explained, motioning to the boys as he said their names. "Hayato and Takeshi are in my class. G. and Asari are in Giotto's."

"Nice to meet you. I am Sawada Tsunayoshi, Giotto and Natsu's little brother." Tsuna greeted with a small bow.

"It's been a while, Tsuna." Takeshi greeted with a grin and a wave. When they were kids, Takeshi and Natsu were friends. Because of that, he met Tsuna and became his friend.

"Ah, you're the one in the pictures around the house." Hayato exclaimed, while pointing a finger at him.

"Yes?"

Laughing, Natsu pushed Hayato's hand down. "Sorry, Tsuna. He is really excitable."

"Like a puppy?" Tsuna asked sarcastically.

"That is it exactly!" G. replied with a smirk.

"Shut it, pinky." Hayato snapped.

"Red! My hair is red." G. retorted.

"Are you kidding me? Your hair is clearly pink! Look at the band on his jacket then at your hair!" Hayato pointed at Tsuna, but kept glaring at his half-brother. "It is so obviously different!"

"Have you ever heard of different shades? There isn't just one shade of red!" G. snapped.

Tsuna coughed into his hand to get their attention. "Sorry to interrupt your amusing banter, but aren't you late?"

"Shit!" Natsu yelled and pushed passed Tsuna. "We'll talk later, Tsuna."

Tsuna waved at the boys as they ran passed him, hiding an amused smirk.

When they disappeared down the street, Tsuna, still smirking, picked up his bags off the ground and walked up to the door that the boys left open in their haste. He kicked it shut behind him, dropped his bags, and called, "Mom, I'm home!"

His voice had the affect he was hoping for since he called home at least twice a month when he was gone, his voice was still easily recognized so it brought the thundering footsteps to his ears.

"Tsu-kun!"

Without even realizing it, Tsuna found himself in a bone-crushing hug. Women sure were strong Tsuna decided when his mother continued to squeeze the life out of him. Just when he thought he would suffocate, a deep voice saved him.

"And who is this, mama?"

The arms around him disappeared, allowing Tsuna air and a chance to see his savior. His savior was a tall man wearing a crisp black suit and a fedora. He had black hair with curly sideburns and deep black eyes that looked like they were looking deep into your soul.

"Would you be this Reborn I am constantly hearing about?" Tsuna asked.

"Correct."

"This is Tsunayoshi, my youngest. He's been studying abroad in Italy the last four years." Nana explained, ruffling Tsuna's hair in a fond manner.

Reborn nodded and turned to Tsuna with interest. "Devi parlare bene l'italiano, allora?"

"Non sarei sopravvissuto in Italia per quattro anni se non si impara." Tsuna replied in fluent Italian.

"Are you moving back then?" Reborn asked.

Tsuna nodded. "For a while, at least. Something came up so I decided to return." He turned to his mother with a smile. "I have the transfer papers filled out. I just need your signature and I can go back to school here."

"That's great, Tsuna!" Nana smiled. "I'll take the forms, check them over, and sign them. Why don't you take your stuff to your room? We did some renovations to the house because of so many people moving in. Your room was left untouched though."

"I knew something was strange." Tsuna mumbled as he carried his stuff upstairs after handing the forms to his mother. 'And it's not just the house.' He decided as he glanced at Reborn out of the corner of his eye as he was following him.

"Do you need something?" Tsuna asked, or more like demanded.

"It's suspicious." Reborn said.

"What is?" Tsuna asked as he opened his bedroom door. To his surprise the room was clean but still had the childish air about it since he was eleven the last time he lived here. His mother must have made sure to keep it clean in case he ever returned.

"That you would return without warning." Reborn commented casually but there was an interested and suspicious look in his eyes.

Tsuna raised a brow at him before turning to his bed. "Ah, I'm going to have to redo my whole room." He mumbled.

"Not going to defend yourself?" Reborn asked.

"Why should I explain myself to a stranger?" Tsuna retorted, casting the man a frown before turning back to his suitcase which he was in the process of unzipping.

"We're family." Reborn replied after a few moments of silence.

The teenager, now in the process of going over to his dresser to put clothes in it, fell over in shock. "Huh? F-family? We're not fa–"

Tsuna froze when he found Reborn kneeling next to him with a frown. "You've been gone for four years. This family has grown with all the strangers coming to live here. We've all grown closer since you've been gone. Wouldn't that make you the stranger here?"

Hurt momentarily flashed in Tsuna's eyes before it was covered by indifference. He hasn't even been home for half an hour yet and already he's had his fear pushed into his face by a stranger. A stranger!

He didn't need it said. He knew all along that he has been gone a long time. All his calls home were not enough to keep him knowing everything that went on with his mom and brothers. They were practically strangers by this point. He was just an outsider here. Did he really belong at all?

"Why did you leave?"

The question caught Tsuna off guard so he whipped around to look at Reborn when he heard it. Even his parents didn't ask why when he told them he wanted to study abroad for a while. They were just happy to see him so eager and happy to do something for once.

"Th-that is none of your business." Tsuna shouted and pushed the man away from him. "Get out!"

"What?"

"Get out of my room!" Tsuna screamed, raising his head to reveal sharp eyes with a tint of orange in them. With strength that Reborn didn't expect the small boy to possess, Tsuna shoved the man out of the room, slammed the door shut, and locked it.

"Interesting." Reborn murmured as he left the hallway. Even he knew where and when to end his teasing and interrogation. The youngest Sawada was very insecure about his place in the family and already had all these fears at the very top of his heart and believed them. He didn't need Reborn to make it worse.

Inside the bedroom Tsuna fell to his knees and bowed his head forward so it was leaning on the door. His hands rested on the door, but were so tense that the fingers were beginning to slowly curl into fists.

That stupid Reborn! Who did he think he was? He had no right to come in here and call him an outsider! He didn't need anyone else to tell him what he already knew. It hurt so much, but to actually hear it from someone, that hurt a hundred times wore.

*Il*Solitario*Cielo*

After calming himself down and getting his mask back in place, Tsuna went downstairs and told his mother he wanted to redo his room. And that was how he ended up with his dad's credit card and going down to the stores to get whatever he wanted for his room. He would be sure to run up a huge bill for his dad. His existence would have to be acknowledged then.

But, there was still one problem he had.

"Why the hell do you keep following me around?" Tsuna snapped at Reborn, who was walking next to him.

"Just taking the chance to get to know the youngest Sawada." Reborn replied nonchalantly, not even taking a moment to look at the boy. "Since you've been gone so long I never got the chance to meet you."

Tsuna stopped in front of a shop and looked inside the window at the merchandise being sold. Though that was what he was doing, his eyes were looking at Reborn's reflection mostly. "Just who are you?" He asked.

The man raised a brow, but did not respond.

"It's not normal for all these strangers to move into the house," Tsuna turned away from the shop and continued to walk to his destination. Only hearing Reborn following after him allowed him to continue with what he was saying, though he no longer looked at him. "Nor is it normal for one of the strangers to take such an interest in the youngest son who returns. Plus, you were interrogating me earlier as if you were suspicious of me. What are you? A cop? A criminal? A spy?"

Reborn raised a brow. What an interesting child. As Tsuna came to a stop in front of another store, he leaned down to whisper in his ear. "And what about you, Tsuna? Aren't you the same with all your questions and wanting to know just who I am? What right do you have to know who I am?"

Whipping around, Tsuna scowled when he found that the man had disappeared like magic. 'Damn you, Reborn.'

This is why the underground world was such a pain in the ass. It was a huge game of puzzles and mysteries. It was a race to get the information first because whoever got it first was the winner because they could get to you faster and make plans for your demise without you being able to do anything.

But that was why he liked it. It was so much fun getting involved and screwing around with Mafiosos because they would never discover him.

In the underground world, Sawada Tsunayoshi, Il Solitario Cielo, never lost to anyone.

A/N: Il Solitario Cielo- The Lone Sky

Cavaliere- Knight

Devi parlare bene l'italiano, allora- You have to speak Italian well then?

Non sarei sopravvissuto in Italia per quattro anni se non si impara.- I wouldn't have survived in Italy for four years if I didn't learn it.

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