A/N : First thing first, this is an AU (or AT depends on your POV) which is Tsuna was grown up in mafia environment and he lived in Italy before moving to Japan. Haru and Kyoko were a well trained assassins and work under Tsuna since 12 years old. And Tsuna was not a "No-Good" person and he had a "twisted" mind (since I want him to be a little bit yandere). But Tsuna wouldn't lose his good quality, though it would be in a different way than before.

Warning : Major OOC-ness (see the A/N), grammatical error, and so on.

Disclaimer : They belong to their owner.

Read and review. But no flame, please! If you don't like it, just simply leave…

Prologue

Young Vongola

"Good morning, Tsuna," Reborn greeted him casually as the boy woke up in his massive king-sized bed. The strongest hitman stood at the end of the bed, already wore his initial suit and fedora. He was holding a gun, and now; he waited for Sawada Tsunayoshi to get ready. But the certain boy only groaned and yawned. He rubbed his eyes slightly before got up.

"Good morning, Reborn," greeted Tsuna with a sleepy voice.

"This is your first day at school, Tsuna. You didn't want to be late, right?"

Letting out another yawn, Tsuna woke up and headed to his bathroom and take a shower. Reborn already headed to the dining room to get his breakfast while waiting for Tsuna to come up with his Namimori Middle School's uniform. Reborn smiled when he saw his pupil was ready. Tsuna ate his breakfast quietly when a little boy wearing a cow suit with afro hair appeared. Behind him, there was a girl with auburn hair and tied into high ponytail tried to catch the boy.

She was Miura Haru, an assassin who served under Tsuna. She might be look like a noisy fourteen years old girl, but actually she was a well trained assassin. She devoted herself as Tsuna's loyal subordinate and self-proclaimed future "wife" due to her affection to Tsuna.

The question now, why was a Middle School students like Tsuna had an assassin serving under him? Well, the answer was easy.

That was because Sawada Tsunayoshi was the heir of Vongola Famiglia, the strongest mafia family.

"Good morning, Tsuna-san. Are you ready to go to school?" asked Haru as she tried to make Lambo—the boy—sat on his chair. Tsuna only smiled and nodded.

"Lambo can go with us, since we only needed to drop him in the kindergarten, right?" said Tsuna. "Have you got your breakfast, Haru?"

"I have. I'll wait in the limousine with Lambo," said Haru.

"Wait, Haru! Where's Kyoko-chan?" asked Tsuna.

"Oh, she's still upstairs. You want me to call her?" asked Haru.

"No, it's fine," said Tsuna.

Sasagawa Kyoko was another assassin, the partner of Haru who also served under Tsuna. But she was a soft-spoken kind-hearted girl with innocent look. No one could guess that she was a dangerous assassin. Kyoko was very glad when Tsuna told her they would move to Japan, her and Haru's homeland. She told him that finally she could meet with her older brother. Tsuna was glad that both the assassins didn't refuse the idea, though it came from Vongola the Ninth and Sawada Iemitsu, Tsuna's father.

As the Vongola Decimo, Tsuna has a lot of things to learn, even though he grown up in mafia environment and with Reborn as his home-tutor, Tsuna had seen the mafia world, the cruelity and all of that.

"Quit daydreaming! You gonna be late for school!" said Reborn as Kyoko was coming downstairs.

Tsuna got into the car and followed by Haru and Kyoko who sat on his sides. The drive was calm except for Lambo's yelling to play pirates with the driver. Kyoko and Haru tried to stop the boy when finally, Tsuna snapped.

"Lambo, keep it down, will you?" asked Tsuna with that voice. The soft voice which full of authority, murderous aura and killing intend who sent almost everyone in a shiver; including Haru and Kyoko who suddenly shut their lips.

Lambo, also sense the danger, kept quiet during the trip until they drop him off in the kindergarten. Tsuna walked him inside with a soft smile (oh, the sudden change of demeanor) and waved at him cheerily. Lambo also waved and ran to his new class room.

"Tsuna-kun… Don't you think that was a little bit harsh for Lambo?" asked Kyoko carefully.

"Hm? Which part?" asked Tsuna as he smiled softly at her.

Kyoko and Haru only sighed.

When they reached the school, they went to the headmaster's office first before they could go to the classroom with their homeroom teacher. After a short introduction they started to study. Tsuna looked around his class when a silver-white hair caught his attention. He sat in the front row, with both his legs was on the table like he didn't care what the teacher would do to him and slept soundly.

Kyoko was seat beside Tsuna as for Haru was behind him. In the corner of the classroom, another boy caught his attention. Tsuna looked back and saw a tan skinned boy with dark hair and a friendly air around him.

Tsuna sighed deeply.

Guess he would find his guardians soon enough.

A/N : Short =,=" I know... But it's just the prologue. I'll try to make it longer... and since this story hasn't beta-ed, anyone up to this job? I'm sorry for the grammatical errors... :)

Please, leave a review so I would know that there's someone out there who read and like this story... if you don't like it, please don't send me any flames... Just simply leave it, okay?

~Cheer,

Cloud of the Sky