Hello dear readers! This is my first time trying a Xover fic and I hope you enjoy it! I was watching KHR and I couldn't get Tsuna's hair out of my mind, it kept reminding me of Harry's hair and then I started getting ideas...

Disclaimer: I don't own the works of genius that are Katekyo Hitman Reborn and Harry Potter!

WARNING: This fic may contain many cliches known to fanfic readers everywhere, but I hope that at least some of my ideas are original. If not—well, this is fanfiction people! We can't all be geniuses at literature!

XxxxxX

Chapter 1: Rebirth

If there was one thing in the world you could ask for, what would it be?

Fame, Fortune, or maybe a lifetime supply of churros, who knows.

I'd you asked Harry Potter what he'd want, the answer you'd get would surprise you. He didn't want gold or jewels, what he wanted was to simply end the hell that is his life.

Harry Potter didn't want to open his eyes, he didn't want to have the small amount of hope he had gained that perhaps this time it would be different, that this time he would open his eyes and find himself with all his loved ones, his parents, best friends, his beautiful snowy owl that had died so long ago, the only memories he had of her were the cold, dead eyes staring at him after she got hit by that stray curse that terrible day so many years ago.

He knew he couldn't go on pretending he couldn't hear the noises from the hospital, the nurses congratulating the woman holding him on what a healthy baby she had, of the smell he experienced each and everytime he found himself in the same situation.

Harry Potter was cursed, the moment he had achieved the most sought after wand in the world, the moment he spun the resurrection stone in his hand, the second his innocent eleven year old self had opened a mysterious Christmas present, only to find out it had been his father's, he should have never touched that cloak! If only he had known, that his life would quickly spiral into the hellhole that he was currently in, he would have never touched the stone, never become the Master of Death.

It had all seemed so easy, he had never coveted the elder wand, placed it back in Dumbledore's tomb, never to see the light of day again.

The stone had been lost in the forest, never to be seen again. The cloak he had kept, to do with as his ancestors had done, to give it to his heir.

He had been happy, married Ginny, had three children, and they had been happy.

His children grew up, he became a grandfather, a great-grandfather even! He had grown old, and then died peacefully in his sleep.

That's when everything went wrong. He had expected to finally be able to be with his dead parents, friends, even the man he had once thought of as a grandfather.

But instead of that, he had found himself in a white void, with a figure dressed in a black hooded cloak, a figure that he would hate more than anyone he had ever hated in his life, even Voldemort. Because while Voldemort had taken many of his friends and family, he had always known they'd be reunited again in the afterlife.

The figure he later learned to call Death, carefully explained that while he had done everything in his power to get rid of his unwanted title, once the deathly hallows were united by one person, the title would forever be theirs.

That was when he learned the truth, that being the master of death wasn't a priviledge, but a curse.

He would never see his loved ones again, forever would he be banned from the afterlife, cursed to be reborn again and again in different worlds, time periods, and countries.

At first he had fallen into a well of despair, his first life spent with him pursuing any leads he could find about anything remotely like his curse, but after wasting a whole life searching, he found that it was useless to waste away for something that seemed impossible to achieve.

After that it had quickly fallen into a routine of sorts, be born, go to school, get a job, and later die.

Of course, there had always be some lifes in which his routine wasn't the same. In some lives he was considered a prodigy, with an intelligence that rivaled many of the greatest minds in history. In other lives he successfully blended into the shadows, helping many people behind the scenes. A memory of Hermione telling him about his 'saving people thing' reminding him about his first life, never letting him fully let go of the life that had been his first, never letting him forget about his first family.

Many of the worlds he was born in were the same, yet some others were so different he had to learn to adapt rather quickly if he wanted to survive. He treasured the few lives in which he could live as an ordinary person, free of the burdens the Wizarding World has once thrust upon a small eleven year old boy, a boy ignorant of the dangers he'd face once he entered.

He couldn't help but hope, after each of his deaths, that perhaps his torment would finally end, that he'd be allowed to be reunited with his loved ones, only to be crushed everytime he woke up to see the sweaty but joyful face of his new mother.

Harry Potter opened his eyes and saw a woman with light brown hair and kind eyes staring at him. The nurse looked at her and asked her in Japanese,"What do you wish to name him?"

The woman looked down at her son, smiled and said,"His name will be Tsunayoshi. Sawada Tsunayoshi".

XxxxxX

5 years later

Sawada household:

Nana Sawada was a normal housewife. She was married to a lovely husband and had two beautiful baby boys. Her oldest,Natsume, was currently 7 years old, while her youngest, Tsunayoshi was 5 years old.

Today was the day her little Tsu-kun would begin school! She couldn't wait for her little boy to begin his journey to the world of academics, she just knew he'd excel if he tried his best! Her oldest, sadly disagreed with her and always tried to annoy his younger brother, but she knew it was all in good fun, her two boys loved each other!

Sometimes she wondered who the oldest brother was, her youngest always seemed to turn every juvenile insult thrown at him by his 7 year old brother around so Natsume ended up in trouble...

Nana's mind decided to change the subject as she once again began to wonder about her Tsuna's first day of school, and what she should make for his lunch.

XxxxxxX

Harry Potter, or as he was called now, Sawada Tsunayoshi, was lying under the large tree in his backyard, reminiscing his past 5 years as the son of Iemetsu and Nana.

At first, he had been content with the ordinary life this had been turning out to be, with his new mother always cooing and playing with him, and his idiotic father doing imbecilic stunts while his mom stood by, amused.

But then one day, a few months after his second birthday, his mother had left to buy some groceries and had left him in the care of his father, when a strange man came into the room along with another man, both of them wearing fine quality tailored suits.

That was the day he discovered his father's secret, he worked in the mafia, the Italian Vongola Famiglia to be exact.

So many things had been unearthed that day, his father's position as the CEDEF leader, and the possibility of him and his older brother Natsume of perhaps becoming the next boss if the others died.

It had seemed very farfetched, due to there being more than two other possible, more likely candidates, children of the current Vongola Nono.

Of course, he knew all about the mafia, specifically the Vongola Famiglia, after all, once upon a time, his name had been Giotto, and he had once gone by the title of Vongola Primo.

XxxxxX

FLASHBACK:

Giotto was lounging on a couch, trying to get a few hours of sleep, handling a mafia famiglia wasn't as easy as some made it look, it wasn't all booze, money, and women.

There were assassins, famiglia members to take care of, other mafia families either asking for an alliance, or ordering him to help them with other troublesome things, but the thing he loathed more than anything was the paperwork.

Almost every hour of his free time and maybe even when he was fighting, he had to deal with paperwork. Mountains and mountains of paperwork.

But he knew all his work was worthwhile when he saw the happy expressions on his guardians, when he noticed all the good he was doing for his people. On those days, he felt like he had finally done something important, and that his curse could be good for some things.

But then he'd get depressed, remember that eventually he would die, and never see any of his precious friends again.

Whenever he thought of that he also grew his resolve, and promised himself that no matter what happened after his death, the Vongola Famiglia would continue to prosper.

END OF FLASHBACK

Tsuna sighed, he had known the silence wouldn't last, no matter his previous lives, he had always kept an eye out for the Vongola. Always in the shadows, he helped out when he could, saving some people from unfortunate assassinations, helping to hack into another famiglia's files, and making silent donations, not that they needed it.

But he had never taken an active roll in the Vongola, not after his time as Giotto, it would have been too painful, to remember his guardians, his best friends.

So as he slowly stood up to head into the house, he decided he would be as ordinary as possible so the mafia wouldn't be interested in him, he only hoped his brother was lucky and the other heirs to the title of Vongola Tenth remained in the living plane, he didn't want to know what'd happen if too much scrutiny was put on his family, even with thousands of years of advantages against others, he had never quite gotten over his saving-people thing, so he wouln't be held responsible for his actions should ANYTHING happen to his brother.

XxxxxxxX

"Hello there class! My name is Yuki Nakamura, but you can call me Yuki-sensei!"

'My god, I'm back to primary school! I don't know how I'll survive this all over again!'

Tsuna was bored out of his mind! Throughout his previous lives, he'd slowly grown to detest the time he had to spend in the educational system. During some of them, he'd acted like a prodigy only in order for it to go by quicker, but he soon found out it was an even worse chore(people always expected him as the 'prodigy' to finish school early and get a career as a neurosurgeon or something equally hard) and he'd also get ostracized by the others because they thought he was a snobby know-it-all.

'I learned that lesson, thank you very much, now, what to do, what to do?'

He was sitting in the back of the classroom while all the other small children were introducing themselves to the teacher, staring out the window.

'Maybe in this life I won't be anything special, I think I'll try for a bit below-average grades, maybe even be slightly clumsy, and get a job as a sushi chef or something. Yes, if something mafia related happens, I'll just remain oblivious and quietly stay away, pretending to be a below-average, normal human boy.'

He nodded happily to himself. He finally had a plan. As long as nothing happened he would keep his mask on, never letting the world know of how dangerous he could really be.

He began to notice that the teacher had been calling him over, and decided that now was as good a time as any to practice his new facade.

The students watched as he slowly walked over...

And fell flat on his face.

Suddenly, all the kids were laughing, talking amongst one another. "Did you see that? He fainted on thin air!" "I know, what a loser! Even my three year old brother can walk better than him!"

As he slowly walked over, he hid a smirk.

'And so, it begins.'

Neither Tsuna nor any of the kids noticed a small black haired boy standing in the shadows staring after the brunette, the only one to have seen the boy's carefully hidden smirk.

XxxxxxxxxxxxX

Hello readers! I can't believe I'm actually publishing this! I actually wrote most of this chapter almost a year ago and I found it a few days ago, kind of surprising how I forgot about it really...

Anyway, I don't know if I'll continue this, but don't expect any updates very soon, so far I'm only working on my Doctor Who fic, and I don't want to become one of those authors with like twenty fics that they leave unfinished.-_-'

Tell me what you think, what are your ideas on Tsuna's watcher?

Don't forget to review!