A/N: This is a cross-over fic for a lot of different anime so I didn't bother putting which, hope you guys don't mind… Hope you like it~ enjoy!

Prologue-000

The sound of the autumn leaves rustling…
The cool breeze whisking away pink petals…
The warm sun's rays felt hot on his face…
It begins…

Tsuna blinked his eyes open and slowly his vision cleared.
His caramel eyes widened as it took in everything he saw.
What was this place?
How did he get there?
And what was he doing here?
He then heard a groan next to him.

"Dame-Tsuna…"

"Reborn! Where are we?"
"Hmn? What are you blabbering about—"

The tutor too, saw what his student had.
Shock momentarily flashed on his face before going back to his usual passive one.

"I-is this a dream?" Tsuna muttered rubbing his eyes.
"This is obviously not a dream, Dame-Tsuna." The tutor remarked whacking his student upside the head. He had also gotten his adult form not too long ago.
"Ouch! That was totally uncalled for!" The brunette whined nursing his now bruised head. Now normally the raven would smirk and take amusement upon Tsuna's pain but he remained serious and looked at the unfamiliar scenery once more.
He had never come across such a place before…

"This is not an illusion either…" He muttered.

"T-then…"

"This is the real deal." Reborn finished.

They were in a place where everything was surrounded by plants, tress, flowers and all kinds of plant species that they never knew or heard of. It was a beautiful and breathtaking sight to see the green pastures in its untouched state, but now was not the time to be sight-seeing. It seemed like they were in a huge garden or something.
But what really caught their eye was what lied around them.
Several unconscious bodies surrounded them, and they were all starting to wake up.

"Where am I?" A spiky blonde muttered. He had ocean blue eyes that closed into slits, whiskers and wore an orange jumpsuit.
"This is not Konoha…" He stated looking left and right.
"Obviously not." A voice behind him declared.
The blonde looked back to see a raven haired man with deep red eyes.
"Ah! You're Sasuke's brother aren't you?" The blonde pointed. "What was your name….? Ita…Ita- Ah! ITASHI!"

The raven resisted the urge to smack this boy and just sighed silently.
"Yes, thank you for the introduction and by the way that's Itachi you idiot." The other replied sarcastically.

Tsuna watched the odd duo and a few others…they were all weird. Well if you're Tsuna you wouldn't be too surprised for he met weird people almost everyday.
Some try to assassinate him, some try to rape him and some were actually his friends.

"Reborn…who are those people?" Tsuna whispered.
"Hell do I know. I haven't exactly gone here for a vacation trip you know."

Tsuna sighed at this.

It looked like a lot of them were confused. The blonde from earlier pulled at his hair frustrated and yelled.

"Where the hell are we!"

"You are in Eden." A voice declared.

Everyone quickly turned to where the voice came from.
A huge screen had appeared behind them and in it, showed a woman with long raven hair and deep red eyes who sat on a chair, next to her, two girls, one with long blue hair and eyes and one with short pink hair and eyes stood on either side.

"Who the hell are you! And why did you bring us here!" A guy with long white hair and golden eyes yelled fiercely. He had wolf like ears and wore a red kimono-like outfit.

"My, how rude. Well I guess it's only fair that I tell you who I am," The woman started.
"My name is Yuuko, I am known as the witch of dimensions. And I have summoned you all here for a little…competition."

"Why? For what purpose?" Another asked. He had Black hair and purple eyes; he wore a black school uniform.

"Hm~ because I got bored~" Yuuko chimed.

The others grunted and glared at the witch.
Then the woman's red eyes narrowed, her smile turning into a devious smirk.
"Let me explain."

"This Eden is not only the name f the place but also the name of this game, Eden is a master servant battle, in which you have to fight in order to survive, like a battle royale as others would say."

'Battle…royale?' Tsuna thought.

"You can team up with the person you have been summoned with." Yuuko continued.

"One is the fighter, also known as the servant. And the other is the sacrifice otherwise known as the master, also the target of attacks and takes damage done to the servant."

"Then how do we know who the servant and master are?" The spiky blonde from earlier asked.

"If you check on your arms you'll see armbands with symbols."

The group checked and indeed there were armbands wrapped around their arms.

"Please take note that these are necessary to know that: you are participating, your current location and a sign that you are still alive."

Everyone nodded as they took the information in.
"There is also a bomb implanted within and will go off the moment you try to take it off, unless an enemy took it once the battle has ended and you have been defeated."

"W-what happens to the loser…?" Tsuna muttered out shyly.

"You can do whatever you want to the losers, it's usually the master who calls the shots and decides what to do to the losing pair." Yuuko smiled. "Oh and one more thing, once the servant has lost, it's the master who dies. The winning pair can either choose to kill the remaining servant or add him to the team, for the master can have as many servants as they can."

Tsuna didn't like this. He looked over to his tutor who had been listening intently.

"You are also allowed to go without a partner but it will be difficult if you're a master type for the armbands will prevent you from using your weapon or powers. Not only that you have to get the armbands after the fight rather than just defeating the enemy, its proof of your victory."

"There is a time limit before every battle and if you don't kill the enemy in time…well~ I'll let you find out for yourselves." Yuuko chimed maliciously.

"That damn witch is just playing with us!" A very tall raven cursed angrily.
"Maa, Kuro-tan, just relax~ this seems interesting~" A blonde beamed as the taller fumed upon the nickname.
Yuuko smiled at this, finding the two amusing before continuing.

"The final battle of the 5 finalists will take place in another place; I'll let you know that at a later date."

"And what if we refuse to battle?" A young boy with an eye patch asked.

Yuuko gave him a coy smile before replying.

"Then you die."

Others gasped, tension started arising.

"Can't you just let us go home after the battle has been decided?" A white haired boy asked smiling sheepishly.

"Now where's the fun in that?" Yuuko pouted playfully.
The boy frowned and kept silent.

"There are but four rules."
"First, pairing with the same type, servant/servant, master/master, is strictly not allowed."
"Second, you either kill or be killed in this game. Only the winning pair shall survive this game. No exceptions."
"Third, in battle it is strictly the servants' job to fight and protect the master."
"Finally you can't back out once the match has begun."
"Other than those rules, you can go all out on the opponent and do whatever you wish."

Tsuna gulped and unknowingly moved closer to Reborn.

"Now then, these are the following participants…"

"First up are Frau and Teito Klein,"
"Next we have Oz Bezarius and Break Xerxes."
"We have Suzaku Kururugi and Lelouch V. Britannia."
"Next are Allen Walker and Tyki."
"Then we have Inuyasha and Sesshomaru"
"Pair number 6 is Dark Mousy and Daisuke Niwa."
"Then we have Kurogane and Fai D. Flowright."
"Next are Ciel Phantomhive and Sebastian Michaelis."
"Participant 9 is Itachi Uchiha and Naruto Uzumaki."
"And Last but not least, Reborn and Tsunayoshi Sawada."
As each pair was mentioned, pictures of them were shown at the screen.

"And this is the battle for Utopia!"

The ground suddenly shook and the place they were stepping on began glowing.
"Reborn!" Tsuna yelled.
"Hold on to me, Tsuna!" Reborn stated, taking hold of his student.

Tsuna blushed a bit before nodding.
"W-what's happening!" Tsuna asked nervously.
"It's starting." Reborn muttered, his jet black eyes hidden underneath his fedora.

Then in a blink of an eye, every pair vanished from their previous spots, each sent to a different location.

From her chair Yuuko gave a knowing smirk and gazed at the screen. Her ruby orbs gleaming with mischief.

"Saa, let the games begin…"

End of Prologue

A/N: Wooh! And there it is~ the rest will be explained on the next chapter~ I seriously wanted to get this idea off my chest. Badly. I always wanted to write about a yaoi crossover battle royale and here it is~
Please don't kill me for making Yuuko Ichihara slightly the bad guy. I seriously think she rocks and decided that this role suited her.

Oh and tell me if you want another pairing added~ I'll see if I can~ But make sure it's a pair not from the same world that has already been mentioned and it has to be from an anime that I know of so that I can keep them in character~
Also any ideas, comments, suggestions and constructive criticism is highly appreciated and would be very helpful~ Thanks!

One last thing, I haven't finished some of these anime so some characters may be a little OOC.
Anyways R&R please~