Why, hhhheeeelllllooooo everyone! I am your graceful host the 3rd Dragneel, and I'm here to present to you my latest story, a Fairy Tail x Bakugan crossover. I know this seems random and truth be told, it is, but recently I've been rewatching the whole series and it just stuck to my head. I know, I know I have other stories, but I couldn't just hold this in, you know?

Anyways, this story will take place after Acnologia's attack on Tenrou Island, where Natsu will be teleported to New Vestroia. As for what series he'll be in, it'll be the second season as I didn't want the first one. Note I made the resistance brawlers older, so Mira will be 18, Ace will be 17 and Baron will be 15, and before you ask, DAN WILL NOT BE BROUGHT IN. This is just my own take on the series, and Natsu will use a Bakugan, Leonidas from the Battle Brawler game(if you guys remember it.)

And with that, let's begin our story….

'On Tenrou Island'

"RRROOOAARRRRR!" This was the terrifying sound the Fairy Tail members heard as they looked to the sky. The black dragon of the apocalypse Acnologia was there, wreaking havoc on the sacred grounds. As if they didn't have problems of their own, what with the unexpected interference from Grimoire Heart and Zeref(which no one knew was on the island before them).

"Fire Dragon Iron Fist!" One brave soul yelled as he punched the side of the great beast with a flame-coated fist. He wore a red and white shirt, white baggy pants, open toe sandals, a white scaly scarf, but his most noticeable feature was his pink(he calls it salmon) hair. This was Natsu Dragneel, son of the fire dragon king Igneel, and he attempted to defeat the beast, but his attack was nothing to it. "Alright, try this! Fire Dragon Roar!" Opening is mouth, he released a stream of fire at the dragon's head….only for it to remain perfectly fine. "WHAT?!" Annoyed by the boy, Acnologia tried shaking off the dragon slayer, though he stuck to him like a fly in a flytrap.

"Everyone, attack it now!" Erza yelled, much to Natsu's shock.

"Waitwaitwait! I'm still on this thing!"

"Blunderbuss!"

"Soul Extraction!"

"Balyon Formation!"

"Ice Make: Lance!"

"Lightning Dragon Roar!" Natsu let out a scream of fear as all his friends attacked the dragon anyways. Luckily, his exceed Happy flew him up just in the nick of time.

"Sky Dragon…."

"Iron Dragon….."

"Fire Dragon…."

"ROAR!" Natsu, along with Wendy and Gajeel, let out their signature breath attacks, in hope of at least injuring the dragon. A sizeable explosion took place on the black dragon, creating a large smokescreen.

"Did we get him?" Lisanna asked as it seemed like the great beast was defeated. Oh how wrong they were. When the smoke cleared, Acnologia stood, without so much as a scratch.

"No way, that thing didn't even feel that?!" Elfman yelled as Evergreen clinged on his arm. The dragon gave a roar that sent chills down everyone's spine before flying up in the air.

"Wait, is it leaving?" Mira asked with a slight hint of hope. That hope was shattered as he flew right above the island and began gathering energy into its mouth.

"It's a breath attack! He's gonna blow the whole damn island!" Gajeel said with obvious fear in his voice.

"What do we do?" Wendy asked with tears in her eyes as she hugged Carla.

"We can try creating a scripture barrier." Levy suggested.

"Yes, but we would need a lot of magic power to create something strong enough to block its attack." Freed said grimly.

"Everyone! Hold hands so we can transfer magic to Freed and Levy!" Makarov commanded. He would be damned if he would like his children perish when they still had a lot to live for. And so, everyone member held each other's hand, with Natsu taking Lucy on his right and Erza on his left. Even in a situation like this, he needed to cheer them up.

"Come on guys! We're Fairy Tail! We won't let that big lizard beat us right?!" He said with encouragement in his voice. Though frightened, the members couldn't help but smile.

"You certainly know how to lift people's spirits Natsu." Erza said with a small but grateful smile on her face.

"Yeah, no kidding." Lucy added while giving his hand a slight squeeze. "I'm glad I met you and when we get back, there's something I need to tell you." Erza gave her a slight glare before giving Natsu a 'gentle' squeeze, making him 'eepp' a bit.

"I have something to tell you as well."

"O-okay." Man, what did I do? He thought in fear.

"No matter what, you are the best brats I could ever have!" The guild master said with tears streaming down his face.

"LET'S GO HOME!" Was the last thing Acnologia heard before unleashing a powerful breath attack.

"The bond all of you is amazing." a girl with long blonde hair and emerald colored eyes said while clapping her hands together. "Which is why you will all live. Fairy Sphere."

*BOOM*

A large explosion took place where the island was, creating a large flash. After several minutes, Acnologia let out a roar of victory as Tenrou Island was now a smoking crater. That day would change Fairy Tail forever.

However, that's not where Natsu's story stops….

'Unknown plane of existence'

"Hmmmmm," Natsu let out a tired moan as he started regain his conscious. "Geez ice princess, do ya have to make a huge mist inside the guild? Erza's gonna kill you…." With that, he went back to sleep, only to realize what he said and jolted right back up. "Wait, mist?!" Natsu looked around and saw he was in some kind of mist, which seemed to spread miles away. "Where am I? Huh?" Looking at his arm, Natsu's eyes widened in shock as he was now wearing his trademark black and gold vest, white baggy pants, black open toe sandals and all the bandages on his body was gone. "What the hell is going on here?"

"I see you've finally awoken Natsu Dragneel." A voice called from the mist.

"Hello? Who's out there?" Natsu questioned as he lit his hand on fire to get a better view of who was speaking to him. Six figures appeared a few feet from him. "Who are you guys?"

"We shall tell you our names if you feel you are feeling well." Said the front figure. As far as Natsu could tell, he wore a red and orange armor with two blades on his back and a red sort of medallion in the middle of his chest.

"Um, yeah I feel great. Did you guys heal me?"

"I was the one who healed you Mr. Dragneel." A feminine voice said from the right side of the first speaker. She wore a light purple armor with long white ribbons on her sides, a dark blue tiara and long pointy ears that were stretched on both sides of her head. "The one who brought is him, Apollonir and my name is Lars Lion."

"Oh, um, thanks for healing me." He said while bowing. Hey the guy may be very destructive and hot tempered, but he knew to respect people when they did something for him.

"It is no trouble Natsu Dragneel. Allow me to introduce my companions." Lars gestured to another armor wearing figure, who wore a white robe underneath his brown and yellow shoulder pads and mask. "This is Clayf."

"Hello Natsu Dragneel." The newly dubbed Clayf said.

"This is Frosch." Lars then gestured to the shortest member of the six, who wore blue tribal clothing, an octopus like hat, a long white beard(which reminded him of Hades) and a white staff in his right hand.

"Hiya kid, nice to meet you." Frosch said in a slightly energetic tone, even for an old man.

"Next is my other female ally, Oberus." Oberus had a petite feminine build with a green robe along with her green armor on the upper part of her body, a queen like crown on her head and short light green hair.

"Hello young one." She said in a calm tone.

"And the last of my allies is Exedra." The last figure was almost as tall as Apollonir with dark purple armor over a light purple robe, large shoulder guards and two red horns on each side of his helmet.

"..."

"Well it's nice to meet all of you, but where am I? Last thing I remember was being on Tenrou island for the s-" Natsu's eyes widened as he recalled his family fighting Acnologia and how it used a breath attack on them. "MY FRIENDS, WHERE ARE THEY?! LUCY, ERZA, GRAY, HAPPY….."

"Calm yourself Natsu Dragneel, they are save." Apollonir said while raising a hand.

"Then where are they?" He growled, much to the urk of some of the warriors.

"If you want to see they, then look here." Frosch summoned a pool of water and gestured Natsu to look at it. What he saw made his eyes water a bit: it was his friends, all sound asleep in different areas of Tenrou, which looked perfectly fine, except for the large yellow sphere which had the Fairy Tail symbol on it. "You see? All your friends are fine, they're just under hypersleep, which won't be lifted for another seven years."

"Wait, how do I know this isn't fake?" Even though he just met these people, he felt they weren't necessarily lying to him, but you never know.

"You think we're lying human? You have guts for making such an assumption of the Legendary Warriors." Exedra warned while crossing his arms.

"Legendary Warriors? I've never heard of you guys."

"Well that's to be expected as your world has never heard of our kind." Okay, now Natsu was confused, what did they mean by that? "You see, you are not in Earthland, rather, you're in the domain of the Legendary Warriors of New Vestroia."

"Ves…..tro...ia?"

"Yes, it's another dimension where creatures called Bakugan live in. All six of us are Bakugan as well and our mission is to watch over the Infinity Core." Frosch added.

"Infinity Core? What's that?" Apollonir snapped his finger as a bright sphere appeared in front of Natsu. At first he covered his eyes due to the brightness, but as it died down, he marveled at the colorful sphere in front of him.

"The Infinity Core is the balance of power given to every Bakugan. Without it, our worlds would be unstable….like before." Lars said in a saddened tone, which Natsu picked up.

"Allow us to explain….." Once again, the Pyrus warrior snapped his fingers to bring an image in front of the dragon slayer of six different worlds. "Vestroia was once separated into six different worlds for each element: Pyrus, Aquos, Haos, Ventus, Subterra and Darkus, or more commonly, fire, water, light, wind, earth, and darkness. Here, each Bakugan lives in their own elemental environment and it had been that way for eons, until Naga appeared." Natsu noticed how grim everyone looked, even though they were wearing masks.

"So….was Naga a bad guy?" He asked dumbly.

"Yes, you see he was a very special kind of Bakugan, as he, along with his sister Wavern, were the only known Bakugan to not have their own element. Angry with how things are, Naga set out to disrupt the balance of Vestroia by entering the different worlds, gathering recruits to fight for him, all to obtain the power of the Infinity Core." Clayf said.

"But you beat him right?"

"No, he succeeded." Exedra said in anger, much to Natsu's shock. "However, if it wasn't for the Battle Brawlers and Dragonoid, then Naga would have taken the Core and reshaped all of Vestroia in his own image." The Darkus warrior waved his arm in the fog, creating an image of New Vestroia, which had rivers, forests, even tall rock pillars in several areas. Natsu could only look in awe at how beautiful it looked.

"But everything looks fine to me, so why am I here?"

"Natsu Dragneel, we summoned you here to ask for your assistance." Oberus said.

"Wait, you need me help? For what?"

"I did not finish. Please stay quiet." The Ventus warrior said with slight irritation in her voice, which made him nervous enough to calm down. "You see, after months of peace, we should have expected something to occur, but we never expected this." The image Exedra showed changed to massive flying machines sending some kind of wave, which transformed the Bakugan into small balls, to which a large vacuum machine sucked them up.

"Woah, what the hell are those things?" Natsu asked, even though he felt a bit sick just looking at them, it drew his curiosity.

"They're known as the Vestals, an alien race that has invaded New Vestroia." Apollonir said with anger in his voice. "And what's worse, we cannot fight back as they had created 3 devices called Dimension Controllers, which keep the Bakugan in sphere form and they have the gall to use our brethren as a means of entertainment." The scene changed to an advanced city(at least to Natsu) and the group witnessed two Bakugan in their released forms, battling each to the death and screaming in pain. Every warrior present, even the normally calm Oberus, had a look of disgust behind their masks.

"How could they…" Natsu muttered while clenching his fists. He had seen bad things in his life, but never something this violent. He saw how one of the battlers used some kind of collar to shock their Bakugan into battling more, all while it screamed. What made things worse was the fact that people were cheering. "How could they let those Bakugan fight like that, and enjoy their pain?!" he then turned to the warriors with a serious expression. "What can I do to help them?"

"Really, you want to help free our brothers and sisters?" The Darkus warrior said, even though he was grateful on the inside. The other warriors were impressed with how quickly Natsu agreed to help them.

"Nothing living should be put out to fight and cry just for people to be entertained. But I do have a question: will I ever get back home?"

"Of course Natsu, we would never leave you here if you didn't do anything wrong." Frosch said, getting him to grin.

"Cool! But where would I go to stop these guys?"

"That is for you to decide Natsu Dragneel." The leader of the six said as he opened a portal behind Natsu, much to his shock. "You can do what must be done if it means our fellow Bakugan." Natsu looked at the portal before looking back at them with his signature grin.

"I promise I won't let you down. I'm fired up!" With that, he jumped into the portal. His words brought an unseeable smile of the warrior's faces, even Exedra smirked a bit.

"Are you sure it was wise for him to be let into New Vestroia by himself?" Clayf asked Apollonir.

"Believe me old friend, I haven't sent him alone." Reaching into his pocket, the Pyrus warrior pulled out a red Bakugan with several markings around its body. "Which is why I'm sending this guide along with him. Go." He threw the Bakugan into the same portal, hoping that things would turn out well. Oh how high their expectations were, and how easily they'll fall.

So I know the intro was kinda lame, but like my other stories, this is but part one of the introduction. And before I get the BS on how Dan, Marucho and Shun aren't here, this is AU, meaning they really won't be in the story. The only Battle Brawlers we'll see are the resistance brawlers, so Mira, Ace and Baron. As for who will take the Aquos and Ventus Bakugan on the team, let's just say if you've seen Soul Eater and High school DxD, then you'll see a female from each in this. That's right, I'm adding alternate versions of two characters on those shows in this fanfiction! Hahahahahahahaha…..hahahaha….ha…. So yeah, they won't be revealed until later on.

Now here comes the part some of you might spam me for….this is a Natsu x SHORT harem story. Like I always say, this guys deserves one, so he'll be getting it. And before you give me your christmas list for this, he will only get 4 GIRLS FROM HIS WORLD, AND TWO OF THEM ARE ERZA AND LUCY SO DON'T ASK FOR THEM PLEASE. I didn't mean to yell, but some people just give me a humongous list for a harem, which is too much for my brain to handle.

As for how the story will go, it'll pretty much follow canon for this series, though there will either be filler chapters or scene alterations as Natsu is replacing Dan. I'm sorry to Dan fans. So, now that that's out of the way, I hope to at least reach 10 followers before the next chapter is up, so look alive.

Next time: Welcome to Vestroia partner!

P.s. This chapter is short because I'm visiting Mexico today, so I wanted to put it up before getting on the planeXD