Author's Notes: Time for a new crossover story! One involving Fairy Tail and Kingdom Hearts – more importantly, Wendy as the main character of the story. Plus, some changes as well.

Instead of the tale taking place in Magnolia, Fiore… we're going to set the events on Tenrou Island, which will resemble Destiny somewhat. As for roles, Wendy is Sora in this one, Natsu is Kairi and won't be a Damsel in Distress and finally Lucy is Riku who will act heartless and more dangerous than usual.

I think that's everything I need to mention. Also, other Fairy Tail characters might play cameos or support class for Wendy.

Right! Let's get started! I don't own Kingdom Hearts or Fairy Tail – they are owned by Tetsuya Nomura and Hiro Mashima. Please enjoy reading the first chapter.

Chapter 1 – Flashbacks and Tasks.

A 12-year old girl groaned and slowly opened her eyes. "Ugh… w-what's going on?" She rubbed her head and took a look around.

"Huh… w-where am I?" The girl asked herself.

She stood up and found herself in a small alley with boxes and brick walls.

"Oh, dear… this isn't Tenrou Island." The girl told herself.

She found a mirror close-by and examined herself – long, dark blue hair that reached down her waist with two bangs that framed her face and reached down her chest, a pair of brown eyes and fair skin.

Her clothes consisted of a red jumpsuit that ended with puffy shorts over a black undershirt with a hoodie that was blue on the inside and black on the outside with white sleeves ending in black edging. Over the jumpsuit, there was a pair of black pants with yellow straps crisscross and held together by a blue belt. Two chains were hanging from the left and right side of her pants. The girl also wore gloves on her hands with white, black and yellow straps. Lastly, her footwear consisted of large black-yellow shoes that had silver soles and a zipper running across the top, they were being held by silver straps holding them together. A crown pendant with a chain was present around her neck along with two red animal-like attachments, which held her hair up in a pigtail-like style.

The little girl gave a sigh and wondered how she ended in this alley in the first place.

"How could this have happened? The last thing I remember was my home being destroyed by the giant monster from my dreams and…" The little girl closed her eyes and began thinking of the events that occurred nearly two days ago.

(Flashback…)

"Wendy?" A familiar voice caused the girl to wake up from the dream that she just experienced now and re-enter reality once more. Standing in above her face was one of her closest friends – Natsu Dragneel.

"Hi, Natsu." The girl known as Wendy simply said along with a sheepish smile.

The boy called Natsu in turned gave her a grin. "So, this is where you've been lazybones."

Wendy pouted. "Hey, I'm not lazy! I was... just taking a nap! T-that's all!"

Natsu decided to tease her. "Really? Then is there a reason why you didn't come to assist either me or Lucy with building our raft?" He asked.

Wendy tried to think of an answer to Natsu's question, but nothing came up. The boy started to laugh which made the 12-year old pout in annoyance.

"N-natsu! No fair! Why must you always tease me?" Wendy demanded, but Natsu only gave her a laugh in response and petted her hair.

"Aw, don't be like that Wendy. I was just teasing you…" Natsu sat down on the beach next to her.

Wendy crossed her hands and turned away in a fake annoyance, but then she smiled and looked at Natsu. As usual, the 17-year old teenager was wearing his black t-shirt over a sleeveless gold trimmed waistcoat, which was always opened, white knee-length trousers that were held by a brown belt, a pair of black wristbands on both wrists and open-toed sandals. His signature scale-patterned scarf was wrapped around his neck. Natsu's pink-colored hair was spiked everyway and his slightly tan skin along with black eyes made Wendy blush. Not to mention that the 17-year old boy was very strong and muscular for someone his age.

"So, Wendy… how was your nap?" Natsu asked in eagerness.

"Well… I had a strange dream that seemed very real, Natsu." Wendy explained to which Natsu looked at her. "Really? What happened in it?" He asked.

"W-well, first I had to choose a one weapon and then give up one in return. Next, I had to battle these small black creatures with yellow eyes and then I had to answer three questions. Lastly, this huge black monster swallowed me up! I couldn't breathe or anything… it was a scary dream." Wendy shivered at the end of her tale about the dream.

"Jeez…" Natsu rubbed the back of his head and resumed the conversation. "That sounds like a horrible dream."

Wendy nodded. "Yea… I just hope I never have to experience a dream like that again."

Natsu patted her on the back. "You won't – don't worry about it. As long as you behave like a good little girl, I'm sure that bad dream will never happen. Now then…" The spiky-haired boy stood up and dusted his trousers. "How about we go and find Lucy? She should be at the obstacle course." He took out his hand for Wendy to grab.

The blue-haired girl took it and smiled at Natsu. "Right!" She agreed with him.

"Great! Race ya to the obstacle course!" Natsu said and immediately took off before Wendy had a chance to react.

"Hey, no fair!" Wendy ran almost immediately after him.

Meanwhile, on the other side of Tenrou Island – there was another girl who was tapping her foot impatiently at the obstacle course and waiting for her two best friends.

She was a 17-year old girl with brown eyes and shoulder-length blonde hair that was tied by a blue ribbon in a small ponytail to the right side while the rest was loose. She wore a yellow-and-black tank top with white-trimmed, blue straps that crisscrossed her entire chest. The girl also sported two blue gloves and matching wristbands on both hands, blue biker shorts underneath a dark blue skirt with a brown belt holding them. Finally, her footwear consisted of leather high-heeled white and blue boots that had white trimmed black straps along with gray soles.

"Ugh… where are those two? They are never around when I need them." The girl told herself with a heavy sigh.

"Lucy! We're coming!" A familiar voice yelled at the girl known as Lucy. She look up and saw that her two best friends – Wendy and Natsu were running towards her. They were no doubt having a race as usual.

Natsu ran ahead of Wendy and reached Lucy first. "I… won… again… Marvell." He was out of breath when he said those words.

Lucy rolled her eyes and smiled gently. "Seriously, Natsu? Racing again? And against Wendy at that?" She asked him.

"Y-yea… Natsu, no fair… why do you… always beat me?" Wendy had just asked this question immediately after reaching both Lucy and Natsu. Like the 17-year old boy, she too was out of breath.

"Cause I can squirt." Natsu plainly explained to her and ruffled her blue hair. Wendy in turn pouted yet again.

Lucy rolled her eyes at Natsu, but gave a smile at Wendy. "Don't worry about him, Wendy. As revenge for beating you, I plan to make him work extra today." She grinned evilly.

Wendy gave a smile at Lucy. "Yay! So, Lucy… what do we need for the raft?" She asked.

"Well…" Lucy took out a list and began to read the supplies that were needed to finish the raft. "We need two logs, one cloth and rope. Come back once you've got everything, kay?" She asked and Wendy nodded.

The blue-haired girl took off to find the items needed while Lucy turned her attention to Natsu. "What do you need me to do, Luce?"

"Natsu, can you please fix the runway on the obstacle course? Turns out that some of the boards were old and keep breaking up… I don't want any of us to get hurt." Natsu looked at the runway – it turns out that some of the boards were indeed old and broken.

"Yea… I can do that. I just need to go and grab some fresh lumber from the shack. Should be plenty to use since my parents left them in case of extreme emergencies like this one." Natsu explained to which Lucy gave him a nod.

"Right. In the meantime, I'll check up on our raft in order to make sure that it's tied up right. After we finish the tasks, we'll meet at the leaned tree by the Seashore." Natsu gave her a nod and went to gather the new boards in order to fix the broken old ones. As for Lucy, she focused on her own task which was checking up on the raft.

All three friends worked on their tasks for the entire day – Wendy found two logs by the seashore, a cloth in the treehouse and some rope in the shack, Natsu had managed to fix the broken boards on the runway on the obstacle course and Lucy checked up on the raft and tied it up pretty good.

Soon, the three friends met at the tree that was leaning at the seashore. Lucy was leaning against with her arms crossed, Natsu was laying down on it and Wendy sat on it whilst swinging her legs back and forward.

"We're really doing this aren't we?" Wendy was the first to ask.

"Yep! I can't wait until we see the other worlds… Maybe we'll find Lucy's home town!" Natsu stated with an exciting tone in his voice.

Lucy gave him a nod – she herself was very curious on her home world since she arrived on Tenrou Island nearly thirteen years ago as a 4-year old girl with only a small dress and ballet shoes. The blonde had no recollection at all about her past or the town from which she came from. This is why she wanted to go out and find her home world alongside Wendy and Natsu.

Once she first arrived on Tenrou, the 4-year old Lucy was adopted by the mayor of the islands – a young woman by the name of Mizu. She treated the blonde as the daughter she always wanted. Although, the person who found Lucy at first wasn't Mizu... it was the 4-year old Natsu.

Eventually, Lucy and Natsu became very close friends and companions… unbeknownst to them both, the pink-haired boy and the blonde-haired girl developed crushes on each other from a young age. But neither revealed their feelings as the years passed… not until the time was right.

Soon, Lucy and Natsu meet their third friend Wendy when she and her mother Grandeeney had arrived for the first time on Tenrou Island. Even at a young age, however – the blue haired girl was quite a shy and nervous person. At first… Wendy had trouble making friends due to her personality. But after she meet Lucy and Natsu… things changes. She was less shy and more open… but only to them.

Lucy and Natsu treated Wendy as their little sister-like figure and the three often played with each other. Soon, the three started getting curious on what was out there in the universe… and thus the idea for leaving the islands on a raft was born.

Lucy turned her attention to Natsu and Wendy. "Definitely. Hopefully we'll find out where I came from… and other worlds as well." She stated.

"I'll miss my other friends and my Mom as well…" Wendy sadly said to herself.

"Don't worry, Wendy! We'll see them again!" Natsu assured her before adding. "We'll even make new friends along the way!"

"He's right, Wendy. Think of how much fun we'll have!" Lucy added with a smile.

"True enough." Wendy smiled at both Natsu and Lucy. "Although, how far can a raft take us?" She asked.

"Who knows, Wendy? If this plan fails, we'll think of something else." Lucy assured her.

"So, Lucy… suppose you get to another world, what would you do there?" Natsu asked.

Lucy went into deep thought for a few minutes and then gave her reply. "Well… I haven't given it any thought to be honest. I've just wondered… why are we on this island?" She asked her friends.

"Well…" Wendy tried to think of an answer as did Natsu, but no luck… unfortunately.

"Guys, if there are any other worlds out there… why did we end up on this one?" Lucy asked them.

"Maybe… it was destiny?" Natsu asked to which Lucy responded with. "I doubt it, but good guess… anyways, suppose there are other worlds – then ours is just a small part of something much bigger. So, we could have just ended up somewhere else, right?" The blonde asked.

"I don't know, Luce." Natsu replied.

"Exactly. That's why we need to leave the island and find out. Sitting here won't change anything. It's the same old boring stuff… let's go and see what's out there." Lucy finished to which Wendy gave her a smile and Natsu a thumbs up.

Wendy got up from the tree. "I'm gonna head home, you guys. Mom is probably worried about where I am. See you all tomorrow." She walked away from the tree towards the docks.

"See ya, Wendy." Natsu told her while Lucy waved goodbye.

A few minutes later after Wendy left only Lucy and Wendy were left on the play island.

Natsu got off the tree and turned his attention at Lucy. "So, we ready for this?" He asked and she nodded.

"Yeah, it's time – even though I'm a little nervous about all of this…" Natsu gave her a grin and wrapped his arms around her. "Don't worry about it, Luce. Nothing bad will happen... so long as we stick together." He reassured her.

She gave him a nod along with a gentle smile. "Thanks, Natsu. I'm glad you are around to assure me or Wendy that nothing bad will happen." She told him.

"Don't mention it. Oh! That reminds me… I have something for you." Natsu let go off her and started searching for the mysterious item in his pockets.

"Really? What is it?" Lucy asked whilst Natsu kept searching for it.

"Wait one moment… Aha! Here it is!" Natsu pulled out a strange star-shaped fruit from his pocket and Lucy immediately recognized what it was. "A paopu fruit?" She asked.

"Yep. You know the legend of course – if two people share one, their destinies become intertwined. They'll remain a part of each other's lives no matter what." He explained.

"Yeah… I'm familiar with the legend, but why did you give me a paopu fruit?" Lucy asked.

"Well… I thought that we might share one tomorrow. Just the two of us." Natsu explained to which Lucy blushed heavily.

"R-really? Share a paopu with me?" The blonde asked.

"Yep. So, do you want to?" He asked and Lucy looked away in embarrassment. "Well… a-alright. But on one condition." She replied.

"And that would be…?" He asked and Lucy turned to look at him.

"A race or a spar with wooden swords. If you beat me, I'll share the paopu fruit with you." Lucy explained.

"Sounds easy enough. But what happens if you win?" Natsu asked.

Lucy thought about what her reward should be and then came up with something very clever. "Alright… here's what my reward should be. If I win the race or the practice spar… you'll have to do something really humiliating in front of me and Wendy." She declared with a grin.

Natsu thought about it and then replied. "Sure, I'm in. But don't expect to win… at all. Since you are a girl and all." Lucy gave a small glare.

"What's that supposed to mean?" She asked him.

"Oh, nothing." Natsu whistled innocently, as he began walking towards the docks.

"Natsu! Come back and tell me!" Lucy demanded as she followed him with a pouted look on her face.

Tomorrow, they would settle their differences no matter… but most important – who the winner of their challenge would be.

-Day 2 – In the early morning.-

The next day, both Lucy and Natsu left the main island in order to prepare for the completion on the play island. The two teenagers had chosen to do both a spar and a race. Only one person wasn't on the play island – Wendy herself.

She arrived a little later on the island and ran towards the playground where the blue-haired girl assumed Lucy and Natsu were. When she arrived, only Lucy was on the obstacle course. The pink spiky-haired boy was nowhere to be found.

Lucy saw Wendy approaching and offered her a smile. "Morning, Wendy. Sleep well?" The blonde asked.

Wendy gave her a nod and looked around. "Where's Natsu?" The blue-haired girl asked.

"He went over to the shed in order to gather some extra tools or lumber… in case something goes wrong with the raft. When he gets back here, we can begin." Lucy stated to a confused Wendy.

Begin? What exactly?

"Lucy, what are you and Natsu planning to do?" Wendy asked.

"Oh… he and I made a little bet yesterday – we're planning to have a race and a spar. If he wins, I have to share a paopu with him. But if I succeed, he'll have to do something humiliating." Lucy explained.

Wendy immediately went into concern mode – she was often worried about Lucy and Natsu starting a fight or getting involved into silly and stupid things.

"L-lucy… are you sure that it's such a good idea to make a bet with Natsu? What if in the end he stays mad at you for good?" The blue-haired girl asked.

Lucy petted her hair and smiled. "Don't worry, Wendy. He's totally fine with it. Trust me – we'll play it safe." She reassured her.

"Well… okay. So, is there anything else we need to gather for the trip?" Wendy asked.

Lucy gave her a nod and took out a list from her pocket to read. "Now that you mentioned it… today we collect provisions for our trip. We'll need mushrooms, coconuts, fish and drinking water. Here's the list and a canteen." The blonde handed a list of items along with an empty canteen.

"Once I'm done, should I come back and watch you both compete?" Wendy asked.

Lucy shrugged. "If you want to. Hopefully we'll not be done yet… Anyways, good luck!" She wished Wendy.

The blue-haired girl nodded and took off in search for the items. In the meantime, Lucy and Natsu had begun their little competition…

For the rest of the day, Wendy had acquired a couple of coconuts from the trees and two or three fishes from the water. Afterwards, she filled the canteen with fresh clean water from the fountain. Now all that was left was the mushroom.

In the meantime, Lucy had won the first event of the competition between her and Natsu. All that remained was the spar…

Back to Wendy, she had found two mushrooms on the seashore and a small cave at the obstacle course. But that wasn't enough… Wendy needed to find a couple more.

She then remembered that there was one in the Big Cave – the one with the underground tunnel at the seashore. Wendy had heard of that place.

A few years ago before she had arrived to Tenrou Island, the young Lucy and Natsu had decided to explore the Big Cave due to the blonde hearing a "strange sound" coming from it. In the end, it turns out that it was the wind that made the sound.

However, both discovered a very strange door with no lock and handle. Unfortunately, young Lucy and Natsu couldn't open it no matter how hard they tried. The two eventually left the Big Cave and resumed their normal lives.

But right now… it wasn't the time for reminiscent. Wendy had a job to finish… that was finding some mushrooms.

Wendy immediately ran towards the Big Cave and entered it. Luckily, she found one on the ground next to the wooden door. Congratulating herself on her success, she turned around and began to leave…

But stopped when she felt a very powerful presence behind her. Turning around, Wendy was surprised when she saw that there was a golden Keyhole on it. Odd… the blue-haired girl had never seen something like this before. Although she had visited the Big Cave several times in the past, Wendy had never seen a golden Keyhole on the door before… until now.

Wendy's first response was to leave the Big Cave and tell her friends… but for some reason – the blue-haired girl was drawn to the power that was emitting from the Keyhole on the door. It felt… so strong… so hypnotizing… Wendy wanted to see if she could find a way to open the door.

Who knows what the blue-haired girl might find on the other side? Wendy took a step closer and was almost at the door. She was going to find a way to open it… she was going to see what was on the other side… she was-

She stopped walking forward when she felt a presence behind her. Turning around, she noticed that someone was hiding in the shadows…

"W-who's there?" Wendy asked.

"Ah… the chosen wielder has come at last. Perfect…" It was the voice of a young woman who said those words.

"Huh?" Wendy asked.

Someone stepped out from the shadows… or something. It was a figure wearing a black cloak. From the way it sounded when it first introduced itself, it seemed female.

"This world has finally been connected." The young woman in a black cloak explained.

"W-what do you mean?" Wendy asked, but she was ignored as the young woman in a black cloak continued. "Tied to the darkness… Tenrou Island will soon be destroyed." She explained.

Wendy was shocked. "D-destroyed!? By who or what!? You have to tell me – please!" She pleaded.

The black-cloaked figure shook her head. "There is so very much to learn. You understand so little…" She explained to which Wendy got annoyed.

"S-stop talking in riddles and tell me how my home will be destroyed soon!" She demanded.

The black-cloaked figure snorted. "Keep asking questions, child. It won't matter in the end… One who knows nothing can understand nothing." She explained and then pointed at the door much to Wendy's confusion.

The blue-haired girl looked at the door and to her surprise – the golden Keyhole was gone. Where did it go?

Wendy turned around and was about to ask the black-cloaked figure on what happened to the Keyhole on the door… but to the blue-haired girl's shock – the young woman wearing the black coat was gone!

"H-huh? W-where did the Keyhole and the black coated lady go to? Did they disappear? W-what's going on…?" Wendy asked herself.

So many questions… yet no answers. Who was that black-coated figure and why was she talking about Tenrou Island's destruction? More importantly, why did the Keyhole appear on the door this time?

"Wendy, where are you?" A familiar voice yelled – it was Lucy!

"Oh, shoot! I forgot to deliver the provisions to Lucy!" Wendy had almost forgotten about that. She was so busy focusing on the Keyhole that appeared on the door and the mysterious black-cloaked figure that she forgot entirely about Lucy!

"Oh, well… enough wasting time in the Big Cave. Time to go and deliver the provisions. Hopefully she and Natsu are done with their bet…" Wendy still had questions about the Keyhole and the black-cloaked figure, but those can wait. For now, she had to deliver the provisions.

Wendy left the Big Cave and stretched her arms. Now, where was-

"Wendy, there you are!" A familiar voice called out to her.

It was Lucy who ran towards her. "I've been looking for you for a while. Where did you go?" The blonde asked.

"I was searching for mushrooms like you asked. Found one in the Big Cave and two more by the seashore and the obstacle course. Also, I got the rest of the provisions right here." Wendy gave her items to Lucy.

"Good work! You did a nice job today. Find anything interesting in the Big Cave?" Lucy asked, but Wendy shook her head.

The blue-haired girl looked around for any possible sighting of Natsu, but there was none. "Where's Natsu, Lucy?"

"Oh, yeah… about that. Half way during our spar, Natsu had to stop due to a stomach ache or something. He left the play island and went straight home. I sure hope he's okay…" She stated in a concerned tone.

Wendy gave her a nod. "Same here. I hope he'll be okay by tomorrow…" She replied.

Lucy gave her a smile and petted her hair. "I think he'll be okay… Natsu Dragneel isn't as weak as you think." She explained to which the blue-haired girl smiled at her blonde friend.

"I guess you're right, Lucy… so, what do you want to do now?" Wendy asked.

"We've got a couple more hours until the sunset. Wanna help me check up on the raft and divide the provisions?" Lucy asked.

Wendy gave her a nod and the blonde smiled.

"Well, then… let's go!" Both girls started walking towards the obstacle course…

(During the sunset…)

Lucy and Wendy spent the next few hours checking up on the raft and splitting up the provisions for the trip. When the sun was beginning to set, the two girls were watching it at the leaned tree over by the seashore.

"This is it…" Lucy began.

"The moment the three of us have been waiting for." Wendy stated.

Lucy gave her a nod. "Yep. Once we set sail tomorrow, it will be great."

Wendy nodded, but then looked away. "Wendy, are you okay?" The blonde asked.

"Y-yea… I'm just nervous, that's all…" She admitted.

Lucy placed a hand on her shoulder. "As long as we're together, nothing bad will happen."

"Well… I guess. You know… you've changed a lot, Lucy." Wendy admitted to which the blonde was surprised.

"Oh, I have?" Lucy asked.

"Yeah… sorry if I'm being rude." Wendy apologized.

"Nah, you weren't acting rude, Wendy. Don't worry… maybe you have a point." Lucy replied.

"Oh?" Wendy asked.

"At first, I was afraid… but now, I'm ready. I know that I can always come back to Tenrou Island. Right?" She asked her friend.

Wendy nodded in return. "Yeah. We'll come back… someday."

"Good. Wendy, don't ever change. No matter what." Lucy stated to a confused Wendy. "Huh? What do you mean?" The blue-haired girl asked.

"Oh… just talking to myself. That's all." Lucy replied.

Wendy was still confused on what Lucy said, but decided to not question it. The two girls continued watching the sunset for a little while until Lucy stood.

"I'm gonna head home and get some rest. I wanna be rested and prepared for tomorrow after all. You should get some sleep as well, Wendy." Lucy advised her.

Wendy nodded. "You're right. I need all of my energy rested up after all for tomorrow. Shall we?" She pointed at the boats.

The blonde nodded. "We shall. I just can't wait! Once we set sail tomorrow, everything changes…"

Unfortunately as Wendy remembered right… the trip that was supposed to happen tomorrow never came for the blue-haired girl, Lucy and Natsu…

Author's Notes: Whelp, that's the end of the prologue for Kingdom Hearts: Warrior of Tenrou Island. Yep, that's the title I'm going for. Get used to it. You'll be seeing it quite a lot in the story. Well, at least in title box at the story information section.

Also, I would like to thank my beta reader Chirithy564 for reading the prologue and giving me the go ahead to post the first part of Wendy's story. Speaking about her – she is in the process of creating fan art for the story. I await to see what she draws and shows me. Chirithy, take all the time you need for doing the fan art – I'll wait.

Lastly, the cover art has already been drawn. This one was created by Princess2234 from DeviantArt. You'll see it soon enough once I upload the prologue. Also, be sure to respect and give her credit.

Right, enough of that. Time to post this bad boy on – then I'll get back to updating Mina's story and Asuka's as well.

One more thing, I have a new FanFiction account for those of you that don't know. It originally was owned by Xandyflare, but she gave it to me for safe keeping due to not wanting to post her stuff anymore there.

I guess that's everything for now. Be sure to hit that fave and follow button and I'll see you in the next chapter. Bon voyage!

Until next time! Bye!