Well, this is a first, huh? A One Piece and Avatar crossover. And darn it, it's about time! :P As you may know from the description, this fic will basically be about Katara and her adventures with the Straw Hats Pirates and so on(yes, and SO ON.) BUT…..I might put more Avatar characters in later…..you'll never know. ;)

This will be my crossover fic, so I need good feedback on this, let it be interactions, or IC-ness. One last thing to remind you guys…..ROMANCE AND A LOVE TRIANGLE WILL SORT OF BE INVOLVED. 8O

But fear not, I ain't gonna rush it…..just giving you a heads up. ;P But let me say, it AIN'T in this chapter. Xo

Okie-dokie, time to begin! Read and review!(honestly, please do. :( )

Disclaimer: Avatar: The Last Airbender is owned by Brian, Mike and Nick. One Piece is owned by Oda-sensei. :D

Also, the 'dream' sequence was made by the ever so sweet and talented, pretty in green! Thank you so much for helping me with that part! ^_^

(EDITED: 8/12/15)

The Grand Line Waterbender

By The Samurai Prince

CRASH!

The giant whale tried again.

CRAASH!

And again.

CRAAASH!

And again.

CRAAAAASH!

And again some more.

CRASH! CRASH! CRASH! CRASH! CRAAAAAASSSSHHH!

An enormous whale was ramming his forehead into a mountainous rock wall that was submerged underwater. The whale had deep gash slashes on his forehead from ramming into the wall so much. One would think there was something wrong with the poor creature. But believe it or not, the whale was doing this for a purpose.

The whale's name is Laboon. And he was trying to see his human friends again.

Above water and on higher ground, there is a cascading current of water that flowed downstream on a mountain, and on the bottom of each side of land are two lighthouses. In the front of the right lighthouse of the mountain, there stood an elderly man.

He has an odd appearance. The old man has a protruding beard, a balding head with bizarre hair, which looks like he has ten tropical forest leaves circling around the top of it. He has small circled glasses on, a gold chain necklace, two wrists accessories, and a gashed scar on his upper left arm and a small stitched scar on his lower right arm. He has a look of grouchiness on his face, but it is probably just from old age, since he is 71. He was wearing a tropically colored casual shirt, shorts and sandals.

He was standing in front of the lighthouse, looking intent on the noise the whale was making.

'Darn it Laboon, just give it a rest for the day.'

The old man's name is Crocus. He works at the lighthouse to see if any people have crossed the current.

He's also the surrogate, but now permanent owner of the whale Laboon. Try as he might though, he cannot tame Laboon from his constant pounding on the mountain wall.

That is, until that day when Laboon suddenly stopped.

"Huh?" wondered Crocus. He didn't...he wasn't…is he?

"No…Laboon." Crocus said, in a despaired voice.

Laboon would stop his pounding on a daily basis, but Labbon stopped too abruptly and quickly that time. He normally would at least keep pounding on for thirty minutes.

But then, Laboon emerged up.

Crocus was relieved greatly. If he had died, his entire body weight would drag him down to the ocean.

But wait. Why did he stop?

Crocus' answer was what was in front of the gigantic whale.

A girl, rising up from the water, had emerged, and was floating in front of Laboon.

"What? A girl?" murmured Crocus. What was a girl doing out here? And why had she emerged from the water?

Either way, he had to bring this girl to shore and safety.

"Thanks Laboon!" he said to the whale. He replied with small whale noise.

Crocus may be an old man, but he was well fit for his age. So he jumped into the water and swam all the way to where the girl was located. He grabbed her around her waist and dragged her to the ladder that goes up to land, where he climbed up with her slung across his shoulder.

He then put the girl on the ground and quickly checked for a pulse. There was one, but it was faintly there. He then performed CPR, rapidly pushing her stomach to get water out of her lungs, and using mouth to mouth.

While Crocus was saving the girl, the girl herself was in an unconscious dream state…..

Katara stood outside, leaning on the wall of the beach house. She looked up at the full moon and felt its energy coursing through her. She smiled to herself, knowing that tonight would be a great night for water bending.

She sighed and slid down the wall until she was sitting comfortably on the ground. She let her head rest on her knees as she looked out towards the beach, silently thinking to herself. The cool night air provided a lot of relief from the jumbled thoughts that were marring her brain. She breathed in slowly and tried to let her stress leave her as she breathed out. She continued on like that for a while as she listened to the waves crashing against the sand and rocks in the distance. It was a calming setting, and she found it highly therapeutic. She was willing to try anything and everything to relax.

Katara was so caught up in her reverie that she barely noticed her fire bending friend walk outside of the beach house, looking for her. She was able to feel the wood creaking underneath her and immediately looked up at Zuko who was nonchalantly standing against the wall while Katara remained on the ground. Even though she was a little confused as to why he would even consider joining her outside so late at night, she said nothing and turned her head to face forward again. Zuko broke the silence first.

"So what are you doing out here so late?"

Katara shrugged. "I couldn't sleep. I have too much on my mind."

Zuko nodded in agreement. "Everyone's been a little on edge ever since we got back from the Ember Island Player's show. Aang's been tossing and turning a lot. I think that the stress is starting to get to him. I feel bad for the kid," he added.

The mention of the Avatar's name made Katara shift uncomfortably. It didn't go unnoticed by Zuko as he stared down at his water bending friend with a questioning look.

"Are you sure you're okay?" he asked.

Katara bit her lip before she answered. "I guess things have been getting awkward between Aang and I lately." She looked at Zuko and saw that he was listening, so she decided to continue.

"During the intermission at the play…well…Aang kissed me."

Zuko's eyebrows shot up, but he didn't say anything. Katara groaned. "I don't know what to do."

"Well," Zuko started, "what do you think about it? Why are you so worried about it?"

Katara shook her head and sighed. "I don't know. I mean, I'll admit: it was kind of nice. But this isn't the time to be worrying about relationships right now. I was shocked to say the least that he would even think about doing something like that. I don't know if I should be angry, happy, confused, depressed, or something else. My mind's a mess," she finished lamely.

Zuko kneeled down and placed a hand on Katara's shoulder. "You sound like you need to calm down, alright? I'm sure that after this war blows over, you'll have plenty of time to think about Aang and where your relationship stands right now. But you shouldn't rip yourself apart over this. You have to relax, okay?"

Katara cracked a small smile. "I guess."

Zuko nodded. "Stress doesn't suit you. You shouldn't be over thinking this as much as you are. I'm sure everything will work out for you," he assured.

Katara nodded. "I know. But, I still can't stop thinking about him. It's hard not to remember what had happened when I see him every day. But I guess you're right. There are more important things we all have to worry about and it definitely isn't this," she reasoned.

"There we go. Just don't think about him too much. Agreed?"

"Agreed."

After a few minutes of staring out at the beach, Katara stood up and told Zuko that she would be going on a walk around the beach. She promised she wouldn't be out too late so Zuko left her be while he went back inside to get some sleep of his own. She walked along the beach, kicking the sand up with her feet. The ocean sounds were getting louder.

Katara walked for ten minutes before she felt the need to release pent up frustration through bending. Not wanting to go near the shore line and get her nice slippers full of wet sand, Katara looked around for another body of water that they could use in order to practice. She noticed at the end of the beach a small hill that lead towards the other beach houses on Ember Island. At the base of the hill, she saw the mouth of a cave.

Curiosity getting the best of her, Katara trudged through the dry sand towards the opening of cave. Before she stepped inside, she noticed that the cave was probably wet from being so close to the ocean. There had to be a way to bend in here. Water probably congregated in here all of the time. Sure enough, a pool of beautiful blue water was in the center of the cave. Katara smiled as she lifted her hands and began going through her bending exercises.

Water bending was the best release Katara could think of. She concentrated on her hands on the water around her as she pushed and pulled the stream of liquid around her. As she got further in her drills, her head started to feel strange.

She wasn't sure if it was the cave, or maybe it was the sound of the loud waves just outside, but somehow the pool of water in the middle of the cave looked a little more…stunning…as the minutes passed by. As she walked towards the water, she felt her head grow hazier. She wasn't sure why she was walking through the water at the middle of the cave, but something about it was simply hypnotizing. All her previous stress about Aang had melted away. All that mattered was getting closer to the glowing water.

Katara was in waist-deep by now; still surprised by the water she was just bending with, she continued walking in further anyway. The closer she got to the center of the pool, the more her mind was fading in and out. It was getting hard to think and imagine coherent thoughts. But the water was so amazing!

As Katara walked into the water from the neck up, she couldn't remember what had happened next.

She was swirling down into a whirlpool. It was taking her somewhere she couldn't see, for she was unconscious for the most part, letting the water enter her mouth, ears, nostrils and her lungs. She couldn't see that she was being led by a bright light, where a long water serpent looking creature circled the bright light. She entered it...

Katara coughed up water. Lots of it.

"Ah, thank goodness!" said a foreign voice not familiar with Katara.

She sat up and held her throat, coughing a fit. What happened? Why does she suddenly have a mouthful of water? She opened her eyes…

And widen them.

'What in the...?'

She was looking at a vast body of ocean that seems endless. But this didn't look like the beaches of Ember Island.

In fact…she wasn't even on a beach! This looks more like a cliff-side. To her left she can see wide mountain ranges that also seemed endless.

'Wh...where am I?'

"Young lady! Are you alright?" said a gruff voice beside her.

Katara snapped her attention to the source of the voice…and she blinked as her eyes became more widen at what she saw.

There were two things she saw that were quite peculiar. One was the odd looking old man with a very weird bright fashion sense, along with his hair that looks like a bright yellow-purple tropical jungle flower that's around his bald head. The rest of him also looks rather strange.

The second thing she saw that was strange was a GIANT black mound of...something that was in the water in front of her. And on the mound, there were big gash marks on it.

Wait.

There was also round things that were on each side of the giant mound. They look like…

"…eyes?"

She then heard a very strange echoed sound coming from it.

Her eyes widen more in what looked like terror.

The man looked at her, then at the mound. He looked back at her and said "Oh, don't worry. He doesn't bite."

His words fell on deaf ears however, as she only heard 'he won't bite'.

Katara only did the most logical thing when seeing a very giant, foreign creature.

She freaked out and screamed.

The man was taken aback by this outburst. The creature made a noise that sound like he had his feelings hurt.

"W-WHAT IN THE WORLD IS THAT!?" She yelled pointing at the creature, back crawling away from them a bit.

"Hey, calm down!"

"WHO-WHO ARE YOU!?" She pointed at the old man.

"There's no need to panic, just calm-"

"WHAT'S GOING ON!? WHERE IS THIS PLACE!?"

"If you just let me tel-"

"WHY HAVE YOU TAKEN ME HERE!?"

"Taken? I-"

"WHERE ARE MY FRIENDS!?"

Your friends? I don-"

"WHERE AM I!?"

"Just plea-"

"WHERE IS THIS PLACE?! WHY-"

"WILL YOU SHUT UP FOR A SECOND, GIRL!?"

Katara's mouth was instantly shut at the man's louder tone. The creature made a noise indicating that things weren't going quite well. The old man took off his glasses and pinched the bridge of his nose, muttering something like 'I'm getting too old for this'.

Katara just stood her ground. If this man tried anything, she has a body of water near her to command.

"Who are you, and where am I?" she said, calming down her composure.

He put on his glasses and looked at Katara. "This is the thanks I get? Heh, kids these days."

"I said, where am I?" she said in a more demanding tone.

The man muttered 'ungrateful girl' and said. "First of all, my name is Crocus. Second, you're on the Red Line. You're also in the Grand Line."

Katara just look at him like he was crazy. Red Line? Grand Line? Where was that? Is that were she is right now? She hadn't heard anything about these places before. And…what kind of name is Crocus?

Crocus saw her expression. "I'm not lying. That's where you are."

"But…I don't know what those are."

He raised an eyebrow. "You don't? Hmm…where are you from, girl?"

Katara looked and studied him for a second. Although VERY strange looking, he looks pretty elderly. That and he had an honest face. But as she learned from her travels, looks can be very deceiving.

Her mind drifted to Zuko and her in the Crystal Catacombs. Katara shook her head at that long forgotten memory and answered the man. "The South Pole."

Crocus raised an eyebrow. "The South Pole?" The creature on the water made a noise that would indicate he was confused.

Katara jumped at the creature's sound. "Ah! What is that thing?!"

Crocus said, was quite irritated at this girl for calling Laboon a 'thing'. "He's not a thing, he's an island whale! And he was the one who discovered you coming out of the water! His name is Laboon!"

"A-a whale?" She looked at Laboon, who moaned a whale sound. "T-that's…a whale?" she said baffled.

Whales are quite rare in the seas, especially in the South Pole, but…they were never this HUGE. NEVER.(1.)

"Yes, he is." Crocus said.

Katara stood up and marveled at the giant water mammal. This whale could've been fifteen times bigger than Appa! This whale was…enormous!

Crocus cleared his throat loudly to get Katara's attention, in which he did.

"So….the South Pole?

"Um, yeah. Actually, I was with my friends over at Ember Island. I don't know how I-" She stopped as she realized something. "Wait! Did you say you and..."

Crocus blinked. "Um, Laboon."

"Right, did you say you and Laboon get me out of the water. The ocean?"

Crocus nodded. "Yes."

Katara gasped. What was she doing out in the sea, anyways? Last thing she remembered was being in a cave, bending the pool of water in it and…the water…

Katara's eyes widen once more in realization. Could the pool of water in the cave have something to do with where she is? She remembered it being so beautiful... and then she blacked out…

Katara's legs felt weak. Where was she? This didn't look anywhere like Ember Island. She doesn't even know...

…If this is even her world…

Katara looked back at Crocus with an anxious look. "Where part of the world am I in?"

Crocus raised his eyebrows, but noticed her expression of her face. She seemed….lost. "You're…on the Red Line. This is the entrance to the ocean of the Grand Line."

"Where is that!? What nation is that in?!"

Crocus looked at her, astonished. Nation? What is she talking about?

"Well? Earth? Fire? Water? AIR!? Say SOMETHING!" She was panicking now.

Crocus didn't know what to make of this. He was worried, but for the girl. Laboon looked worried also.

Katara just stared at Crocus, gazing at him like he was the one who holds all the answers.

"I…I don't know what you're talking about, young girl." Crocus said to her in a sadden tone.

That was not what Katara wanted to hear.

Time felt like it stopped for her. Here she was, on some mountain shore cliff, on some location that wasn't anywhere on her world, staring at a man that might think she's insane. That and there is huge whale staring back her.

"...No." Her legs gave out, her knees back on the floor again. "No, no, no, no, no, no, no, NO!" She grabbed each side of her head, wanting to feel as if this is all a dream. She wished she could say that, but this feels too real to be a dream. The panic was real, the ocean air smelled real, the wind felt real. It was all too real.

And yet, she didn't know how she got here. This foreign land, this place, this…..other world? She doesn't know!

Crocus was worried. He didn't know what to do. He didn't even know who this girl was and he's already feeling sorry for her. In fact, something about his girl looked peculiar. She looked tanned, almost dark looking, and she's dressed in some sort of unique red outfit that looked a little too revealing for her age – well for him anyway. She must definitely be someplace very foreign, and although he has no idea where she might be from, he has to try to do something to calm her down.

"Look, little lady, maybe you need some rest." That wasn't the correct thing to say at Katara's state.

"I'M NOT CRAZY! I HAVE TO GO BACK HOME!" She shut her eyes to prevent from crying. "Sokka, Suki, Toph, Zuko..." Her eyes opened. "Oh no, Aang! Aang needs me! The others might need me! I have to go BACK!" Katara got up and ran towards the cliff.

"HEY, WHAT ARE YOU DOING!?" Crocus ran after her. Laboon made sound of disapproval.

'I have to go back! I don't care how, but I have to go back!' thought Katara frantically.

But a strong hand grabbed her arm and stopped her.

"NO!" she said as she struggled from Crocus' surprisingly strong one hand grip. The tears started to fall from her eyes. "Let me GO!"

"I don't know what you're doing, but it's SUICIDE if you do what you are about to do!"

"I want to go back! I need to go back! Let go!"

Katara used her other arm to try to push him off, but Crocus quickly grabbed it. He was surprisingly strong for an old man.

"You need to calm down! Maybe I can help you! I'll contact someone of the islands on the Grand Line and-"

"I don't even know what that is! Let…GO!"

Katara was making weird movements her arms, which confused Crocus, as he was the one grabbing them.

Laboon made a loud whale noise, as if was trying to warn Crocus.

Then Crocus experienced something that absolutely blew his mind.

The water was lifting up! Behind Katara and in front of Crocus, water was rising up on the cliff, forming like a serpent.

Crocus loosened his grip on Katara. Bad mistake, as Katara used her arms to direct the tendril and rammed the water on him.

"Gah!" yelled Crocus, and flew back at the force of it, landing roughly and lying on his back.

Katara stop what she was doing and gasped, realizing what she done.

'Oh my gosh!' thought Katara, as she put her hands to her mouth. 'What have I done?'

"C…Crocus?" she said, remembering his name. "Crocus, are you okay?

Laboon made another noise, a sad one at that. Katara looked at Laboon, giving him a look of guilt. "I-I'm sorry, I..."

A groan.

Katara look over Crocus' direction with wide eyes. 'He's okay!'

"Crocus!"

She went over there to check to see he was okay.

She knelt beside him "I am so, so, so sorry! I-I just, I just, I just wanted to go back home and-"

Crocus coughed and sat up. "It's fine! I'm fine!" He coughed up more water. "Right now, all I want to know is how in the world did you do that?"

Katara blinked. "My-my bending?"

"Bending?" he coughed some more. "That's what it's called? It's not a Devil Fruit ability?"

"Huh? A….Devil Fruit? What's that?" Katara said perplexed.

"A Devil Fruit is a cursed fruit that can grant any person any type of power if anyone eats it. But the downside is, is that anyone who devours it, will lose their ability to swim, making them sink like anchors."

Katara blinked. "Um…..okay…."

Crocus chuckled. "You're really not from around here, are you, Miss?" He said while getting up, along with Katara, trying to help him stand, but Crocus kindly declined against it.

"Um…no. I guess I'm not." She said, lowering her head down.

"Heh heh! Well then, where are you from, really? Another world?" Crocus said good-naturedly with a smirk.

Katara raised her head up to look at Crocus in surprise.

"Hmm. That seems to answer my question." He grinned.

"Wait…so, you don't think I'm crazy?"

"Well, it's not like everyday I see a strangely dressed girl rising up in the water, not knowing what the Grand Line is, and talking about nations of fire, water, earth, and air."

Katara just stared at him in puzzlement. "Wait…but…"

"Don't worry about it, girl. There are stranger things in these waters, and this would probably take the cake!" He laughed.

Katara was dumbfounded. What kind of world is this? Better yet, why was she here? Did the Spirits have something to do with this? And why, of all times, was she here now, when they were about to face the Fire Lord at the coming of the comet? She doesn't know….

"Hey."

Katara snapped her attention back to Crocus.

"Don't do that again. Jumping back in these waters will do nothing. I doubt what you were doing will return you to where you came from."

The words struck her heart painfully. But at the same time...what she did was pretty foolish.

"I'm sorry." She said in sadly, the tears forming again.

"Hey. Don't cry. Be strong, little girl." He said reassuringly

"I'll…I'll try." She said, feeling a little better at the man's support of words.

Crocus smiled warmly. Laboon whined reassuringly as well.

Katara remembered about Laboon and what he did, and turned around and said "Oh, sorry, Laboon! Thank you very much! And I'm sorry I got…well…crazy." she smiled sheepishly.

Laboon made a noise that would translate as a 'that's okay'.

Katara also turned to Crocus and gave her thanks to him for saving her. Crocus smiled and said 'you're welcome'.

"Well…I don't know what to do now. I mean…there's nowhere else for me to go." 'I just pray to the Spirits Aang, Zuko and the others won't be worried about me and carry out saving the world. Until I realize how I'm going to get back, there is nothing for me to do...'

Crocus had a thoughtful look on his face. "Hmm…there are mysteries around this world, so all I can say is, is to find some other mystical haven to bring you back."

Katara looked solemn. How is she gonna find some other pool full of enchanting water and go back?

Crocus saw her expression and said. "Hey, look. If you entered here, there's gotta be a way you can enter back to your world. Plan and simple."

Katara appreciate this man's optimism – and she KNOWS optimism – but right now, her optimism is being shot down at this point. She just hopes and prays that the gang won't panic and find her. They have a world to save. And right now, she's in a different one.

Crocus then said "Hey, I haven't gotten you name. What is it?"

She snapped out on what she was thinking and said, "My name is Katara."

"Katara? That's a nice name. Well, Katara, how about you stay at the lighthouse for a while?"

"Lighthouse?" She looked up to see another cliff with a slightly tall structure that looks almost modern to her. "You mean that thing?"

"Yep. I have a spare room in there if you want to have it."

"Well…okay." She said smiling a bit. "But why is it called a lighthouse?" (2.)

Crocus blinked. 'This girl's world must not be advanced.' He chuckled. "You'll have to see at night."

Katara raised an eyebrow on that statement. "Um…alright."

Katara then followed Crocus to the latter that led to his house. Laboon whined happily seeing that the girl was going to stay for a while. Crocus smiled at this 'Well, it seems Laboon is quite happy with our new guest.'

"I'm quite curious though; what is bending?"

Katara thought about it while walking to the latter. "Well...it's kinda complicated. I'll explain it when we reach to your house." She said.

Crocus grinned, "Sounds good to me."

(End Chapter)

1. I don't know if whales or a hybrid of whales exist in the Avatar world. Can someone tell me?

2. Was there ever a lighthouse in Avatar?

I hope this looks good enough to read. I honestly do. I hope I got the real life situations down and have the characters (even Laboon) IC. And I hope the interactions were good, too. Heck, I hope this story was good for ya even!

And I know I might have some grammatical errors in this as well, so if someone could be a beta for this story, it would be most appreciated, along with answering those two questions. :)

Please review and give me good feedback! :D

And I have to say one more time, thanks 'pretty in green' for your help! X)