My first ever crossover! And the first Warriors x One Piece Crossover! I really hope you guys all like it, and I apologize in advance for an OOC or grammatical errors. Also, don't expect all chapters to be this long.

Disclaimer: I don't own One Piece or Warriors.

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Chapter 1

Luffy was perched on the figurehead of the Thousand Sunny, looking out into the seas of the New World. Dressrosa had been difficult to escape from, but after beating the Donquixote Pirates and saving the living toys, the crew was in good spirits, and ready to go onto the next island.

A shout could be heard from the deck; it was Nami announcing the appearance of a nearby island. Luffy jumped up, his red vest billowing in the steady breeze. He lifted his hand to his forehead and squinted. "I see it! I see it!" he yelled, leaping down onto the deck. "Let's gooo!"

Zoro's eyes blinked open, he grumbled after being woken up from a particularly nice nap. "Oi, what was that for?"

"Zoro! There's an island up ahead!" shouted Luffy.

"Quit being so loud. I'm going back to sleep for a bit. Tell me when we get there." Zoro shut his eyes and a moment later let out a loud snore. Luffy laughed, and turned to Nami.

"When are we going to get there?" he asked excitedly. He was obviously looking for a good adventure.

Right before she was about to reply, the kitchen door swung open. "Nami-swaan! Robin-chwaan! I made you some fruit tarts and tea! ~" It wasn't hard to tell who that was. Nami took the food, and nodded her thanks, and sent Sanji away swooning.

"So, as I was about to say, we're going to be there in about two hours, if the wind keeps up like this." She looked down at the Log Pose. "Thankfully, since I got to pick this time, this island should be relatively safe."

Luffy pouted, "But I want to go on an adventure!"

"You still can, albeit a safe one." Nami said. "We're only going to restock supplies though, so do not get into any trouble." Nami glared at Luffy.

Luffy shrunk back, frightened, "I'll try!" he said soon after, then stretched his arms so he could land himself back on his special seat.

~Two hours later~

Luffy jumped down from the Thousand Sunny, looking around at the rather plain island. This kind of calm was rare in the New World. "This place looks boring." He stated.

Chopper, Nami, Usopp, Sanji, and Zoro soon followed, with the latter two bickering over something. Chopper pointed toward the village. "I'm going there, I'm hoping to pick up some medical books on some New World techniques."

Nami nodded, "That should be fine."

For once, Usopp wasn't scared of an island. "Don't worry everyone! If something tries to eat us, I'll fight it off single handedly!"

The stock gathering party looked up. Franky called down to them. "Could you guys grab some ship supplies while you're down there? I just had a great idea for an addition to the Sunny!"

They nodded. Sanji stopped fighting Zoro for a second, leaving the swordsman seething. "Robin-chwaan!~ Do you want anything special to eat!~" He called up to her. Robin put down the book she was reading and walked up to the side of the Sunny, "Could you perhaps get me some coffee?"

Sanji swooned, "Of course Robin-chwaan!~"

Robin laughed, then returned to her book. They could hear a song coming from the deck.

Farewell, my dear friends~

I sure hope you don't meet your ends~

Sang Brook. They laughed, and bid their crewmates farewell. In a minute or two they were outside the town.

Before any of them were even allowed to enter, Nami ordered, "We're notorious pirates now, so I want you to all wear disguises like we did in Dressrosa. And don't draw attention to yourselves, we are only here for supplies." She looked at the group sternly.

They obliged, each pulling out a fake beard and mustache from who-knows-where, and putting them on. Nami tied up her hair and then put a blue wig on, as well as a short cardigan to hide her tattoo. "Now let's go."

Each Straw Hat headed their separate ways, except for Zoro, who was forced to tag along with Chopper so he wouldn't get lost. He had argued bitterly, but Nami's iron fist got the better of him. This was followed by much insulting on Sanji's part, who was quickly cut off with another of Nami's punches.

Luffy was starving, and decided to go get some meat, since Nami said he couldn't make any trouble. He stopped at a promising restaurant called "Meat and more." Of course it got Luffy's attention.

He burst in, and sat down at a table, pounding his fist on it. "Give me meat!" he yelled to a nearby waiter. The waiter looked at him, rather startled, but obliged. Within half-an-hour 20 heaping plates of meat were in front of him, and in half that time they were wiped clean. The whole place looked at him, stunned. And he just shouted for more.

This time it was taking too long, and Luffy heard something interesting being said about the island.

"…apparently there's this huge cave in the middle of the island, and anyone who goes in never comes out." Said a burly man with a gruff voice.

"Yeah. Didn't someone say there was a monster in there?" replied a younger, slightly thinner man with a low voice.

"Uh-huh." Said the burly man.

Luffy heard the door open, and Nami, Usopp, and Sanji were there, each laden with bags. "I knew he would be in here." Said Usopp.

"Hey guys!" greeted Luffy, "Just wait a bit, my meat's almost here!"

Nami suddenly put a finger to her lips, shushing the present Straw Hats.

"…guarding a massive crystal which is said to contain the light of the moon." Finished the young man.

Nami, walked up to the two men, shoving the bags into Sanji and Usopp's arms. "So where is this crystal?" she asked, her eyes the shape of Beli symbols.

"Why would you want to know that? You do know that no one who has ever been there has ever returned." Said the burly man.

She slammed her fist onto their table. "Who cares? Tell me where the money—I mean—crystal, is."

"Uhh…" the burly man said, eyes wide. "The very center of the island. Ya can't miss it."

Luffy jumped up. "I want to go! Adventure!" he turned to Nami. "Can we please?"

Nami nodded, "Of course! When money's involved, I'm there!"

Usopp's legs were shaking. "I think my I-can't-go-into-the-scary-cave-disease is acting up again!"

Sanji swooned. "I'll go anywhere with you Nami-swaan!"

"Well, were going now! Bye!" she grabbed the three men by the ears and pulled them out.

"But my meat!" pouted Luffy, staring longingly at the restaurant.

That same instant, the owner of the place yelled. "Hey you beard-man! You didn't pay for your meal!" Nami ignored him and commanded the men to run away as fast as possible.

"Where are Zoro and Chopper?" asked Luffy after they were far, far away from the restaurant.

Sanji lit his cigarette, "If I know anything, that shitty marimo got lost and dragged Chopper along with him."

Nami nodded, "They could be anywhere right now. We may as well look, we need their muscle to find that crystal."

The small group of Straw Hats headed on their way to find Zoro and Chopper. It took a while, but they found the two on a random mini-island in the center of a large river. Who even knows how they got there.

Luffy pumped his fist in the air. "Time to go to the mystery cave!"

Chopper's eyes sparkled. "Wow! A giant crystal! With the moon's light? Is it real?"

"Of course it's real Chopper, and we're going to find it, and make some big bucks." Said Nami, her eyes yet again in the shape of Beli's.

Nami pulled out a map of the island she had purchased, and laid it down on the ground. "We're here." She pointed to the river near the edge of the island. "If those men were to be trusted, the treasure is here." She put her finger on the very center of the island. "It should take three or four hours to get there if we hurry."

The other Straw Hats nodded, Luffy and Chopper's eyes shining. Usopp was quivering, obviously quite scared of going to the cave. Sanji was swooning over Nami and how smart she was, and Zoro looked like he wanted to slice his head off.

Nami stood up. "What are you waiting for, let's go!" The four men and reindeer nodded, standing up, ready for a grand adventure.

~Three or four hours later~

After much trudging through the forest, and much searching around for Zoro, the Straw Hats had made it to the mouth of a large cave, on a sheer cliff side.

"I can't go in! I have I'll-die-if-I-go-into-the-cave-disease!" said Usopp, teeth chattering.

"Come on! It'll be fun!" said Luffy, looking into the pitch black cave, not the least bit afraid.

Sanji and Zoro were fighting. "I bet you'll get lost Moss-head!"

"No way Ero-cook!"

Nami was forced to break it up after a few minutes. "WE have to go get the treasure now. Chopper, you lead the way. You should be able to lead us with your sense of smell. And someone, please keep an eye on Zoro, I don't want him ending up lost somewhere."

So then they entered the cave. It was a long, windy path, and pitch black at that. Usopp had to keep using his Fire bird stars to allow them to see. They began seeing moonlight filtering through, but before they could rejoice a monstrous roar shook the cave, causing a shower of stones and other random bits and pieces to fall from the ceiling.

"What was that?" said Nami, looking around warily. "Luffy, Zoro, Sanji, go beat whatever is in there up, and then come get us."

Zoro and Luffy nodded, while Sanji swooned, earning a punch to the head. The monster trio headed into a larger cave, gleaming with the light of the waxing gibbous moon. "Wow!" said, Luffy, eyes glimmering, even after a giant, hairy hand had bashed him over the head. Zoro and Sanji got into attack positions, and sprang upon the monster. It wasn't all that big itself, but had massive fists and muddy green fur. And it had the head of a cat. It really didn't seem all that strong at all any ways, so it was promptly defeated by the Monster trio.

"Well that was no fun at all." Said Zoro, "I thought no one ever returned after coming in here." But no one was listening. Luffy was admiring the crystal, while Sanji had gone to get Nami, Usopp, and Chopper. When those three entered, Nami had immediately gone to admire the crystal, at the same time calculating its worth in Beli. Chopper and Usopp were admiring it next to Luffy. Sanji was following Nami around, complementing her on how good she was with treasure. Zoro had fallen asleep, his back to the crystal.

Everyone paused as a sour smelling gas filled the room. Within moments, the rest of them were also asleep, slumped atop the crystal in various configurations. If someone had been there watching them, they would have seen the Straw Hats shrinking and growing fur.

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So what did you all think? Were the characters in character or not? It would be very helpful if you could give me tips on this. Reviews and constructive criticism are recommended! The warrior cats will appear in the next chapter, so look forward to that!