A/N: Welcome! Especially to my author alert followers, finally the day has arrived that I'm posting my alternate version of Pirate Potter.

Disclaimer: I own nothing of Harry Potter or One Piece in this chapter and all chapters following. Plz to not sue - kthxbai

Prologue

Harry Potter, green-eyed, black-haired, Savior extraordinaire of the Wizarding World stood silently on the grounds of Hogwarts. It was not yet dawn and the young man was staring up at the fading stars through his thin-framed spectacles, his black robes and cloak billowing softly in the morning breeze.

In a few hours the witches and wizards of the United Kingdom would wake up to celebrate the fifth anniversary of the fall of Voldemort. Harry glanced down at the ritual circle he had carved around his feet – it would be best if he left before anyone saw him.

Wielding his wand, he softly chanted, his magical focus releasing streamers of white light spelling out an archaic language as it spilled from its master's lips.

There was no dramatic flash of light. Rather, the glow of the words and the ritual circle collapsed upon Harry, leaving nothing behind as the magic dissipated in the morning mist.

The flash came with Harry's arrival as his feet landed on stone steps in front of a building with traditional oriental architecture surrounded by skyscrapers. Judging from the position of the sun, it was mid-afternoon here and the pale Englishman was grateful for the shade the shop cast over him.

Pushing the door open with a gloved hand, a small bell chimed lightly to alert the shop owner of his presence.

The place looked like a cluttered antique shop dumped its wares in a thrift store. Piles of goods were scattered on tables, countertops, and on the shelved walls, some obviously valuable while others looked quite tattered.

From around the corner two children skipped over, hand in hand, expressionless but wide-eyed.

"A customer," the red-headed one stated.

"Yes, a customer, how exciting," echoed the one with blue hair.

Harry stared down at them, bemused. For some reason, he didn't think they were really children. As a matter of fact, he was quite sure they weren't human. Humans went catatonic without a soul, as demonstrated quite often by victims of the Dementor's kiss.

"Don't just stare," a female voice called out. "Welcome him."

"Welcome," the two small beings chorused, faces lighting up with cheeky mischief.

Harry smirked at their adorableness. "Thank you," he replied.

"Welcome, indeed," came the woman's voice again, drawing closer as it paired with the light padding of bare footsteps. "Welcome to my shop, young wizard."

A Japanese witch glided into the room, long, layered black hair streaming down her back, accenting her tall and slim figure clothed in a simple autumn themed kimono. Her lightly painted face showed an age much younger than her power indicated to Harry's magic, but perhaps that wasn't too surprising considering just who she was.

"My, my," Harry shook his head, "what a striking image you present, Dimensional Witch. A pity the surroundings do you no justice," he nodded at a precarious tower of tea cups, the top one of which chose that particular moment to topple over and crash onto the floor. Raising an eyebrow when the cup failed to shatter, Harry bent over to pick it up. Not a crack.

"I do not clean," the shop owner stated imperiously.

"Not even with magic?"

She pouted.

"I see," Harry chuckled. "The power to travel between dimensions and across timelines, yet not a single cleaning charm in your arsenal."

The woman swept her hair back fluidly with her right hand and moved the conversation along.

"You aren't here to compare spells, Master of Death. This is a shop for wishes and I am here to grant yours."

"For a price, right?" Harry clarified, continuing to examine the tea cup. He released tendrils of silky, white magic from his fingertips that swirled through the vessel's walls and flowed upwards tinged with colors and patterned with textures.

"Normally I'd agree with you," the witch sighed, eyeing the swirls of magic with interest.

"Normally, Ms. Witch?"

"Call me Yuuko," she smiled, "and yes, normally. However, your wish has already been paid off by a power from your world. You didn't really believe that your title is merely the mark of a simple collector, did you?"

Harry chuckled. "I must confess, Yuuko, it didn't occur to me that collecting the Deathly Hallows would grant me a wish of any sort."

"It doesn't grant a wish; this is a repayment," she explained, pulling out a long, elegantly decorated pipe from her sleeve and subtly lighting it with a spark of magic. "Tom Marvolo Riddle was written down to die the night of your second Halloween but Death failed. You later succeeded where he did not, which isn't quite so rare an event in and of itself. However, you had already claimed your title beforehand, thus the action was done in the name Death as his Master, and Death became indebted to you."

A long exhale of smoke swirled around in delicate clouds and streaks in the air as the witch gazed out a window with a serious expression on her face before turning back to glance at Harry, a cheeky little angle of the head highlighted with a knowing smirk on her face.

"How, lucky, for you, that things happened as they did."

"Lucky, so lucky!" twittered the soulless children as they skipped circles around the conversing magicians.

Harry snorted. He flicked his wand and sent a stream of water into the tea cup. Immediately, the liquid darkened to an amber color and steam rose from it.

"You are a believer in fate, then?" the wizard asked, taking a sip from the cup with a pleased expression. He had been quite happy when, after deciphering the imprinted magic, he found that the object's main purpose was to transfigure any liquid placed inside into tea. It would certainly be useful against any future poisoning attempts.

"And you are not?"

"Forgive me if I prefer to delude myself into believing that not everything in life is destined. After my life, it's easier to think I have incredibly bad luck than to blame a higher power. I might go insane with an obsession for vengeance. Now, what is this wish that has already been bought for me?"

Yuuko gave into the changed subject with another puff of smoke before wandering through the room, searching. From under a large pile of clothes, she tugged out a small metal talisman and walked back towards Harry, ignoring the small avalanche she triggered.

"This," she explained, "is a one-way ticket to a new world. The magic necessary to activate it will have to come from you, however. Dimensional travel is a very expensive wish, so I'm sure you'll understand that I can only supply you with the bare basic means."

"Not a problem," Harry replied, accepting the trinket and weaving a thread of magic to conjure some twine for it before pulling it over his head like a necklace. It was a very simple metal circle, engraved with a triangle with small symbols overlaying the corners: an eye, a shield, and a crown.

"Can you tell me anything about this world?" Harry asked.

"Well now…" Yuuko hummed, "shall we do an information trade? I am not expecting any more customers today."

"What do you have in mind?"

"That cup," Yuuko pointed, "how did you know what it could do?"

"This?" Harry asked, staring down at the now empty tea cup. "It was a gift, one of many, to loosen the constraints on my magic. Neutral magic has a tendency to take on the affinities of magic it encounters. Once it does, it is merely a matter of reading the resulting colors and textures in order to know what spells and enchantments are present on the object or in the area of your interest."

"You didn't gain it through a ritual?" the witch inquired hopefully.

"Afraid not," Harry replied, "it's something that can only be given from person to person."

"Pity," Yuuko sulked, "if it were from a ritual I could give myself the same ability. As for your question, it is a world without magic. Instead, people are born with a power called Haki that is unlocked and harnessed with the strength of their will and ambition. The Color of Observation allows one to sense the presence of others around them and, when properly trained, can be used to size up an opponent's strength and predict their movements in a fight. The Color of Armaments hardens its user's body for obvious defensive purposes but also with devastating offensive possibilities. The final form, the Color of the Conquering King, is gifted to only a select few and is a means of imposing one's will on others. Creatures with simple minds can be tamed and humans with weak wills can be knocked unconscious with this unique form."

Yuuko took another puff from her pipe and leaned against the wall, a leg extended out from the slit in her kimono to rest on a cluttered table.

"Why did you wish to leave your world?"

Harry refilled the tea cup with a silent Aguamenti. "There was nothing left for me there."

"Oh yes," Yuuko smiled, "the Man-Who-Conquered. Rather appropriate, considering just how many you conquered in the mere five years after 'graduating' from your magical education. So it was fear that led you to me, fear of your own power left unchecked in a world where humanity ran out of problems to label evil. Fear that you might become what you fought against. Am I right?"

Harry peered over the edge of the tea cup as he drank, eyeing the revealed leg appreciatively as he hummed noncommittally in reply.

"The world you are going to," Yuuko continued, "is mostly ocean with scattered islands. On the seas sail merchants, marines, and pirates. One ocean, known as the Grand Line, circles the globe and is filled with the supernatural. In particular, one can find Devil Fruits there which grant its consumer a change in his or her body in return for a connection to the sea that drains the person's strength when in a large body of water. The change covers a wide range of possibilities, such as the ability to change into an animal fully or partially, the ability to change their body into an element which can be used as a weapon, or something as random as the ability to create swamps or ghosts or bubbles."

"How strange. And it's not magic, you say?"

"No," the witch confirmed. "Shall I continue?"

"I'd rather you didn't, actually," Harry admitted, walking closer to Yuuko. "It won't be quite as fun if I don't do a little a exploring of my own."

Yuuko chuckled. "There'll be plenty to conquer."

He drew nearer to the beautiful woman, bypassing the swirling smoke.

"So long then Yuuko, the Dimensional Witch who cannot clean."

"I'll have a maid in a few more years," she retorted.

"Oh? Then, until that foreseen time comes, Ms. Seer," Harry teased, before leaning over and stealing a kiss as he activated his necklace and disappeared.

"What an arrogant little boy," the Dimensional Witch observed.

"Arrogant, so arrogant!" chimed her dolls as she crouched down to give them both a kiss.

"Now let's see," she thought aloud, eyeing the empty room before her, then taking a peak at the storeroom now neatly stocked with all her goods in organized compartments. "I suppose this is payment for the kiss. As for the cup he took with him," she reached out to grab a scroll from a shelf. From her fingertips swirled silky white magic that flowed through the parchment and coagulated on the other side a mess of black and red tangles. "Such a nice gift. It will certainly make inventory much easier from now on."

A/N: I hope you enjoyed it :) Uber thanks go to my beta, Indifferent Nobody, for all her help fixing grammar/spelling mistakes and pointing out places that aren't as clear to the reader as is clear to the writer.

It's June, 25, 2011, and the story begins!