And Edited again.

Edited! I added a fair bit to it because I realised that I didn't put enough information in to it. I even added dates! Actual ones for the Harry Potter timeline and _ years later, for the One Piece timeline.

Disclaimer; I own neither One Piece nor Harry Potter.

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1980

James and Lily Potter loved children. Ever since they had gotten married they had hoped to hear that Lily was pregnant. They were heartbroken to later learn from a doctor that Lily was incapable of producing children.

When one of their close friends had put out the idea of adoption, their hearts mended just a little bit. They of course would have a hard time finding a child. There were no orphanages in the wizarding world and if they wanted to have a child who could grow up to wield magic they would have to find a muggle child born with magic.

With hope in their hearts they began their search for a child.

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Dadan and the other mountain bandits were in a panic. They were utterly terrified for their lives as of now.

How could so many people, all fit into a fairly small space loose one little child who could barely walk?

Garp was going to kill them. They would be lucky if he let the Marines have them, no, they couldn't imagine what he would do to find that his adoptive grandchild was missing.

Later on that day

Their hearts almost stopped when they got a letter from Garp, delivered courtesy of a mail pigeon. They had been hopping that maybe he wouldn't come for a visit for a while and that they could find Ace before then. But a letter almost always announced that Garp was coming, the only other time that a letter from him hadn't resulted in a visit was a threatening letter shortly after the got stuck with Ace reminding them what would happen if his grandchild was harmed or conveniently forgotten out in the forest.

Relief swept through the masses of panicked bandits when the letter announced that Garp was tied up in a bunch of Marine business that he had to attend to and wouldn't be able to come back for over a year. Something about an extended mission and then being stuck at one of the newer bases to help get it running. They didn't really care though, as long as he was gone long enough for them to find his grandson they were happy.

So now they had a year to find Ace. And really, how hard could it be? Unless he had already been eaten by the numerous animals that lived on the forest. There were a lot of those.

Yes, Garp was definitely going to have their heads on a platter for this.

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November 1880

"Look at this one James!" Lily squealed from where she stood leaning over one of the numerous cribs in the nursery.

The little baby had a mop of black hair and the cutest freckles splattered across his chubby baby cheeks. Surprisingly he was a fairly quiet baby. Not silent, but not screaming his head off like some of the others.

James crept closer to the baby and was ecstatic to feel the soft hum of magic radiating off the small baby.

"We'll take him." Lilly said to the nurse who was working at the orphanage.

"Let's name him Harry," James said to his beaming wife. "Hello Harry James Potter, we're your new parents." He said to the baby, his now christened son.

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Lilly sat with Harry while James filled out the paperwork for his adoption. Lily was almost in tears when the nurses had told them how he had been found almost a week ago.

Apparently he had been brought in by an elderly women who had found him just sitting in an old, musty alley behind a pub. He had just been sitting there in an overturned garbage can picking at the spilt broken bottles and waste from the bar. He had been a little on the malnourished side but they were both assured that he was fine now and that there wasn't any lasting damage.

They had talked about it before hand and decided that while they wouldn't hide it from him or anyone if asked, they weren't going to call themselves Harry's adoptive parents. He was their child, and would be raised as such. No one needed to know any different.

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Mid 1881

The Dark Lord wreaked havoc on the British wizarding world. He was strong, powerful, he believed he could never be beaten. Then one of his followers brought him news of a prophecy. One that could kill him, end his reign of terror once and for all.

He had to find him, this child, born to the parents who defied him, and kill him.

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October 31st 1881

Ace watched as the nice people who looked after him were killed. He felt tears well up in his eyes. They had been nice, nicer than those other people that he couldn't remember too much that had taken care of him when he was just a baby. They hadn't been bad really, it's just that these people payed way more attention to him and doted on him. It was a nice feeling.

The other person in the room pointed a stick at him and was talking about killing him. He was using big words that Harry didn't understand, prophecy and such. He did know that he was a bit scared of the man, he wasn't as scary as that giant orange furry animal that almost ate him that one time, but still.

"Avada Kedavra" Hissed the man, a bright green light erupting from the stick.

When the light dissipated both Ace and the Dark Lord were gone.

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A year and a month after the disappearance of Portgas D Ace

One day, quite a while after the bandits stopped looking for him, Ace showed up at their front door.

The bandit who had opened the door just about had a heart attack. There was their charge; little Ace, calmly sitting on their doorstep. He looked perfectly fine, no missing limbs, gouged out eyes or even serious wounds. In fact he seemed to be in better health than when he disappeared.

The only thing out of the ordinary was the strange lightning bolt shaped scar on his forehead, but even it didn't seem very serious. Though it never seemed to fully fade away, it healed nicely and didn't get infected.

The next day Garp showed up to a mass of bandits . The bandits were never so relieved in their life that Ace had shown up when he did.

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Ace age Twelve

Ace and Luffy ran through the massive forest that was their home. After spending the better part of the afternoon in Gray Terminal they were bringing back whatever they had found or stolen to their tree house.

Luffy had the smallest amount of the two of them. But because of his small stature it was still really heavy for him. When the got to their tree house he was happy to drop the heavy sack.

"Careful Lu!" Ace warned from the door.

But his warning was too late and the bag that Luffy dropped banged against the netting holding the three sake cups. It fell off its nail and hit the ground.

Luffy's eyes widened and he and Ace rushed to see if they had broke.

He felt tears in his eyes, threatening to burst out. But he tried his best to hold them in.

Standing back up Ace held in his hand one of the cups, a good quarter of the side broken off.

"I'm sorry!" Luffy gulped out. He hadn't meant to! He just put the bag down and was being careless and…

He swore that steam was rising from Ace. But that wouldn't be possible, unless Ace was made of water. Or fire. That would be so cool if Ace was made of fire, just not as cool as rubber, Luffy thought.

"…" Ace began to say something but at that moment his narcolepsy decided to save Luffy from the momentary beating.

With tears still in his eyes Luffy bent down and picked up the sake cup, maybe he could fix it.

Instead he found an entire cup. He looked at the other two and both were whole and unscathed. Quickly he hung them back up.

Ace has a mystery power, Luffy decided.

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Fourteen years later ~ set in the summer before the fifth book

Dumbledore peered through his glasses at the small black hair that he held between his fingers. In his other hand he had his wand, while on his desk opened to a marked page sat an old, thick, leather bound book. The summoning spell had taken quite some time to find and then it had said that you needed DNA to summon the person.

Finally he had found a piece of hair of Harry's. It was stuck to the old invisibility cloak that had just recently fallen into his possession. He remembered seeing pictures of Lily chasing a half invisible Harry around, when he had just learnt to walk. There was a possibility that this was James's hair, in that case nothing would happen, or maybe a rotted corpse might be pulled into his office.

Eh, the risks were worth it if it meant the possibility of bringing Harry back.

For Dumbledore's plans to work he needed Harry Potter; the boy who lived.

Slowly he began the process for the spell.

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Seventeen years after Ace got back to the One Piece dimension

The Moby Dick was full of life, currently the crew was seeing what amounted to a beautiful day in the New World. The sun was out, the waters more or less calm and the hordes of Marines and other pirates trying to attack them had finally came to a temporary stand still.

Ace was walking along the deck, whistling happily. It had been around A year and a half since he joined the Whitebeard pirates and only a few month since he had been made the second division commander.

Twack.

Scowling, Ace looked at the wall that he just bumped into. Usually he was fairly graceful on board a ship even if it was sailing in a very unpredictable sea. Slowly the room corridor started turning, spinning around as his vision started to fade to black.

The crew didn't pay him much mind either. They glanced his way to make sure he wasn't going to fall into the water and then went back to their work. They had long since gotten used to his narcolepsy and dropping 'dead' at every other meal.

Except that this wasn't his narcolepsy. He knew what it felt like when he was going to have an attack and this wasn't it.

"Something's wrong…" he mumbled to himself as his vision went entirely black.

As Ace blacked out and fell to the ground he reached out trying to steady himself and grasped the closest persons arm.

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So Ace was about one when he disappeared from OP, because he was raised by mountain bandits who I can't see getting baby formula or proper baby food for him, he was a bit malnourished and small so the orphanage thought that he was younger than he actually was. He stayed with the Potters for around a year until Voldemort attacked because of the prophecy and then Ace disappears along with Voldemort. Ace goes back to the OP world where it's been around a year and a couple months since he disappeared. Garp hasn't visited in all that time and never knows a about Ace disappearing.

Anyway, I need your guy's opinions. Who should come with Ace? I originally wanted Marco to go, because of all the Phoenix joke that I could do when they see Fawkes. But then what would happen to the Moby Dick with out its first division commander there to keep it from falling apart? So I was thinking maybe Thatch, or Izo, maybe Haruta. I would most likely only have one person come along, maybe two and it has to be someone from Whitebeard's crew, so if you have any opinions on who it should be please leave it in a review or PM. I seriously can't decide so I need your guy's help please.

Thanks for reading. If you have any questions PM or review and I'll try my best to answer them.