DarkSpartan96: Hello reader's this is my first attempt at a crossover but using Obito as the main character so let's give it a chance.

Summary: Obito/Tobi did his best to proceed with his and Madara's plan but fail's but suddenly he awakes in a new world that's not his.

Disclaimer: I do not own Naruto or One Piece

Intro

Obito couldn't believe it this brat Naruto Uzumaki the Jinchuuriki of the Nine Tail's has beaten him not only him but The original Madara Uchiha and the imperfect Ten-Tail's. All he wanted was the Infinite Tsukuyomi (The Eye Moon Plan) a Genjutsu on the entire world where a reality with no war, no hatred, no pain the way it should have alway's been so no one had to go through the things he had too and most importantly bring back Rin. Obito and Madara battled against the entire Shinobi Alliance with the help of two Jinchuuriki and the previous Hokage's and the current Kage's who was healed after the fight with Madara earlier. Even with the imperfect Ten-Tail's the Alliance was able to combine their Jutsu's together and was able to trap it and with the help of Hashirama the First Hokage he used his power to suppress the beast power making it useless as Obito and Madara fought together with their abilities his Kamui and Madara's Eternal Mangekyo Sharingan they were able to hold off their enemies' only for so long.

Madara used his Susanoo's final form and fought against the Kage's but with the help of Hashirama they were an equal even like before the afterlife and with the Edo Tensei (Summoning: Impure World Reincarnation) the battle between them could have gone for day's but with the other reincarnated Hokage's and current Kage's it became somewhat difficult since they knew each other's abilities and how they thought the same so eventually he got sealed away leaving Obito to struggle against his foe's and old allies' and he felt his chakara started to deplete since he has been using his Kamui for him to become intangible even with the help of Hashirama's cell's.

He needed to become the Jinchuuriki of the Ten-Tail's to make the plan work but now with him just facing the entire Shinobi force alone he didn't know but just to proceed with the plan even though the chances was against him this is all he knew this is what everything was for. He used his Kamui to travel through his dimension and then teleported on top of the subdued beast and was about to use the seal to become a Jinchuuriki but everything started shake as the beast let out a roar and started to glow into a white flash making everyone to cover their eye's. Obito knew what happened since the beast was not complete and tried to go into its final form it became unstable before he knew it everything started fade away and turn into a black void for him and he started wonder was this death? He heard from his former Akatsuki member's that when they died it was like a blink of an eye maybe this was it so he closed his eye's and recalled everything that has happened to him and before he knew it the darkness took over.

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Chapter 1 New World

He felt himself waking up from his dark slumber expecting to wake up to his darkness void but instead he woke up staring up to a bright blue sky filled with cloud's and hearing a sound of an ocean nearby he groaned as he tried to get up through the pain but succeeded netherless and checked his surrounding's with his Sharingan and Rinnegan to see if anybody was nearby but couldn't find no Chakara strange but he could detect normal civilian's nearby he thought as he gritted his teeth through the pain that still coursed through his body from the battle's between Kakashi and Naruto. He looked down and saw he was still wearing his War uniform as his right sleeve has been torn off due to Naruto's Rasengan and his mask being shattered to pieces by the same technique.

He started to wonder what happened didn't he died? What happened to the Shinobi Alliance? What happened to the Ten-Tail's did it separate back into the Bijuu's? He didn't know but he felt though this wasn't a place he knew and he needed answer's but first he needed to change so he used his Kamui to teleport him to his own dimension where he kept his supplies' at like clothing or weapon's he even had a small lab there incase he would lose a limb such as his arm. Once he entered the dimension he went through the stuff he had stored there putting on a black long-sleeve top that also covered half of his face (Imagine Kakashi's shirt but black instead of blue) a pair of black gloves, and a pair of dark coloured pants along with the standard Akatsuki shoes and white stirrupslong and a hooded black cloak (He has spare Akatsuki Cloak's) and the last thing he put on was his favorite spiral mask (I'm sure he has several back up's just incase and plus it's my favorite mask) even though he had two eye's now. He collected his weapon's mostly Kunai's and Explosive tag's, he didn't think he will need anything else at the moment even if he did he could use Chakara Reciever's as blade's.

He teleported back to reality fully equiped now and started to walk toward's where there might be a town where civilization will be but he would stay in the shadow's incase if someone would recognize him. Once he reached the town he was surprised to see a huge castle how did he not notice that but he chose to ignore it as he continued to walk. When he got there he was shocked in a way almost like when he saw Rin's death almost as he saw people that had a look of royalty and had slave's of different age's young to old and there was even children and the weirdest part was that there was collar's on them it possible it's a sign that they belong to them these people reminded him of Orochimaru minus the experiment's. Obito kept in the shadow's and prevented himself from going in the open and start killing off trash they were but right now he needed info not problem's.

He spotted a soldier that had a look of a knight near an ally and was alone at the moment and this was a perfect chance to get the information he needed. He moved with silence and blended with the shadow's of the alley as he approached behind the soldier.

"How's it going?" Obito whispered in a dark tone that made the soldier's blood turn cold as he turned around to see who said that but when he did he was met with dizziness and passed out right there but before he fell Obito quickly grabbed him and used his Kamui on him making the soldier teleport to his dimension and went right after him and when he got there he decided to use a trick he hasn't tried yet. He approach the unconscious soldier and placed his hand on his head even though he was wearing a helmet and whispered Kyūkon no Jutsu (Absorption Soul Technique) he used the Human Path technique to get the intel he needed as he pulled the soul out of the soldier. After getting the intel from the soldier he was quite shocked what he learned, he learned that he was no longer in his world but a different one there was no Shinobi in this world, no Kage's, no Jinchuuriki or Bijuu's.

He learned that in this world there is the four sea's South, North, East, West and there was a border called the Red line and a current called the Grand Line and instead of Shinobi in this world there are people who have power's by eating this fruit called a Devil Fruit but the power's are random and could be anything. There are also this system of Justice called the World Government and use people called the Marine's and they fight against Pirate's who is searching for something that is called One Piece a treasure everyone is after. He was at some place called Mariejois where the World Government HQ is at but the location he was at was actually a kingdom where people called Tenryūbito (Celestial Dragon) World Noble's who believe they are descendent's of ancient king's who established the World Government.

But the main thing that made Obito mad even though he had no connection to this world was that these so called Tenryūbito would buy or capture people of any age or race and would enslave them and brand them as of marking their territory and if they did that, that would mean the slaves would have no life to return to and there mind's would shatter to insanity and if any would try to escape the collar's they had around there neck's would explode and end up killing them so they would have to obey and entertain them in any way they also fed those Devil Fruits to slaves for amusement and the bastard's would get away with it as this so called World Government would actually turn a blind eye for them since they were Royal's.

After getting the intel from the guard and learning of this new world he was in he didn't have a clue to do now since he failed his Infinite Tsukuyomi plan to make a world of peace and bring back Rin but now this world was like the same in a very different way but one thing he knew for sure was that these people deserved freedom he didn't know why he was going to help them even the thing's he did in his world. He just had that feeling in his gut saying 'free these people' so he decided to agree with it. He leaned down toward's the dead corpse and searched his body and found a key that went to those explosive collar's on the poor victim's and now all he had to do was go back and wait for the right moment to strike.

But what he didn't know that someone had the same idea.

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It was night time as the Noble's were mostly inside their houses with their spoiled children who too would some day would become like their parent's. Obito came out of the dark alley he was in before and came out of it and headed silently toward where the slaves were being kept at from what the intel he had gathered from the now dead guard but still he stayed silent as he did not want to alert anybody well at least not yet. He jumped from rooftop to rooftop as he was nearing his destination but then suddenly he heard explosion's be fired somewhere making the place turn into a fire blaze as he heard scream's and panic everywhere most likely the Tenryūbito and some slave's they had around them.

He quickly made his way and found something interesting to say at least there was a man shooting at everything that came to sight building's, guard's and some Tenryūbito that was walking nearby but from what Obito saw made him wonder as he saw the man causing the destruction of Mariejois was a half man and half fish but what the intel he gathered from that one guard they are called Fishmen and from he could tell there was hatred filled in his eye's probably mostly against the slave keeper's but he saw some hint that some went toward's human's probably bad blood between the two but he didn't really care.

He jumped from the building and landed in front of the man which startled him at first but regained his composure ready to attack the stranger not knowing if he was the enemy.

"Who are you!" the Fishman demanded as he aimed his pistol at him ready to kill him if he made the wrong move.

"Merely a stranger who is willing to help you can say" Obito said as he removed the hood that covered his face...mask which was now in plain view for the man to see but still had his gun pointed at him still suspicious of him. He saw that the man fish had bleeding hand's and feet if he was right it would like this man had climbed the mountain that was called the Red Line they were currently on.

"I see I am Fisher Tiger and I am here to free all slave's from the Tenryūbito clutches but I must ask again who are you? Are you a slave?" Tiger said to him and still had a demand in his tone wanting answer's but still needed to free the slave's before an Admiral would come then thing's would get nasty well for him mostly.

"I am no slave and..." then Obito was silent tempting to say his real name since no one knew who he was but to him that name died year's ago when he was buried underneath that boulder that day and when he started the Infinite Tsukuyomi plan and the only name he could say was "I am Madara Uchiha".

Tiger looked at him wondering why a non-slave was here but then determination now in his eye's looked at the havoc he has caused but knew he needed to hurry "Well Madara Uchiha I would like to talk but I am rather busy freeing my fellow people at the moment" he said to Madara and was about to proceed his progress but Madara spoke one more time making him stop in his track's.

"I'm going to free some slave's you do what you can do" Madara spoke almost in a dark whisper making Tiger to turn but to meet nothing the man had simply disappeared but Tiger knew the man he had just met was going to do what he said but he too needed to do his job saving other slave's and kill some Tenryūbito if he meet's some along the way he was sure they would pay for what they did to him and other's.

?

He ran into a few guard's but took them out pretty easily without breaking a sweat and ran toward's his destination. He ran toward's a building and entered but when he did it looked like a torture room most likely to break them to make them loyal out of fear but he just kept going and then he got to the holding cell's where the slave's were held captive and when he got to the door everyone was frighten of him automatically it must be the trauma the freak's put them through he broke the lock easily due to him being a Shinobi with enhanced strength. As he entered he noticed three girl's with tattered clothing looked terrified of him but he chose to ignore it for the moment and went working fast as he unlocked the collar's on everyone and pointed toward's the opened door he broke to get in "If you value your live's and want freedom I suggest you leave" he said simply as he walked out of the imprisoned room and heard everyone behind him as they quickly made a run for it, for their freedom.

He was about to leave when suddenly he heard whimpering behind him and noticed it was the three girl's he saw a moment ago one was taller out of the rest of them but had an oddly shaped head with green hair, the other slim and had orange hair and the one in the middle had jet black hair than ran down to her back and looked pretty and what from he heard from the girl's whispering it seemed the girl with the black hair was the older one out of them. They rushed behind him as if they were lost puppies' as they had tear's in their eye's but looked frightened at the same time but the older sister out of the three spoke to him in a direct tone as if a demand but knew she was hiding behind it "Who are you and why are you helping us?".

Madara looked at the her narrowing his right eye that was only visible to them but they couldn't see it and then spoke "I am Madara Uchiha and I merely helping Fisher Tiger he is the one is setting slave's free but I suggest you leave this place unless you want to stay here" as he said this he saw her take a step back frightened of being kept here but she would not let this moment go as she merely ran past him with tear's in her eye's as her sister's followed after her but she looked back at him for a moment and mouthed a "Thank you" and turned back to running trying to find their way of escaping this hell hole.

Madara looked around him as he still heard people in fight's and scream's being heard around him as the fire just intensified around him so he decided to leave too.

?

Madara traveled a very large distance thank's to his Kamui and was able to find an Island that was closest by which was located to the west but the amazing thing was that it held a giant tree in the middle of it so he decided to stay here for a while until some of the heat would go down where Mariejois was and find out more information of this world and decide what to do since he was in a new world, he didn't need troublesome thing's in his way like last time(Naruto mostly). Several day's passed as he camped near the shore but then he finally decided to go into town that he sensed when he stepped on the island. He traveled through a forest walking toward's the town that was nearby but stopped as he heard yelling but the sound was of children and it piqued his interest and went to check it out. When he got nearby the shouting he saw a girl with jet black hair reading a book while sitting on a rock but he also saw children picking on her and calling her name's not the usual name's but the one's people in his world would call toward's the Jinchuuriki 'Monster' they kept chanting it as one of them threw a tomato it would seem to be and it hit the girl on the head, he could tell the girl was getting angry and still wondered why they were calling her 'Monster' but then he saw it.

The little girl looked at them and waved her arm in the air and arm's sprouted out of no where and went toward's the children that was calling her name's and beat them on their head's until they cried and took off and this made him wonder, Was this the power of a Devil Fruit User? but then he came out of his thought's as he heard a mother yelling toward's the little girl who seemed rather pissed but then he concluded that she was one of the brat's mother as he clearly saw the children from before hiding behind a tree taunting the girl. She was yelling at the girl even calling her 'Disgusting' after hearing that for some reason he wanted to intervene again like he did on Mariejois, this wasnt like him but he felt like he had to again.

He walked out in the opening making all of them including the abused Devil Fruit User look at him until he spoke but not in his usual cold tone he spoke in his favorite childish voice to make people get thrown off from who he was truly or just to mess with them like he did with Deidara.

"HELLLLLOOOOOO" Madara spoke in a high pitch voice as he waved his hand in the air child like.

They looked at him in different perspective's the children behind the tree were frightened of the stranger, the mother took a step back not expecting anybody out here except the 'Monster' and the girl with the Devil Fruit Power's looked at him strangely wondering what he was going to do? Was he going to treat her the same way the other's did?

The mother decided to take action "Who are you!?" she demanded trying to keep her parent tone intact.

"I'm TOBI!" Madara/Tobi yelled as he pumped his fist in the air as if he won something.

"Ok..." the mother said as she turn back to the little girl on the rock who was about to leave "I'm not done with you!" she yelled.

Tobi saw that the mother was about to grab the girl by the hair and decided to scare her as he yelled Doton: Moguragakure no Jutsu (Earth Release: Hiding Like a Mole Technique) he disappeared in the ground shocking everyone but then he reappeared next to the mother and quickly grabbed her arm and waved a finger in front of her.

"Whaaaaa were you going to hurt the poor innocent girl" he said as he waved his finger back and forth but the mother simply yanked her arm away in fear and ran toward's her kid's and quickly made an escape.

Tobi scratched his head in confusion even though he knew why but acted confused anyway "Why did she run? Did I scare her?" he said aloud and turned back toward's the girl who was clutching her book to her chest.

"Are you a Devil Fruit User too?" the little girl asked.

Tobi instantly nodded even though he wasnt he didn't want people know his real secrete but to mislead people at least. "Sure am soooooo...what's your name?" he said as he tilted his head as he crouched to meet eye to eye.

The girl looked a little intimidated by his mask but answered "Robin...Nico Robin" then she ran off.

"W-wait Tobi doesn't know this place" he said in a panic state so he ran after the girl waving his hand's in the air but stopped once he reached the edge of the forest and saw the town and the gigantic tree in the middle of it but saw the girl ran still ignoring him.

Tobi walked in the middle of the town but with his hood back up even though it would lead to suspicion he just did it. He saw people going through the market place he called it as he saw people with groceries in their hand's and some restraunt there and some bar's but he still needed to know where he was and more info on this world.

He walked toward's a stall where people were selling clothing with grin's on their face's and asked one of them in his childish tone "Ummmm where is this place?" he simply asked making the person at the stall to look at him with weary eye's.

The woman looked at him out of confusion but when she looked at his clothing (Cloak) she knew he wasnt from here "Your on an Island called Ohara" she was about to ask where he was from but he interrupted her with another question.

"Ahhhhh I see but Tobi want's to know what's that big tree over there is for?" he asked as he pointed at the gigantic tree.

The woman looked at him wondering why he was asking such a question but answered anyway "It's called the Tree of Knowledge where Archaeologists and Scholars study everything in the world and the tree itself contain's thousands of historic resources that were gathered from all across the globe over hundreds of years...you could say it's the best library in the world" she was going to continue but the man started to walk away making her think he was bored of her telling of history like most people would be.

Tobi had hit the jack pot he will go to this Tree of Knowledge and learn everything he needed to know so he headed there as his first priority. As he arrived at the tree he saw a door which he guessed that was the entrance so he went to it and simply knocked. After several second's the door opened and an old man appeared before him but the strangest thing he had seen was his hair and beard they were in a shape...of a clover. The man looked at him with serious eye's that could kill but had a kind smile and said "How may I help you sir" in a hoarse voice out of age.

"Hellooooo stranger...I heard this is a place of knowledge or a giant library" Tobi said in a very excited voice as he pulled back his hood showing off his mask to the old man who only smirked.

"Yes it is true this place is the Tree of Knowledge where nearly every information is kept of here of the world and my name sir is Professor Clover" he said with a kind smile kept on his face.

Tobi immediately didn't know what to do after hearing his name part of him wanted to laugh but the other part wanted to keep this serious so he kept it serious "My name is Tobi" he said as he poked his chest with his thumb "And I want to read kind sir"

Professor Clover looked at him as his smirk turned into a grin and let out a short laugh "It's been awhile someone wanted to come here for knowledge you are welcome here Tobi" Clover said as he allowed the man to enter the tree and as he did Tobi was kind of awe-struck. There was book upon book's on shelves that could possible count to be over a million and there was a giant globe in the middle of the room this was perfect but the main thing's he really needed to know was 1.World Government 2.Devil Fruit User's 3. Information that will come useful for him in the future. The Professor told him where he could find the information and told him he could stay as long as he wanted.

(This is basic information of Once Piece so skip ahead to avoid major headache)

He found the book's he wanted and began to read or to say scan read since he had a photographic memory due to his Sharingan. The information he gathered after several book's were interesting to him there are three type of Devil Fruit's 1.Paramecia type's that give's off superhuman physical abilities, power's and manipulate and generate some kinds of substances such as liquid's or gas. 2.Zoan type's that allow's people to transform into an animal and acquire every ability affiliated with that animal but the one thing that's rare was mythical creature's you can turn into but it was rare. 3. Logia type's gain the ability to transform themselves into an element making the user intangible or indestructible after learning that he would need to be careful if ever meeting one. But the one thing that's worst is the side effect for the Devil Fruit User's, they would become helpless while submerged in water or to sea stone.

The World Government rule's most of the world and is ruled by people called Gorosei (Five Elder Stars). The Marine's are the main organization used as a public eye while there are people who are called Cipher Pol (CP9) who work's through sabotage, spying, espionage or assassination and train in a specific way's called Rokushiki (Six Styles) that a normal human can't. There is also a place called Impel Down a maximum-security prison for the most dangerous criminals and pirates and is located underneath water in the middle of the calm belt. But one thing that caught some of his interest is Haki (Ambition) a mysterious power that is found in every living being but there are three type's of Haki 1.Kenbunshoku Haki which grants users a sixth sense of the world around them 2.Busoshoku Haki which allows the user to use their will as armor to defend against attacks or to make their own attacks more potent it, it could even go against Devil Fruit User's even Logia type 3.Haoshoku Hakia rare type of Haki only one in a million can use which grants the user the ability to overpower the will of others.

(End of information listing's...yay)

He learned nearly half of this world thank's to this library but he thought he had learned enough for now as it was night time and even though he had Hashirama DNA that didn't need him to eat or go to the bathroom he still needed his sleep. He returned the book's to its selective location's and went to head out but stopped as he saw that everyone was about to throw some sort of party so he headed where Professor Clover was.

"Clover-San what going on here?" Tobi asked as he saw people running around.

"Ah Tobi your still here I hope you enjoyed your time here and well as you can see we are putting up a little surprise for our special friend when she get's here" Clover said as he ran his finger's through his clover Baird.

"Whaaa a party for who?" Tobi asked as he got up toward's the Professor's face but the man remained unaffected by his behavor.

The Professor looked at his mask and even though he couldn't see the man's face he tried to decipher something but lost interest but asked in a serious tone "Can you keep a secrete Tobi?".

Tobi nodded "Tobi can keep secret's, Tobi is a good boy".

Professor questioned the way the man spoke as if he was a child but told him anyway "This party is for a girl who us Archaeologists and Scholars came to a like to and her name is Nico Robin and today she will to become an Archaeologist".

Tobi remembered the girl from earlier who was being bullied but to think a girl her age would become Archaeologist it sounded as if she was a prodigy.

He was going to say something else but suddenly someone yelled saying the girl was coming towards the door making everyone get in position's for their little surprise and they quickly turned off the light's making it extremely dark but he could still see them with his Sharingan and Rinnegan. The door opened letting the moonlight from outside shine in as the girl walked in asking if somebody was here then the light's turned on as everyone yelled surprise making the girl gasp in surprise literally as they shot confetti in the air.

The Professor of course told her that she had officially become an Archaeologist making her smile but all of a sudden she asked if she can research with them on a subject called Pōnegurifu (Poneglyphs) then the air grew silent and cold as the Professor looked at her with serious eye's this time as if she said something taboo and he was correct as he heard Professor said that the World Government would kill anyone who would dare try research the subject. The Professor then threaten the girl if she did not leave the subject alone they would take away her Archaeologist position she has earned and she would never come back here again. The threat seemed to work even though the girl seemed to be protesting and then ran out.

Tobi went next to the Professor who seemed to be in an eternal battle within himself "Clover-San what's wrong?" he asked even though he knew what was happening around him.

"The subject of Poneglyphs is taboo and if anyone knew about what were doing they would surly kill us but I don't want Robin to get into it she's to young to know the truth and her mother would surely be worried if that happened" Clover said as he scratched his baird once again showing he was actually nervous.

Tobi could have brought the subject up but decided against it since everyone seemed stressed out because of it and since it was taboo that meant the World Government would surely look into this if they found out.

?

Several day's has passed since that day as he would occasionally visit the library and learn new fact's but that was about it. One day he followed the Robin girl to see where she was going most of the time since that day then he found out she was helping a giant named Saul back to health and it looked like he was in a battle of some sort.

He was going back to the library but then suddenly heard yelling in the town so he rushed there to find out. Once he got there he saw people with business suit's and rifle's in their hand's telling people to evacuate the island, Tobi wondered who these people were but headed toward's the library to see if the Professor would know of the situation since he learned that Archaeologists and Scholars were in a bad territory and the Government and the secrete research they were doing.

Once he reached the tree location he saw all the Archaeologists and Scholars bundle up in the center of the field and were surrounded by the strange men aiming their rifle's at them and were tempting to shoot. Then he saw that the Professor was talking to a man in front of him who had body guard's to his side and had what seemed to be a snail in his hand that seemed to be communication to someone from afar but then all he heard of 'Kill Him' and the man who had the snail aimed a pistol at the old man and fired.

BANG

That's all he heard ignoring the cries of the other people and the cry of a young girl but all he could feel at that moment...was pure rage.

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DarkSpartan96: Thanks for reading this story and hopefully I'll make more in the future. Sorry if this chapter was too fast but later it will get longer in certain area's to make it better so don't worry this chapter was basic info for the character so he could adapt not get into another fight so fast so...sorry.

This Chapter took me some thinking and sorry for taking so long to update I'm just lazy most of the time and do other stuff but I'm back to writing...yay (sigh). This was a story I thought up one day and since there is no Obito/Tobi crossover's that much I said to myself "Why not give it a try" so here goes nothing I guess and hopefully you random people will like it.

Obito/Tobi/Madara is one of my favorite character's on my list that's one of the reason's I thought this story up on that special day.

Also just to let you know when I'm writing I'm also going to change some of the time-line or make some people age's different I'll let you know. Obito will go by several name's as we all love and know Madara or Tobi so just to let you know so you wont get confused in the future.

Hancock is age 16 in this when she escaped but the event's on Ohara will be in the same timeline making Robin the same age when the Buster Call happens age 8 so she will be younger near Luffy's group age but slightly older.

Help me with tough decision's here people.

1. Should I bring back one of the Akatsuki member's. Probably will bring back Zetsu though because he is his closest ally/friend but you decide.

2. Should Obito/Tobi/Madara be a good guy or a bad guy like in his last world. Ex: Get rid of the World Government type of way.

So please tell me your opinion's in the Review and have a nice day.

-UPDATING ANOTHER STORY SOON IF POSSIBLE-