Chapter 1
Year 1506
My name is Ishikawa Kei, and I never thought staying up late to watch "One Piece" would lead to crossing over.
My body still looked like me on earth only it seemed like I had become younger, and people around me started calling me "Kei".
The good news is that now I know where the crossing is, which is in the world of "One Piece", but the bad news is that in this world I became a slave and now I'm being pushed to the auction with an explosive bracelet.
Even worse, a disgusting stupid pig with a round glass cover known as a celestial dragon passed by the auction house that day and took all the slaves...including me!
In the world of fanfic novels, there shouldn't be a worse crossover start than this. Luckily, at least I could understand their language even though it wasn't a language I knew, but I could instinctively understand it.
...
Now I was taken to a place where the slaves were branded with the celestial dragon symbol on their backs
Ugh! It feels so painful! Fuck! I don't know if it can be deleted later.
Now those stupid pigs are not interested in me, a little kid who should be around nine years old, I hope they will never be interested in me!
...
Hahaha, I finally found my cheat!
I couldn't sleep well for several nights, and finally, I found my cheat
While meditating, I tried to call the system that crossers usually have in fanfic novels but it didn't appear finally, I tried something quite ridiculous, namely trying to get fire magic out of my hand even though I know in this world you can't make fire or something like that without eating devil fruit.
Unexpected things happened, I could produce fire magic in the palm of my hand even though it was small, I felt I could produce fire in the palm of my hand, tried other elements too, and the result was that I could produce water, air, lightning, earth, light and darkness, after trying all the elements that I knew my head felt heavy and then I fell unconscious.
...
I might have a little understanding of how to use mana
You only need to focus on flowing the mana in your body to the part you want or you can imagine the mana into the form of elements that you know after the mana flows or you have imagined it then magic is formed, like my observation and physical strength increases after the mana flows into every nerve in the eye and every muscle and nerve in the body. Even though I could only use it briefly, I wasn't too disappointed because at least my knowledge from reading novels and manga in my old world could be useful and I was still young after all.
As for how to strengthen mana, I use one of the knowledge I know from one of the novels I once read, namely flowing mana continuously without stopping through the nerves throughout your body.
So far, there have been no "out of control" risks. But after I did the exercise my body became difficult to move, maybe because I wasn't used to it.
...
Now I'm being taken by this stupid pig to a yard, more precisely, maybe an arena.
...
Today is my 50th victory, even though my opponents were all adults and maybe some of them used to be pirates, I was able to win thanks to body strengthening magic...
Year 1507.
Today I have almost won 1000 matches and my opponent this time is one of the strongest celestial dragon knights, he wears complete armor from head to toe, as a weapon, not like knights in general use a sword but he uses a large scythe and well, you know the result, I lost for the first time, no wonder he was called one of the strongest knights and I lost my left arm.
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After that defeat I was thrown away to become a porter at the docks.
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The wounds I suffered when fighting the knight were completely healed except for my missing arm, even though I could grow a new arm with magic, I didn't because if they saw my arm grow again I would definitely be used as a guinea pig.
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Finally I succeeded in perfecting the invisible magic which can make me disappear and the levitating magic which can make objects that I pour mana into float not only objects but I myself can make myself float even if only temporarily because I'm not used to it.
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Today I secretly ran away from my work at the docks using invisible magic and no one noticed me.
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Finally I succeeded in realizing a useful magic, namely inventory.
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When I was unloading goods from a navy ship I found something interesting, it was a devil fruit even though I didn't know what devil fruit this was and I wasn't going to eat it because I still like swimming and in the end I just kept it in my inventory. This devil fruit has a shape like the dragon fruit that existed in my previous world but has 2 colors (half red and half white) with a rotating pattern and a small stem growing on top of the fruit.
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Today while I was doing my work I saw from a distance 3 slave women following a convoy of disgusting pigs, they were the Boa sisters Hancock, Sandersonia, and Marigorld, I knew Hancock was beautiful but I didn't expect Marigorld to be no less beautiful than Hancock.
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Right now I'm chatting with a fishman who is a slave, this fishman is the one who will bring riots to Mariejois, yep, that's right fisher tiger, I told him that I could remove the chains on his hands and feet but he didn't believe me, and in the end I proved it by taking mine off, he was surprised to see that I could take off these handcuffs without a key, but he was more surprised when I put my handcuffs back on and scolded me because I put the handcuffs back on, then I told him the reason why I put it on again, he finally understood it and accepted my offer to cause a riot in Mariejois, of course with thorough preparation, that way I took off his handcuffs, then injected a little of my mana into him so that we could continue to communicate via telepathy and made him disappear so that he could sneak into the ship to escape.
....
Year 1508
It doesn't feel like it's been 6 months since Fisher Tiger has been free and now he says he is on Fishman Island, more precisely, the Ryugu Kingdom which is at a depth of 10,000 meters below sea level and now Fisher Tiger is chatting with the king of the Ryugu Kingdom, namely King Neptune and he is telling him all the events that happened. he experienced during an adventure including being captured and becoming a slave to a celestial dragon and then met me.
I had a chance to chat a little with King Neptune through Fisher Tiger and King Neptune invited me to his kingdom as a thank you for freeing Fisher Tiger, after that I chatted and asked Fisher Tiger about the progress of the plan to create chaos in Mariejois and he answered that it was still 10% in about a year. in the future it can only be done, after that I disconnected telepathy and went back to practicing.
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I found another devil fruit while doing ship unloading work, not just one but 2 devil fruit, one was shaped like a yellow melon with curly stems like devil fruit in general and had gray swirls on the fruit, and the other was a blue spade-like fruit. old with swirls all over the fruit.
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I feel stronger after the training I've done, I think I'm ready to go sailing when I'm free.
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I saw 2 humans who shouldn't be in one piece, the first one had slightly brownish skin, black hair with burgundy tips, dark red eyes and had a burn scar on the upper left forehead, he was Kamado Tanjiro. And the other one looks the same as me, the appearance of Japanese people generally has white skin, black hair, and has sharp eyes but he has blue eyes while mine are black, he is Shiba Tatsuya, if I'm free then I'll take them both join my crew.
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Now that I'm chatting with Tanjiro and Tatsuya I'm relieved that not only do they look the same as in the anime but their names and abilities are also the same.
When I asked Tanjiro why he was captured, he answered that it was to replace his only family, namely his younger brother, who was captured as a slave. By the way, his younger sibling's name is also the same, namely Nezuko.
Meanwhile, Tatsuya met a slave ship while fishing, they shot him with tranquilizer bullets, after that he fainted and when he opened his eyes he was already at the auction and finally here.
I told them the escape plan that I had prepared, they listened very seriously and at the end I invited them to join me, after I finished telling them and they looked at each other, maybe 10 minutes passed before they decided to join me, and That's the decision when we escape, we will gather here later to make the escape.
…
It doesn't feel like time has passed so quickly and Fisher Tiger's preparations are almost finished. Of course, I have prepared quite a lot for sailing, starting from money, food and clothes. With the help of Tanjiro and Tatsuya, I was able to collect 2 times more preparations for sailing than before.
…
The end of the year is approaching and Fisher Tiger's preparations are perfect according to plan. I will open the gate leading here to bring him in. I will create chaos by using fire magic. Meanwhile, Fisher Tiger frees the slaves.
…
Finally the long awaited time has arrived for the plan for the "Grilled Pork Festival" to begin!