The Power of Isonade D Sanbi

The next chapter of One Piece: Final Holy War is out. As it name says, this chapter explains Sanbi's powers in detail so it is going to be an interesting chapter with lots of follow up notes. I highly encourage you to read these notes to better understand his power.

Sanbi began powering up using the power of D. The wind around him began picking up as Sanbi continued to grow stronger. The Straw Hats meanwhile were all in defensive postures ready to fight back against Sanbi and his incredible power. They were all prepared for anything. They had no choice because even those not able to use haki could feel Sanbi's incredible power. And it was indeed powerful and frightening. It truly showed what kind of monsters the D were and why the men of D were known as those with the power of the gods.

"Damn, what incredible haki this guy has. Is this the power of D?" questioned Sanji at feeling Sanbi's incredibly powerful haki.

"Don't lose focus cook. We can't afford to be distracted even for a second. Not against this guy," lectured Zoro who kept his focus on the powerful fishman of D standing infront of him.

Normally Sanji would immediately take being lectured by Zoro as an insult and begin backtalking him. But right now, it was meant as important advice that was to be taken very seriously. Sanji indeed felt very distracted by Sanbi's incredible power and it was causing him to lose focus. And now he could not afford to lose focus, not against the fishman standing in front of him. Any mistakes he made could cost him the lives of his nakama and nothing would ever make up for that. Steeling himself, Sanji kept his focus on the powerful Knight of D who was here to kidnap his beloved mermaid princess and possibly kill his nakama.

Sanbi then in a huge burst of speed sprung towards Zoro at high speed. The sudden speed especially for someone as large and hulking as Sanbi took Zoro off guard.

"Fast" thought Zoro.

Sanbi went for a massive right hit which Zoro only narrowedly blocked by crossing his three swords together. The power of Sanbi's attack was so strong that it created a large shockwave that blew a lot of wind.

"What insane power," thought Zoro who despite having blocked Sanbi's initial attack still couldn't help but awe at his strength.

"Wow, that guy created such a huge shockwave with a mere punch," commented Ussop also in awe at Sanbi's power.

Sanbi however then sent a powerful hit with his other arm. This one however even though was blocked again by Zoro sent him flying back.

"Zoro!" shouted Chopper at seeing Zoro flying back.

"Bastard," cursed out Sanji who decided to try his luck.

"Collier," said Sanji who attempted to kick Sanbi's neck.

Sanbi however easily blocked Sanbi's kick and then grabbed his outstretched leg and then slammed him hard onto the ground. Sanji coughed out in pain in response.

Not letting up Sanbi then hurled Sanji into the air. Sanbi then held is hand out which had water droplets on it and then through a water droplet at the still airborne Sanji who quickly used sky walk to evade the water bullet.

"Sky Walk," said Sanji stepping on the air and quickly heading towards Sanbi.

"Diable Jambe," said Sanji who began spinning in the air thus causing his leg to big glowing yellow from the heat of the friction.

"Collier Strike," said Sanji who went for a kick to Sanbi's neck enhanced by Diable Jambe.

Sanbi however countered in a way that no one, especially not Sanji would have predicted. Sanbi caught Sanji's Diable Jambe heated leg in his hand. You could hear the sound of flesh frying but Sanbi didn't seem the least bit bothered by the intense heat of Sanji's Diable Jambe attack.

"N – n – no way, he caught Sanji-san's leg," stuttered out a shocked Brook.

"Sanji's Diable Jambe attack is extremely hot and he's just holding his leg without even flinching. That shouldn't be possible," said an equally shocked Chopper.

As surprised as the Straw Hats were, no one was more surprised than Sanji himself. As the one who created the Diable Jambe and perfected it during the two year training period, Sanji knew just how strong that attack was. It was hot enough to allow Sanji to easily kill a Pacifista which is much tougher than steel and even hot enough to create severe burns even while deep underwater. Yet here Sanbi was holding onto Sanji's burning leg and apparently not even trying to let go.

"I – I – Impossible," stuttered out Sanji.

"That attack of yours is certainly hot, and very devastating. However not to me," said Sanbi who hadn't released Sanji's burning leg.

"I'll take you out first," said Sanbi who held out his hand ready to deliver the finishing blow.

"Santoryu Kokujo: O Tatsumaki," cried Zoro as a huge dragon like aura formed around him and Zoro sent a massive dragon shaped tornado towards Sanbi.

Sanji, quickly taking advantage of Sanbi's surprise kicked Sanbi thus causing him to let go of his leg and then jumped back just before Zoro's dragon tornado attack engulfed Sanbi completely.

The tornado continued to keep on going showing no signs of stopping.

"All right he did it," cheered Nami.

"It's definitely over now, there's no way that he'd survive that. That attack can cut through thick steel like fruit," commented Franky with a grin.

The victory celebration was short lived as Zoro's dragon tornado was dispelled suddenly and Sanbi was shown to only have just very small light cuts. They were so small that it was like he took no damage whatsoever.

"N – n – no way, he barely has a scratch on him," stuttered Ussop.

"Just what the hell is going on!" shouted Ussop in fright and frustration.

"Zoro's attacks can cut through thick steel with ease. There's no way he should even be alive much less with almost no damage," said Chopper.

"Perhaps it's some kind of ability that he possesses," offered Robin.

Zoro himself was gritting his teeth in frustration. His attack completely failed. He already knew that his attack wouldn't be enough to defeat Sanbi since he was able to take Sanji's very powerful Diable Jambe but the Knight of D didn't take any damage at all.

Sanbi then suddenly disappeared and reappeared directly infront of Zoro closelining him into the ground.

"That closeline nearly took my head off," thought Zoro only to have his thoughts stopped by a large foot stomp onto his chest.

Zoro grunted in pain as Sanbi held his massive hand back ready to finish him off when suddenly a stream of fire interrupted him.

"Franky Fireball," said Franky who sent a large stream of fire towards Sanbi.

"Franky Fireball," said Franky again who sent another burst of flames towards Sanbi.

Suddenly Sanbi sensed something and looked in the air to see Sanji spinning rapidly on the air, his leg once again a shiny yellow.

"Diable Jambe," said Sanji ready to launch a Diable Jambe attack.

"Poele a frire: Spectre," said Sanji who began kicking down rapidly sending several fireballs towards Sanbi.

As both fire based attacks continued to advance towards him Sanbi held is hand out in a bowl shaped gesture as a blue orb formed in his hands. Then Sanbi threw the orb which then became a large current of water that completely overwhelmed Franky's fresh fire attack and then hit Franky knocking him back several feet away. Immediately he used his massive hands to throw a barrage of water droplets in Sanji's direction. The water droplets turned to arrows which pierced and easily cut down all of Sanji's fireballs following which several of them hit Sanji directly giving him several cuts.

"He stopped both Frankys-san's and Sanji-san's attacks using nothing but water," said Brook.

"I know that water has a natural advantage over fire but this is just ridiculous. Both of their attacks were really strong and he was able to stop them both," commented Nami amazed at Sanbi being able to stop both Franky's and Sanji's attacks.

"But where is he getting all the water from?" questioned Chopper.

Zoro while also surprised at Sanbi's water based counter was also analyzing his enemy.

"This guy, he easily takes a Diable Jambe from the cook which is extremely hot. He then takes one of my attacks which could cut through steel easily, moves extremely fast despite that massive body of his and then shows great mastery over water. Just what the hell is this guy," thought Zoro trying to figure out the power of Sanbi.

"I could tell that you're all wondering about what my power is. Well you already know about my power as a D but I am still a fishman and I take pride in that. And my control over water is because of my mastery in fishman karate and merman combat," said Sanbi.

"Fishman karate and merman combat," repeated Sanji.

"Yes, fishman karate and mermen combat are both fighting styles developed by fishmen and merfolk respectively that both focus on manipulating the water in the surroundings and using it to perform various attacks. Of course fishman karate is designed to be used by fishmen and merman combat designed for merfolk. I however am a master at both despite not being a merman," explained Sanbi.

"But there isn't any water nearby for you to use," said Nami.

"That's where you're wrong," replied Sanbi.

"What?" replied Nami questionably.

"The water in the atmosphere," said Sanbi to answer Nami's curiousity.

"In the atmosphere," replied Nami back.

"That's right, my skill is so great that even the water in the atmosphere is at my command. Most fishmen and merman can only use water when they are actually in the sea while on land they can only use physical attacks. However I am one of the few of my species that can use water even when there isn't any bodies of water nearby," said Sanbi.

"Jinbe could do it as well," replied Nami.

"Ah yes, the ex-Shichbukai Jinbe. That's true, he is indeed a great master of fishman karate but even his skills pale in comparison to my own," said Sanbi.

"You see Jinbe can use the water vapor in the atmosphere to create shockwaves that can actually hit and damage his enemies. However he is unable to utilize actual water to a high extend when on land. Furthermore Jinbe doesn't use mermen combat," said Sanbi.

"I however can actually condense the water vapor in the air into liquid form and hence use actual water in battle even when there isn't any water bodies present. All the water in the atmosphere is my weapon. And since the water in the atmosphere is essentially unlimited, I am capable of creating an infinite amount of water and using it to perform powerful water based attacks. Forming actual water when there isn't any present is something that even Jinbe is unable to do," stated Sanbi.

The Straw Hats recalled seeing Jinbe in battle and realized that what Sanbi said about Jinbe unable to actually form water was true. Well almost true, he was able to fire powerful water bullets but that was it. He could only form drops of water while Sanbi can form extremely large amounts of water and currents. In other words, Sanbi's mastery over water was levels above that of Jinbe's. He was completely different from the fishmen that they fought the last time on Fishman Island. Sanbi was in a whole other league. He was a true monster.

"There is also the fact that we're here on Fishman Island. You see the water in the atmosphere varies from place to place. In a desert for example, there is little to no water in the air for me to use. Likewise in a winter island, most of the water is already frozen so I can't use it as well," explained Sanbi about how his ability to use the water in the atmosphere varies from place to place.

"But here on Fishman Island the water concentration in the atmosphere is far greater than almost anywhere else in the world. This is because Fishman Island is actually underwater. As a result there is far more water for me to use than anywhere else with the exception of the sea itself meaning my attacks are at their strongest here," said Sanbi revealing how he is stronger here than anywhere else.

"That is why Dragon-sama chose me specifically to take the mermaid princess. You see Fishman Island is located 10 000 feet underwater so the revolutionary army which is made mostly of humans can easily drown in the off chance that they are sent into the water while fishmen and mermen don't have to worry about that since both can breathe and even become more powerful underwater. This is even worse for devil fruit users who are finished once they hit the water. So despite the power of the revolutionary army, Fishman Island is still one of the most dangerous places for them," explained Sanbi.

"However this isn't a problem for me since I am a fishmen. I can breath and swim underwater so the problems other revolutionaries would have here don't apply to me. In fact I am actually stronger in the water," said Sanbi.

"You could say that I have home field advantage here," said Sanbi.

The Straw Hats were all able to get that. They have faced several adversaries in the past who held an advantage over them because of their location. Crocodile because of his sand powers was much stronger in the desert environment of Alabasta. Moriah because he was surrounded by zombies and had a large supply of shadows to power himself up. In fact whenever they were in enemy territory, the enemy always had the so called home field advantage since in their "home" they at least had numbers on their side. For Sanbi, the homefield advantage was even more intimate. Not only did his water manipulation ability get a hefty bonus on Fishman Island, the country itself was his home.

"Then there is the mermaid princess herself," said Sanbi looking at Shirahoshi.

"If she was able to escape into the sea then it would be almost impossible to catch her. However I am actually much faster than a mermaid so catching her would be no problem even if she decides to go into the water," explained Sanbi.

"Then there is her ability to control sea kings. If she was to call them, then most of the revolutionaries wouldn't be able to handle her. The stronger members of the revolutionary army can kill sea kings with ease but here ten thousand feet underwater they're fighting power is significantly reduced. So if she goes into the water and calls the sea kings to protect her, capturing her is almost impossible. Her speed as a mermaid in the water, being able to breath underwater and an army of giant sea kings coupled with the revolutionaries not being able to breathe underwater and having their powers reduced underwater means that she couldn't be captured at all," Sanbi continued to explain.

"But I can do it. I unlike the other top revolutionaries can breathe underwater, am much faster than her and much stronger in the water. So killing any sea kings that she summons to protect her wouldn't be a problem for me. You could say that my power allows me to specifically counter that of Poseidon's," said Sanbi.

The Straw Hats all got the logic of Sanbi's explanation. Given Sanbi's species as a fishmen, he pretty much had all the tools in his arsenal to counter Shirahoshi's power. Because he can breath underwater, Shirahoshi looses that particular advantage. If he was indeed faster than Shirahoshi was then she also doesn't have the speed advantage underwater. And given how strong Sanbi is, since he would be much stronger in the water, he could easily kill the sea kings that Shirahoshi calls to her aid. Dragon made a well played move by having Sanbi of all people come after her. Any advantage Shirahoshi or anyone had on Fishman Island was easily countered by one of Sanbi's abilities.

"Now then princess Shirahoshi, once again come with me," Sanbi demanded.

Shirahoshi looked down for a moment. Sanbi's description of his power really made her give his demand serious thought. She was someone who loved her people despite her relative isolation from them most of her life and wouldn't want anything to happen to them. Likewise she loved all the Straw Hats as they were her dear friends despite not knowing them that well and the short time they spent together. And the powerful fishman's power was so great that she actually thought that he might succeed in killing her friends. And she was right to think so because he was far stronger than Hody and actually got stronger from being here on Fishman Island. In the brief skirmish that he had with the crew so far, he quickly established his dominant power and that it far exceeded even the combined might of the Straw Hats. And it was clear that he would kill them if they stood in his way. But if she went with him, then they would be spared his wrath.

Just as she was about to give in, Vivi spoke.

"She's not going anywhere," said Vivi suddenly.

The Straw Hats, the three civilians and the rest of the Neptune family turned their attention to Vivi. Sanbi himself looked at Vivi with a frown.

"You're asking her to come with you, for what, for her to become a weapon to Dragon, for her to be used to help that man's sick and twisted ambition. Dragon is pure evil. He says that he wants to make this world a better place but all he's doing is spreading corruption. How is engaging in slavery making the world a better place? How is using fear and power to force people into submission making this world a better place? What he is doing is just making the world his own and he wants to use Shirahoshi-chan for that very purpose. I wouldn't let you take my little sister away like that," spoke a determined Vivi.

All the Straw Hats along with the Neptune family had surprised looks at Vivi's determination and protectiveness of Shirahoshi.

"Vivi," said Robin.

"Vivi-sama," said Shirahoshi.

"Princess Vivi of Alabasta Kingdom, I would choose my next words carefully if I were you. No one speaks about Dragon-sama like that," said Sanbi threateningly.

Viv however was not phased by Sanbi's threat despite him having more than enough power to carry it out. Her protectiveness of Shirahoshi was giving her the strength to stand up to the powerful Knight.

"And why shouldn't I. It's the truth. Dragon takes people as slaves to make the people of the world fear him so that they wouldn't rebel against him. That's not how a ruler should be. A ruler should be benevolent and kind to its people. Not use fear and intimidation to force loyalty out of them. You say that Dragon's goal is to change the world but what he has done is make it fear him and the revolutionary army more. Maybe Dragon has changed the world, but he changed it by making it worse," Vivi retorted back loudly.

"Dragon-sama effectively stopped the slavery of fishmen and merfolk. Dragon-sama has made it so that the people of Ryuuga Kingdom would not be afraid to show themselves to the world above ground. Princess Shirahoshi, wasn't that your mother's dream, for a world where humans and fishmen co-exist in harmony. Well Dragon-sama has finally made that dream a reality. Not the world government, but Dragon-sama. If you come with me, then you can truly make that dream a reality, where there will be no place that fishmen would be afraid to go because any harm to them would be punished severely by the army. So I'm asking you yet again, come with me and make your mother's wish come true. It is what she would have wanted for sure," said Sanbi yet again inviting Shirahoshi to surrender.

Shirahoshi was silent for a few moments before replying.

"No it isn't," said Shirahoshi.

"What," replied back Sanbi.

"This isn't what mother would have wanted. Mother wanted a world where humans and merfolk would live together happily, not a world where humans fear our kind. If I go with you, it wouldn't help humans and merfolk get along, it would only make them fear us more and drive them away even further. Mother always dreamt of humans and fishmen getting along but she never wanted to force humans to accept us. She instead wanted to help them as much as possible and show them that our kind mean them no harm and that we want to become friends with them," said Shirahoshi reminiscing on her mother's past efforts to bring humans and fishmen closer together.

"So I'm sorry Sanbi-sama, but I can't go with you. Mother would have never wanted me to do that and neither would …" said Shirahoshi trailing off not too sure about the last part.

"Neither would Luffy-sama," Shirahoshi finally said.

Sanbi was silent for a second before replying.

"Neither would Luffy, how wrong you are. He would want that too," said Sanbi.

"That's a lie. Luffy-san would never want Shirahoshi to be taken away like that to become a weapon, even if it's under his father. You're lieing. I know it. Luffy-san would never want that to happen to Shirahoshi or any of his nakama," shouted Vivi back.

"Bastard, how dare you say that about Luffy!" shouted Ussop as well.

"Teme, I know that Luffy may not be thinking straight right now but even he wouldn't want that," said Sanji.

"Luffy is our nakama and Shirahoshi's as well so he'd never let anything happen to her," said Chopper.

"There is no way that Luffy would ever let that happen. Not Luffy, never him. All he's even done was care about his friends. I know that even though he left, he's still cares about us. There's no way that he'll even ever consider letting Shirahoshi be taken away like that," said Nami.

"I don't know what your purpose for saying that was, but we wouldn't let you get away for lieing to us about Luffy like that. Believe me on that one. We wouldn't let you slander his name like that," said Robin joining Nami.

"You think you know him. You know nothing about him, about Lord Dragon's heir. He is far different from what you think he was. He's no longer the same person that was once your captain," said Sanbi.

"What did you do?" asked Robin.

"Excuse me," replied Sanbi back.

"I asked what did you and Dragon do. If he's changed as much as you say that clearly Dragon must have done something to him."

"It is not what I did. It is what the world did. You see you may all think that Luffy would never adopt Lord Dragon's way of thinking, that he would never approve of the slavery of pirates and using force to bring order and stability to the world. But this is a cruel world and only measures such as Lord Dragon's can help make it better," started Sanbi.

"Luffy already had hatred for the world government ever since Akainu murdered his brother. But that hatred was buried deep within him and when he joined us, he saw the true evils of the world. He saw that the world government and pirates are truly evil and that they both deserved miserable ends. He already had hatred for the world government because they killed his brother among other reasons but he also possess an equally fearsome hatred for pirates," said Sanbi.

The last part left all the Straw Hats shocked to the core, Luffy the one who dreamed of becoming the King of the Pirates hated pirates. One thought crossed their minds. Why does Luffy hate pirates?

"I could tell that you're all wondering about why Luffy would hate pirates so much when he himself wanted to become the Pirate King so much. Very well I'll tell you why. I'll tell you about the incident that forever left an extreme hatred for pirates and forever cemented his loyalty to Dragon-sama," stated Sanbi.

Cliffhanger, Luffy hates pirates. Luffy wanted to become the King of the Pirates, his idol Shanks was a pirate, his mentor Rayliegh was a pirate so why would he hate pirates. Well next chapter you'll find out. We know that he hates the world government obviously but I bet no one expected him to hate pirates as well. Find out why Luffy developed a deep loathing for pirates and the incident that forever made him the true heir of the revolutionary army.

A few people are asking when do I update. Unfortunately I cannot give you an answer to that because I do not know myself. I update when I finish a chapter but that could take a while since I actually have to write them. Also I have my own life to live so I cannot focus on this fic all the time. Oh and for the record I stopped writing One Piece Shippuden. I cannot focus on two large fics at the same time and One Piece: Final Holy War will last a long time so if anyone wants to adopt Shippuden or the idea, feel free to do so, just PM me.

Several instances of Sanbi's power has been shown.

The first display of Sanbi's power is his catching Sanji's Diable Jambe. This is quite a feat because if you recall, Sanji's Diable Jambe can kill a Pacifista in one blow. This is something because Pacifista armor is much tougher than steel. Also Sanji's Diable Jambe is extremely hot as it can inflict severe burns even in deep water as shown when he used it to burn part of the Kraken's tentacle. Yet despite this, Sanbi was able to hold Sanji's heated leg and hold it without even flinching showing that the intense heat of Sanji's Diable Jambe has no effect on him, the same Diable Jambe that could one shot a Pacifista and severely burn even deep underwater. This shows just how tough Sanbi is.

Another display of Sanbi's power is shown, him taking Zoro's attack. The attack Zoro used on Sanbi is the same one he used on Fishman Island to cut through the fishmen carrying thick steel shields. Zoro's attack was able to cut through the thick steel as if it were fruit. Sanbi however took it with only minor scratches. The fact that an attack that easily cuts through steel barely did anything to Sanbi should indicate just how strong he is. Add to that Sanji's Diable Jambe not really doing anything to him and you can see just how incredible Sanbi's strength is.

How was Sanbi able to block Sanji's Diable Jambe and Zoro's attack. Both Sanji's and Zoro's attacks are both very powerful so Sanbi used the power of D to block it. I will reveal what the power of D is later in this arc.

Sanbi's power has been revealed, his mastery over fishman karate and mermen combat. Both fighting styles are about manipulating the water in the surrounding environment to perform various water based attacks. As a result both can only be used to their full extent when the fishman or merman is actually underwater. They're use of water while on land is limited to the use of water droplets and in Jinbe's case, the use of water vapor to inflict damage to the enemy. However even Jinbe is unable to use actual water while on land. Sanbi however is a different story. Sanbi's skill in both fighting styles is so great that he can condense the water vapor in the air into liquid and thus actually create water from out of thin air. This means that he can literally create water to use in fishman karate and mermen combat and thus use water based attacks even when there is no water present. This is what really separates Sanbi from all the other fishmen and merman and thus makes him the strongest fishman in history. No other fishman is capable of this and only his skills are so great that he can really harness water while on dry land.

Difference between Jinbe and Sanbi. Jinbe and Sanbi are two of the strongest fishmen in history however Sanbi is much stronger than Jinbe. In addition to being stronger, faster, having greater endurance, mastery over haki etc, Sanbi's mastery over fishman karate is far greater than Jinbe's. Jinbe is not really able to use water while on land. He can form water bullets and use the water vapor in the air to form a shockwave and hit an enemy but he is not able to actually form water. Sanbi however can convert the water vapor in the air into liquid form and hence form actual water for him to use. Jinbe is unable to do this and can only use water based attacks while underwater. Furthermore Jinbe is unable to use merman combat while Sanbi can use it. So as you can see, Sanbi's power vastly exceeds Jinbe's.

Sanbi being on Fishman Island making him stronger. Sanbi's main power revolves around harnessing the water in the atmosphere to his advantage. However in order for him to do that there must be water in the atmosphere to begin with. In a desert there is little to no water in the atmosphere so he can't use his skills there. Likewise on a frozen land, all the water vapor is frozen so he can't form water there either. His ability to form water varies from place to place. He can't use it at all in a desert or on a winter island. Also he can use this skill better on the beach than high in the mountains because the water concentration is higher on the beach since it is right next to the sea while there is not as much water in the atmosphere high in the mountains. Fishman Island is located underwater and thus the water concentration is higher there than anywhere else in the world, except for the sea itself. He can form almost an unlimited amount of water and thus his attacks are at their strongest on Fishman Island. Since Fishman Island was his homeland, along with the high water vapor there, he practically has home field advantage on Fishman Island.

Reasons why Dragon specifically chose Sanbi to capture Shirahoshi. Dragon chose Sanbi specifically because he was the one with the best chance of capturing her due to his particular abilities. This again shows how much of a master tactician Dragon is. He was able to accurately assess the situation and chose the best person for the job, in this case Sanbi. These reasons are listed below.

Sanbi being a fishman. Sanbi being a fishman is the first reason why Dragon wanted to send him on this particular mission. Humans can't breathe underwater and Fishman Island is located ten thousand feet underwater. So even the strongest revolutionary would have trouble there. This is especially true for devil fruit users. Revolutionaries even though they can't breathe underwater can at least swim. Devil fruit users are completely helpless once they hit the water and are finished. This doesn't apply to Sanbi however. If Sanbi is somehow sent into the water, it wouldn't be a problem for him in anyway. In fact, Sanbi would get stronger just by being in the water. So the disadvantage that other revolutionaries face underwater don't apply to Sanbi so he is the perfect person for this mission.

Sanbi's mastery of fishman karate. Sanbi's mastery over both Fishman Karate and Merman Combat is the second reason why Dragon chose to send Sanbi to Fishman Island. Anyone else would not be affected by Fishman Island's environment but Sanbi actually gets stronger by being on Fishman Island. Sanbi's power is due to his ability to manipulate the water in the atmosphere and as explained earlier, Fishman Island has the highest water vapor concentration, so Sanbi is at his strongest there. Unlike other revolutionaries, Sanbi actually gets stronger by being on Fishman Island and thus he is the perfect choice for this mission.

Shirahoshi's speed in the water. Shirahoshi's speed in the water is the third reason Dragon chose to choose Sanbi. Since Shirahoshi is a mermaid, she is extremely fast in the water, so fast that no one could catch her. The strongest revolutionaries wouldn't be able to catch her since they can't swim very fast and can't breathe underwater. Sanbi however as a fishman is much faster in the water, so fast that he could catch Shirahoshi easily.

Shirahoshi's sea king calling power. The final reason that Dragon chose Sanbi was due to her abilities to call the sea kings. If Shirahoshi calls the sea kings, even the strongest of revolutionaries can't do anything. They could kill sea kings easily but usually sea kings stay in the water and most of the revolutionaries have their strength significantly reduced in the water with devil fruit users being powerless. So even the strongest revolutionaries can't do much against the sea kings while underwater. Sanbi however doesn't get any weaker underwater, in fact he gets stronger, so strong that he could kill any sea kings that Shirahoshi summons. That means that Sanbi's power is specifically meant to counter Poseidon's.

Well that's about it. Stay tune for the next chapter explaining Luffy's hatred for pirates. That is sure to be interesting.