The Pluton's rooms are like other normal ships except that it has more rooms for weapons and it has more advanced technology. Jon truly feels that it looks like a modern warship when he explores its rooms.
But the machines used in this ship are surely not the ones used in modern warships. He doesn't even know how these machines work, just like how he doesn't understand how Franky uses cola as power.
While walking around, Jon also puts some marks that he will use to seal this ship later. He has learned quite a lot of seal jutsus and even made his own seal jutsu on Laugh Tale just to seal this ship.
'Is this ship really that dangerous, kid?'
'If the description that Robin found in the records about Pluton was correct, then this ship would have more power than you, Kurama.'
'You are kidding, right? Are you telling me that this ship's weapons are as strong as Ten Tails?'
'That is if this ship is just like what was described in the record.'
'What a dangerous weapon. It will be a calamity if it falls into the wrong hands.'
'I agree. But it can save the world if it's used by the right person. In the end, there are no bad weapons, only bad users.'
Jon sends shadow clones to every room in the ship. They are putting seals on every weapon and machine in the ship to make sure they can't be used even if the big seal on the ship is broken. He plans to place many layers of seals to make sure nothing wrong happens.
It takes them 3 days to explore the whole ship because it's very big and they also need to go out frequently to take care of their daily needs. But they manage to keep what they do as a secret. No one knows what they're doing even though their actions are suspicious.
After they finish what they wanted to do on Pluton, Jon seals every room in the ship. The seals just look like writing, but they are very strong. Not even Luffy, Zoro, Sanji, or Jinbe can break the seals when they do some tests.
Then after sealing every room and items in the ship, Jon gets ready to make the final seal that covers the whole ship. Everyone leaves the gigantic ship and stands as far as they can from it, which is right on the wall.
Meanwhile, Jon is activating his Six-Path mode before gathering nature chakra and activates his Sage Mode. So now he is on his Six-Path Sage mode, which is his strongest form. He uses this mode to make the most powerful seal.
"Mokuton: Wood Great Lock!"
Long & big wood blocks are coming out of the ground under the Pluton. They grow from all sides and meet at the top, creating a long dome. Then, lines of characters suddenly crawl on the wood dome like snakes and form a big seal pattern.
But Jon hasn't finished. He makes another layer of the wood dome right on top of the 1st one and puts a seal on it too. Then he makes the 3rd, 4th, 5th, 6th, and 7th layers. He made 7 layers of seals around Pluton
"Do you really need to make that many?"
"I would make more if there is more space in this underground room."
".... Are you serious?"
"One can never be too careful about something like this. I made these seals using nature chakra to make sure they never run out of energy because nature chakra is everywhere. But I can't guarantee that these seals will last forever. I can only guarantee that they won't break no matter what as long as I'm still alive. That means there is a chance they get weaker far in the future after I die and these wood walls can rot because of time. These are just some extra measures to at least make sure they last longer."
"Do you mean the seals will be destroyed when you die?"
"No, they won't. But we never know. Maybe something or someone will damage the seals, be it on purpose or not. When that happens, then nothing can be done because I am the only one who can fix the seals if something were to happen to them."
"Oh, so it's like that. Well, it would be a problem for the future generation to solve. We just need to do what we can now."
They are now finished with their business about Pluton. It has been sealed, Uranus can only be operated by Luffy, and Poseidon is a living being that loves peace. All Ancient Weapons are under control now, so they should be safe.
Well, they are only safe from the threat of Ancient Weapons, but not from the people who want to know if they've found Laugh Tale or not. A lot of Pirate crews are on their way to Wano to find out about it. If it's true, then they will try to take the "One Piece" from Straw Hat Pirates.
Because of these wild pirate crews, the Straw Hat Pirates can't stay in Wano any longer. They leave quickly to avoid making trouble in Wano. Their next destination is Ace's & Whitebeard's graves. Luffy wants to tell Ace that he has found Laugh Tale and "One Piece".
On their way to the island, they fight some pirate crews that chase them. The news of them going to Laugh Tale have spread and they are the ones who spread it. They want to solve everything quickly, so they spread the news to bait everyone who wants to take the "One Piece" from them.
It works really well and now they are chased by many pirate crews. These crews know that Straw Hat Pirates are very strong. But for them, defeating the Straw Hat Pirates and taking the "One Piece" from them is easier than finding Laugh Tale.
Besides, now they can only get "One Piece" by defeating Straw Hat Pirates. There's no use going to Laugh Tale anymore now after Straw Hat Pirates done it. These people are after the treasure, after all, not the Laugh Tale.
The Straw Hats don't hesitate to sink all these crews. Of course, they sink these crews after taking all their valuables. These pirates came to rob the Straw Hats but got robbed instead by their targets because they underestimated the Straw Hat Pirates.
After disposing 13 random pirate crews, the Straw Hat Pirates finally arrive on the island where Ace & Whitebeard are buried. Marco and some Whitebeard Pirates' ex-Captains have waited for them there even though they never told these guys they would come here.
"It seems like you have expected our visit."
"Of course. When I heard it, I knew that you would come to tell the good news to Ace. I called everyone here so you can meet Ace without any disturbance. Just take your time. Leave the pests that followed you to us."
Just as Marco says, there are still some pirate crews on their tail right now. The Straw Hat Pirates planned to deal with them while Luffy went to Ace's grave. But now they all can go to the grave with the former Whitebeard Pirates assisting them.
It's the first time they go to Ace's & Whitebeard's graves. These graves are grander than they thought. There are also many weapons stabbed on the ground around the 2 graves. This place is also used as the graves of Whitebeard Pirates' deceased members, especially those who died in the Marineford war.
"Ace, I've done it. I've gone to Laugh Tale with my crew. Can you believe what I found there? I found Pirate King's sword that has the same name as you. There are also many interesting things there."
Luffy tells Ace the story of how they went to Laugh Tale. The others listen for a while before leaving to prepare a feast because it will take a long time for Luffy to tell all the stories he wants to tell Ace. So they prepare a feast to be enjoyed with the former Whitebeard Pirates too.
As they thought, Luffy needs hours to finish talking with Ace. After he returns, they finally can start their feast. The former Whitebeard Pirates have disposed of the pursuing pirate crews, so they can eat in peace.
"Where will you guys go next?"
"We'll show ourselves to the world and publish our feat of finding Laugh Tale."
"What? Won't that bring a lot more trouble?"
"That is what we want. Rather than hiding it and being constantly targeted at by the curious people, we'd rather admit it and solve everything at once. We'll show them all to not mess with us and prove why we are the real Pirate King crew."
Marco & the other former Whitebeard Pirates are amazed by the Straw Hats' determination. This is what they would hope from a Pirate King crew.