After seeing Brook find his own remains in his dream memories and possess them, Sig...
It was an intense attachment that made the skeleton a Horcrux he possessed, and he believed himself to have been "resurrected," only that he had returned too late and his body had already decayed...
Sig didn't look at much of what came after that; it was nothing more than Brook "entertaining himself" on the ship for forty-five years!
Through hypnosis, Sig reconstructed Brook's experiences after death, helping him understand the "location" of the Underworld Town, and at the same time...
And that explained why Brook's fear when he saw the giant elephant was somewhat strange... He himself had even forgotten about it!
In fact, when Brook stumbled back from the Underworld Town, he floated onto the back of the giant elephant!
The Underworld Town and the material world exist in the same space, but they do not interfere with each other. Logically, one should not be able to see people and things from the material world in the Underworld Town.
But...
The giant elephant in the dense fog is clearly an exception!
In the Underworld Town, there are also three giant elephants walking "here," and on their backs are entrances and exits that allow them to travel between the two worlds.
Even from Brook's own forgotten deep memories, Sig discovered that the three giant elephants he saw in the Underworld Town were somewhat similar to the Zou giant elephants. Although they were also dazed, Sieg could sense that they possessed consciousness, but they didn't pay much attention to people.
And because there was no seawater in the Underworld Town, Sig also saw the giant elephant's "long legs"—a feature that was completely different from that of an ordinary elephant.
After Brook passed through the entrance and returned to "this side," the giant elephants he passed were the same as those Sig saw now—completely devoid of consciousness, making it seem "likely a Natural Phenomenon."
In other words, these colossal creatures of dense fog appeared simultaneously in both the material world and the Underworld Town. In the Underworld Town, they were conscious, while in the material world, they appeared as inanimate objects that could move.
Sig couldn't help but make some connections...
Could it be that Zou is also like this, simultaneously traveling between two worlds, only Zou's consciousness resides in this world?
What is the connection between these four colossal elephants shrouded in dense fog?
Moreover, it now appears that the dense fog that stabilizes the Seastone Factor is also related to Underworld Town!
"It's a pity that the torii gates here are completely unusable," Sig said helplessly.
Even though Sig used the power of the Float-Float Fruit to make the dilapidated torii gate "float" again, seemingly restoring it to its original state, it still didn't have that feeling of being a "gateway between this world and the next."
The Sequence 5 Dreamwalker already possesses the ability to Spirit World Traversal. Although the Spirit World is not their primary domain, the "collective Sea of Collective Subconscious" is connected to the "Spirit World" on various levels.
The Underworld Town can also be seen as a kind of "Spirit World," a world composed of information and in a mystical sense.
Logically, after obtaining the "location" of the Underworld Town from Brook, Sig should have been able to enter it as well.
Having Paths of the Divine and the Sig to simulate some of the Yomi Devil Fruit ability, Sieg doesn't need to worry about being corrupted by the aura of Underworld Town.
However, Sig encountered some difficulties in practice—even knowing which level of the Underworld Town was located, it was still not easy to enter.
There seemed to be some additional barrier between the two worlds, so Sig thought of the torii gate that Brook had left behind, but unfortunately it was no longer usable.
Sig wasn't in a hurry at all...
After all, there are plenty of these kinds of things in Wano Country!
This made Sig realize that Wano Country's biggest festival, the "Fire Festival," also seemed to contain the imagery of mourning the dead, so it was plausible that it was related to the underworld.
And...
Gungnir Sig is currently in Wano Country. He originally intended to invite Yamato to Alabasta, but now that Sig's two bodies have their memories synchronized in real time, he can immediately attempt to enter Underworld Town of the Dead) in Wano Country!
"Waaaaah, this is so touching!"
"Blow, blow... Big brother... Let's go to Reverse Mountain on the way... Waaah..."
"No, you two don't need to cry like this..."
After hearing Brook's story about Laboon the whale, Jack and Weevil were so moved that they cried buckets of tears and needed Brook to comfort them!
"Hmm? We still have places to go after this. If we're going back to Reverse Mountain, we can get him an Eternal Pose to Whiskey Peak when we get to the next island. With Brook's strength, returning shouldn't be a problem." Sig didn't forget the important matter.
As for Brook...
Now that he has no companions, he naturally cannot rekindle his fighting spirit and has no intention of "crossing the Reverse Mountain head-on, circumnavigating the globe, and then meeting Laboon again."
Brook was already very grateful to hear Sig say that.
Meanwhile, in Wano Country, Sig also arrived in Kuri...
Gungnir Sig originally came to invite Yamato to a meeting in Alabasta in September, but when he arrived in the Flower Capital, he found that only Hiyori was in Kozuki Castle.
Sig was startled when Hiyori suddenly appeared, then informed him, "My husband and Inuarashi went to Kuri; they just set off this morning."
"Just set off? That's really unfortunate... What are you going to Kuri for?" Sig asked, puzzled.
First, we can rule out the possibility of commemorating Kozuki Oden or Oden's Wife, otherwise Hiyori wouldn't be here.
"Not long ago, a reclusive Famous Sword appeared in Kuri, claiming to be looking for a master for the 'Nidai Kitetsu'. So Denjiro and Inuarashi all wanted to go to Kuri. As for Kitetsu ... I was worried about its reputation for bringing bad luck to its master, so I told my husband. After that, my husband decided to go with us to see for himself," Hiyori replied.
Although the Nidai Kitetsu has many terrible legends, and the attribute of "counteracting one's master" has always been linked to "Kitetsu," no swordsman can resist the temptation of Great Grade Sword, especially... a swordsman who doesn't yet have Great Grade Sword or a sword of his own!
All the retainers who had been brought by Oden and were armed with swords wanted to go, but Hiyori was worried about the reputation of the Nidai Kitetsu, so after telling Yamato also decided to go and see if the other party had ulterior motives!
Therefore, Yamato, also went along...
Upon hearing "Nidai Kitetsu," Sig knew that this suddenly appearing Famous Sword must be Tenguyama Hitetsu.
Only...
Logically, Tenguyama Hitetsu should also be an anti- Kaido figure. However, when Yamato became the shogun and raised her banner, Tenguyama Hitetsu didn't come out of seclusion to cooperate. Now that the situation is settled, why is he suddenly appearing to find a master for the "Nidai Kitetsu"?
After learning of this, Sig did not stay in the Flower Capital for long.
After all, Yamato wasn't here, and it felt strange to stay here with his wife and wait for her to return, especially with Kuina still wearing the demon mask and looking at him like he was a thief.
Just as Sig arrived in Kuri, he also learned about the situation in Underworld Town from "the other side"...