Although he had always wanted to come to Demon Slayer and save his big brother, now that he was actually here, it wasn't so easy to deal with...
Here, he needed to properly explain the trajectory of how the World operated...
Just as he protected Yuta in the main world, all worlds revolved around their "Protagonists." The World Consciousness was basically concentrated on them, and only death could extract the World Consciousness. This was why the Reincarnators desperately wanted to kill them, to destroy and occupy this World.
However, characters like Flame Pillar, who were supposed to die, also carried World Consciousness that needed to be extracted through death. Saving them was almost impossible, unless it was at the cost of the World itself.
"System… is there really no way?"
"Akaza coming was originally the doing of the World Consciousness. Now that he has come, he has also remembered Kyojuro Rengoku, who was supposed to die, and will trouble him again in the future."
"What if… what if I really want to save him…?"
"Host, you are overstepping. There are so many tragedies in the myriad worlds; you alone cannot save them all."
Fang Wuwei fell silent. Indeed, he understood this truth, but he still wanted to struggle a little more...
"There is not no way."
"?! What is it?!"
Fang Wuwei was overjoyed and quickly asked. The next moment, he felt something appear in his hand.
Looking closely, it was an a class item he had once drawn called an emblem (Chapter 45). He still remembered the description of this item: a useless emblem.
This was the first time Fang Wuwei had carefully observed this item: it seemed to be a mark, an emblem formed by a vertical spear with its head pointing upwards, a sword, and a straight blade horizontally placed in opposite directions across the spear shaft. The three weapons formed a cross-like symbol, looking like a logo.
This was probably the emblem of some organization.
Fang Wuwei understood something, but he said nothing. He simply silently handed the emblem to Flame Pillar.
"What is this?"
Flame Pillar did not hesitate and immediately took it. The moment he touched the emblem, it instantly dissolved into a pile of golden-yellow particles, floating in the air and merging into Kyojuro Rengoku's body.
In that instant, Kyojuro Rengoku's vision was a blur. When it cleared, he saw himself... that self, however, was vomiting blood, his body pierced by a punch from the Upper Rank Three, and despite his best efforts, he couldn't stop him, dying at the moment the sun rose. Although he didn't know why, he understood that this was his original fate.
Then, his vision began to detach, detaching from that terrifying future where he died. He left this land, left this planet, and even... left this universe. Finally, his vision arrived at an unknown place:
There were skyscrapers he couldn't comprehend, floating buildings he couldn't comprehend, and golden-yellow everywhere, along with unknown comfortable flocculent matter floating in the air that always made him feel a sense of intimacy.
"Yo, are you new here?!"
An incredibly familiar voice came from behind him—it was his own voice. In immense shock, Kyojuro Rengoku suddenly turned around. In that instant, he saw a face identical to his own, with the same fervent smile, the same enthusiastic spirit. The only difference was that his other self was not wearing a haori but a golden-yellow jacket with an unfamiliar emblem on its chest...
The next second, his vision went black. A series of huge, unknown changes made it difficult for his brain to process. The next moment, he saw the silhouette of a giant person appear before him...
That silhouette, just by standing there, brought him an endless sense of oppression. He had a head of white hair as dazzling as the Milky Way...
The silhouette seemed to sense Flame Pillar's arrival, merely turning its head slightly to show half a face before losing interest. The next instant, Flame Pillar felt some unfamiliar knowledge appear in his mind...
In reality, only a moment had passed. Flame Pillar's expression froze, the smile on his face gradually disappearing. After a long while, he let out a bitter, relieved smile.
Is that so... So I was supposed to die here. The man in front of me... also...
A large amount of golden-yellow flocculent matter separated from Flame Pillar's body, but only Fang Wuwei seemed to see it. The flocculent matter gradually settled, sinking into the ground and disappearing...
"Mr. Fang Wuwei, I understand. I understand everything. Thank you for saving me... I will leave, but I hope that before that, I can briefly say goodbye to my family... Although I can return, it will probably take some time."
Flame Pillar said with a bitter smile, thanking Fang Wuwei. Even though he was a Pillar now, the unquestionable knowledge in his mind made him understand that he had to leave. His face was a bit flustered; he wanted to leave quickly.
The emblem could help the World extract World Consciousness that it couldn't extract itself, sending it back to the World. After this, his existence would no longer be in this World, and he could... leave freely.
Since he had to leave anyway, he decided to go and see this so-called headquarters. His mother had taught him that even if one gained power and became strong, they should protect the weak. Now, that organization shared the same belief and values as him, so why not?
"Before that, you can finish everything you want to do. It's not too late to leave then."
"Understood... Kamado boy, in a couple of days, come back to the Rengoku family with me."
"Really?! Mr. Rengoku!"
Fang Wuwei vaguely sensed something. He seemed to understand what those emblems truly were, but he was still unsure what the organization behind the emblems was...
As for the present?
Fang Wuwei walked towards the overturned train in the distance. He needed to dig out his cheap apprentice first.
The Reincarnators were marked by the radar. The enemy was in the open, and he was in the shadows, so there was no rush.
Arriving at the train, Enmu was dead, and the more than two hundred passengers had naturally woken up. Although Flame Pillar's survival was fortunate, some were still injured.
After Fang Wuwei arrived, he was somewhat surprised to find that his little apprentice had a large gash on her right arm, but she had merely bandaged it, slightly stemming the blood, and had been actively moving around, helping people everywhere.
Pulling a person out from under the train, Ikenouchi Maki hoisted the person onto her shoulder, wiping away tears that had unconsciously fallen from her eyes due to the pain.
"Don't... don't worry, I, Brilliant Gale, will save you!"
Fang Wuwei had to admit that this cheap apprentice seemed to be more than just a chuunibyou.
Ikenouchi Maki placed the injured person aside, ignored the passersby's attempts to stop her, and prepared to go back to rescue more people. But as soon as she turned around, she found her master standing there, watching her.
Instantly, Ikenouchi Maki couldn't hold back.
Pouncing to hug Fang Wuwei's legs, Ikenouchi Maki's tears streamed down, crying loudly.
"Master, oh Master... It's so scary here, so scary... I want to go home, boo hoo hoo hoo hoo hoo..."
"No, the mission isn't finished yet~"
Fang Wuwei smiled as he tossed a low-quality healing pack to Ikenouchi Maki, telling her to cover her wound.
His smile was genuine; he felt a bit of relief for his cheap apprentice.