Accelerating the Plot to the Grand Finale

After Gyutaro died, Dan Lei retrieved the Blood Vine that had been attached to him and then said to Tengen Uzui, "Tengen, notify everyone to retreat immediately. Kibutsuji Muzan will arrive soon.

Fighting him here, let alone whether we can win, means the Entertainment District and the nearby people are doomed!

If anyone refuses to leave, knock them out and take them with us. Our decisive battle with him must take place where we've prepared!"

Tengen Uzui knew Dan Lei was right. Although this was an opportunity to face Kibutsuji Muzan directly, rushing in would be suicide.

In fact, Dan Lei was certain that Kibutsuji Muzan, who had found nothing after receiving information about the Blue Spider Lily and coming to the vicinity of the Entertainment District, would go on a rampage to vent his anger.

This was because unless he had received Abundance's blessing and could now face the sun, the Blue Spider Lily was something he could not give up.

Kibutsuji Muzan was on a completely different level than other demons. Dan Lei did not want to face him without being fully prepared.

Therefore, Tanjiro, who subsequently objected, was directly knocked out by Dan Lei, who didn't even want to waste time arguing with him.

Because they retreated in time, when Kibutsuji Muzan arrived, all he could see was the burned-down Kyogoku House. Not a single member of the Demon Slayer Corps was found.

The next day, Dan Lei received intelligence that the entire Upper Red-Light District had been destroyed overnight, with no survivors.

This tragedy left the other members of the Demon Slayer Corps in silence, blaming themselves inwardly.

However, Dan Lei didn't feel much.

It wasn't that Dan Lei was cold-blooded, but rather that he knew unless he was willing to act as bait to lure Kibutsuji Muzan away, the outcome wouldn't change.

But Dan Lei certainly wouldn't risk his life for these strangers. After all, if he died here, whether the Holy Grail could send him back to the Star Rail Universe was completely unknown.

Assuming he only had one life, Dan Lei didn't care if others died.

Still, he had to put on an act. After returning to the Demon Slayer Corps headquarters, Dan Lei immediately proposed the plan for the decisive battle.

Now that Kibutsuji Muzan had clearly obtained the Destiny of Abundance, Dan Lei no longer dared to delay. Once Kibutsuji Muzan mastered the power of the Destiny of Abundance, he might truly become unbeatable.

At that point, Dan Lei's only option would be to hide, silently absorb Ley Line Magic to fill the Holy Grail, and then flee in disgrace.

This would be too humiliating. Although the Sustainer Dragon Clan was only slightly superior to ordinary humans in terms of physical fitness and possessed the talent for multiple reincarnations, it was still an immortal bloodline. Dan Lei, while scoffing at the clan's inherent belief in their noble status as descendants of immortals, couldn't accept being driven away by a monster from a low-level magic planet.

Due to the Upper Red-Light District massacre, the Demon Slayer Corps fully accepted Dan Lei's plan for the decisive battle and stated that as long as Kibutsuji Muzan could be eliminated, they were willing to cooperate with any force that could help.

With this guarantee, coupled with Gyutaro's blood from the Blood Vine and the mention of the Blue Spider Lily, Tamayo, who had been hiding and refusing to appear, finally decided to show herself.

After learning the importance of the Blue Spider Lily, the Demon Slayer Corps searched for it with all their might. With Dan Lei's guidance, they quickly found it during the peak of the noon sun and brought it back to the Demon Slayer Corps.

With the Blue Spider Lily, Tamayo's progress on the human transformation medicine greatly accelerated.

Of course, Dan Lei also took some samples of the Blue Spider Lily and the human transformation medicine, and memorized the information thoroughly, as he had a feeling these might help in recovering from the Mara-struck state.

However, Dan Lei's focus during this period was not on the research of the human transformation medicine and the Blue Spider Lily.

While the entire Demon Slayer Corps was undergoing special training for the final battle, Dan Lei was setting up a workshop on the mountain where the Demon Slayer Corps headquarters was located.

Kagaya Ubuyashiki harbored an extreme hatred for Kibutsuji Muzan. When Dan Lei proposed turning the entire mountain range where the Demon Slayer Corps headquarters was located into a trap targeting Kibutsuji Muzan, even though he didn't understand Dan Lei's operations at all, he immediately agreed.

For Kagaya Ubuyashiki, his own life was unimportant, and a mountain was also unimportant. The most important thing was the absence of Kibutsuji Muzan.

Furthermore, Kagaya Ubuyashiki knew that Dan Lei could store some magical means within gems. Thus, he poured all his family's wealth into acquiring a large number of gems and various metals for Dan Lei, with only one request: to ensure Kibutsuji Muzan was utterly killed there.

It had to be said, the Ubuyashiki family was truly wealthy. Japan was also rich in silver. Dan Lei remarked that if he had had so much precious metal in his previous life, he would have woken up laughing in his dreams every night.

Thus, Dan Lei began to direct the Demon Slayer Corps' Kakushi to chop down trees.

The wisteria trees covering the mountain severely interfered with his workshop setup.

Of course, these trees were not cut for nothing. The wisteria flowers would be given to Shinobu Kocho to make poisons targeting demons, and Dan Lei would use the wood itself, combined with various metals, to create puppets.

Here, the Swordsmith Village had already handed over the Yoriichi Type Zero they had preserved to Dan Lei.

With Dan Lei's puppet technology, replicating the Yoriichi Type Zero was very simple; mass production was possible as long as there were materials.

These might not be enough to fight Upper Rank demons, but they would certainly be sufficient for restraining and dealing with ordinary demons.

The preparation time for this decisive battle was very long, spanning over four months.

During this period, Kibutsuji Muzan's rampage outside could be described as "killing madly."

In order to find Dan Lei, Kibutsuji Muzan transformed a large number of demons and began indiscriminately attacking humans at night, with a single objective: to force Dan Lei out.

Furthermore, he had become so insane that he began attacking the government, which directly led to the existence of demons becoming known to ordinary humans.

Then, as you know, those high-ranking humans would do anything for longevity.

This directly caused infighting within the Japanese government, with some working to eliminate demons and others secretly supporting them.

It could be said that during these three months, the entire Japan was in chaos. Foreign powers even took notice of the situation, and quite a few demons were directly captured and taken abroad.

However, the Ubuyashiki family managed to hold on during the preparation period.

This was because Tamayo provided intelligence: as soon as Kibutsuji Muzan died, all the demons controlled by him would instantly perish, eliminating the worry of demons being taken abroad and spreading such monsters worldwide.

Then, when all preparations were complete, Kagaya Ubuyashiki took a photograph – a picture of him holding a Blue Spider Lily, with the address of the Demon Slayer Corps headquarters in the background.

This was an invitation, a formal notice of death for Kibutsuji Muzan.

During this chaotic period, this photograph could be given to any demon to kill, letting it see the picture repeatedly before its death. It would then notify Kibutsuji Muzan.

And Kibutsuji Muzan, upon seeing this "invitation," naturally would not refuse.

After all, he looked down on the Demon Slayer Corps from the bottom of his heart and was not afraid of any ambush.

But even so, the cowardly Kibutsuji Muzan still gathered all the demons in Japan and marched towards the mountain where the Demon Slayer Corps headquarters was located.