They won the Holy Grail War, but this turned out to be the Virtual Tree Universe.

Chapter 37 Light Cone and Conceptual Mystic Code (Seeking recommendations and continued reading)
Muzan Kibutsuji died, succumbing to the dual oppression of money and poison.

The drug that Tamayo injected into Muzan Kibutsuji was a deadly poison to him.

As for money, Dan Lei's life force conversion array was incredibly powerful, using the spiritual veins of a mountain as its source, a massive amount of silver as its base, and a large amount of gold and gems, which completely drained the already weakened Muzan Kibutsuji.

This attack directly targets vitality, and given Muzan Kibutsuji's understanding of the detrimental nature of abundant life, he simply cannot resist it.

At the same time, without vitality, the so-called Blood Demon Technique naturally cannot be released.

Moreover, even if he could release it, it would be useless. The protective barrier formed by the spiritual veins of a mountain is not something that Muzan Kibutsuji can break in a short time, and its fate will not change.

After Muzan Kibutsuji died, all the demons he transformed into, except for Nezuko who had already been turned back into a human using the human-transforming drug and Yushiro who was transformed by Tamayo, all disappeared on the spot, including Tamayo.

However, Tamayo said that she had no regrets after watching Muzan Kibutsuji die, and smiled as she disappeared into Yushiro's arms.

At the same time, Muzan Kibutsuji's curse on Kagaya Ubuyashiki also disappeared. Unfortunately, the damage caused by the curse would not disappear. His vision could not be restored, and his body was still severely damaged. Even if he took good care of himself from now on, he probably wouldn't live past fifty.

However, Kagaya Ubuyashiki took it in stride, saying that he originally didn't have many days left to live, but now he has gained several more decades, and he has no complaints whatsoever.

As for Dan Lei, he obtained a magic crystal extracted from the life of Muzan Kibutsuji.

However, this black and red magic crystal was filled with resentment and curses, and Dan Lei sealed it away after just one glance.

Actually, Dan Lei originally planned to use Muzan Kibutsuji's magic crystal to try and get the Holy Grail, since it was still unknown whether he could take anything from this world with him.

But upon seeing this thing, Dan Lei said that if he used it to charge the Holy Grail, his own Holy Grail would probably turn into a black Holy Grail on the spot.

Therefore, Dan Lei only had one option: to seal it up and take it with him.

Subsequently, Dan Lei officially bid farewell to the Demon Slayer Corps by announcing his departure from the country.

Of course, Dan Lei only kept the gems from the materials used to set up the life force conversion array; he didn't take the remaining gold and silver.

Without the gem as a node, and with the energy lines already destroyed by Dan Lei, this thing is definitely beyond repair unless another magician from the Type-Moon universe travels over.

However, the remaining gold and silver are still precious metals, so Ubuyashiki wouldn't go bankrupt after defeating Muzan Kibutsuji.

After leaving the Demon Slayer Corps, Dan Lei went straight to Mount Fuji and violently extracted the spiritual vein, which is considered the lifeblood of Japan, to power the Holy Grail.

Mount Fuji is the largest ley line node in Japan, and charging the Holy Grail here is extremely efficient.

However, high efficiency is relative; this surge took eleven years.

Fortunately, Danlei, being a long-lived being, remained emotionally stable, and he had not wasted these eleven years. Under the training of Sasaki Kojiro, he had managed to become a master swordsman.

According to Sasaki Kojiro, Danlei's talent for swordsmanship was average, but he was persistent. His current swordsmanship skills would be considered those of a well-known swordsman in his time.

Of course, Dan Lei was extremely skeptical of Sasaki Kojiro's claim of being a swordsman, because he had never won against him in close combat.

However, once the Holy Grail's trans-travel magic was fully restored, Dan Lei did not hesitate and immediately left this world.

After all, it's impossible to become a Tenripo Sword God in the Demon Slayer world; the upper limit here is really limited compared to the Star Iron Universe.

The feeling of traveling back to Star Iron was no different from the feeling of leaving. After entering the Root Time Tunnel, Dan Lei found himself back in his workshop in Golden Man Alley in just a second or two.

To be honest, this time travel took a total of thirteen years, and Dan Lei was a little worried that when he returned, he would find that thirteen years had also passed in Luofu. But even if thirteen years had passed, Dan Lei still had to come back. He had already thought of a reason in the Demon Slayer world: he would say that after obtaining his memories and destiny, he couldn't help but explore the Sea of ​​Memories, and ended up getting trapped inside.

Fortunately, when Danlei returned, he found himself still in his familiar workshop, surrounded by spotless talismans and weapons he had prepared before setting out. Clearly, not much time had passed since he transmigrated.

Slightly relieved, Danlei looked at the clock in the room and confirmed that his journey to Xingtie this time was instantaneous.

This is clearly the power of the Memory Path. The Memory Path can manipulate time and completely control when one returns to this world.

However, this is good news. Danlei said that at least he doesn't have to worry about being discovered when he travels through time again.

After tidying up the talismans and weapons at his feet, Dan Lei entered meditation again, entering the space within the Holy Grail to see if the Holy Grail had changed after this journey.

As a result, upon entering the sea of ​​flowers inside the Holy Grail, Dan Lei immediately discovered that the place had become lively.

Of course, the liveliness here doesn't mean the space has come to life, but rather that there's an extra projection and a lot of cards.

The projection was a phantom of Sasaki Kojiro. After studying it, Dan Lei concluded that it should be a backup of his spirit origin. He could use this backup to temporarily summon his clone for a short time, or use it to set up a summoning circle to accurately summon the Heroic Spirit's main body.

Simply put, this is Fujimaru Ritsuka's ability: to temporarily summon uncommunicable Heroic Spirit clones during battle.

Of course, the combat power of the Heroic Spirit clone depends on Danlei's own magical power and the original upper limit of the Heroic Spirit, and at present Danlei can only temporarily summon Sasaki Kojiro.

This ability is quite good, Dan Lei was very satisfied, and then turned to study the cards around him.

Then Danlei was pleasantly surprised to find that these cards were all light cones and concept costumes.

There's not much to say about the concept costume; it mainly features Dan Lei's experiences and personal items in the Demon Slayer world. It includes puppets, gems, and even the Sun Wheel Greatsword and the magic stone that Dan Lei later named Demon King Crystal.

When Dan Lei returned to Luofu, he brought back nothing but his clothes. He had thought that all the items he had acquired in Demon Slayer were gone, but now it turned out that these items had basically been transformed into Mystic Codes and appeared in this space.

So Dan Lei picked up the smaller number of light cones that he had never seen before in Luofu.

Yes, in the Star Iron Universe, light cones are actually very rare. In the game, March 7th explicitly stated that this thing is a rare item that is only available within the Star Peace Corporation.

Therefore, Danlei lived in Luofu for nearly two hundred years and never saw this thing.

Moreover, no one in Luofu has ever been heard of possessing the Light Cone, because there are still several Memory Seekers who want to steal memories in Luofu imprisoned in the Prison of Shadows, and there is also the serious criminal "Dream Eater" in it.

As you can see, even the Black Tower Space Station only has one three-star Skyward, which shows how rare this thing is.

However, Dan Lei now has two light cones.

One recorded scene shows Muzan Kibutsuji with a fierce expression, and the name of his light cone is "The Malice of the Demon King".

This light cone effect is very much in the style of Muzan Kibutsuji. When attacking an enemy, it absorbs the enemy's life force, and there is a chance to turn the enemy into a demon when you kill them.

Another recorded scene surprised Dan Lei. It showed Shinobu Kocho sitting at the entrance of a courtyard, seemingly waiting for someone to return. The light cone was named "Quietly Waiting".

The effect of this light cone is to enhance the holder's resistance to abnormal statuses.

(End of this chapter)