Simulation: Start with one person

All kinds of fantastic thoughts appear and disappear in my mind...

About half an hour later, in the exquisitely decorated room, Fang Rui was lying on a single-colored quilt, stretching out his right hand to touch the tatami outside the quilt, feeling a rough and uneven touch...

Well, it's quite comfortable.

At the same time, some trivial matters emerged in my mind. Decisions about some things were quickly made, while others could not be decided. During this period, the sleepiness gradually increased...

The next day, Fang Rui slowly opened his eyes, his hazy sleepiness gradually dissipated, and his blurred vision gradually became clearer. He stared at the unfamiliar ceiling for a while, and then lifted the quilt.

Get up, wash up, eat...

Discuss some matters with Uyashiki Yōya, and then set off to return to Mount Sagiri, together with Tomioka Giyuu...

In Saagiri Mountain, it has been nearly a day since the two masked men started special training for Kamado Tanjiro, and Tanjiro... has made almost no progress.

It is not easy to change some details of the breathing method. After all, Tanjiro has learned the breathing method for a long time and has already formed a habit...

It is not easy to make corrections.

As for the swordsmanship, there was also no progress, but the physique... there was no change at all.

What difference can be made in one day?

The only change is that the number of people living here suddenly increased by dozens. Lintaki Sato has prepared a little less food recently. He is thinking about cultivating fertile land and going to the town to buy food.

"Creating fertile land..."

Fang Rui rubbed the side of his face, agreeing with Takashi Sakonji's idea, and then said: "I will give you some seeds of special vegetables and fruits later. Remember to plant them. Eating those vegetables and fruits for a long time will have a beneficial effect on the body." benefit."

"it is good."

When these words came from the mouth of Fang Rui, who had great supernatural powers, Rin Taki Sakonji believed it very much and agreed without any hesitation.

One thing solved, then another: "If I want to build a workshop for making weapons, where do you think would be a good location in Mount Saagiri?"

"There is a stream in Saagiri Mountain. If you want to build a workshop, you can choose it near the stream." Rinataki Saru replied recently.

"Is it far from here?" Fang Rui did not make an immediate decision.

"It's not far, only a minute or two away." Kintaki Sakonji explained, "The water used for daily life is obtained from that stream."

Fang Rui nodded thoughtfully and said to himself: Since it is the source of domestic water, then the location of the workshop should be a little biased!Prevent water pollution, anyway...

For me, who has mastered the magic, making pure water... is very simple.

Therefore, the location of the forging workshop was chosen next to the wide, flat open space where Tanjiro practiced his sword skills on a daily basis.

As for why I chose it here, it was naturally because it was convenient for testing knives.

Now that the decision had been made, Fang Rui took action.

Putting his hands together, the ground shook, the trees twisted, and an ordinary forging workshop appeared in the forest at an extremely fast speed.

Afterwards, a clone appeared next to Fang Rui and looked at the main body for a while.

"You will stay here from now on. I will come back every once in a while to collect research results, ores and other items."

As a tool man, the clone had no objection to this and nodded gently.

After that, Fang Rui left the Demon Slayer World and set off for another world.

That's right, he didn't stay in the one-person world because the "company's" preparations had not yet been completed and the various materials were not enough to create a floating island.

Therefore, he decided to continue traveling and look for materials along the way.

………………

The Moon World is a relatively high-level world, with both legendary fantasy species and gods... all kinds of wonderful magical creatures, as well as modern magic full of the flavor of the times...

All kinds of precious materials are also available.

In general, it is a world that is very suitable for "purchasing goods".

But the only problem is that there are two guards in the "warehouse", so problems may arise.

but……

According to past experiences, the items he collected were not taken out of the world where they belonged, and the products that appeared in the simulated mall were 1:1 replicas.

'There should be no problem. '

With this thought in his mind, Fang Rui looked around, collecting information to confirm where he was.

The moon world is more complicated. It is not a single world, but is composed of many parallel worlds. Even the gem man who can travel through parallel worlds has difficulty giving an accurate number on how many parallel worlds there are.

Therefore, the little information Fang Rui possesses can be described in one word: not worth mentioning.

Picking a direction, Fang Rui moved straight forward.

After a while, he left the forest, and the scene in his field of vision also changed accordingly.

A city is divided into two by a river. On one side is the old city full of the atmosphere of the times, and on the other side is the new capital that is booming and moving towards a new era.

"...Is this Fuyuki City?"

Fang Rui's tone was not particularly certain. He thought for a moment and then moved forward. The target was "Fuyuki City".

After some investigation, Fang Rui confirmed that this place was the famous Fuyuki City, and determined that the time point was before the Fourth Holy Grail War. A more specific time required more detailed investigation.

"I'm a little interested in the Holy Grail, but I'm even more interested in what's inside the Holy Grail! All the evil in this world..."

"How can something that represents a certain aspect of the world be of low quality?!"

"I really want to study it! If there are some results, it will definitely help me go further, but..."

"The danger is very high!"

"It's easy to be eroded by malice~ After all, it's the malice of the entire world that gathers together. We need to find a way..."

Muttering softly, Fang Rui headed in the direction of Yuanzang Mountain. The location of the Holy Grail is in the cavity in Yuanzang Mountain. To be precise, the entrance to the area where the Holy Grail is located is in the cavity in the mountain...

Fang Rui has already figured out how to limit all the evil in this world, but before putting it into practice, preparations must be made.

In short, first collect the corresponding information, and then use the "star number" to calculate to see whether your plan can succeed.

In the cave, Fang Rui's vision broke through all the obstacles and reached the area where the Holy Grail was. The aura of magic power was quite abundant. He carefully analyzed the magic power for a while and found that it could be transformed and absorbed...

The reason may be that the nature of many energies is similar.

Then, I set my sights on the Holy Grail...

His holy appearance revealed a very strong malice.

It is quite similar to the legendary Holy Grail. It seems natural that the wine cup that once contained the blood of Jesus would be cursed.

"........."

The moment his eyes fell on the Holy Grail, countless information poured into Fang Rui's mind. Although there was a lot of useful information in it, the malice was more intense, enough to make him ignore the rest of the information.

"It's really noisy!"

The spell was deployed and the psychic defense wall was erected.

The malice that shocked the soul was blocked by the defensive wall. Fang Rui looked at the Holy Grail carefully, looking at every aspect from its shape, pattern to material... carefully...

An object made entirely of magic power. It looks like metal, but is actually non-metal... a fantasy material made of magic power.

Speaking of which, the Holy Grail is indeed another name for the "wishing machine". It seems reasonable to use it to create special metals that only exist in fantasy.

That being the case...

"...You have to think carefully about how to purify the Holy Grail!"

Fang Rui withdrew his gaze, turned around in the dimly lit cave, and said thoughtfully: "The simplest way is to transfer all the evil in this world, from one container to another. The only problem is …”

"How to transfer all the evil in this world? After all, as someone who is burdened with all the evil in this world, he is not a character willing to cooperate!"

After leaving the cave, the vision suddenly became brighter, and Fang Rui cast his gaze towards the clear blue sky.

"Speaking of which, in the moon world, there are quite a lot of Holy Grails. Some have problems and some have no problems."

"Let's work on both ends! Look for the traces of Gemstone Man. If this one doesn't work, use another one..."

With that said, Fang Rui withdrew his gaze and headed towards the town...

There is still some time before night, so let’s collect some information before night falls!

According to his investigation, it has been determined that the time point is the beginning of the Fourth Holy Grail War. It has been confirmed that the people participating in the Holy Grail War have already arrived, but there is still one position vacant.

"...Is it Caster?"

Fang Rui is not particularly sure about his guess, and his memory about this matter is very vague, but...

Except for the Master of the Caster Group, the other six Masters are all members of the magic family, and their Master qualifications have been determined long ago. In other words, the Master of the Caster Group is an ordinary person who is the last to obtain the Master qualification. The highest possibility...

"That is to say, there is a new addition to tonight's divination content..."

On the other hand, now that he knew the timeline, Fang Rui decided to solve some things on the way, such as...

Matou Residence is a very famous mansion in Fuyuki City. On the one hand, it is very old and owned by a prominent family in Fuyuki City. On the other hand, the style of the mansion is somewhat spooky. There is a "haunted house" in Fuyuki City. called.

Fang Rui's eyes glowed with a faint white light, and he could clearly see the magic barriers and trigger-type magic traps set up throughout the mansion.

"Oh~ As expected of a magic workshop that has been in business for hundreds of years, the risk factor is high!"

"Unfortunately, it's of no use to me."

With that said, Fang Rui thought for a while and decided what spell to use.

The art of pointing, using your fingers to make something change.

As Fang Rui ordered his troops and generals, a series of changes occurred in the Matong residence.

The green grass turned into soldiers holding weapons, marching towards the house with uniform steps...

The leafy trees twisted and turned into twisted monsters with tentacles dancing wildly, and their sanity dropped wildly.

The ivy on the wall turned into green snakes, climbing quickly on the wall, and the sound of spitting out messages came and went like a wave.

The transparent glass softened and turned into translucent beasts, crawling into the mansion.

"Your Excellency is a little arrogant!"

The sound of the flapping wings of mosquitoes suddenly sounded, and a black mass of mosquitoes rushed out of the mansion and faced the monsters.

The two sides started fighting, with blood and flesh flying everywhere, and it was extremely cruel.

A magician's strongest moment is when he is in his own magic workshop.