We went back to the tenth floor last night, stayed overnight, left early in the morning, and returned to earth in the morning.

I'm home.

"Ah, welcome home. How'd it go?

Naruse, who is completely familiar with the office, welcomed us as if he had been working here for a long time.

I've checked it out.

"Huh? Did you get the mining?

Naruse-san looked surprised at us who were getting unknown skills so easily.

"Yeah, well, I can handle it."

We reported that Genomos dropped mining and confirmed its effects on the 20 floors.

"And you used it!? Are you okay!?

The use of unknown skills can be dangerous.

I don't think so, because we have an appraisal right now, but I feel like I've been using it with all my name since before I got it.

Ultra-recovery, like immortality, wasn't strange, even if it was a slime trap.

Beginner bravery? No, it's pure scientific curiosity.

Many scientists have come to use their bodies to see what has happened in history. "Crazy" in front of scientists most of the time.

The scientist tends to be a risk-taker if he or she is absolutely certain of something to try and the result.

As long as you use it yourself, it does not conflict with the Helsinki Declaration (* 1).

Werner Forsman, a Nobel Prize in Physiology and Medicine awarded by cardiac catheters in 1956, attempted to insert a urinary catheter into the right atrium from the vena cava of his left arm during his residency.

The experiment led to the hospital being fired, but 30 years later it will be awarded the Nobel Prize.

Recently, Michael Smith researched himself as a laboratory bench in the year the dungeon appeared.

When I was stabbed by a bee, I tested where it hurt the most.

The most painful one was the hole in his nose, but he was proud to receive the prestigious prize in physiology and entomology for 10 trillion dollars.

Even if it was the Zimbabwean dollar of 2015 at the Ignobel Prize.

Of course, it is different from the Canadians who won the Nobel Prize for Chemistry in 1993.

Though I may not have had enough of my mind right now, I can only try things that are inconclusive when I think about them.

"Yes, except for the mineral drops."

Naruse exhaled reassuringly, but at the next moment she said, "Did you check the drop? I was surprised.

Only twenty floors.

I removed the vanadium ingot in disguise from my backpack.

Because I didn't talk about storing or storing it in a boulder.

"It was vanadium that dropped in 20 layers."

"Vanadium!?

Vanadium is a rare metal used in the chemical domain where we worked, but most of the demand will be used as a steel additive.

The price should have been less than 10,000 yen per kg. Gold costs less than 5,000 yen per gram, so the digits are literally different.

"? Sure, it's soaring, but it's not that expensive, is it?

"Senpai, that's a story of low purity. It's a dungeon, so don't you think this is at least a Fourning-class ingot?

Fournine is 99.99%.

An old audio maniac would have used a 6N or 7N cable for his speaker cable.

Since the name is written as vanadium in the drop item of the dungeon, it would be a 100% vanadium ingot if I were to screw around.

I see. Maybe it's 100% possible. "

"Right. In reality, there is no such metal vanadium"

Vanadium is a resource that exists on Earth, but the quality of the deposit (* 2) is low anyway.

Moreover, an efficient and groundbreaking method for obtaining high purity metal vanadium has not been established. The higher the purity, the more expensive it will be.

"Even 99.7% to 99.9%, there is a difference between 80,000 yen and 110,000 yen per kg."

"Wow, what a surprise."

"The purchase price in tons. If it's a retail sale, 100,000 yen will be spent on 4N cubes from Kanto Chemical."

A million kilos is amazing. A drop is like a heel potion (1). I mean, isn't it 10 times worse?

Still, it's not far from the money.

"Regardless of the price, as a resource, it is biased against South Africa, China and Russia, so it is the big news from the perspective of stable supply and security."

Oh, there's a point of view. Certainly important as a nation.

"But after all, it's a kilogram ingot. Isn't it hard to meet the demand big?

"According to data from a previous company, the annual demand for metal vanadium is about 1,000 tons. Except, of course, ferrovanadium, which is the center of demand."

"If we're going to do it all with monsters, we need to crush 3 million metal vanadium?

When I heard that, Naruse looked strange.

"Huh? That's the calculation...."

"Normally, the drop rate is about one in three," Miyoshi added.

Hunting more than 8200 a day… Even if you challenge a team of 100, the battle against an average of 82 a team seems spicy. That layer, it's cold.

"If you're just trying to do it with Yoyogi, there's quite a dungeon in Japan," Naruse said.

Speaking of which, that's quite a mystery.

Of the 36 or 37 areas around the world, about 80 are said to have been discovered, but there are nine dungeons in Japan, including ultra-sharf depths that have been trampled.

Rare metal. I'm sure there's a reason for the bias, but I'm not sure at the moment.

There are many untouched places in other countries, and they are thought to have just not been found, but I think it is too biased.

Nonetheless, only Yoyogi will produce vanadium in 20 layers, but it is certain that it may be in another layer of other dungeons.

"Anyway, the contents of RU22-0012 have been proven."

"At least 20 layers."

At that time, Miyoshi's phone vibrated.

"Oh, I'm sorry. It looks like Kai Senpai." He went away to the dining room.

"So, is it Christmas?

Mr. Naruse may not feel comfortable with the timing of the report to his boss.

"That's how much it takes to get ready. However, even if you're not in such a hurry, I think you'll get quite a few mining pieces if you're a Yoyogi."

After all, it's 1/10,000. The incidence of orbs is exceptionally high. Besides, there's an infinite surge.

It would be easy if you had a high level of magic. I think we can bring in some powerful firearms in that place.

"How do you know?

"This time, we got it in three days."

"Only Mr. D Powers... No, I understand. Speaking of which, we're almost done here, too."

Naruse gave me a tablet full of documents.

According to it, there are currently 266 inscriptions reported, of which 161 are like dungeon manuals, 82 are like history books, and the remaining 23 are meaningless.

And it seems that there are about 40% of things that seem to be doubled in content.

"266 sheets is more than I thought."

"On average, one dungeon is discovered every year."

Oh, I see. Eighty pieces every year, but 240 pieces every three years?

"When I was told that, I felt a little less."

"In fact, the deeper you go, the more often you discover, the more likely you will be to pace up in the future."

I don't know if it would be confusing to wear more clothes, but Naruse shrugged her shoulders.

Some monster drops were discovered, but others were hidden somewhere on the floor or just dropped on the ground in the mountains.

"As far as the properties of what has been translated are concerned, it seems that what comes from around special individuals, such as area bosses, is often an important element."

RU22-0012 is an area boss, and BF26-0003 was found around a unique individual that suddenly appeared like a hecate.

The former is an Ore Drop and the latter is an inscription with information on the Food Drop.

That's what this is all about.

Naruse displayed a page. It said GB26-0007.

"This came from a dungeon on the Isle of Man, but what a description of the dungeon's safe area."

It described a safe area and a safe layer that occurs after 32 layers in the dungeon.

"Safe layer means the entire layer is a safe area, right?

It seems so.

"Senpai, if we find such a layer, we can build a city, absolutely."

Miyoshi returned to the conversation after the phone call ended.

Cui san?

"We're talking about an example device. I'll see you tomorrow for now."

I nodded back to the safe area.

"Problems with land use in the dungeon are likely to flare up again. Naruse-san, you'd better put the rules in place by now."

Naruse nodded softly and said, "I'll try to raise it inside."

Other important inscriptions, such as US01-0001 and AU10-0003, which supported the Dungeon-Passage theory and described the role of the dungeon, have not yet been listed.

As I glanced at them, I noticed that words that I was not familiar with in reality appeared many times.

"What is magic?

"Fiction is a magical element, right?

Miyoshi replied immediately, but this word was replaced by this concept by Naruse, who gained an understanding of other languages.

That's probably why Naruse's vocabulary is relevant.

No, I want to know what Naruse looks like.

"I see... I think I said something to embody the power of the dungeon."

I thought it would be good if it was atom or element, but I added that it was likely to be misunderstood.

The element that embodies the power of dungeon atom. Abbreviations: Dunham. Hmm, it looks like a popular robot anime.

"If you want to embody the power of the dungeon, isn't the factor good? D-factor. The Latin word comes from the word" actor. "

"That's good. Hire"

"Ah, but it's in the Psychological Review this summer, D Factor."

Miyoshi searched for a study published by a joint research team of Copenhagen University, Worm University and Coblenz-Randau University, which said it had common factors for dark personality traits. Dark Factor, I guess.

"It's normal for an abbreviation to wear. ATMs are terrible.

Well, yes.

"So, according to AU10-0003, the dungeon is its magic factor, D-Factor? Looks like a tool for spreading."

"Eh, is that okay?

I heard Miyoshi look anxious.

"If there is a D factor, it is. The impact it has on the human body is not particularly problematic from a public health perspective."

It's information from the entire Explorer medical exam.

There was no significant difference in disease prevalence when compared to those who did not.

"So, from a point of view other than public health, there's a problem."

"The problem is... what do you think of Yoshimura-san's level, status, and so on?

"I suppose that means that you think the level and status are related to the phenomenon that can be said to strengthen the Explorer. Is that the problem?

"Yes, but there was no evidence that the Explorer was particularly aggressive or mentally affected. It was just about getting stronger or getting stronger, but..."

"The degree was flying away."

Naruse nodded loudly.

"The top rankers now easily repaint the world record for track and field."

I bet you are.

Now with AGI-200, I feel like I can run 100 meters in less than 9 seconds, maybe less than 2 seconds. If you're not careful, you could be treated like a monster.

"If the magical phenomenon that happens inside and outside the dungeon is due to the D factor, then neither the skill orbs nor the potions would have happened without it."

If so, the chemical analysis of the potion will not reveal the phenomenon.

After all, the main body that causes the phenomenon may not be in it, but it is probably not a chemical component.

"So, using skill orbs and potions in a dungeon is very effective..."

It doesn't look like it's going to be too much fun.

In fact, the effect of Asha's time was amazing. The D factor concentration would be much higher in the dungeon.

In three years, although it has traveled too far to the world, the potion effect applied to people far away from the dungeon and not possessing a D card may have been much less than that.

"The monster is made of D Factor and will spread when defeated. The black light that comes out when you knock it down is a D factor..." continues Naruse.

Speaking of which, even when you use a skill orb, light enters your body.

"I wonder if the status is the amount of D factor that I've captured in my body, or something to use it well..."

I clapped my hands with bread.

"In short, there is a mysterious substance called Factor D, and it is obviously being used beyond the dungeon. That's why the world we're connected to has to be that way? Because I'm in trouble, I guess I'm trying to build a dungeon and scatter D factors to improve the environment."

"If you can do that, you can do it all at once. Why are you being so detached?

"Maybe they're trying to coexist with the natives. After all, it looks like we're trying to make humans dependent on dungeons with all sorts of perks... I don't think we'll be in such trouble if we're going to destroy them. Probably."

"Senpai, do you think humans can do something like this in real life, whether they're willing to destroy it or not?

"Not at all."

Isn't that right?

In other words, it's all three inches across the chest.

"Well, Dungeon-sama says we have to attack the tunnel and wait for the first contact."

"Why aren't you walking here from the other side?

You must be shy.

I joked and said so, but Mr. Naruse didn't look well.

"I can see just a little bit of a reaction from the humans who saw this… why countries don't release Russian information to the public"

"Is it okay to publish that?

"When you have to make an important decision, if it's accurate, it's better to have it, no matter how bad it is."

That's what I said. I put the tablet down.

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