Shikkaku Mon no Saikyou Kenja~ Sekai Saikyou no Kenja ga Sarani Tsuyoku Naru Tameni Tenseishimashita~

"That water, it's poisoned...?

'What, if you drink this, they'll take your life, won't they?

'Oh. The guy you're aware of doesn't drink this water.... which is why we fear that the enemy is putting up a vigilance net using a device that senses' this guy who hasn't drunk water '

The humans who drank this are shown differently in 'passive detection' and so on because they become mixed with a slight amount of life force in the magic that releases from their bodies.

If the Demons had a surveillance net all over town and elsewhere, humans who haven't drunk this water would be quite noticeable.

When I say magic reduces magic release, I've never gone beyond making the original magic reaction natural.

Cover-up magic is cover-up magic, and sometimes people like Zaridius are broken when they are opponents.

Drink this water in that regard and you can deceive other eyes than the guy who knows his face just walking in grandeur.

Stranger faces are suspicious in rural towns, but they're common in streets and big cities.

'So you pretend to be thoroughly deceitful... But are you okay with me drinking this water? No matter how much it's for disguise, it's not gonna turn into poison, is it?

'The vitality of being sucked is insignificant, and it's okay because it's not otherwise toxic. If anything happens, it's easy to detoxify.'

After drinking the water, I feel a slight loss of magic in my body… natural recovery is faster if this much loss of vitality, so I don't actually lose vitality.

A toddler or an old man might be cut off some vitality, but if he still doesn't get sick, it shouldn't even be fatal.

If you're not a person who can handle vitality to some extent, you won't even realize that you're being drained of vitality.

This is probably the concentration adjusted to be so.

'Um, I don't really feel comfortable drinking what I find to be a mix of poisons, but I don't know'

'It's a lot better than being attacked by demons, and people in this country drink this all the time, so you'll be fine'

'Does this work for dragons, too?

While we talked about that, the three of us drank water.

Whether this poison works on dragons was a delicate thing... but it probably works on dragons as well, as life is released a little bit from Illis as well.

Most of all, the vitality of Ilis is out of digits, so I've concentrated and drank 100,000 times the poison of this water, though it would be almost unaffected.

'But human tap is amazing, isn't it? I can't believe we're delivering water to every corner of a country this big...'

On the way to the sixth source, Illis said this.

The water grid has been around for a long time... but Illis apparently didn't know about the water grid.

Well, it wasn't until I was reincarnated that Illis started being actively involved with humans, so I can't help it.

"I don't hear about the Cyhil Empire being such a tech power, but was there someone awesome?... I mean, when did you make that?

"There are all kinds of theories about when the Imperial Great Water Supply was created... but I think that ancient civilization made it, or if not, Matty, you made it."

... somehow Lurii began to advocate the theory I had made.

At times, I don't think it's possible.

"No, I don't think I was born yet when I had a water grid."

'Yes, but no one else can make it... Because if you try to carry water across the empire, you have to carry a huge amount of water from the bottom up, right? Isn't it about Matty and ancient civilization that can make such a high-performance magic pump?

I see, did you say it in a magic prop technical sense?

... but the truth is, both of Lurii's theories are correct.

Because this water grid is a relic of ancient civilization, but I'm also involved in its construction.

I magically strengthened the outer walls of the water grid because it would be catastrophic if the water grid was broken or poisoned inside.

This water grid still exists today, possibly because of it.

... Though I didn't expect this water grid to be used to gather Demon life after thousands of years.

If I had known this was going to happen, I would have planted all sorts of traps in the sixth source.

The source should have planted some defenses for intruder protection, but the entrance defenses probably blew up with an explosion in the magic fusion furnace.

"The Cyhil Empire Great Water Supply is definitely a relic of ancient civilization.... Well, I think the source is actually the fastest way to look at it '

'Even if I say I'll actually take a look... the source must be tight security, right?

'Security will naturally be tight. Well, let's see how it goes so we don't find out, and then we'll think about it'

Fortunately, where we are now is not so far from the sixth source.

From now on, you will be able to arrive during the day.

◇

Then, a few hours later.

We were safely approaching the sixth source.

Where the sixth source is, it looks like a normal town.

Some taverns seem to be for adventurers, while others look like pedestrians carrying fruit in carriages.

But... that sounds like a trick.

The box carried by the pedestrian is double-bottomed, and beneath the double-bottomed is loaded with magic props thought to be for intruder detection.

Adventurers gathered in the tavern are certainly adventurous if you look at just one person, but they all wear much the same gear.

Occasionally there seems to be a pattern of adventurer parties unifying their gear, but that's just about protective gear at best.

When it comes to being unified to weapons, it would likely be the military or something like that.

… many think that the township buildings were also built to protect the source.

Makes it look like a regular inn, with places like army cramps dotted all over town.

It's a normal town from the outside, but if you let it in at all, you'll soon find out this town is an anomaly.

Perhaps not a single ordinary person lives in this town.

It was supposed to be a normal town on the map, but that would be camouflage to hide the fact that this town is an important defensive base.

Any ordinary person who gets lost without knowing it should be driven back for some reason at the entrance.

'Hmm, is it hard to get any closer...'

'It doesn't feel like a normal town... But I don't see any demonic magic. With cover-up magic, you're going to get close without being noticed'

Lurii mutters so, confirming the magic around him, about a kilometer away from the entrance to the sixth source.

Lurii is right, I don't see any demonic magic around me.

"… to the source itself. Do you want to examine the ground a little first, as going later?"

He said, "I'll be there later." What are you doing with this guard? Can you do that?

"Forced breakthroughs would be easy, but it would be hard to squeeze security so they wouldn't find out.... but it's easy if you go through the back door '

Listen to my words. Alma gives me a questionable look.

"... the source is an ancient ruin, isn't it? How do you know the back door?

"That's the kind of detective magic I have."

Of course, I actually just remember the blueprints.

There may have been some additional modifications during the period since I was reincarnated, but the source hasn't been able to make major modifications, so it wouldn't have changed that much.

Detection magic can also be topographically investigated depending on how it is used, but even if I use 'passive detection' with my magic sensing abilities right now, I can only tell about the shallow underground situation.

Using Active Detection, which unleashes magic from you to explore the surrounding situation, you will also be able to grasp the current terrain, but if you do that, you will be caught in the alert net in one shot.

... You may not find out if all the enemies are normal people, but you wouldn't expect that much sweet security in a situation where the Demons are likely to be involved.