When I told him about the traces that were in the ropeway cage, his brother lay his eyes down sadly,

"... well. Have you gotten that far..."

I said.

He then headed to Prince Ellens to gather the people involved.

In the castle cafeteria, officials were gathered to investigate the mutilator (ripper) case.

No, that may not be accurate.

Prince Ellens II, Chief of Investigations, Sergeant Corsey Knights Commander, David Zafran Culver Royal Detective and his assistant, me.

Naturally, these four others on this occasion were the current King Vistogard I, the First Prince of Ilfreed and Princess Ilbara.

And behind it stands father Alfred, head of the Royal Knights (Royal Guard). Next to Prince Ilfrid was also Brother Berhardt, a squire.

Up to that point, it's okay to say that's all the attention this case is getting, but for some reason Mr. Popolus (Steph's real father), president of the Culver Chamber of Commerce, is also called, and he's sitting uncomfortably in the corner seat of the dining room.

- Okay, so you wanted to talk about the Ripper case?

The king opens his mouth and turns his gaze to Brother David.

"Yes, we are gathered here today to uncover the truth about the Mutilator (Ripper) incident that caused the King's Capital to go off."

Brother David said that clearly.

"I heard the mutilator (ripper) was dead, but was that different?

The king asks quietly.

Since the King has made detailed reports, including about the reincarnated Hitoshi Kizaki, we naturally know that some of the cleaver (ripper) cases remain unsolved.

Combined with the proceedings and fact-checking, I guess you dare ask.

"No, that's not a mistake either. But that doesn't mean you're right."

Prince Ellens takes over Brother David's elusive words and says:

"In short, there were multiple Rippers. To be precise, besides the real cleaver (Ripper), there was a copycat cleaver (Ripper) who imitated the M.O. Isn't that right, David?

"Exactly. Thank you for your supplement, Your Highness."

When Brother David finally thanked Prince Ellens for saying so, he began to explain the backdrop of the case together.

"Firstly, a real cleaver (ripper), but this turns out to have been a girl named Eliaria, the son of Marquis Sargastine and considered an abomination. She was the culprit in the first to third and seventh cases."

I watch them all snort, and Brother David continues.

"If she was the only one, the cleaver (ripper) case would have been done with something simpler. Even though they used ancient relics (artifacts), they all appeared on horse legs and should have been captured by the proud Knights of Officers of the King's Capital.

- But it didn't. "

"Because there was a copycat, wasn't there?

Prince Ellens hammers.

"Exactly. By imitating the M.O. of the Ripper, someone tried to serve his purpose while impersonating the Ripper. It wasn't just one, it was two."

"... I'm asking about one. Kizachitool, did you say? You were a reincarnator from the same world as you there, Edgar. Unlike you, Edgar, the man is a messenger of the evil god Monugonese."

"You're right, Your Majesty. The reincarnated Kizakitool is killing two people by making them look like cleavers (rippers) to feed the demons he keeps. That's what we call the Sixth and Eighth Incidents at Investigation Headquarters."

"I hear your family, including your brother, Edgar Culver, took over Kizakitol and the others there."

Prince Ellens says so and looks at me.

"Honestly, it's hard to believe, but there's also a sighting of the sergeant knights. You're gonna have to believe it."

The Prince's words sounded somewhere confusing.

Well, I'm six years old and I look eight or nine. The feeling of a prince would be more normal.

"If so, do you mean the fourth and fifth cases"

Says the King.

"Exactly. And these two murders look similar to the scene. It's only natural to think of it as the crime of someone different from Ripper and Kizakitol."

"But these two incidents are happening the same night, in the Old and New Towns. Needless to say, you can't come and go between the two cities at night when the Golden Gate Bridge is being bounced up. Have you solved this mystery, David?

Prince Ellens makes up for what Brother David said.

"Yep. Solved."

"So, the killer of this double murder, too?

"Absolutely."

"... can you tell me without hurry, David? You didn't tell me because you were going to reveal it to me, the head of the investigation. I resent you."

Brother David meditated often and took a small breath before saying:

"Right. There will have been nothing but a lot over this period. Whoever commits the murder by imitating the Ripper..."

"Wait, wait. How could I have been called here? Am I supposed to listen to this?

That's what Prince Ilfrid said and broke into your brother's line.

Prince Ehrens sees Prince Ilfreed like he did, but Prince Ilfreed hasn't noticed.

My brother answers without looking distracted.

"Yeah, I don't mind. Instead, I'd be in trouble if you weren't there. Whatever - the killer is in here."

Brother David's line, which was released with plenty of stash, frightened the same face that gathered in the dining room.

"Hey, what...? Are you saying there's a madman in here who did the Ripper thing!?"

Prince Ilfreed makes his eyes black and white and screams like that.

Quite a (...) act (...) and I think it's sneaky.

"- It's David. No, it's Royal Detective David Zafran Culver. Tell everyone here their name."

That's what the king said with a rugged face.

Oh well... did the king thinly expect this to happen?

Brother David turns to the king and turns back to the same.

Finally - will I say it?

Yes, there are those here who imitate the Ripper and seek to seal the mouth of an inconvenient opponent.

Who the hell is that?

I have a theory, too.

Brother David finally uttered the name, remaining the usual cold look with no shards of affection.

"The killer is Prince Ellen, you."

Yeah, well, the killer was Prince Ilfreed... heh!?

"Oh... am I the killer?

Prince Ellens rose from his seat with a noise.

"Yes."

Brother David nodded without changing a single complexion.

To that look, Prince Ellens understands Brother David's seriousness.

"... are you serious, David? If you put a murder charge on the royal family, I'm sorry.

"That would be if the suspicion were wet"

"... too bad, David. I thought you were my friend."

I snapped in a tone that didn't make Prince Ellens sad or angry.

In the meantime, I couldn't keep up with my understanding.

How can you be Prince Ehrens, not Prince Ilfreed!?

Where the hell did your brother get the wrong reasoning?

No, am I the one who was wrong?

While I was out of my mind, Prince Ellens was rebuilding his attitude.

"If that's what you're going to say - why don't you let me get an answer? How the hell could I have committed two murders across both old and new towns in one night?"

Prince Ellens says with a look that just bites.

Brother David said this without a proper answer to that.

"I called the fourth and fifth case - double homicide - an 'impossible crime' initially. As His Highness has just said, it is impossible to carry out the killing in both cities overnight. Unless you can fly in the sky."

"Too bad, David. I can't fly."

Prince Ellens sarcastically with his convulsive expression.

Brother David continues with utter disregard for the prince's words.

"But it can't be that it's impossible. Because double homicide is actually happening. Because any of the preconditions that make the case impossible are torn."

"Well, I guess so."

Prince Ellen throws up what he says is normal.

"So what is that torn prerequisite? We will not open all of the reasoning process on this occasion. The answer I arrived at would suffice. That's because the Ripper needs to be able to get to and from both old and new cities."

"... I don't know. What's this all about?

Ask like Prince Ilfreed was in a hurry.

"Let's say it from the answer. The killer, after committing two murders in the Old Town, magically moved one body across the coast to the New Town."

That's what Brother David laughed at.

Enjoy the harmony rubbed on your lines.

"Magic!? What are you talking about! I can't believe the magic of transferring things away, that's all that comes out of a gaga story!

Prince Ellens screams with his face red, but I agreed.

I did something with magic - then no one will be convinced of this.

"But His Highness can use such 'magic'. There's a special magic that moves things from one point to another."

Prince Ellens seemed stiff to Brother David's assured words.

"No way are you..."

"Yes. The magic cannon your Highness is studying (...). With that, it is possible to carry the body across the shore."

"Ah...!

I was leaking my voice unexpectedly.

Yes, I totally forgot, but Prince Ellen is researching magic cannons.

"The Culée Chamber of Commerce warehouse, which became the scene of the fifth incident, is located on the seaside of the new town, facing Lake Monocanus. Meanwhile, the lab of His Royal Highness Ellence is located by the sea in the Old Town, facing Lake Monocanus.

In other words, a warehouse and a laboratory are in a position to face across Lake Monocanus.

The lake is the only place between the two points, so it is possible from His Highness's lab to aim the magic cannon directly at the warehouse of the Culver Chamber of Commerce. "

As for location, your brother is right.

I just thought of the fourth incident as the Old Town and the fifth as the New Town, so I missed the fact that the fifth site and laboratory were "adjacent" across the lake.

I remember the sight I saw in the lab.

The lab had one wall removed, so that Lake Monocanus could be seen even from the indoors.

The seaside edge of that vision is the sand state that the prince used to experiment with firing. A few dozen degrees or so from that sandy state, the warehouse of the Culver Chamber of Commerce was indeed supposed to be in sight.

The warehouse stands with its back to the lake. And the scene of the fifth incident was where we were turning our backs!

It is indeed possible to shoot a body into that wall over there with a magic cannon.

- No, wait, wait, wait. That's impossible! This trick has a fatal flaw!

I guess I came to the same conclusion as I did, Prince Ellens said, laughing at Brother David with his nose.

"Come on, don't say you can't.

David, you've bought up too many magic cannons. You saw it, didn't you? The range of the magic cannon is as good as that sand state, and we can't let it get to the opposite shore.

Even accuracy is not that high. Whatever you're shooting into the middle of the army, it's not very, but impossible to imitate the exact point you're after. If that's what you can do, it's already been adopted.

Mostly, bullet bodies are the problem. How do you say you fly soft things like necks, limbs and guts with magic cannons? Even if you gave up a hundred steps to reach the opposite shore, the fireball you used to fire your body will burn black. "

Prince Ellens clasps his face and argues.

The look doesn't even look like it belongs to the guy who was caught up with it, but on the contrary, he looks dressed in wet clothes and exhilarated.

Brother David said quietly.

"… let me answer your last question. You can't really fly soft things like the human body with a regular cannon. But if you pack it inside the ceramic shells developed by His Highness, it's possible to fire it out."

…………

Prince Ehrens remains silent, sneezing his jaw arrogantly and urging him to continue.

"Next, the range, but the range of the magic cannon is longer than Lord Ellen's self-declaration."

"Stupid. You saw it, didn't you?

"Yes, I've seen it. On your visit to His Royal Highness's lab with Edgar, you deliberately (...) showed it to me. Indeed, the shells released from His Highness's magic cannon did not reach the new town and landed in the sandy state in front of them at a distance."

"That's the maximum range. Are you going to tell me you're going to increase the amount of magic you pour into Fireball? If you do that, the shell will melt, and the barrel, the bullet body, will not withstand the impact. You can actually do it and you'll see, if you think it's a lie, you can try as many."

"Indeed, as you said, as an output, that must be close to the maximum. But the output is not the only parameter that determines the flying distance of the magic cannon. Your Highness showed us using the magic cannon at its maximum output. However, the firing angle was fixed to about thirty degrees (...) and remained (...)"

"Ah!"

I accidentally raised my voice to Brother David's words, which were released with a distorted lip.

"Ed, to you, you know what this means, don't you?

"... the cannon should have a firing angle of 45 degrees for maximum range"

"Yes, if you actually experiment, you can see that increasing the firing angle from 30 degrees to 45 degrees increases the range by more than 10%"

Brother David says so and stares at Prince Ellens.

Prince Ellens said in a wandering manner.

"is the first ear! If you knew how to do that, you're using it!

"No, what Your Highness did not know (...) is (...) not (...). Your Highness is a study enthusiast. Thankfully you are loading my writings as well. His Royal Highness couldn't have read the recent book Physics - The Law of Motion, which was greeted with shock by the academic community."

"Huh!"

"Physics - The Law of the Movement," my brother said, is a science book written by my brother based on my previous life's knowledge and knowledge unearthed from the library labyrinth, with content equivalent to the classical mechanics of what I said in my previous life. Naturally, basic theories were also introduced about ballistic calculations.

I recall the conversation between Prince and Brother David the first time I interrupted Prince Ellen's lab.

'If you're going to take that theory, you don't have to be a necromancer for anything. That is what it means to be a demon, a ghost, an apostle of evil gods, whatever. You will be allowed to substitute any number for the' algebra 'called the Ripper… you will not be able to get the' solution 'of who the Ripper (Ripper) is as it is'

That's what I'm talking about.

In his questioning about this cleaver (Ripper), Prince Ellens was obviously responding based on Brother David's writings, Principles of Algebra.

If the prince is reading his brother's Principles of Algebra, which was discussed in academia, he is likewise likely reading Physics - The Law of Movement, which was discussed in academia. Instead, it would be unnatural if I hadn't read it. Anyway, the prince is studying magic cannons. It's odd that you haven't read Physics - The Law of Motion, which has a statement about ballistic computation, but you're reading Principles of Algebra, which isn't directly linked to research.

"Well, that's... I was too busy to read it! By and large, your writings are too elusive! I want you not to think everyone's as smart as you are!

Prince Ellens says like a reverse gilet.

... Yeah, well, I'd love to agree with that opinion.

"I don't think Your Highness, who can read the more abstract 'Principles of Algebra', can understand 'Physics - The Law of Movement'. And then I wrote it so that the reader could understand that I was smarter than others."

"... that's a disagreement. I'll see your intellectual arrogance there."

Prince Ellens tells me to throw up.

But I do wonder how your brother put it, but it's true that you focused on clarity in writing that book. At least Melvi and Jeremiah are at an understandable level if they strive. Steph... gibberish on the way up.

"Together, I can say that the livability with which His Highness was reading Physics - The Law of Motion is high. For example, the range of the magic cannon will extend by more than 10%. It also seems small, but it is a critical distance that can be reached beyond the sand states and across the shore. Instead, Your Highness designed (...) that magic cannon so that if you lower the firing angle (...), it will not be (...) critical or (...) across the shore. That's why I was wondering. Compared to Edgar's prototyping guns and cannons, His Highness's magic cannons are probably too short in range..."

The Houwa modification I gave Brother Chester has a range of 800 meters. Even the cannons I had prototyped once could have managed to exceed 300 meters. It was just over 200 meters from the lab to the other shore, so even my prototype cannon can reach enough.

Of course I had previous life knowledge. But Prince Ellen's magic cannon, a brilliant researcher, can only give me a flying distance below my prototype. It's really unnatural if you ask me.

"Damn... that would mean, unfortunately, I don't have enough power"

"I don't think so, but this will only be a watershed argument any more. Anyway, it is likely that His Royal Highness knew how to increase the range of the magic cannon."

Prince Ellens shut up to Brother David, who sums it up.

I'll ask my brother instead.

"So, your Highness deliberately shot you at a firing angle of thirty degrees then?

"Yes, to imprint us that magic cannons will not reach the opposite shore.

We were invited to His Royal Highness's lab just after His Royal Highness said he would take command of the investigation into the Ripper case. From this point on, His Royal Highness has been counting sin on the Ripper. "

"Was that a fabric stone for that..."

The same gaze is directed at Prince Ellen.

Prince Ellens, who became the focal point of the throne, said in advance.

"Yes, but that's not the only problem! Magic cannon firing involves considerable noise! If you fire a magic cannon in the middle of the night, the surrounding residents will notice how much the lab is off the Old Town!

That's not all! It's the windy season! There must have been a strong wind on the night of the incident! There's no way you can accurately fire shells into a warehouse on the other bank in that!

There was a rush seeping into Prince Ellen's words.

But what you're saying is good. Indeed, if I didn't solve those two problems, my brother's hypothesis would have been an airborne theory on the desk.

However,

"If that's the answer, I'll know."

When I said it, he looked at me like Prince Ellen had been played.

"Both, you just have to use [wind magic]. I hear the prince is an excellent wizard who can use two attributes: [fire magic] and [wind magic]. It should be easy for a prince to use wind attribute magic to tie the line of silence, or to let the arrows wind together so that they are not subjected to air resistance."

The knot of silence is the magic I use when I train to shoot firearms, too, but it was originally taught to me by Mother Julia. According to my mother, if you use the wind there, you know the technology.

Also, me and Brother Chester are improving gun shooting accuracy by letting the arrows put the wind together and bullet the magic that eliminates air resistance. Fighting Pestle in the meantime also helped.

This magic is not as good as the silencing kingdom but is known to the high wind wizards, and it is not as difficult. In fact, I also taught Brother David that I was handing this magic a pistol for protection, but he swallowed the trick right up. Prince Ellens says he has the talent of a court magician when it comes to magic. I don't think I can use it.

Plus, Prince Ellen says he can handle multiple magic at the same time, so he should have [simultaneously activated] skills. "Fireball" for silencing junctions, erasing air resistance, and firing. It was no surprise that these three magics could be exercised simultaneously.

"The first element that complicates ballistic calculations is the influence of the wind. You can ignore that, so if you're even careful with direction and angle of fire and firing speed, you'll be able to do some shooting exactly as you aim. Of course, it would be easy to say, and it would be quite difficult if daily research and drilling were not a basement."

Only to the words of the sober brother David, Prince Ellens gets stuck in words.

"So, but there was a blood-drawn mark on the scene! How can you use a magic cannon to draw a mark on a wall? Answer me, David!

The prince originally had red white skin and his eyes running bloody.

"Is that a blood mark? That's proof that the magic cannon was used. Without a mark, it would have been doubtful that the body would have been moved from the Old Town to the New Town by any means, even if it wasn't a magic cannon."

Actually, I used to think that if legendary metamagic existed for joking too... but beyond the presence of blood letters at the scene, the cleaver (ripper) needs to show up at the scene and draw blood letters. Even if we could use metastatic magic, it wouldn't make sense unless we could transfer ourselves as well as things.

In the first place, if such amazing magic could be used, there would be a more rational way to dispose of a corpse. The easy thing is to shift them over the lake or the ocean after weighing them down.

That's why I thought a different trick was used from Brother David's reasoning...

"It's a trick! It's not an argument!

"Yes, indeed.

But the blood mark story is simple.

The killer - that is, His Highness, Ellens - used a spell he brought from Princess Irvara's lab.

By the time you shot the body in with a magic cannon, you drew the same mark that the Ripper (Ripper) had left at the scene with a spell letter beforehand.

And after shooting the body in with a magic cannon, through magic on the spell letters, he raised a mark of blood on the wall... "

Princess Irvara's curse lettering can float letters through magic, even from far away. Using this nature, Princess Irvara wondered if she could communicate in secret over a long distance. As much as I was trying to use it for communication between states, so if it's about the distance between the old town and the new town, the spell will activate without any problems.

Princess Irvara, placed on top of the story, opens her mouth.

"David told me to tidy up the room... and there were no more magic pills to use as ingredients for the spell letters..."

I watch Princess Irvara's room when it used to explode. It was a messy, messy room where things piled up.

Surely that dirt room wouldn't notice it any time soon if it ran out of stuff. Inventory management also said that it only records what goes in.

- Shoot the body across the shore with a magic cannon.

When they explain it this way, they even seem to say it's more of a simple plan.

Then why didn't you notice, because Prince Ellen, who directs the investigation, was skillfully misleading?

I was almost convinced of Brother David's reasoning.

But...

"Let me just say it's a lot of imagination, David. He wants to tailor me to the killer no matter what. [M]

However, even if the method was possible, there is no evidence that it was indeed carried out. More than that, it's only one possibility in the end "

Brother David hoisted the edge of his lips to the words of Prince Ellen, who only devours.