Abandoned in the mountains, I was adopted by a lizard ~I mastered magic and surpassed my parents, but I didn't know they were legendary ancient dragons~ - Chapter 53

Chapter 53   Test run

“What kind of magic tool is it?”

“Here it is.”

In front of the president, who was holding his breath, I took out an N2 Blast from my storage magic and showed it to him.

“This device sprays a large amount of liquid nitrogen at nearly minus 200 degrees Celsius, instantly extinguishing any fire.”

Pointing to the turret, I explained.

“It can also fly at high speeds, so it can reach fire sites in an instant.”

Next, I pointed to the propeller and added this information.

“I see…?”

The president’s reaction was a mix of understanding and confusion.

“The speed at which it can reach fire sites is certainly groundbreaking. That alone should greatly reduce fire damage. However… what did you call that liquid? I’ve never heard of this method of extinguishing fires…”

Ah, so liquid nitrogen isn’t known here.

“This is what it is.”

Thinking it would be faster to show him than to explain in words, I alchemized about 10 milliliters and placed it on the desk.

“Just touch it for a moment—if you touch it for too long, you’ll get injured, so just a quick touch like this.”

I demonstrated how to touch it, intending for him to feel its coldness.

When you touch liquid nitrogen, it instantly vaporizes and forms a gas layer between it and your skin, so touching it briefly won’t cause injury. While I could heal frostbite if it occurred, it would be a disaster to injure a client in the first place. This way, I taught him a safe method.

“…! What… what is this coldness…!”

President Hicero, after cautiously touching it, widened his eyes and murmured in astonishment.

“In simple terms, think of it as a liquid with a much lower temperature than ice. Using this is more efficient than extinguishing fires with water.”

“I see… How wonderful…!”

The president seemed thoroughly pleased.

With this explanation, he would probably agree to the implementation. However, it might be more impactful for him to see it in action at an actual fire scene.

“Would you like to see it in action?”

With that in mind, I made the suggestion.

“In action…? Of course, I’d love to see it, but it’s not like a fire will conveniently break out…”

The president responded with a puzzled tone. But there was no need for concern. I wasn’t proposing this because I could predict fires.

“Don’t worry. We can build a test house and set it on fire.”

“What…?”

“If you come outside, I can show you.”

“Well, if you say so…”

He seemed a bit skeptical, but he agreed to come along. Now, let’s get everything ready.

◇

We arrived at a spot about five meters higher than the rooftop. After stepping onto the roof, I created stairs with a physical barrier spell, and the president climbed up.

“The view is great… I feel like I’ve already witnessed some incredible magic just getting here, but… yeah, I’ll stop thinking about it.”

While the president mumbled to himself, I proceeded with the preparations. All I needed to do was create a small shack with alchemy magic. It was a simple structure of iron bars with wooden planks attached, the kind of makeshift construction that would make any Bamboo Inside Construction employee scoff, but it was sufficient for this experiment.

“First, here’s the experimental shack.”

“Wait, where did that come from?”

“I made it on the spot. Alchemy magic.”

“I… I see… I’ll refrain from commenting.”

With the explanation done, the next step was ignition.

“I’m going to light it now.”

Using fire magic, I set the shack ablaze, carefully controlling the flames so it wouldn’t turn to ash instantly.

“Whoa, what a blaze… In an instant, it looks like a fully engulfed building…”

“Alright, activating it now.”

With the situation ready, I activated the N2 Blast. As soon as its propeller started spinning and it took off, the N2 Blast targeted the shack.

Immediately, a massive flood of liquid nitrogen enveloped the burning shack. In an instant, all that remained was a slightly charred shack.

“Wait… That fire was put out so quickly…?”

“This is the N2 Blast.”

“This isn’t just fast fire extinguishing… it’s on another level…”

The president stood frozen, eyes wide in astonishment. It seemed he was genuinely impressed, which was a relief.

After staring at the shack for a while, the president regained his composure and asked a question.

“By the way… there’s one thing I’m curious about. What happened to all that liquid nitrogen that flooded out? It seemed to disappear as soon as the fire was extinguished…”

Oh, I hadn’t explained that yet.

“The nitrogen molecules created by the N2 Blast are tagged with an identifier. Once the firefighting operation is over, all nitrogen molecules with this identifier are nullified by the N2 Blast’s functionality. So, nothing is left after the fire is put out.”

This is why, despite the seemingly excessive amount of liquid nitrogen released, the shack wasn’t wet, and there was no liquid nitrogen spilling over the edges of the physical barrier and falling to the ground. There’s a specific reason for this.

“Why would you do that?”

“Liquid nitrogen evaporates at an incredibly fast rate, even at room temperature. If a large amount is left to evaporate, the volume expands rapidly, saturating the area with nitrogen. This would lower the partial pressure of oxygen, causing people around to suffocate. To prevent this, the nitrogen is reclaimed once the fire is out.”

I recall reading in the book that featured this magic tool a sad story in a column: “The developer suffocated during a trial run due to liquid nitrogen. As a result, this nitrogen reclamation safety mechanism was added.”

Well, those lessons are being put to good use.

“I don’t quite get it, but… it seems you’re taking safety seriously.”

“Exactly.”

Finally, I took out the floating magic tool and added,

“We plan to link this with the floating magic tool for fire monitoring, allowing it to respond anytime, anywhere, 24/7. This will further reduce the damage to buildings by eliminating reporting delays.”

When we descended from the barrier and returned to the president’s office, he spoke first.

“To get straight to the point, we will definitely adopt this magic tool. The compensation will vary depending on the actual profits from the fire insurance, but… you can expect it to be quite substantial.”

“Thank you very much!”

With the successful adoption, I delivered the four N2 Blast units and the floating magic tool to the president.

However… “The compensation will vary depending on the actual profits from the fire insurance,” he said. In that case, it might be worth getting involved in the marketing side of things to maximize profits.