I Became a Genius Mechanic at the Academy

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Energy.

The efficiency of energy is closely tied to the scale of human civilization.

The level of civilization varies greatly depending on how efficiently energy is used.

For instance, when humanity learned to harness ‘fire,’ civilization began to grow explosively.

By cooking food with fire, humans could efficiently supply nutrition.

This had a profound impact on brain function.

Providing sufficient energy to the brain, which requires many nutrients, improved intelligence to the current level.

Moreover, as people gathered around fire, they began to form communal cultures.

Metal processing using fire developed, leading to the creation of various weapons and tools.

By harnessing the energy of ‘fire,’ science was born.

Thus, humanity discovered the ‘steam engine’ through energy in the form of fire.

They successfully converted thermal energy into mechanical energy.

As a result, the industrial revolution occurred, enabling mass production and allowing civilization to leap to its current level.

…And so, in the modern age.

Humanity has entered the information age with the discovery of electricity, communicating even with space using waves.

Thus, the discovery of energy and its increased efficiency has had a colossal impact on humanity.

【…How could you still have such power? Weren’t you supposed to have exhausted your ‘Heavenly Being’s power’?】

In this context, Edgar could respond to Melfirn’s ridiculous question.

The energy revolution is the very result of the present.

The fusion of modern science and magic engineering has maximized energy efficiency…

As a result, he has managed to preserve a significant amount of the rarest resource, the ‘Heavenly Being’s power,’ until now…

He could respond.

“Guess you should have rolled a bit more. You’ve got so much strength left, right?”

However, there was no need to reveal all of this.

Edgar smirked and mocked Melfirn, causing him to stiffen his expression and say,

【…You can only laugh like that now.】

Swish!

Melfirn’s arm extended.

His hand split into hundreds, and countless cold weapons flew forth.

Among them were the faces of hydras and Karaan spitting fire.

[Devil Suit, final model activated]

At that moment, Ed’s suit began to evolve into a new form.

The suit, which was practically a rag, switched to a completely new combat mode based on countless combat data.

First, the plasma separation device was activated.

An energy blade spiraled from Edgar’s wrist, slicing through the incoming cold weapons like ripe fruit.

The plasma blade neutralized the enemy’s barrier and rushed toward Melfirn’s arm. In mere seconds, the split weapons shattered in midair.

Next, the hologram mirror system activated.

Dozens of holograms surrounded Edgar, replicating his appearance.

These holograms mimicked Edgar’s movements, looking real, while Melfirn’s attacks poured in uselessly, unable to distinguish which was real.

These hologram mirrors also reflected the enemy’s attacks, redirecting his weapons back to him.

The nano shield generator offered protection.

Whenever Edgar faced an unavoidable attack while twisting through the air, a thin layer enveloped his body, absorbing the impact.

This shield was made of elastic nano fibers, absorbing shocks upon impact and storing energy, which could be used for counterattacks.

The stored energy was converted into the suit’s high-energy railgun, allowing Edgar to strike Melfirn’s core with a single powerful blow.

And then, the most innovative system, the prism optical network, was activated.

Edgar’s suit absorbed and refracted light from the surrounding environment, becoming invisible for a period.

This invisibility not only rendered him unseen but also absorbed energy waves from the suit’s surface, nullifying even Melfirn’s sensors.

Melfirn’s attacks flailed in the air, while Edgar strategically repositioned himself invisibly, seeking an opportunity to counterattack.

Finally, the quark accelerator cannon activated.

This device was the strongest weapon integrated into Edgar’s suit, using particle physics to disintegrate surrounding matter into ultra-fine particles and release them.

He aimed precisely between the pouring cold weapons toward Melfirn and pulled the trigger.

Invisible powerful particles sliced through the air, penetrating Melfirn.

Edgar’s suit harmonized the multiple systems to evade all attacks, utilizing the enemy’s strikes against him.

As the battlefield fell silent, he finally stood before Melfirn and whispered,

“When was that cold weapon ever a threat? Who would fall for such a simple attack?”

【…Don’t get cocky. My power is infinite.】

No sooner had Melfirn’s words ended than his arms sprouted again.

Additionally, more arms emerged from his shoulders and sides, bringing his total to eight pairs.

A total of 16 enormous arms split into hundreds, unleashing countless cold weapons.

【If you can dodge all my attacks, I’ll simply obliterate the entire space!】

Melfirn declared, just as he claimed.

His 16 arms, each over several meters long, split into hundreds of cold weapons, destroying the area.

In other words, no matter where he dodged, the attacks would inevitably hit.

“Gah!”

Indeed, Edgar’s suit was taking damage from Melfirn’s indiscriminate onslaught.

Sparks flew as the suit’s metal cracked, the outer layer damaged in several places, exposing wires inside.

As the bombardment ended, there stood Edgar in a half-destroyed suit, and Edgar’s group barely managing to maintain a protective barrier around him.

Melfirn smiled, sensing victory.

【As I said, your laughter has faded. Now try being cocky again.】

Edgar slowly rose.

As Melfirn noted, Edgar’s face was frozen, losing all composure.

To anyone watching, he obviously appeared defeated, causing Edgar’s group to grow anxious.

A sense of helplessness gripped them as they could only watch Edgar again.

“Pfft!”

At that moment, Edgar suddenly burst into laughter.

Melfirn, who had been grinning ominously, raised an eyebrow and narrowed his eyes.

Is he out of his mind? What could he possibly be relying on to put on such a facade?

“It’s so predictable that it’s honestly a bit absurd. It’s exactly going as we simulated. Isn’t it?”

In response to Edgar’s question, Eve, appearing in hologram form, nodded.

[Yeah. Everything is going as planned. I just confirmed that the winning probability has risen to 99.9999999999%.]

Winning probability of 99.9999999999%?

Melfirn looked at Edgar with disbelief.

No matter how you looked at it, his suit was in a state where it couldn’t function, and the remaining Heavenly Being’s power should also be gone, so how could he possibly—

【…??】

At that moment, countless nano fragments began to fly in from somewhere.

Soon, the nano material clung to Edgar’s suit, restoring it to its original state in an instant.

Edgar, now donning the suit’s helmet again, said,

“Your expression is quite surprised. This is an infinite regeneration nano suit. It can convert countless mechanical parts from the battlefield into nano materials and supply them.”

Edgar’s suit had evolved using the powers of the Heavenly Being.

Its function was to convert every mechanical component on the battlefield into nano materials for the suit.

In other words, he could convert every mechanical device worn by millions of allied soldiers into his suit.

“So from now on, it’s a sort of war of attrition. If you can endure until all the machine parts on the battlefield are spent, you win. If your regeneration and stamina run out before that, I win. Let’s have a proper match.”

Edgar’s declaration was akin to racing to see who has better endurance.

【Then it’s your loss! Didn’t I say my power is infinite?】

Melfirn confidently claimed victory.

But this was an inherently unreasonable competition.

After all, Melfirn was using his own body to launch attacks.

Just think about it.

Melfirn had to extend his thousands of split arms.

This process consumed a significant amount of energy.

Moreover, those arms had to be transformed into various cold weapons, which also consumed staggering amounts of energy.

Not to mention the energy required to regenerate damaged limbs.

Directly using one’s body as a weapon requires a vast amount of energy.

-Click.

On the other hand, Edgar merely had to press buttons inside his suit.

His suit’s systems and Eve’s advanced AI assisted him in this as well.

The advanced technology that fuses modern science with magic engineering assists in all calculations, enabling efficient combat.

-Click. Click. Click.

Thus, Edgar’s clicks were top-of-the-line clicks.

While Melfirn was sweating profusely, generating immense kinetic energy, Edgar was comfortably breezing in air-conditioned bliss, clicking buttons—how could this be a fair match?

【This is… the future I saw…】

Thus, Melfirn met his end in the most miserable way possible.

As his stamina gradually waned, he slowly realized he was losing.

Once all of Melfirn’s energy was used up and he could no longer regenerate…

Edgar mentioned the only way he could win, revealing Melfirn’s downfall.

“Melfirn, in the end, your arrogance and pride led to your defeat. If you had ignored me and targeted the allied forces first, I might have lost.”

【…】

“Well, it was already in the calculations that you wouldn’t be able to do that. I designed it so that you all would be obsessed with me.”

With that, Edgar fired the repulsor gun.

Melfirn’s exhausted body detonated, revealing the essence contained within.

[If we destroy that, everything will be over.]

A black crystal emitting an enigmatic light.

As Eve noted it needed to be destroyed, Edgar nodded.

This core was the very embodiment of the evil will that sought to engulf this world, the source of all wickedness—destroying it was essential to end everything.

“How do we destroy that…?”

However, Enya could recognize it at a glance.

The Grand Duke’s essence was a relic that could not be destroyed by any weapon.

In other words, like Sauron’s ‘One Ring’ that could only be destroyed in the fires of Mount Doom, the Grand Duke’s essence couldn’t be destroyed by ordinary means.

“This should do.”

Nonetheless, Edgar was completely unconcerned.

He expended most of the remaining Heavenly Being’s power to activate the suit’s quantum collapse imploder.

This technology utilized the principles of quantum mechanics, making the fundamental unit of matter unstable to cause destruction.

The quantum collapse imploder utilized the particle accelerator within the suit to accelerate particles to nearly the speed of light before releasing them at the target.

In this process, the particles dismantled the molecular bonds of the target, fundamentally breaking down the structure of the matter.

Ultimately, the target would crumble from the inside.

Edgar launched a small energy orb formed in his palm toward the essence.

Though small, the orb contained an immense amount of quantum energy compressed within.

The moment the orb touched the essence, the quantum collapse imploder activated, destabilizing the essence’s molecular structure.

Though the essence resisted, the imploder was dismantling its bonds at the quantum level.

As a result, the essence compressed from within, its form gradually blurring.

This effect leveraged the uncertainty principle of quantum mechanics, simultaneously destabilizing the essence’s position and energy.

A few seconds later, the essence could no longer hold firm and fully collapsed.

The massive energy mass vanished, leaving no trace as if it had never existed.

There was no material that could withstand being broken down to the particle level, no matter how powerful a relic it might be.

“Gyaaaah!!!”

As the source of all evils, the black crystal was obliterated, the monsters that had lost their master began to flee in all directions.

The allied forces, on the verge of collapse, sighed in relief and plopped down.

The Grand Dukes of the empire and command ranks from various nations began to gather where Edgar was.

Standing tall in the center of the battlefield over the fallen body of the Lord of Hell, Edgar turned to everyone and said,

“Haah… I’m hungry. Let’s head home now.”

After everyone sighed in relief, they burst into laughter.