I Became a Genius Mechanic at the Academy

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Nano Suit.

Ed has been researching to develop the Nano Suit, which could be called the final evolution version of the suit, during his spare time.

Ultimately, the true essence of the Devil Suit that Edgar pursues is ‘utility’ that can respond to any situation.

So, he developed a Nano Suit that can transform into different forms whenever the user desires.

– Chwa-rurururururuk····!

Thus, the result infused with his blood and sweat was appearing.

Thousands of ‘carbon nanotubes’ commanded by the assembler wrapped around Ed’s entire body, forming the Nano Suit.

【Arrogant! No matter who you are, without wearing ‘that armor’, you won’t stand a chance against us!】

However, the ‘demons of the Seven Deadly Sins’ were not ones to sit idly by.

What they feared was only Ed, who wore the ‘Doom Suit’.

They immediately charged at Ed, swinging their weapons.

With an enormous sound of explosion, their blunt weapons struck Ed’s suit.

– Ggak!

However, their attacks, capable of easily tearing ordinary steel, bounced off in a most pathetic way.

This is understandable, as the material of the Nano Suit that Ed wore is ‘carbon nanotubes’, which is 100 times stronger than steel.

【…Why?】

But the Seven Deadly Sins had no idea about this; they stared wide-eyed at Ed, who appeared unscathed.

Ed extended his gauntlet forward and spoke.

【Do you know that the graphite in pencil lead and diamonds are both made of the same carbon atoms?】

【What…?】

【Even though they’re the same carbon atoms, their properties can change completely depending on their structure. Graphite is less durable because it’s stacked in hexagonal plates, but diamonds are tightly connected in a three-dimensional structure, making them very strong.】

【…What nonsense are you talking about?】

【In short, the carbon nanotubes that make up this suit are a more sophisticated and stronger form. You can’t pierce this.】

– Kiiiiiing!

As soon as Ed finished speaking, a white flash erupted from his gauntlet.

The white light emitted from the suit struck the bodies of the Seven Deadly Sins in the blink of an eye, sending them flying several meters away.

However, the creatures that had grown strong by taking over the city immediately rose and shouted.

【It’s still weak! With that level of power─!】

【Who said this was the end?】

But before they could finish their words, a ‘small repulsor shooter’ detached from the back of Ed’s suit.

So, the eight meticulously crafted parts, separated, began to charge the same repulsor beam that Ed’s gauntlet used.

【Try to block this.】

– Kiiiiiing─!

– Kiiiiiing─!

– Kiiiiiing─!

– Kiiiiiing─!

– Kiiiiiing─!

– Kiiiiiing─!

– Kiiiiiing─!

– Kiiiiiing─!

– Kiiiiiing─!

Simultaneously, the charging sound emanated from the eight ‘small repulsor shooters’.

And soon, they didn’t just stop at firing once; they unleashed massive energy continuously like lasers.

– Kwaaaaaaaah─!

Thus, the repulsor beam stretching from Ed’s hands and the repulsor beams fired from the eight ‘small repulsor shooters’ focused on one target.

It was the Sin of Gluttony.

The demon of sin that incessantly encouraged human greed, turning them into disgusting lumps of fat, was pierced right through its thick belly.

【Kraaahhhhh─!】

Thus, before the sin had even been revealed for a minute, it met a painful death with a scream.

The massive body melted from the high-energy and high-heat, muscles and skin ruptured, and its insides spilled out, suffering irreparable damage.

Finally, the wounded beast rolled its eyes back, collapsing to the ground.

– Thud!

【……】

【……】

In the distant future, a follower of the Seven Deadly Sins with the potential to grow into one of the Great Demons.

However, this time, Ed dealt with such a strong opponent with the ease of eating cold porridge.

Witnessing the death of their fallen comrade in utter despair, the remaining Seven Deadly Sins howled in fury and immediately prepared to counterattack.

【Alright! Let’s go all out too! Perform the ‘Ritual’!】

And their counterattack was to perform a ‘ritual’.

In other words, it meant inciting the emotions of ‘wrath’ and ‘greed’ in the humans who had become their slaves to gain the power of injustice.

– Aaaaah!! Please, save us!!

– I want to gouge out the eyes of the one who pointed a finger at me and show the innards to their parents! I want to rob their wealth and make them my slaves!! Fulfill my desires!!

Thus, the humans of the city, enchanted by the demons of the Seven Deadly Sins, began to shout in mad voices.

Screaming the names of all those they hated, they displayed their ugly desires of wanting to seize others’ property and wives.

【Khuhuhuh… Behold. This is the power of the humans you sought so desperately.】

As the entire city boiled with emotions of wrath and greed, the bodies of the Seven Deadly Sins began to grow larger.

Their muscles swelled, their faces grew more ferocious, and the wings that sprouted from their backs spread wide.

They had reinvigorated themselves, absorbing the desires of fifty thousand souls.

Finally, the Sin of Greed spoke.

【This is the result of your own actions. The humans controlled by the ‘ritual’ are supplying us with their life force, even to the point of exhausting it. It’s your fault that fifty thousand humans in this city will die.】

The Sin of Greed mocked Ed, claiming that the deaths of the humans in this city were due to him.

In fact, the humans, seized by wrath and greed, were gradually losing their life force.

Their faces became haggard, as if they had been awake for nights on end, and their eyes were progressively losing their vitality.

They were expelling the emotion of wrath and greed, even at the expense of their own life force.

【Now, there’s only one way to defeat us. That armor carries the strength to reach our king. Dress in that armor and face us. That’s all that remains for you.】

At that moment, the Sin of Wrath pressured Ed to wear the ‘Doom Suit’.

A suit that could become the strongest limited to demons.

It demanded he equip the suit created solely to face the Lord of Hell.

Because the Doom Suit, fueled by all the emotions experienced in previous encounters, unleashed explosive destructive power, and those emotions would eventually be consumed.

The time available to use the Doom Suit was limited.

Therefore, it urged him to expend his strength to face the Great Duke.

【There’s no need to use the Doom Suit to deal with pests like you.】

But Ed, who was saving the Doom Suit for facing the Great Duke, would never accept the proposal of that demon.

Then the Sin of Wrath grinned widely, saying.

【Then perish! Your arrogance will lead you to death!】

Whoosh!

In an instant, the Sin of Wrath closed the distance and reached out a fist towards Ed.

But at that moment, massive amounts of nano-particles rushed to Ed’s right arm, forming a shield.

Soon, the demon’s fist struck Ed’s shield, and an enormous shockwave spread throughout the area.

The impact was so great that the ground shook.

– Kugoogogogogogogong!

Just extending a fist created a force that whipped up a sandstorm and shook the earth’s surface.

Certainly, the Seven Deadly Sin had grown to a level that was on a completely different scale from before.

The Sin of Wrath twisted its mouth sinisterly and spoke.

【You felt it too. If you don’t use a shield, you cannot block my attack─】

– Kiiiiiing!

But at that moment, a blue light began to emit from the shield.

And the enormous energy beam that erupted from the shield pushed the Sin of Wrath away.

– Kwaaaaaah───────!

【Kuhk!】

The Sin of Wrath locked its expression in shock as the massive energy beam extended from the shield.

However, as eight small repulsor shooters joined in, its expression began to contort.

No matter how strong it had become, it was impossible to withstand eight concentrated energy beams.

【A gap!】

But at that moment.

The Sin of Greed turned around and attacked Ed.

No, it was more accurate to say it attacked the small repulsor shooters floating behind Ed.

With that one strike, two small repulsor shooters were destroyed and plummeted to the ground.

【Khuhuhuh! I think I can withstand that energy beam now!】

While Ed was dealing with the Sin of Greed who had turned around to attack him.

The Sin of Wrath, having absorbed more rage, had grown even larger, showing a newfound confidence.

It was saying that even after being hit by the repulsor beam that had put it in a pinch, it wouldn’t be fazed.

– Whoosh!

However, those words were not just bluffs.

With a speed greater than before, it lunged towards Ed.

【What will you do! We grow stronger as time passes!】

Thus, a fierce battle began.

As the ritual progressed, the speed of the Seven Deadly Sins increased, and their strength grew more potent.

Ed was facing both of them at once, gradually losing his small repulsor shooters.

It was at the moment when the number of remaining small repulsor shooters reached zero.

【Your defeat is at hand!】

– Kwaang!

Before Ed could even react, the demon’s fist struck Ed’s face.

As a result, Ed’s body was flung several meters away without resistance, crashing into the ground.

The helmet covering Ed’s face shattered completely, leaving Ed’s face exposed.

The Sin of Wrath approached Ed, stating.

【Kekekek… Just a rumor-spouting fool, huh? Was that all? Just this weakling posed a threat to our king?】

Step… step… step…

The Sin of Wrath approached the unconscious Ed, mocking him.

Then, standing right in front of Ed, the Sin of Wrath extended its hand forward, gathering magic.

It was preparing a finishing move to end Ed.

【Wait a moment.】

At that time, the Sin of Greed intervened.

As the Sin of Wrath frowned and turned its head, the Sin of Greed said.

【No, no. This isn’t how we finish him off. He is a body that has attracted the king’s wrath. How about turning him into our slave?】

The Sin of Greed proposed making the unconscious Ed their slave.

Then, the Sin of Wrath pondered for a moment, grinning widely, and nodded.

It seemed the king would prefer leaving the weakling alive in a miserable state over simply killing him.

【Alright…! If we can make him a slave, we might gain the king’s favor while rebirthing as greater demons…! A splendid proposal!】

Most importantly, if they could turn Ed into a slave and extract ‘wrath’ and ‘greed’ from him, they’d gain immense strength.

They could garner enough power to become great demons in one sweep.

Thus, the Sin of Wrath twisted its mouth in delight as it envisioned Ed being reduced to a slave.

Then it summoned a spell formation above Ed, chanting a demonic incantation.

Just as they had enchanted the humans of this city with ‘wrath’ and ‘greed’, they aimed to use the same spell on Ed to enslave him.

【Bow down to Wrath!】

【Bow down to Greed!】

Thus, the Seven Deadly Sins began to pour hellish energy into the spell formation they had completed.

It required vast amounts of hellish energy, especially to corrupt a powerful human like Ed.

– Kwaaaaaah─!

So, they started to trigger the spell formation, investing their energy of ‘wrath’ and ‘greed’.

The more hellish energy they poured, the smaller their bodies became, and they’d gradually lose the power gained by exploiting the humans of this city, but they didn’t care.

For if they could make Ed a slave, they would gain far more power than the hellish energy they had used.

【Bow down to Wrath─────!】

【Bow down to Greed─────!】

Thus, the Seven Deadly Sins envisioned their transformed forms as great demons, pooling all their strength into completing the spell formation.

However, blinded by desire, they failed to notice Ed’s lips trembling and the ‘Crucible’ inside his suit displaying [Charging···].

They only erupted in mad laughter, imagining how they would become great demons…

***

Finally, the long-awaited moment arrived.

The spell formation, infused with a large amount of hellish energy, was completed, and Ed was reduced to a slave.

Soon, the Sin of Greed, with dark circles under its eyes, took a deep breath and tested whether their spell had succeeded.

【Rise.】

They gave their first command to Ed, now transformed into a slave of desire.

“…Yes.”

At that, Ed began to carry out the order, his red-rimmed eyes glowing as he stood at attention.

Seeing this, the demons of the Seven Deadly Sins burst into laughter.

【Kekekek…! Khuhuhuh…! Kha-hahahahahaha─! Puhuhuhuhuh─!】

They doubled over in laughter, looking at the savior of humanity, now reduced to their slave.

They then began to point mockingly at Ed, hurling all manner of insulting comments.

Yet, Ed, who had become a slave, stood silently at attention.

Finally, the Sin of Wrath issued the next command to Ed.

【Good, very good…! Now, show me your wrath! Unleash your wrath to the fullest and lend me your strength!】

It commanded him to drown in wrath.

And Ed began to follow that command obediently.

“Grrrrr…! Ughhh…! I hate you…! You’re all so disgusting…!”

Ed started to tremble with rage.

The Sin of Wrath smiled widely and shouted.

【Yes! That’s it! Show me more! Drain your life force to unleash your wrath!】

“I want to kill! My hatred is boiling over! I want to tear everything apart, to destroy it all! My wrath is rising!”

As Ed spoke, he began to move slowly.

The Sin of Wrath, watching this, erupted in insanity.

【Kha-hahahaha! Yes! Anger more! Scream your wrath and… wait?】

But at that moment.

Suddenly, it ceased laughing and tilted its head, puzzled.

And rightly so, even when Ed was furious, no power was flowing into it.

At this point, a massive flow of strength should have been entering, yet why─

– Pwoooooo!

【Huh?】

In that fleeting moment, a flow of thought boiled over.

And the sharp sensation felt from the north.

Before anyone realized, Ed’s nano blade had pierced deep into its abdomen.

As Ed pulled out the blade, he muttered.

【Did you finally figure it out? It’s a drag catering to your foolish judgment.】

【…What?】

【Do you really think it’s plausible? That I’d lose against mere test subjects?】

Ed said this as he extended his arm to the area where the remains of the small repulsor shooters lay.

However, the shattered remains of the small repulsor shooters were absorbed into Ed’s suit as he extended his arm.

And soon after, they emerged from the suit, perfectly restored as if nothing had happened.

【……】

The Seven Deadly Sins stared in shock at this spectacle.

That weapon of Ed, powered to the extremes and destroyed, could be restored so easily?

At that moment, Ed donned his helmet once more and spoke.

【It seems this Nano Suit, not enhanced with mana, is just about this level. It should be the toughest material in the natural world, yet it still has its limitations.】

【…What?】

However, Ed’s muttered words were pure shock to the demons of the Seven Deadly Sins.

Because the materials that were not reinforced with mana were practically garbage in terms of hardness or performance.

It’s said among the swordsmen that “no matter how finely crafted a sword may be, unless it’s reinforced with mana, it is no different from a flyswatter.”

The essence of enhancing materials or bodies with mana is the most basic process and an essential step in battles.

And this applied to demons without exception.

No living being in this world is unaffected by mana.

【This is impossible…】

Thus, Ed’s statement implied two crucial facts for the demons of the Seven Deadly Sins.

First, if it was this strong even without mana reinforcement, the basic specs of Ed’s Nano Suit must be unimaginably high.

Second, if he fought properly with mana enhancement, they’d be severely doomed.

Ed looked at the demons of the Seven Deadly Sins and said.

【Now that the first test is over, how about we move on to the next test?】

The durability test ended, and Ed was transitioning into the sandbag test.