I Became a Genius Mechanic at the Academy

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Lilith, transformed into the visage of a demon yet still beautiful.

She spoke as she looked at the progenitor.

“…At first, I thought of using you. But… getting to know you changed everything. Just stick with us. No, let’s just run away together. As long as we’re happy, right? Okay? I really love you.”

The Duke of Hell, pleading earnestly with her tearful face to escape together.

However, the progenitor did not accept her.

Instead, he unleashed his powers, claiming she had deceived him, intending to punish her.

“…How sad.”

But with just a gesture from Lilith, the progenitor’s powers were thwarted.

She had already prepared everything by sharing countless nights with him.

“…But it’s alright. You’re mine for life anyway. Until you love me again, I will give you my love forever.”

The progenitor, having his powers sealed, was dragged away under the subjugation of the Duke of Hell.

She hugged the unconscious figure and ventured deep into the northern wasteland where her nest was established.

In this frigid land, she tamed countless monsters to create a fortress.

“In this place, we will be happy forever. Our offspring will be the ruler of both humans and Hell.”

Thus, Lilith bound the progenitor.

She sealed away all his powers and cast a brainwashing spell on him, forcing him to love her.

“My creator, my savior, my love, my light and darkness. You are everything to me. And to you, I am everything.”

Lilith, continuously whispering that they were each other’s everything.

For about a week, she tirelessly cast the brainwashing spell without a single moment of sleep.

The progenitor’s eyes became dull, as he began to echo her whispered words.

Lilith beamed cheerfully as she embraced him.

“Yes. That’s it. It’s just us. So, you need to become a demon like me.”

And thus, Lilith cast various brainwashing spells on Graham’s progenitor.

Simultaneously, she began to inject her magic, initiating the process of his demon transformation.

“Try this. It’s very delicious.”

As the demonization progressed, Lilith gradually began to train him.

She offered him human flesh, which demons typically consumed, with a mischievous smile.

However, despite his dazed eyes, the progenitor still rejected the human flesh to the end.

Seeing this, Lilith frowned and chewed the flesh vigorously, attempting to kiss him forcefully.

Rolling her tongue, she passed the human flesh from her mouth to his.

“Eat…♥ We must become one… You are now part of my kind…”

A fanatic obsession with Graham’s progenitor.

However, such obsession from Lilith did not last long.

For the progenitor, who had been secretly working to unseal himself without Lilith noticing, finally managed to break free.

“I can’t stand your disgust any longer!”

In an instant, he unleashed his powers, dealing a fatal blow to Lilith.

However, he too was undergoing demonization and had many of his powers sealed, unable to kill Lilith.

Thus, the progenitor attempted to reseal her before she could recover.

But even that was incomplete due to the many powers that remained sealed.

“Huff… Huff… Huff… The rest…”

So, the progenitor decided to entrust the remainder to his descendants.

Though he could not use the powers inside him, it was possible to pass them on across dimensions, planning for the future.

Thus, the progenitor sent his powers and memories to his descendants.

No, it was the moment he was about to send them.

“You will forever be with me. Even our descendants.”

Due to the incomplete seal, Lilith regained consciousness.

Gathering all her strength, she sent a curse.

The curse intertwined with the progenitor’s powers, weakening them before being conveyed to his descendants.

And the content of that curse was that unless a certain negative emotion depicting the miserable life of the descendants was injected regularly, her seal would break, and all the monsters of the north would bring about the world’s destruction.

[…Ah.]

Thus, the self from the parallel world, upon learning the whole truth, began to tear at his hair, screaming.

At the same moment the memories of the progenitor ceased, Adrian’s demise flooded into his mind.

[Ahh… Uwaaaah…]

Adrian, injecting all the negativity he had accumulated into the sealed Lilith.

Finally, as all negativity was poured out from Adrian, the sealed Lilith awakened.

She, who only awakens during the brief moments when she consumes negativity once every few decades, looked upon the fallen Adrian.

“You have arrived… Your child♥”

Lilith spoke thus and began to savor Adrian’s negativity, rolling her eyes back.

She began to read through the miserable life he had walked into, bringing negativity upon himself.

“Hah… Hah… Hah…♥”

Thus, she gleefully smiled at the completed curse she had cast.

Bringing the fallen Adrian closer with her tentacles, she firmly bound him to her body.

Gently stroking his head, she uttered insane words.

“Your child… Your avatar… Until that flesh rots and seeps into me, I will hold you forever…♥”

With those words, Lilith slowly began to close her eyes.

As the conditions of the curse were satisfied, she would be sealed again.

However, the body of the deceased Adrian was buried within her.

Until the corpse rotted away, he would remain trapped inside her forever.

[Uuugh…]

The self from the parallel world felt nauseous upon realizing all the truths.

Ultimately, the Graham lineage was a doomed family that endured Lilith’s curse to prevent the destruction of the world.

Because at this time, when all celestial beings had vanished, if Lilith and her forces descended, humanity would stand no chance of stopping them.

The Lords of Hell, sealed by the ‘leader of the celestial beings’, were only present in the region known as the ‘Wasteland’, bordering the Empire.

“Then… what on earth.”

However, Isabella was curious about what fate awaited her.

What decision would the self from the parallel world make upon learning the entire truth?

“…”

The answer was that he made no decision.

For in the year following the revelation of the truth, the seal of the ‘Wasteland’ broke, and countless demons spilled forth.

“…Ah.”

And the kingdoms around the world began to fracture.

Civil war erupted in nations devoured by the burgeoning religion known as the ‘Demon Church’, hastening the demise of the human world.

[Isabella.]

Amidst all this, the Edgar from the parallel world sought her out.

He spoke, wearing a sorrowful smile.

“Let’s be together. Even if you don’t bear that burden, the world is on the verge of destruction.”

[… …]

The self from the parallel world nodded.

It was only when the world was on the verge of destruction that she accepted Ed.

Afterward, the two began roaming around with their Academy classmates, forming an organization to save the human world.

While fighting demons and expending negativity, Isabella’s humanity began to gradually return.

[Can’t sleep.]

But her chronic insomnia couldn’t be cured.

Whenever that happened, Ed would use the sleep-inducing techniques learned at the Academy to put her to sleep.

The self from the parallel world could only fall asleep in Ed’s embrace.

“…”

However, the parallel world was gray.

As time passed, the demon’s power grew stronger, and her comrades began to die one by one.

Ultimately, only Ed and she remained.

[…Lull me to sleep.]

But the two managed to endure for a long time.

As they were considered the strongest students of the Academy, they could rely on each other and navigate through countless adversities together.

“…”

And it was only at that time that the self from the parallel world could finally experience love in a genuine way.

In a world destined for destruction, she wholeheartedly accepted the person she had hurt the most, and loved dearly.

[…I regret it.]

But regret welled within her.

Why didn’t she accept him sooner?

If she had, she would have been able to feel more before her emotions withered away.

Now, she was unable to feel almost anything because she bore so much negativity.

No matter how much negativity she expended, no emotions beyond a certain threshold would return.

“…Ah. This is my last…”

Thus, the self from the parallel world met her end in Ed’s embrace.

She suffered a fatal wound while breaking through the hundreds of demons surrounding her, and gradually fell asleep while hearing his lullaby.

[…I love you.]

And that was the last word.

An empty phrase devoid of emotion.

Yet surely, she could still feel the faint touch of her sincerity.

“…Ed.”

Then, Ed wept.

He held her corpse in his arms and cried.

He cried a lot, until the very end.

Watching that, her heart felt like it would burst.

“…?”

But it was at that moment she thought everything ended with Ed’s death.

The memories began again.

Isabella did not realize that everything she had glimpsed until now was merely the ‘first round’.

The tragedy was only just beginning.

“Ah… Stop…”

And she repeated the same mistakes.

Each time pushing Ed away, inflicting pain, using him to fill her negativity.

Then pushing him away again, causing more pain, losing her humanity—regretting, regretting, and regretting again.

“I’m… Sorry… I… I…”

And Ed broke down in tears.

Each time she reached her end, he would hold her corpse and cry.

She had never properly given him love even once.

He had instead given her everything, cherishing her wholeheartedly.

Yet, she continued to repeat the same mistakes until a new universe was born and destroyed.

She was someone who chose to abandon Ed without a single exception.

“Stop… Now, enough…!”

Repeated endlessly, over and over.

Her heart could no longer withstand it.

Watching herself make foolish choices, leading a life in ruin, was unbearable.

Thus, at that moment she decided to live for herself and solely for Ed in this life, the repetitive memories began to scatter.

Brilliant light burst forth, blinding her vision.

As time passed and the dazzling light dimmed, Ed was there, looking at her with concerned eyes.

Isabella gazed at him with a tear-stained face.