Highschool DxD : Actually Satan

Late at night, while the house was cloaked in silence and his parents were fast asleep, Leo sat at the kitchen counter.

His focus was entirely on the mundane objects before him: coffee beans, milk , and the faint hum of the refrigerator.

But what he was doing was far from ordinary.

His eyes glowed faintly, yellow lines flickering across his vision as he assigned new properties to the coffee beans.

The process was slow and meticulous, each adjustment carefully calculated.

The informational skill he had honed was being put to work, not for himself this time, but for his parents.

He was altering the very essence of these everyday items.

The coffee beans now held properties that would subtly enhance the drinker's physical resilience.

The milk would fortify the immune system, pushing their bodies to fend off diseases and repair damage at a far higher efficiency than before.

It was delicate work.

Leo knew better than to take risks when it came to his parents.

Unlike his experiments on himself or distant classmates, this had to be perfect.

Any mistake, any instability in the changes he made, could have disastrous consequences.

And he couldn't allow that—not with them.

The scope of what he wanted to achieve was enormous.

He envisioned a future where his parents' skin would naturally harden, resistant to even the most advanced magic or physical harm.

Where their immune systems would be so strong that illness and aging would slow to a crawl.

Where their bodies would adapt to protect them from a world he knew was far more dangerous than they realized.

For now, these enhancements were minor, small steps toward a greater goal.

Each sip of their morning coffee, each drop of the milk they drank, would subtly strengthen them over time.

It wasn't flashy or immediate, but it was safe.

Leo leaned back, rubbing his temples as he finished assigning the properties.

He couldn't bear the thought of losing his parents—not before he'd accomplished something meaningful in this world.

Not before he made then proud.

---

It's time.

Leo glanced at the clock before heading to his room.

He dressed himself in a leather jacket and a mask he had made, completing the look with boots that added a mysterious touch.

His attire wasn't just for show; everything he wore was enhanced to ensure he wouldn't draw attention.

Anyone who looked at him would quickly lose interest—a strange but effective way to stay unnoticed.

Sure, there was the rare chance someone might notice how unnatural the effect was, but Leo wasn't too concerned.

His goal tonight was simple: drain the ley lines outside Kuoh.

Why? To create the foundation of his ultimate power set.

His skills were parasitic in nature, so the idea of creating something self-sustaining and infinitely useful appealed to him.

He planned to construct a separate dimension—an informationally hostile one.

The nature of this dimension would allow him to wield unquantifiable power, effectively letting him rewrite reality itself if he mastered it.

But constructing a dimension wasn't a simple task.

It required immense energy, far more than he had on his own.

His reserves were below average—pathetically so when compared to most beings in this world.

Even though he could manipulate information naturally, he simply didn't have the raw magic to create such a massive structure.

That's where the ley lines came in. They would provide the vast amounts of energy he needed to begin.

However, this wasn't just about the dimension.

Leo had other plans, too. He intended to rebuild his body using the best traits of the beings he had encountered.

The physiology of devils, the nekomata traits he had observed, the unique attributes of ghost spirits, and even aspects of a fallen angel he had seen by chance—all of these would be incorporated into his new body.

His goal was to create a body with the best magical makeup, one capable of utilizing mana—the bizarre quantum particle —more efficiently than anything else in existence.

He wanted to turn his body into the ultimate magical furnace, one that could adapt and harness energy on a level no one could rival.

Leo didn't care about the absurdity of his plans or the scale of what he was trying to accomplish.

He had made up his mind.

He stepped into the night.

Leo didn't have any fancy way to leave Kuoh, so he did what any regular person would—he booked a bus.

Now, sitting uncomfortably in his seat, he couldn't help but think this was the worst decision he'd made in a while.

His goal was straightforward: head to a small, secluded area between Kyoto and Kuoh, where he could siphon magical energy from the ley lines.

There was a ley line outside Kuoh that would work—smaller compared to Kyoto's ley lines, but it would suffice for his purpose.

The problem wasn't the destination, though—it was the journey.

He should've thought this through.

A teleporter, maybe some kind of magical transportation spell—literally anything would have been better than sitting on this bus.

His only company was a bizarrely flirty grandmother seated across from him.

She kept throwing awkward comments his way, leaving him frozen in a mix of discomfort and secondhand embarrassment.

"This is the worst," he muttered under his breath, staring out the window to avoid any more eye contact.

The bus trundled along, the dim lights of Kuoh fading into the distance as he got closer to his destination.

---

As soon as the bus came to a halt, Leo stepped off and found himself on a dimly lit dirt path flanked by towering trees.

The air was heavy, thick with the energy he was here to claim.

He exhaled deeply, cracking his neck in preparation for what came next. "I should've just done this earlier," he grumbled, rolling his eyes at his own shortsightedness.

He closed his eyes, focusing intently. Within seconds, his body began to shift, the information embedded in his very being rewriting itself under his will.

With a sickening series of cracks and pops, his shoulder blades split apart as wings erupted from his back.

The pain was indescribable—his bones realigning, nerves reconfiguring—but it wasn't like he couldn't do anything about it.

He'd already realized, mid-transformation, that he could just switch off his pain receptors.

And, of course, he did.

But still, why didn't I think of that earlier? he thought bitterly.

Not that he'd ever admit to being stupid.

No way.

He was the most genius person in the world, a walking miracle, and it was absolutely not self-praise.

His new wings twitched as he experimentally stretched them, the dark feathers gleaming faintly under the moonlight.

Without wasting another second, he kicked off the ground and took to the skies, the cold wind cutting against his face as he soared over the dense forest.

It didn't take long to find the place—a quiet, isolated patch where the concentration of natural energy was strongest.

Landing silently, Leo stood amidst the dense foliage, the air buzzing with raw energy.

For a moment, he hesitated, staring at the ground beneath his feet. "What's the point of wasting time with rituals?" he muttered.

With that thought, he simply plunged his hand into the earth, his fingers digging into the soil.

Immediately, the energy surged toward him, a wild, untamed force that he began siphoning into himself.

It wasn't a simple process—his body wasn't exactly built to handle this much power at once.

But that didn't matter.

He focused, actively rebuilding his own vessel on the fly, his concentration razor-sharp.

Time began to slow as his mind accelerated, every second stretched out like hours.

It wasn't just a trick of perception—he was literally speeding up his mental processes to ensure every adjustment was perfect.

Every strand of energy was being restructured, reshaped, and stored with absolute precision.

He felt the power flooding into him, stronger with each passing moment.

Sweat beaded on his brow despite his accelerated state.

With the energy coursing through him, Leo made a decisive move.

Instead of funneling all of it toward external goals, he redirected a portion inward, using it to modify and enhance himself.

And given that natural energy was tainted with human malice it would only make sense to use it on something he already had.

He closed his eyes, focusing on the core of his being, where the "Seed of Satan" lay dormant.

The essence of that seed represented , a blueprint of immense potential.

Carefully, he began to channel the energy into it, shaping and expanding its influence over his body.

Slowly, his physical makeup began to shift, adapting to the changes.

Next, he turned his attention to something he had scanned earlier: the Nekomata physique.

Having observed and analyzed Koneko, he decided to incorporate elements of her physiology.

This change would attune his body more closely to natural energy, which he now understood was fundamentally different from mana.

While mana was a versatile magical particle, natural energy was raw and primal, a by-product of the Earth's own systems.

It wasn't bound to mass like gravity or other forces; instead, it arose from the dense concentration of mana within the earth itself.

Though less versatile than mana, natural energy had its own unique and immense power.

As the energy surged through him, he began to make further modifications, incorporating traits he'd scanned from a passing fallen angel.

If he planned to eventually present himself to the underworld as the rebirth of Lucifer, or the "True Satan," he needed to look and feel the part.

And what better way to sell that image than by embodying elements of both a devil and an angel? The showmanship of his first appearance would be just as important as his actual strength.

He didn't want to rely on his super destructive skills—not yet.

He reflected on his most dangerous ability: a terrifying attack that could obliterate half the underworld if unleashed unrestrained.

It was a skill that degenerated information, returning matter to its original state by erasing its fundamental structure.

Which triggers a chain reaction of the degeneration casuing sureoundings to enter a fluctuative state that causes things to collapse in on themselves.

Even gluons, the particles holding atomic nuclei together, couldn't resist its effects.

It was overkill, and he had no desire to use it.

But at the same time, he couldn't diminish himself by appearing weak.

This process of building his body would ensure that even his base abilities could hold their own.

As he worked, his body underwent grotesque transformations.

His skin ripped apart, then reformed; his muscles shredded themselves, only to regenerate stronger and more refined. It was an agonizing process, at least in theory.

He'd long since turned off his pain receptors, so he didn't feel a thing, though his brain still registered the information.

The human malice part was a bitch as he kept hearing voices and painful emotions but it was bearable with a few modifications.

He watched it all happen in silence, observing the gore and chaos with an almost detached fascination.

Despite the brutality of the process, it was oddly therapeutic.

He'd always viewed humans, including himself, as imperfect beings, flawed down to their very core.

Watching his body evolve, becoming something far beyond human, gave him a strange sense of satisfaction.

For once, he felt as though he was truly improving himself, reshaping his very nature to reflect his ambitions.

As the transformation reached its peak, Leo felt something shift deep within himself, something he hadn't anticipated.

The "Seed of Satan" had absorbed more than enough energy tainted with human malice, and for a moment, he felt a surge unlike anything before.

It was then that he heard it—a sound that defied explanation, a resonance traveling from within his very core.

Crack

The moment the shell of the Seed of Satan cracked, it was as if the very fabric of reality had been torn open.

A deafening rumble rolled through the earth, shaking the ground with such force that trees toppled and rocks split apart.

The sky, serene only moments ago, twisted and churned as dark clouds formed unnaturally close to the ground, sinking to a mere 100-200 meters above him.

The air grew heavy, suffocating, charged with natural energy and mana that prickled against his skin.

Then, the winds came.

They howled with ferocity, spiraling around him like a vortex, tearing leaves from branches and flinging them into the air like confetti in a violent storm.

The gale wasn't natural; it was alive, responding to the energy emanating from him.

The pressure in the atmosphere grew so intense that the ground seemed to groan in protest.

And just when it felt like the earth might collapse beneath him, the world erupted in light.

Arcs of pure energy exploded downward from the clouds, illuminating the darkened forest in blinding flashes.

Simultaneously, jagged streaks of power shot upward from the ground, breaking free of the earth's crust.

The two opposing forces met at one point—him.

He screamed, in pain that he felt in his soul, as the energy forcefully entered his body.

It was the planet itself funneling power into him, a deluge of energy so vast that it threatened to tear him apart.

His body convulsed as the raw force merged with his being, but through it all, he remained standing.

The incoherent voices he heard during all this was clearer now.

It was no longer a stream of unintelligible gibberish of pained screams and Disgusting thoughts.

It was the planet itself, speaking to him.

"Welcome."

The word echoed in his mind, resonating not just in his consciousness but in his very soul.

It was surreal. The planet—this ancient, indifferent force—had acknowledged him.

But why? Why would it help him, a parasite draining its energy?

Why would it give him power when others before him had likely done the same and been ignored?

"Why are you helping me?" he asked aloud, his voice shaky, half-lost in the roaring winds. "Why would you care?"

The voice didn't answer his question.

It didn't need to.

The truth was, he didn't care.

If the planet wanted to help him, he would take it.

If it wanted something in return, he'd deal with that later.

But as he stood there, surrounded by the storm of energy, another realization hit him.

The planet had screwed him over.

This much energy being channeled into him? Every single supernatural entity in the world would have noticed.

There was no doubt.

They were coming.

"Shit," he muttered, glancing at the swirling chaos around him.

He reached out to the voice again, now desperate. "Help me in doing this faster give me a blessing or something.." he pleaded.

There was silence for a moment.

The energy coursing through him paused, as if the planet itself was considering his words.

Then, finally, the voice spoke again, soft but powerful.

"Okay.."

Relief flooded through him, though it was short-lived.

He could already sense the approaching presences—powerful, curious, and likely hostile.

Time was running out, but for now, he focused on finishing what he'd started.

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Stones and Reviews please