Highschool DxD : Actually Satan

I think people tend to forget leo may not have raw power matching Tiamat or Fighting experience of Aizen.

But leo is a terrifying opponent to have he is NOT weak.

And I also hear complaints about too strong enemy? Smh i think i already said that idea is shelved.

Weltfresser is not that strong but he was prepared to face Tiamat rmember how he was there to capture her ? Yeah.

Also a minor confusin on why mc was not present the last chapter which confuses me why it would occur but I must remind people that more than half of the previous chapter occurs when Leo is in The Simulation.

Last chapter of this Arc and we won't have nutliversal stuff for some time after this..

Also show some support will you in powerstones I'm uploading regularly 😀

---

Well, he never got the chance.

BOOM.

A shockwave cracked through the battlefield as space itself shattered.

Leo was here.

Leo took one look at Weltfresser and realised his danger.

Instantly, He pulled out the big guns.

There was no drawn-out battle, no testing of strength—

Leo appeared above him by deleteing the space between them.

Leo's hand clamped around Weltfresser's throat.

There was no flashy moves.

Weltfresser's body began to distort—his information collapsing.

Sometimes it was easy to forget Leo had the power to destroy parasitize and create information at will.

Even if the range was low and for full erasure he needed contact Leo was still a terrifying opponent.

After erasing Weltfresser, Leo turned toward Tiamat.

Her mind wasn't exactly stable with whatever attack that had hit her

Leo didn't waste time.

In a blur, he floated to her and placed a firm hand on her shoulder.

He didn't need to check what was wrong anddidn't need to analyze the damage. That wasn't how it worked. Ailment set to / False and he was done.

Whatever effect the attack had on her—gone. Like it was never there.

Even as he trained, even as he sought versatility in magic and power, at the end of the day, it all came back to one fundamental truth—he didn't need to understand a problem when he could rewrite it out of existence.

Tiamat's aura dimmed slightly as clarity returned to her eyes, but Leo still didn't let go.

Tiamat took a deep breath, the chaotic storm in her mind finally settling.

She closed her eyes for a moment before exhaling, her voice soft.

"Thank you...."

She straightened, her composure returning, before looking directly at Leo.

"You should take... care of him.... He's on... the moon," she added, transferring the precise location she had tracked into his mind.

Leo nodded in understanding, but instead of immediately leaving, he stepped forward and pulled her into a hug.

Tiamat blinked in surprise, but after a second, she reciprocated, wrapping her arms around him.

Neither spoke. There was no need for words.

When they finally broke apart, Leo pressed a brief, lingering kiss on her forehead before stepping back.

Then, without saying anything, he turned and made his way toward Fury, who was currently being healed by Aizen.

Unlike Leo, Aizen had teleported far away from the battlefield, positioning himself as a support rather than a frontline fighter.

After receiving Hope's message about Fury and her needing assistance, he had arrived to stabilize the situation.

Leo took a glance at the trio. Tia was the least injured, but she still looked like she had something to say. He didn't engage in conversation. There was no time for that.

Instead, he gave them a simple directive. "Heal up and head to Aubrest. Help with the rebuilding. I'll meet you there."

Turning to Aizen, he added, "You focus on studying the revival of Himmel, the hero."

Then, as if dismissing any further discussion, he said, "I'll be right back."

Before he could leave, Tia spoke up, her voice steady but laced with concern.

"You're sure you can win alone?"

Leo didn't hesitate.

He looked at her, his confidence unwavering.

"I might have a little trouble if I held back," he admitted.

Then, a smirk played at his lips. "But now? I'll win."

---

Leo landed in front of the badly damaged metallic cube, its surface riddled with fractures, metallic tentacles stretching deep into the moon's surface.

Even at a glance, he could tell—it was draining energy from the moon.

His crimson eyes gleamed as he tapped his heel against the ground.

Instantly, the entire cube—tentacles and all—was ripped from its anchor and transferred into a Marble Phantasm.

It was the same forest where he had first enforced his texture, permanently altering the world of Frieren.

But this time, the application was different.

This wasn't just enforcing reality—this was building an entirely new world of magic and then overlaying the texture onto it.

The difference? It was like filming on a controlled studio set versus building an actual, fully realized structure in reality.

The cube lurched upward, attempting to escape, but with a raised hand, Leo dragged it back down, the force of its landing kicking up clouds of dust as its tentacles strained against his grip.

With a flicker of intent, his rudimentary telekinesis—developed on the spot— tore the tentacles apart.

Then—

The sound of turning gears echoed in his ears.

A moment later, The cube did not repair even if glitches in reality occured.

His crimson eyes flickered faintly yellow for a fraction of a second, scanning the source of the repair mechanism.

Fascinating.

This wasn't magic.

Higher-tiered technology, something beyond conventional understanding of humans.

Mentally noting its structure for future use leo continued walking slowly towards the cube his wings retracted..

Leo remained unusually calm.

It was the same kind of calm he had felt when he first awakened to the Seed of Satan—the same calm that had driven him to declare war on the gods without hesitation.

Back then, there had been something behind it. Excitement. Thrill. A sense of absolute invincibility.

But right now?

There was nothing.

He took a step forward, then another, his movement measured, unhurried.

The cube shuddered, its metallic frame twisting as its higher-tiered systems desperately tried to repair the damage.

Leo didn't allow it.

With a simple flex of his will, the repair systems collapsed mid-process, their mechanisms rendered useless.

Then, piece by piece, he ripped the cube apart.

The first layer peeled away, its reinforced plating crushed like paper.

Then the next.

And the next.

The entire construct screamed—not with sound, but with the silent, frantic pulses of a machine trying to survive against something far beyond its capacity to resist.

Leo kept walking, his hands never moving, his telekinesis doing the work for him.

Leo was purposefully being vindictive in the process.

A figure burst out of the collapsing cube—a half-organic, half-metallic man wearing the same outfit as the robot from before, his body damaged, leaking blue blood from what should have been his eyes.

A drone hovered anxiously beside him, sending out rapid pulses of light as it worked to repair his mangled arm.

He was about the same height as Leo.

Yet, despite his wounds, his expression twisted into something that was almost disbelief—almost desperation.

"What in the fuck are you?" he spat, his voice filled with frustration and desperation.

"My analysis didn't show any of the abilities you're displaying! How could a mere sacrificial lamb be this powerful?"

Leo stopped walking.

Leo's eyes narrowed slightly.

"Sacrificial lamb," he repeated, his voice steady. "Care to elaborate?"

Weltfresser scoffed, his damaged face twisting into something between disdain and amusement.

"You think you're worth my explanation?" he sneered. "A being like you isn't even—"

CRACK.

The cube behind him disintegrated into dust—effortless, absolute.

The moment it was gone, the drone flickered, then powered down, crashing uselessly to the ground.

Weltfresser's words died in his throat.

Leo stared down at the foolish being for a moment, his gaze unwavering. Then, he smiled—a slow, knowing smile that sent a ripple of unease through Weltfresser.

"Do you know the word that perfectly summarizes your entire existence at this point?"

There was no response.

Leo took another step forward, his presence pressing down like a weight.

"Hubris."

Weltfresser stiffened.

"For a being that claims to be far beyond others, you seem far too grounded in human ideals," Leo continued, his tone almost amused. "From what I can see—"

He stepped closer.

And Weltfresser—stepped back.

Weltfresser flinched as Leo took another step forward, but the young man simply chuckled, shaking his head.

"Please, don't be so afraid..." Leo said, his voice eerily calm. "You know you're going to die. What's the point of clinging to desperation? Aren't you half machine? You should be able to ignore simple chemical reactions like fear."

A chair formed behind Weltfresser, as reality shifted to accommodate Leo's whims.

Still smiling, Leo gestured to it.

"Sit down." His voice was almost conversational. "I'm feeling a little....profound at this moment."

Weltfresser hesitated, but Leo didn't seem to care. His gaze drifted for a moment, distant, contemplative.

"There are so many things going through my head right now," he murmured, "that it all just feels... hollow."

Leo's gaze darkened, his smile fading ever so slightly.

"This situation you put me through... the guessing game, the way you targeted Tiamat for whatever twisted reason you had..." He exhaled slowly, his fingers twitching as if restraining something.

"Realizing that I've been outdone, that feeling of losing control in an active position... it brought back some memories. Memories I don't like."

His crimson-ringed eyes locked onto Weltfresser, piercing through him like a scalpel.

"You made me remember a person that has been dead for seventeen years."

Leo's expression didn't change, but the air around him grew heavier, suffocating.

"I don't like that."

Leo's voice remained disturbingly casual, yet there was an undercurrent of something deeper—something almost predatory.

"So be a good person and give me everything you're worth."

He took another step forward, and Weltfresser instinctively flinched.

"I know you have a way of hiding things from the informational plane. Maybe it's you, maybe it's that so-called master of yours. But either way—" Leo tilted his head slightly, his eyes glinting. "I want to know."

The pressure in the air grew unbearable.

"And trust me, just because I was sent here to kill you doesn't mean I can't put you through things worse than death."

"You… you don't get it." His voice trembled, but he pushed forward, grasping for whatever scraps of dignity remained.

"I was a researcher. One of the greatest minds of my kind! My people were among the many interstellar races humanity conquered, but we weren't just another species to be wiped out or enslaved—"

PUNCH...CRACK.

His words were cut off—literally.

Leo's fist, wreathed in informational decay, drove straight into his mouth.

Weltfresser's head snapped back, his synthetic jaw splintering, blue blood spraying into the air as the very concept of his speech was temporarily erased.

Leo withdrew his fist, shaking off the remnants of decayed data.

"I already know everything about you." His voice was cold, almost bored. "I've already made a folder on your entire existence. The only thing I care about now—" his eyes sharpened, and his aura crashed down like a tidal wave— "—is what I can't see."

Weltfresser wiped the blue blood from his mouth, his synthetic eyes dimming—like a man staring into the abyss, only to find it grinning back at him.

Leo's smile widened ever so slightly. "You should start at the part where you called me a sacrificial lamb." He tilted his head, voice calm, almost conversational. "And then we can get to "the Executioner" in your memories.

Weltfresser exhaled sharply.

His fingers twitched, his body tense, as if considering whether to speak or try to kill himself.

But Leo didn't press him—he just stood there, watching, waiting.

There was no need for threats.

Weltfresser already understood.

He looked lost for a moment after Leo's question.

His gaze sharpened, clarity returning to his synthetic eyes as if something finally clicked in place.

"You're one of those, aren't you?" His voice was quiet at first, almost reverent. "Priority One…?"

Leo's interest piqued. His head tilted slightly. "Indeed."

Weltfresser's breath hitched—just for a moment.

His fingers twitched, hands clenching and unclenching as if trying to grasp something that wasn't there.

His synthetic body shuddered, his posture unsteady, like a puppet with half-cut strings.

Then, he laughed.

Not a laugh of amusement or mockery, but something raw—something fractured.

It started as a chuckle, low and uneven, before spiraling into full-blown hysteria.

His shoulders shook, his chest heaved, and despite the blue blood dripping from his lips, he couldn't stop.

"Hah… haha… HAHAHA!"

His fingers dug into his arms, metal scraping against metal, his grin twisting into something ugly.

His dull eyes flickered—bright, then dim, like a failing light.

"I should've killed you when I had the chance." His voice wavered, caught between bitterness and something disturbingly close to admiration.

"I had you right there—right in front of me. But I waited. I watched. I thought you were just another… another pawn those rats sent to me—" His breath hitched, his head tilting back as if the weight of realization was too much to bear.

His fists slammed into his own head once, twice—an attempt to silence the whirlwind inside his mind.

"No… no, this isn't how it was supposed to go." He sucked in a sharp breath, shoulders tensed.

"They don't send someone like you for an 'insignificant' being like me... I truly misjudged you" His lips curled, and for a moment, his entire frame trembled.

"No, no, no… you're no sacrificial lamb."

His hand, still twitching, rose to his face, fingers running down the deep cracks in his synthetic skin. He exhaled a ragged breath, the hysteria melting into something quieter.

"You're the one they finally sent to kill me...Once they got rid of their bad product."

PUNCH..BOOM

Leo's fist buried itself deep into Weltfresser's gut, the force rippling through his body like a shockwave.

A grotesque crunch echoed through the moon's barren landscape as metal and flesh alike buckled under the sheer impact.

Weltfresser's form lurched forward violently, his feet scraping against the dust as he struggled to remain upright.

Blue blood dribbled from his lips, a thick, viscous liquid that shimmered under the faint glow of distant starlight.

His breathing hitched—a jagged, uneven rasp—but even as pain wracked his body, there was no fear in his eyes anymore.

Instead, there was something else.

A twisted sort of amusement.

His lips curled, splitting further as he coughed, and then—deliberately, with the last ounce of control he could muster—he spat a mouthful of his own blood onto Leo's face.

The dark smear ran down Leo's cheek like a stain of defiance, a mockery of the overwhelming force pressing down on him.

"I ain't telling shit about him"

His voice, though hoarse, carried an unyielding edge.

His shoulders trembled, not from fear, but from the sheer force of his own breathless laughter.

His body was failing, his systems flickering, but his eyes—dull yet wild—remained locked onto Leo's.

There was something almost triumphant in them. A final act of defiance from a cornered beast, bleeding out yet still baring its fangs.

---

A few minutes later, Leo walked away from the plwce his MarblePhantasmws used , his form immaculate—no trace of blood, dust, or the "battle" that had just taken place.

The only evidence of the presence of Weltfresser was the scarred lunar surface behind him, a vast crater marking the violent stay here.

He stood still for a moment, gazing at the landscape before tilting his head upward, eyes locking onto the distant blue planet.

The system had been eerily silent during the encounter, but now? Now, Leo had questions—serious ones.

But those could wait.

A small, amused smile tugged at his lips as the familiar chime finally rang in his mind.

[TARGETS ELIMINATED: 3/3]

[Time remaining in this world: 120 minutes]

"Yeah," he muttered to himself, his voice quiet but certain.

"I think it's time to go home."

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Stones and Reviews please