DxD : Actually Satan..?

[One hour before Shinji's death…]

The summoning was perfect.

Bazzet Fraga McRemitz stood tall, her expression composed, but her heart beat with anticipation for the fabled hero she was about to meet.

This was it.

She would summon Cu Chulainn and enter the Holy Grail War.

Behind her, calm and emotionless as ever, Kotomine Kirei stood with hands folded beneath his sleeves, a pleasant smile etched into his face.

He watched the back of her head like a man admiring a knife collection.

Any second now, he would strike—sever her spine, and steal her Servant through a Command Seal transference he had prepared in advance.

Just one second—Then the circle flared.

A figure emerged but it waw not Cu Chulainn or a lancer for that matter.

A young man stood there, tall, broad-shouldered, eyes glowing with an unnatural luster of crimson rimmed in gold, wearing a black coat lined with geometrical patterns.

Bazzet blinked.

"…Who—what class Servant are you?" she demanded.

The man didn't answer.

He just stood there, brows furrowed, scrolling through the invisible screen in front of him.

...Gaia, seriously? Who writes these onboarding messages? he muttered in his mind. No excess reality-warping without planetary oversight… no genocide unless sanctioned… cool, cool.

Then he looked up.

Saw her.

"Wait... You're Bazzet."

He looked past her shoulder—and his eyes narrowed.

There was no delay, no warning.

Leo vanished from where he was standing.

Kirei barely had time to react.

A hand tore through the air and clamped around his jaw, wrenching his face sideways with a sickening crunch.

Leo slammed him into the wall hard enough to crater the stone, fingers digging into the priest's flesh.

"Yo...," Leo whispered as he picked the priest up by his collar.

Kirei's reinforced body flared with mana but Leo had already rotated him midair, dislocating both shoulders with one seamless motion.

"I've waited two lives to do this," Leo continued, his voice casual, . "You. Me. We go way back.... Gacha banners. Mapo tofu."

Kirei tried to speak, gurgling blood.

Leo leaned in and whispered:

"That unskippable laugh and your 0.6% SSR rate haunts me.... even more than the war."

And then Leo slammed him through the summoning altar, shattering the marble table into hundreds of shards.

Kirei's ribs caved in, blood spraying from his mouth as his spine cracked.

He tried to reach for a dagger— or a black key.

Leo grabbed his wrist and twisted it until bone popped like wet twigs, then punched directly into his gut, crushing intestines into sludge.

Kirei vomited black blood, gasping in agony.

Leo pulled him close once more.

"Nothing personal, priest," he said softly. "But the Black Keys? Really? You made me spend thirty rolls just to pull dirt."

And then Leo dropkicked him across the chapel, sending Kirei through a stained-glass mural of a saint.

Silence.

Bazzet stared, mouth half open, Command Seals glowing on her hand but now forgotten from the sheer randomness of events.

"…What. The hell. Was that."

Leo turned back to her, completely calm.

"Oh. Yeah. Sorry about that. That guy was about to stab you."

"You're welcome."

He straightened his coat as he said that.

Bazzet's eyes still wide asked in a nervous voice. "Are you the Irish Hero… Cu Chulainn?"

Leo smirked, tilting his head ever so slightly.

"Fortunately, no." He paused, then added under his breath, "Though I probably still have E-rated luck, like the guy...."

She barely caught the last part, but her expression shifted from nervous confusion to visible irritation.

"Then who are you?"

Leo stared at her for a long second—just enough to make it uncomfortable.

His eyes, burning softly with those strange concentric rings, locked onto hers like he was trying to judge the depth of her soul.

For a fleeting moment, Bazzet felt it—an immense danger from leo.

Then Leo's lips curled.

Its time to Aura farm....

Leo never broke eye contact as he walked forward—slow steps that echoed like the ticking of a clock counting down to something.

With each footfall, the temperature in the room dropped unnaturally, a creeping chill that spread at the edges of the stone floor.

But paradoxically, all the metal in the chamber—sconces, dagger hilts, shattered key fragments—began to glow red-hot.

They hissed and twisted under their own heat, warping and buckling as if some law of nature had been quietly revoked.

A faint smell of brimstone curled into the air, sulfuric and bitter, lacing itself into Bazzet's breath.

She stood her ground.

But her hearbeat betrayed her.

Leo stopped just a breath away.

His crimson-gold eyes—held her in an indecisive hold like a chain.

It was hypnotic to look into them.

"Who I am… is a very good question," he said softly.

His voice was low and thoughtful.

"Even I don't really know that."

Behind him, the frost was visibly spreading across the stone, crawling in spiderweb cracks underfoot.

At the same time, the metal brackets near the windows screeched and split open with a sharp hiss of vapor, unable to hold their form.

By the time Leo stopped speaking, he was close enough for Bazzet to see the fine motes of heat distortion rising from the patterns on his coat—just barely held back by some invisible force.

He leaned down slightly, just enough to match her height.

"I can be called many names," he murmured.

There was no menace in his tone just serenity.

"But I prefer to be called Leo."

Then he smiled.

"Though from a human perspective…"

A soft cracking noise split the air as a nearby mirror warped—ice and fire meeting in the same breath.

"You can call me the actual Satan."

Bazzet blinked.

She didn't move.

You can call me the actual Satan.

The words echoed in her skull like a dropped coin in a deep, hollow well.

She didn't process them at first. Her brain just… paused.

Then, slowly, her hands started to tremble.

"No…" she whispered.

Her throat was dry.

Her voice cracked as she repeated it louder, like saying it again would undo the meaning.

"No, that's not possible … That's not what I summoned."

She looked around—at the ruined summoning circle, the molten metal fixtures, the frost creeping along the floor like veins of ice and she realized she had no control over any of this.

She stumbled back, breath hitching in her throat.

"No, no, no—this was supposed to be Cu Chulainn. I— I followed the ritual, I carved every line right, I used the right catalyst—"

She clutched at her chest as her breathing started to stutter.

Each breath came faster.

Shallower.

Her heart thundered in her ears, drowning out everything else.

She had brought the devil into the world.

Did she just doom the world..?

Her legs buckled, and she fell against the nearby wall, hand smacking stone as she tried to steady herself.

Her breaths came in short, desperate gasps now.

Her mind ran in spirals:

This isn't real. This can't be real—

And through it all… Leo just stood there.

Watching her.

Unblinking.

He stood there—not because he expected this, but because he was trying to decide how to deal with it.

Leo scratched the back of his neck, watching Bazzet slide down the wall, her breaths turning ragged and panicked.

Yeah… okay, he muttered in his mind. In hindsight, maybe that line was a bit much.

He hadn't expected this kind of reaction.

Sure, some disbelief.

Maybe a raised voice, or a Command Seal flaring out of caution.

But a full-on panic spiral?

That was… well. Not out of the question when seriously considered.

Then again, he considered, she was a proper Magus.

Old blood. Clock Tower-trained. The kind of person who knew what certain names meant—and what kind of madness they brought with them.

Of course she'd freak out.

…Honestly, this one's on me, Leo said in his mind ,nodding a little.

A small thud cut through the tense air.

Bazzet slumped to the side, her eyes rolling back slightly as her breathing lost rhythm—and then steadied as unconsciousness took her.

Leo blinked.

"Oh yeah ... That works."

He let out a soft exhale, stepping forward and picking her up in a bridal carry gently.

He didn't find a place to put her down because his dumbass had melted most metal....who was he kidding he just wanted to mess with her more

So Leo sat cross-legged putting her head on his lap brushing a bit of hair out of her face.

"I'll explain everything when she wakes up," he said quietly.

"I should …Probably leave out the part where I called myself Satan right off the bat next time," he added under his breath.

From Leo's shadow, someone emerged.

It was the little terrorist bird.

Ronan.

He gave one sharp Caw, wings fluttering as he shook off the last wisps of void clinging to him.

Leo glanced at him and nodded. "You're up."

Ronan tilted his head.

Leo spoke calmly. "Matou household. Find it...Quietly... I'm looking for someone named Shinji."

Ronan didn't reply.

He gave a very pointed caw, hopped twice in irritation, then flew up onto a nearby beam and pecked it once.

Irritated at being on the recon again.

Leo shrugged. "Because you're better at it."

Ronan made a rattling throat-noise of disapproval, then launched off the beam in a burst of midnight feathers.

As he soared through the broken stained-glass window, his wings didn't make a sound.

---

[After the death ]

Leo let the last echoes of Ronan's vision fade after looking at his handiwork for some time.

Shinji Matou was dead—pinned to a blood-soaked floor like an insect in a display case.

One less monster breathing.

In his eyes Shinji was someone who deserved to be killed even as a child.

Considering his rapey tendencies started as a child too.

He took quite some inspiration from Final Destination...it was actually kinda fun.

Obviously not for the receiving party.

The chapel's silence closed back in.

Leo rolled his shoulders, feeling that faint after-buzz of soul-energy coil into his circuits.

Shinji's essence would take a while to digest and turn into pure energy as it was a new kind of soul and Leo wanted to analyse it and replicate it first.

Just then, Bazzet stirred, a soft groan escaping her lips as her senses returned.

Her head shifted slightly—resting against something warm.

Solid.

Her eyes blinked open.

She came face to face with Leo.

No space, no mercy.

He was staring down at her with amused eyes.

Her body reacted before her brain did—snapping upright like a board, stiff as a corpse at inspection.

Leo laughed, low and unbothered.

"Easy now. You don't have to be so tense. I'm not destroying the world," he said, voice casual and calm. "Not yet, anyway. My role only really kicks in during the Land of Steel."

He was lying through his teeth.

Confidently.....Effortlessly.

Bazzet narrowed her eyes. "…Why should I believe that?"

There was a pause—then she added, "You're the goddamn Lord of Lies."

Leo raised a brow, then gave a theatrical sigh.

"Lying? Please." He waved a hand dismissively. "That's beneath me. I may have taught the craft to a few fortunate souls, sure—but powerful beings like me don't need to rely on lies."

He leaned closer, smirking like the bastard he was.

"I always tell the truth."

Although it all sounded very convincing—far too smooth, far too practiced—Bazzet wasn't stupid.

She was a seasoned Enforcer, after all.

Trained to spot deception, read danger, and prepare for it.

But what exactly do you do when the danger is sitting right in front of you, and you can't discern shit..

Even if she called on her Command Seals, it probably wouldn't do anything.

A being like that would shrug them off like lint from a jacket.

And if she tried to kill him?

She'd probably get incinerated for the effort.

So, she did what was logical.

She gave up control.

Resigned herself to her fate.

Totally not because a very questionable part of her psyche had a weakness for men who were dangerous to her health, future, and general existence.

Nope...Absolutely not that.

And she definitely didn't think he was kind of beautiful.

She wasn't staring at him or anything. Just… observing.

From a tactical standpoint.

Beautiful was just the word her brain picked.

Absolutely nothing weird about it.

=======================

Power Stones and Reviews please