DxD : Actually Satan..?

[Bonus Chapter 4/8]

Above North America – In the Devilcraft

Silence filled the cockpit.

The sky outside was endless and dark, the lights of North America far below, a glowing network of mortal ambition.

Leo sat still, eyes forward, arms folded.

Beside him, Illya gazed at the small containment unit wedged securely into the console between them—a black, rune-inscribed pot.

Planted like groot when he was to regenerate.

It looked more like a twisted, dry piece of bark than the groot though.

Illya squinted.

"I still don't believe this is as important as it sounds," she muttered.

Leo didn't look at her. "But it is."

She frowned. "I mean, I can't even tell the difference between this and a normal twig. Are we sure we didn't just collect some cursed bonsai?"

Leo finally glanced at her, one brow raised. "That's probably not a twig... It's likely an artificially designed lifeform—bioengineered, perhaps—to assimilate into a planet's ecosystem...Looks harmless because it's mimicking local flora...Probably the equivalent of a sleeper agent. Just... arboreal."

Illya blinked. "Oh. So... it's trying to sneak-terraform Earth?"

Leo shrugged. "Maybe. Or maybe it's a backup plan for a race that no longer exists."

She looked back at the pot. "…I'm naming it Twiggy."

Your naming sense is ass leo thought but since he didn't care, hedidn't object

But after a second, he spoke again.

"Let's forget about it. I have a lookout trip to make."

Illya tilted her head. "Lookout trip?"

"You're not coming," Leo said, handing her a small folder from the side compartment. "Because meanwhile I do this, I need you to help me make something or rather someone's lookalike humunculus."

Illya opened it—and blinked at the image.

A tall, androgynous figure with pale skin and eyes that looked like moss under moonlight. Long green hair, serene smile, standing in a field of white.

"…Who is this?"

"You don't need to know," Leo said simply.

Illya looked up, not questioning further "What do you need them for?"

Leo smiled. Not kindly. It looked like the smile of someone five steps ahead on the board.

"The ultimate ragebait.", he said.

Illya didn't question further.

Maybe she was starting to learn which answers were safe to pursue.

In her mind, she assumed this was some powerful subordinate of his. Maybe a previous ally.

Or someone whose form was ideal for battle.

What she didn't know was that Leo was orchestrating a scene.

A reunion.

Not for himself—but for a goddess.

One he intended to summon.

A certain goddes that had a connection with venus.

A fragment of Ishtar, still tethered to the mortal realm through myth and memory.

The Bull of Heaven required bait.

And Leo was building it.

"I also need another clone," Leo said casually.

Illya, who had been staring at Twiggy again, turned. "Who?"

Leo handed her another image.

Black twin tails. Blue eyes. Red jacket.

"…Rin Tohsaka?"

Illya frowned. "Can I ask why?"

There was a subtle tightness to her voice.

She didn't know why the idea of him requesting another girl's clone rubbed her wrong—but it did.

"It'll serve as perfect vessels," Leo said, "for the future stage I'm building. ."

Illya didn't press him.

Not because she didn't want to.

But because she'd started to realize—there were pieces Leo moved she couldn't see, and perhaps wasn't meant to.

It was fine to her he was the literal Satan after all.

So, the cockpit fell back into silence.

The Devilcraft cut across the Pacific like a ghost, heading east toward Japan, faster than the human eye could register.

A blur among stars.

Twiggy twitched.

Just once when it left the American vicinity.

That did not escape Leo's perception.

---

Tohsaka Mansion – Backyard

The Devilcraft hovered just a few meters above the old stone garden behind the Tohsaka estate, its massive shadow stretching over the perfectly trimmed hedges and cracked tiles like an omen wrapped in divine metal and engine roar.

The cargo bay hissed open.

Leo gestured lazily toward the edge. "Alright. Hop off."

Illya looked down at the yard below, then back at Leo. "You're just dropping me off?"

"Yeah. Go get the blood sample."

"…And how am I supposed to get back?"

Leo gave her a look. "You can run."

Illya's eyes narrowed instantly. "Are you calling me a brute?"

"No," Leo said without missing a beat, "I'm just reminding you of your own ability. You do have demigod-tier muscle density now."

"Shut up!" she huffed, stomping to the edge. "You're the worst."

Leo shrugged. As she jumped down—gracefully despite her anger—he called out, "Wait, come back."

Illya turned around warily.

Leo tossed a black flip phone down toward her. She caught it reflexively.

"Only one number's saved on that. Call it when you're done. Tell them Leo said to bring a car to the Tohsaka mansion."

Illya flipped it open and squinted at the name.

"…Bazett?"

Leo didn't answer. The cargo bay door had already begun to close behind him.

With a sudden upward roar, the Devilcraft took off vertically before vanishing into the clouds with a sonic boom and a ripple of golden light across the sky.

Illya stood there, wind blowing through her hair from the aftershock, staring up.

Then she looked at the phone in her hand.

"…Tch. Typical."

She turned and marched toward the mansion.

---

Contrary to what anyone might've guessed, Leo wasn't heading to South America.

Not yet.

Inside the cockpit, Leo sat with his feet up on the console, one eye on the navigation feed, the other closed in idle thought

While his other brains monitored the now sealed mister Twiggy.

Destination: Russia.

Target: A conveniently parked fleet of Su-57s.

Why?

Well, as Leo put it in his mind —

Because Su-57 sound cool. Also… why not"

The fighter jet had a sleek design, questionable stealth capabilities, and a pretty high mystery rating for a modern human weapon.

It wasn't legendary, but it could be—after all, perception was half the battle when molding reality.

He didn't need them.

But he wanted them.

There was a difference, and Leo was someone who acted on both.

His real goal, though… that came after.

Once the assimilation was done and the Su-57s were part of the Devilcraft's rapidly growing conceptual arsenal, he had something more complicated to deal with.

"The Spider…"

Leo muttered the name under his breath like it was a curse.

And it may as well have been.

"If I approach that thing, I die."

No ego in that. Just fact.

The Spider was a conceptual apex—something beyond conventional mystery, divinity, or magi-tech.

It wasn't even really a threat in the traditional sense.

It was just… there.

I need a workaround. Observation without presence..... I can't brute-force this one…

That's why the next part of the trip mattered.

Russia was just a distraction in reality he needed time.

Time to brainstorm.

Time to create an interface that could observe the Spider without triggering its defense pr whatever the hell it does.

Ugh… I'm going to need something metaphysically disposable.

Maybe even something he could lie to himself through—build a proxy so convincingly independent that even he didn't realize he was watching.

That might work.

He yawned.

Anyway… first things first.

He tapped a button on the console.

A schematic of a Su-57 appeared. Then another. Then twelve.

" Let's go steal some toys. "

---

Tohsaka Mansion – Rin's Bedroom

The air was filled with tension.

Rin Tohsaka stood barefoot near her dresser, still in her nightwear, her hands glowing faintly with gathered prana.

Across the room, Archer stood at attention near the door, every sense on high alert.

"It's a very advanced bounded field," Archer had said as he all but yanked Rin out of her sleep. " Someone really doesn't want you leaving."

Now, footsteps echoed through the hallway—measured, light, almost playful.

And then, the door creaked open.

A girl who looked eerily similar to Irisviel but with red hair stepped into the room.

"How cute," Illya said, pressing her fingers to her cheek as if physically overwhelmed by their little scene.

She even made the face—"🥺"

Archer immediately stepped between her and Rin.

"I take it we're past knocking," he muttered, half-drawing Kanshou with a flick of his hand.

Illya tilted her head.

"Don't worry," she said, tone honeyed and sharp, "I'm not here for a fight. I just need her to bleed a little. You, however…" she pointed at him, "are not welcome."

"That's cute," Archer replied dryly. "You think I take orders from—"

He didn't finish the sentence.

Because Illya had already moved.

With terrifying speed, she closed the distance and casually pressed her palm against Archer's face—her fingers wrapping around his face like gripping a ball.

"Shh....."

Then she pushed.

With a crack, Archer was sent flying backward through the wall like a ragdoll, dust and splinters flying as he crashed straight through the outer masonry and landed hard in the garden below.

Rin's jaw dropped.

Illya turned back to her, holding up what looked like a comically oversized syringe—shaped unmistakably like a knife.

"Don't be scared. I only need a few drops. Five at most," she said cheerfully. "Six if you resist."

Rin slowly backed away toward the window.

"Why… why are you doing this?!"

Illya shrugged, stepping closer, expression unchanging.

"Beats me ," she giggled, the syringe-knife catching the moonlight.

"Hold still, okay? This'll only hurt a lot."

A sudden snap of air interrupted her—

A blur of steel sliced through the room.

The sword buried itself clean through Illya's skull, shot with deadly precision by Archer from the garden below.

Rin gasped, covering her mouth in shock as blood splattered across the floor and her dresser.

For a moment, there was silence.

Even Archer, still recovering from the impact of his crash, paused—that wasn't a Servant.

He could tell by the prana signature.

This was a living person, flesh and blood, yet… that hit should've killed anyone.

But Illya didn't fall.

Instead, she raised a hand to her temple, wincing as if someone had just given her a migraine.

"Ow,Ow ..." she muttered, her voice shaky and in pain, "that really hurt."

With casual defiance of everything Archer knew about anatomy, she pulled the sword out of her head—a slick sound following the blade as brain matter and blood dripped down her face.

The next second, the hole in her skull sealed shut, muscle knitting, bone reforming, skin smoothing over.

"That was rude and painful", she said with a pout, tossing the sword aside.

Before anyone could react, she spun and threw the syringe-knife directly into Rin's stomach.

It embedded itself with a dull thunk, a clean shot that caused the magus to double over with a pained grunt.

"Got what I needed~" Illya chirped.

But she didn't stop.

Her head jerked toward the broken wall—and Archer.

Illya launched herself through the opening like a missile, landing on her feet with a heavy crack of stone.

Archer had just enough time to rearm before her fist was swinging toward his side.

He blocked.

She pressed forward.

The fight began in a flurry of punches and blades.

Illya was fast, strong—recklessly strong.

But Archer was the clear master in battle; his form was sharper, refined, and for a few moments, he held his ground.

Then, he countered.

A flash of steel, and with precise aim, he brought his blade down clean through Illya's arm, aiming just below the shoulder.

It should have worked.

It did, for half a second.

But as the upper half of her arm fell away—already mid-air—Archer saw something that chilled him.

The wound was already healing.

By the time the severed limb hit the floor, her arm had completely regenerated.

Smooth, unblemished skin—no blood, no scarring.

Just a pained girl staring at him with a now fully functioning arm.

Illya looked down at her shoulder, flexed the muscles, and then looked back up with a little annoyance.

"You're really good at this," she said, almost admiringly.

Then she cracked her knuckles.

"But I'm not a little princess anymore."

And she lunged again.

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Power Stones and Reviews please