/* "This story draws inspiration from the 'system' in Solo Leveling while taking place in the Fate/Extella Link universe. The narrative follows the structure of Fate/Grand Order's Singularities as its setting." */

Happy Reading!


The cargo transport rumbled to a halt, its grinding wheels echoing through the underground base. Crouched in the cramped space between crates, Ren remained still, listening as the vehicle powered down. The distant hum of machinery filled the air—a constant, oppressive reminder that he was deep in enemy territory.

A hiss of decompressing air signaled the cargo door's release, allowing a sliver of artificial light to pierce through the darkness of his hiding spot. He counted the seconds, muscles coiled, heart steady. Then, with measured control, he activated Third Eye.

His senses sharpened, details snapping into hyper-clarity—the scuff marks on the metal floor, the faintest tremors of movement beyond the walls, the rhythmic pulse of an unseen mechanism somewhere deep within the base.

The crate he had slipped into was now nestled among others in a dimly lit storage room, the air thick with the scent of oil and steel. Through the narrow gaps between wooden planks, he spotted two Auctoritas Soldiers standing at attention. Tall, imposing mechanical sentries with glowing crimson optics, their patrols were precise, methodical. No fatigue. No hesitation. Just cold, programmed efficiency.

Ren inhaled slowly, steadying his nerves. A direct confrontation was out of the question. Silently, he eased the crate open just enough to slip through. The moment his feet touched the ground, he moved.

With a burst of Phantom Step, Ren vanished into the shadows. The air pulsed with static in his wake, but the exertion came at a cost—a sharp burn flared through his legs, draining his stamina. He gritted his teeth. Phantom Step was still new, still unpredictable. He couldn't overuse it.

Landing behind a stack of crates, he stilled, barely breathing as one of the sentries shifted. The whir of gears. The creak of metal. A sensor sweeps.

Seconds stretched.

Then, the sentry resumed its patrol.

Ren pressed forward; each step precise. This was nothing like a heist. No second chances. No escape routes. One mistake, and it was over.

A faint mechanical whirl caught his ear. His instincts flared—he pressed himself against a rusted support beam just as a Surveillance Drone drifted into view.

A cold bead of sweat traced his temple.

The drone's searchlight cut through the darkness, its sensors sweeping in a slow, methodical arc.

He remained deathly still.

He had evaded countless security systems before, but Karl der Große's forces were different. This wasn't just advanced technology—it was oppressive, relentless, like a predator sniffing out prey.

The drone hovered feet away.

Every fiber of his being screamed to move, but he held his ground. Third Eye picked up the rhythm in its scanning cycle, the precise window where it would shift away. If he moved too soon, he'd be caught. If he waited too long—

The light flickered past.

Ren moved.

Phantom Step. A seamless transition into the cover of a fallen support beam. The burn in his legs flared, but he ignored it. The drone hesitated, its mechanical lens whirring as if sensing something—

Then it drifted away.

Ren exhaled softly. Too close.

He pressed on, navigating through the base with practiced precision. Each hallway, each corner, a potential deathtrap. But the deeper he ventured, the stronger the air felt—thick, charged with something unseen.

A pulse.

His Third Eye caught it—a distortion, a vibration unlike anything else in the base. Faint, but unmistakable.

Something was ahead.

Following the sensation, Ren arrived at a door unlike the rigid steel walls surrounding it. This one hummed faintly with energy. Carefully, he eased it open just a crack—

And his breath hitched.

Inside, rows of assimilated Servants stood motionless, their expressions hollow, their eyes vacant. Not dead. Not alive. Just… waiting.

At the center of the room, suspended in midair, a strange machine pulsed in slow, rhythmic waves.

The sound it emitted wasn't mechanical. It wasn't natural.

It was alive.

And then it struck.

A sudden force crashed into Ren's mind—invasive, relentless. It slithered through his thoughts like a phantom hand, grasping at his will, urging submission.

[Warning: Mental Interference Detected]

[Attempting to Enforce Assimilation…]

[Effect Weakened: Unshaken Resolve (Passive) is in effect.]

[Mental Resistance: 90% 85%]

The pressure mounted, like invisible chains tightening around his thoughts. The machine pulsed again.

[Mental Resistance: 85% 80%]

Ren clenched his jaw. The whispers weren't just external anymore—they slithered inside, weaving false thoughts into his own. A subtle voice in the back of his mind whispered surrender, telling him how easy it would be to let go.

He refused.

His will slammed against the encroaching presence like an unbreakable shield. But even shields crack under enough force. The pressure wasn't fading. It was stacking.

[Mental Resistance: 80% 75%]

Ren exhaled sharply. He couldn't stay here.

The longer he remained, the more the machine's influence would erode him. Anyone else—even a skilled Magus or Servant—would have fallen instantly.

Unshaken Resolve was the only reason he was still himself.

But even that had limits.

His gaze flicked toward the pulsing device at the center of the room. The source.

He had to destroy it.

His fingers brushed against the gem Rin had given him. A tool for emergencies. A way out.

But then the realization hit him—

Destroy it with what?

His fists? Impossible. He had no means of attack. And even if he did—the moment he struck, the assimilated Servants would wake.

[Mental Resistance: 75% 72%]

His breathing slowed. He could feel it now—the whispers weren't fading. They lingered, clawing at the edges of his mind, waiting.

If he stayed too long—

No.

He took a step back. The moment he moved, the pressure lessened—but it didn't vanish. The whispers faded, but the presence remained.

[Mental Resistance Stabilized at 72%]

He had resisted this time.

But he wasn't unscathed.

The machine had left its mark.

Silently, he withdrew, the door sliding shut behind him. His pulse was steady, his mind clear.

This wasn't magic. Karl's control wasn't some mere enchantment. It was a machine-born enslavement.

And if a machine could enslave them—

Then a way must exist to break them free.

But that would come later.

For now, he pressed onward, deeper into the base.

Jeanne and the others were waiting.


Ren moved through the cold, oppressive corridors with practiced ease. Every step was calculated, deliberate—no room for hesitation. Third Eye, the same ability he had relied on as a Phantom Thief, was his most trusted ally now, its power sharpening the more he used it. The base around him, cold and metallic, closed in like a vice, but Ren welcomed the discomfort. It meant he was getting closer.

His senses stretched outward, reaching for the faintest vibrations, the smallest disturbances. Third Eye peeled back layers of the environment, revealing hidden details beyond normal perception. Every shift in the air, every tremor in the walls, whispered secrets, and he listened.

The hum of the base's machinery was omnipresent—a low, unrelenting drone that gave the place a strange semblance of life. But beneath it, another pulse throbbed, faint but insistent. It was different from the usual mechanical noise. This pulse was alive. Subtle but unmistakable.

Ren froze. Instinct sharpened into focus, an alarm echoing at the edge of his mind. He concentrated. Third Eye flared open—his perception sharpening, peeling back the veil of reality to reveal hidden truths. The environment flickered in his mind's eye, and the pulse grew clearer.

There.

A rhythmic thrum, like a heartbeat. Steady. Controlled. Jeanne.

His chest tightened as certainty settled over him. Yet doubt gnawed at the edges of his mind. Could it be a trap? The pulse was too steady, too precise. It didn't waver like an illusion, but that could be exactly what Karl's forces wanted him to think. What if it was another prisoner, a lure to draw him in? Or worse—an enemy using Jeanne's resonance to deceive him?

Ren clenched his jaw. Trust your senses, not your doubts.

Unshaken Resolve steadied his mind. No hesitation. The longer he waited, the greater the risk. If Jeanne was truly here, every second counted.

He moved forward, slower now, more cautious. Each step was fluid, controlled—there was no room for recklessness. Every corner could hide danger. Every shadow could conceal an ambush. But he had been trained for this. Move with precision. Stay ahead of them.

The pulse grew stronger as he pressed deeper into the facility, resonating in his very bones. It was slow, steady—like someone fighting to stay alive. She was still holding on.

His pace quickened, but only slightly. Mistakes were unforgivable here.

A turn, then another. The corridor narrowed, lined with surveillance equipment. Cameras swiveled lazily, unaware of his presence, their sensors temporarily blinded by his calculated movements. But as he neared the end of the hall, something shifted. The air grew colder, an oppressive weight settling on his shoulders. A presence lurked in the unseen corners of the space, watching.

He was close. Too close.

Ren slowed, his senses reaching outward. Jeanne's presence was undeniable now, but the tension in the air was thicker, charged—as if something unseen was waiting.

The reinforced door at the corridor's end loomed before him. Energy pulsed from behind it, the sensation vibrating through the metal like a warning. And something else lingered—a deeper, insidious awareness.

He wasn't alone.

Ren tested the door. Locked. Expected.

Ren examined the door, searching for any weaknesses. He had no tools, no gear—only his instincts. His fingers traced along the seam, feeling for the locking mechanism. There had to be a way in. With a measured breath, he pressed against the weakest point, testing its give. A simple lock-pick wouldn't work—not that he had one—but a precise application of force in the right place might. His breathing slowed. Each second stretched into eternity.

A faint shift in the mechanism. A vulnerability.

The door unlocked with a faint, satisfying sound. Ren exhaled softly, slipping inside.

The air within was thick, heavy with silence. Dim lighting cast long shadows, obscuring most of the room. But his focus never wavered. His gaze locked onto the source of the pulse.

Jeanne.

Shackled to the wall, her body bore the marks of exhaustion—bruises, battered skin, labored breaths. But she was alive. Barely. Her eyes, half-lidded, struggled to focus, but she remained conscious. Still herself.

Relief surged through Ren, followed quickly by bitter anger. How had they let her deteriorate to this state? His fist clenched at his side. It was unforgivable.

But anger had no place here. He had a mission.

Ren moved carefully toward her, every step deliberate, every motion calculated. The chains binding her were a cruel symbol of her suffering, but Ren didn't let the sight distract him. His hand hovered near the restraints—he couldn't afford to act impulsively.

"No…"

Her voice, faint but unwavering, stopped him in his tracks. It was a quiet command, spoken with a strength that belied her condition. Ren froze, his breath caught in his chest. Her eyes, clouded with exhaustion and pain, still held an intense focus. She was struggling, yes—but there was no fear in her gaze. Only a sharp, calculating wariness.

"Who are you?"

The question wasn't just about his identity—it was a challenge. A demand for trust that Ren knew he had to earn. He could feel the weight of her suspicion, and for a moment, he hesitated. She had no reason to trust him, not after everything she'd been through.

"I'm here to help," Ren said, keeping his voice steady but quiet, matching the gravity of the moment. "I'm not one of them."

She didn't respond immediately. Her eyes didn't waver, studying him with a guarded intensity. "Help?" Her voice rasped with suspicion. "And why should I believe that?"

Ren understood the question all too well. After everything she'd endured, it was no surprise she wouldn't simply accept a stranger's word. Trust had to be earned, especially here. He took a breath, grounding himself. There was no room for doubt.

"I'm from the Vanguard," Ren's voice was calm, but there was a quiet urgency in it. "Rin sent me—along with Charlemagne. We've come to rescue you and the others."

For a moment, her eyes flickered, a subtle shift. A quick glance of recognition, or was it hope? It was fleeting, but it was there, just long enough for Ren to catch it. Her lips pressed together, her expression hardening again, but something in her softened—her stance wasn't as rigid. Maybe, just maybe, he wasn't another enemy.

"Rin…" Jeanne's voice broke the silence. Her breath was shallow, but she forced herself to keep her focus. "Charlemagne… You're really one of them?"

Ren nodded firmly. "I wouldn't be here if I wasn't."

She processed this in silence, weighing his words. Then her eyes sharpened, and she spoke with steely determination.

"If you free me now…" Her words were faint, but there was no softness in them. They were precise, cut with a sharp edge. "They'll know. The whole base will be on us. We'll be dead."

Ren's chest tightened, but he didn't flinch. Her unshakable resolve was there, as sharp and strong as ever. She wasn't pleading for mercy. She was trying to protect them both. He could see the strength in her—she hadn't given up, even when she was at her most vulnerable.

"I'm not going to do that," Ren said firmly, his voice low but unwavering. "We'll get you out. I just can't risk raising the alarm."

Jeanne's expression softened just a fraction. It wasn't relief—it was understanding. She was still herself, still holding on to that strength that had defined her long before Ren had entered the picture. It was as though she had already resigned herself to the fact that, even in her condition, her fight wasn't over.

Her voice dropped, though her words remained as precise as ever. "Get the others first," she urged. "They're the priority. Don't waste time on me."

Ren hesitated, caught between his promise to get her out and the urgency in her voice. Her unrelenting sense of duty hit him hard. She had suffered so much, and yet her first thought was still for the others—people that fought side with her, people who might be just as trapped as she was.

"Where are they?" Ren asked quietly, his voice barely above a whisper, though the weight of the question hung heavily between them.

"The northern wing," Jeanne said, her voice barely audible but carrying a cold clarity. "They're in reinforced cells. The doors are sealed tight, but…" She paused, catching her breath. "They're mostly unconscious. If you hurry, you might make it in time."

Ren nodded. "I'll be back for you," he said, quieter this time, with a promise in his voice. The words felt like a vow rather than a simple assurance. He wouldn't forget her, no matter what.

Jeanne's gaze softened slightly, her eyes momentarily filled with something unsaid—perhaps a mix of gratitude, pain, and trust, despite everything. It was fleeting, but it was there. The briefest flicker of connection between them.

As Ren turned to leave, Jeanne's focus shifted. Her gaze followed him, calculating, searching. She had to be sure—she couldn't afford to be mistaken now.

With a subtle concentration, she reached out with her ability to discern a person's true nature. It was a skill that had served her well before, though now, in her weakened state, it came at a cost. The sharpness of the information was dulled, but it was enough.

She caught his aura—the hint of something... different. Her breath caught as she murmured under her breath, "Trickster."

Ren's back was to her, already fading into the shadows. But the word lingered in the air, reverberating. Jeanne's lips pressed together in quiet realization, understanding that Ren wasn't just a servant of the Vanguard. He was something more, something unusual.

And for the first time, she felt a glimmer of doubt about the man who had just left her behind, a doubt she couldn't shake off, no matter how hard she tried.