The Weapon Genius: Anything I Hold Can Kill Chapter 71 71: The Sentinel

The red letters pulsed against the wall, dimming, then glowing brighter in slow, deliberate beats. Not flickering like a fla—this was controlled. asured.

Like sothing was waiting.

Jin didn't move at first, his body still as he took in the sight. The weight of the silence pressed down on them, thicker than before. No one spoke, but he could feel the tension in the air, winding tighter with every second.

Sothing was here.

And it wasn't human.

His mind flickered back to Echo's ability. He had felt nothing up here. No footsteps. No movent. No breath.

So whatever was doing this wasn't normal.

Jin exhaled slowly, his hands flexing at his sides. Then, he took a step forward.

"Why should we leave?"

The words echoed through the room, cutting into the heavy quiet.

The pulsing stopped.

For a mont, nothing changed. The red marks stayed still, no longer shifting, no longer glowing—just waiting.

Then, slowly—the ssage on the wall began to fade.

The red bled away, soaking into the surface like ink dissolving in water. A second later, new words ford in its place.

"YOU DO NOT BELONG HERE."

Areum exhaled sharply. "I don't like that it can hear us."

Echo let out a slow breath. "Yeah. That makes two of us."

Jin's eyes stayed locked on the writing. His voice was steady when he spoke again.

"Why does this place belong to you?" His gaze flickered across the shifting letters. "What are you?"

The silence stretched.

Then—sothing changed.

The air grew heavier—not just thicker, but charged, like a storm about to break.

The floor beneath them gave a faint, almost imperceptible tremor, like the firehouse itself had finally decided to acknowledge them.

And then—the next words ford.

"I AM AESTROS."

The na lingered, glowing brighter than the others had before it.

Then, more words followed.

"I WAS GIVEN A TASK."

"THIS PLACE IS MY TERRITORY."

"I MUST PROTECT IT."

Jin inhaled slowly.

It didn't say it belonged to it.

It said it was given a task.

Not born here. Not bound forever. This wasn't a mindless guardian—it was sothing following a directive.

Jin took another step forward, watching the way the red markings pulsed slightly, adjusting to his movent.

"A task?" he asked. "By who?"

A long pause.

Then—

"THE SYSTEM."

The letters burned brighter, pulsing once before settling.

A cold weight curled in Jin's gut.

The system had assigned this thing a task.

Just like it had assigned him one.

Just like it assigned all of them.

Haneul shifted beside him, tightening his grip on his staff. "So… you're trapped here?"

The words shifted again, almost as if it were considering the question.

"NO."

"I CHOOSE TO FOLLOW MY TASK."

Jin's brows furrowed. "Why?"

The next words ford without hesitation.

"BECAUSE IF I FAIL, I WILL LOSE EVERYTHING."

A sharp silence settled over the group.

Jin exhaled. He knew that feeling too well.

But before he could say anything, the letters began to shift again.

"HAVE YOU T OTHERS LIKE ?"

Jin stilled.

Sothing about the way it phrased that sent a ripple through his mind.

"Others like you?" Haneul asked cautiously. "You an… things that live inside buildings?"

The glow flickered—like it was amused.

"THAT IS NOT WHAT I AN."

"OTHERS WHO ARE NOT HUMAN."

Jin's breath slowed.

His mind flashed back to a darkened plaza.

To seven shifting masks. A voice speaking through death itself.

The Seven Faces of Death.

The Qi Sha.

Sothing that could think. That could talk.

Jin exhaled. "Yeah," he said. "We have. The Qi Sha."

The firehouse shuddered.

The pulsing glow of red deepened, stretching unnaturally across the walls, flickering like sothing had cracked beneath the surface.

Then—new words burned into the wall, sharper than before.

"THAT WRETCHED THING STILL WALKS?"

The response was imdiate. Sharp. Unforgiving.

Areum tensed, her fingers curling at her sides. "Still walks?" she repeated under her breath.

Jin didn't miss the phrasing either.

It wasn't surprised the Qi Sha existed. It was surprised it was still alive.

"How do you know about it?" Jin asked carefully.

The words changed instantly.

"WE CLASHED."

"WHEN IT FIRST CA TO THIS WORLD, I SOUGHT TO END IT."

Jin's breath slowed.

The Qi Sha had fought this thing?

That would an it had been here since the start—since the system arrived.

Before he could fully process it, the next words appeared.

"ITS PRESENCE FADED. I BELIEVED IT DESTROYED."

Jin's mind flickered back.

To the Ye Ling.

To the first form they had seen before it transford.

The system had let it evolve into the Qi Sha.

But now, that didn't seem like an evolution at all.

It wasn't gaining power.

It was regaining it.

Jin exhaled slowly. "It wasn't destroyed," he said. "It just changed."

Aestros did not respond right away. The words on the wall flickered, then burned out—like it was considering sothing.

Then, slowly, a new ssage ford.

"TROUBLING."

Echo crossed his arms. "So you know the Qi Sha, but I've never heard of you," he muttered. "I an, I know what the Qi Sha is—it's a god of death. But you? I don't recognize your na at all."

He tilted his head slightly. "Are you a god, too? Or sothing else?"

The walls rumbled.

Not like before. Not in anger.

But in certainty.

Then, the words appeared.

"NO."

"I AM NOT A GOD."

"NOR A MONSTER."

The last phrase carried weight.

Like it had been called that before.

Jin straightened slightly. "Then what are you?"

The next words ford, slow and deliberate.

"I AM A BEING."

"ONE OF MANY."

Jin narrowed his eyes. "One of many?"

Aestros didn't hesitate this ti.

"EVERY STORY YOU HAVE HEARD—EVERY MYTH, EVERY LEGEND—"

"THEY EXIST."

The weight in Jin's chest shifted slightly as the truth settled in.

Areum's arms folded tightly, her voice unsteady. "You an… stories from Earth?"

Aestros responded without hesitation.

"NOT JUST EARTH."

"ALL WORLDS. ALL REALMS."

"EVERY BEING THAT HAS EVER BEEN SPOKEN INTO EXISTENCE—"

"THE SYSTEM TAKES FROM THEM ALL."

Silence.

A different kind of silence than before.

This wasn't the tension of being watched.

This was the silence of understanding.

Jin exhaled slowly. "You said the system takes them," he said carefully. "You an… like the Qi Sha?"

The next words appeared imdiately.

"YES."

Echo let out a breath, shaking his head. "So the system isn't just ssing with our world. It's running so twisted experint on everything it can get its hands on."

For the first ti, Aestros hesitated.

Then—it responded.

"YOUR WORLD IS STILL YOUNG."

Jin's stomach twisted slightly.

Sothing about the phrasing made his skin crawl. "Young?"

The next words appeared slowly.

Like they carried weight.

"THE SYSTEM DOES NOT WASTE EFFORT ON SMALL PREY, IT IS GIVING YOUR WORLD TI TO GROW STONGER."

"SO YOU ARE SAFE, FOR NOW."

Jin exhaled sharply, rolling his shoulders back.

This conversation was over. He could feel it.

Aestros had answered more than he had expected. Pushing further would be reckless.

Instead, he nodded slightly, stepping back.

"...Thanks for not killing us," he muttered.

A pause.

Then—the red glow in the room dimd, fading completely.

The firehouse returned to silence.

For a long mont, none of them moved.

The red glow was gone, swallowed back into the walls, leaving only the dim, flickering ergency lights overhead. The firehouse was quiet again—but not in the way it had been before.

This ti, it wasn't watching them.

Jin let out a slow breath, running a hand through his hair. His fingers brushed against his temple, but it wasn't enough to push away the weight pressing at the back of his skull. What they had just learned... it was too much to process all at once.

Beside him, Echo cracked his knuckles, rolling his shoulders before exhaling sharply. "Alright," he muttered. "That was... sothing."

Haneul still had his staff gripped tightly in one hand, his expression distant. "More than sothing," he murmured. "That thing—Aestros—it's seen more than we can even imagine."

Areum folded her arms, glancing toward the wall where the words had been just monts ago. "It fought the Qi Sha," she said, voice unreadable. "And it thought it had won."

The words settled over the group like a second weight, pressing against the first.

Jin didn't respond imdiately. Instead, his fingers curled slightly around the strap still held in his other hand.

The one that had fallen before they even knew Aestros was there.

He glanced down at it now, running his thumb over the old, worn material. Sothing about it felt... significant.

He wasn't sure why.

But instinct told him to keep it.

Without a word, he slid the strap into his pocket.

Then, finally, he turned to the others. "Co on," he said, voice quieter than usual. "Let's get out of here."

Nobody argued.

One by one, they fell into step behind him as they made their way back down the stairs.

The descent felt longer than before. Not physically, but ntally.

The weight of the conversation, the implications of it all, followed them.

When they finally stepped back into the main hall of the firehouse, Echo let out a sharp breath, shoving his hands into his pockets. "Gotta admit," he muttered, "was kinda expecting the door to be locked or sothing."

Areum shook her head. "We're not prisoners," she said. "Aestros didn't want to keep us here. It wanted us to leave."

Echo shrugged. "Doesn't an I wasn't expecting so horror-movie shit on the way out."

Jin ignored their back-and-forth as he pushed open the front doors. The evening air was cool against his skin, a stark contrast to the oppressive heat of the firehouse.

He took a slow breath.

Then, he stepped outside.

The streets were still empty. Too empty.

Even after everything they had seen, everything they had learned, that emptiness felt wrong.

Haneul stopped just beside him, gripping his staff loosely. "So..." he started. "That was a lot."

Jin didn't respond imdiately. He just nodded slightly.

A lot.

That was one way to put it.

Areum crossed her arms, shifting her weight. "I don't know about you guys, but after all that, I feel about the size of an ant."

Echo let out a short laugh, but it wasn't his usual sarcastic one. "Yeah," he muttered. "Gotta say, being told your entire world is basically irrelevant on the cosmic scale? Real humbling experience."

Jin exhaled through his nose. "We're not irrelevant," he said. "We just haven't been pushed far enough yet."

Areum raised a brow. "That's supposed to make feel better?"

Jin glanced toward her. "It ans we have ti."

She fell silent at that.

Haneul gripped his staff a little tighter. "But not forever," he murmured.

Jin nodded once.

Not forever.

The system wasn't going to hold back indefinitely.

And when that ti finally ca…

They needed to be ready.

Without another word, he turned away from the firehouse and started walking.

The others followed.

And as they disappeared down the empty street, the firehouse stood silent behind them.

Waiting.