The Villain Who Seeks Joy-Chapter 121: The Saboteur’s Signature

The Deep-Vein Station fell into a heavy, oppressive silence. The only sound was the steady, rhythmic glug-glug of water finally moving through the primary intake—a sound that should have been a victory, but felt like a countdown. I stood over the inspection hatch, the heat still radiating off the Centurion’s scorched plates.

I ignored the approaching footsteps of Valerius and his mages. I pulled a small magnifying lens from my kit and leaned into the throat of the iron pipe. The runes I had spotted weren’t just etched; they were micro-welded into the grain of the metal. It was a masterpiece of precision engineering.

"The pressure is stable," Valerius announced, his voice regaining some of its oily confidence as he stepped onto the walkway. "A crude but effective display, Valcrey. My mages will take it from here. We shall begin the restorative wards now that the ’debris’ has been cleared."

"This wasn’t debris," I said, not looking up. "Step back, Valerius. You’re blocking the light."

"I beg your pardon?"

I stood up, holding the lens toward him. "These runes. They’re called a Delayed Cavitation Loop. They don’t block the water. They vibrate the mana-stream at a specific harmonic that creates microscopic air pockets. Over six months, those pockets grow until they form a vacuum collapse. It’s a mechanical fuse."

I looked him dead in the eye. "This pipe didn’t fail. It was murdered. And based on the oxidation levels of the welds, these were put here during the ’routine maintenance’ three months ago."

The color drained from Valerius’s face. The mages behind him shifted uncomfortably, their silver staffs clinking against the metal grate. "That... that is a grave accusation. Our maintenance logs are sealed by the Royal Seal. No one enters these pipes without a high-tier clearance."

"Then you have a high-tier problem," I said.

I turned to Mira. "Record the sequence. Every stroke. If there are five more pumps like this, we need the exact frequency of the welds so we can tune the Centurion to neutralize them without opening every hatch."

"Armand," Cael whispered, leaning in close. "If this is sabotage, we aren’t just mechanics anymore. We’re witnesses. We need to get this to Lady Vesper before—"

He didn’t finish. A sudden, jarring vibration shook the walkway—not from the pipes, but from the stairwell. The heavy lead-lined doors at the top of the station slammed shut with a boom that echoed like a cannon shot. The magical lanterns dimmed, the teal light flickering and dying, leaving us in the sickly, rhythmic red glow of the Centurion’s eyes.

"The doors are sealed!" one of the mages screamed, scrambling toward the stairs. "The mana-lock is unresponsive!"

"Valerius?" I asked, my hand drifting to the leash in my chest.

"I... I didn’t... This is not my doing!" the Master Hydro-Mage stammered, his arrogance completely shattered. "The station’s security is controlled by the Central Hub!"

"The Hub just designated this room as a ’Contained Hazard,’" I said, listening to the high-pitched hum of the ventilation shafts closing. "They aren’t just locking us in. They’re cutting the air."

I looked at the Centurion. The construct was still hot, its internal loops spinning down from the previous surge. It was tired, and its armor was pitted from the cavitation pulse. But we didn’t have time for a cool-down cycle.

"Gareth, take the scouts and try to pry those doors," I ordered. "Cael, Mira, get the Hydro-Mages to pool their mana. We need a localized air-bubble or we’ll be unconscious in ten minutes."

"What are you doing?" Mira asked, seeing me turn back to the primary pump.

"The saboteur left a backdoor," I said. "If the Central Hub is compromised, I can’t fight the lock from the inside. But the water... the water goes everywhere."

I knelt by the intake valve. If the runes were a fuse, the water was the wire. I reached into my kit and pulled out a small copper coil, attaching it to the Centurion’s primary output lead.

"I’m going to pulse a Reverse-Resonance Signal back through the aqueduct," I explained. "I’ll use the water as a conductor. If I can hit the Central Hub’s sensors with the same frequency as these runes, I can ’trick’ the system into thinking the entire station has already exploded. It should trigger a fail-safe override and blow the locks."

"And if you’re wrong?" Gareth grunted, slamming a crowbar against the sealed door to no avail.

"Then the surge will hit the primary pump at the Hub and take out the city’s entire water supply," I said. "Either way, the doors will open. One way is just much louder than the other."

I placed my hand on the Centurion’s spine. "Ready, Vanguard? We’re going to scream into the pipes."

The construct gave a low, rumbling hum. I closed my eyes, visualizing the network of pipes stretching out from this room like a giant, iron nervous system. I didn’t call for a surge of power; I called for a Harmonic Spike.

Pulse.

The water in the intake pipe didn’t splash; it vibrated so hard it turned into a fine mist. The sound was a deafening, metallic shriek that traveled up the line, echoing through the stone walls of the station. I felt the signal race through the dark, through miles of granite arches and iron valves, heading straight for the heart of the city’s infrastructure.

For ten seconds, nothing happened. The air in the room grew thin and hot. Valerius was on his knees, gasping for breath, his teal robes soaked in sweat.

Then, the world tilted.

A massive clack-boom resonated through the stone. The lead-lined doors at the top of the stairs buckled outward, the mana-locks shattering under the force of the system-wide override. The ventilation shafts groaned and hissed as they were forced open, a rush of cold, fresh air flooding back into the station.

"Go!" I shouted.

We scrambled up the stairs, the Hydro-Mages stumbling in their haste to escape. I stayed behind for a second, watching the Centurion haul itself up the limestone steps, its iron feet clanking heavily.

We burst out into the docking bay, only to find it crawling with Royal Inquisitors in gray cloaks—not the scouts we had arrived with. At their head stood Lady Vesper, her brass-bound ledger tucked under her arm, her expression unreadable.

"Mr. Valcrey," she said, her voice cutting through the chaos. "I am informed there was a ’catastrophic malfunction’ in the Deep-Vein."

"There was an attempt," I said, wiping a smear of grease from my jaw. I walked straight up to her and held out the magnifying lens. "Tell your Inquisitors to look at the intake valves. And tell the King that his ’Hydro-Mages’ are either incompetent or they’ve been replaced by ghosts."

Vesper took the lens, her eyes flickering to the panicked Valerius being led away. She looked at the Centurion, then back at me. "The Central Hub reports a massive feedback surge. It nearly took down the Palace reservoirs."

"It opened the door," I said. "The math was a bit aggressive, but the results are within parameters."

Vesper leaned in, her voice a low whisper that only I could hear. "The men who welded those runes do not work for the Foundation, Armand. They are called The Rust-Walkers. They believe that magic should return to the earth, and they are willing to drown this city to prove it."

I looked at the Great Aqueduct, looming over us in the moonlight. It wasn’t just a machine anymore. It was a battlefield.

"Then I guess it’s a good thing you hired a mechanic," I said. "Because I’m very good at taking things apart. Especially when they’re programmed to break."