The Last Catalyst : My 100th Regression

The Hidden Underground

The transition from the lower residential blocks to the forgotten underbelly of Sector 4 felt like sinking into a frozen tomb.

Harrison moved through the utility access tunnels with silent, predatory precision. Up above, the city was a machine of light and noise, but down here, the only sounds were the rhythmic, metallic *drip-drop* of condensation and the distant, low-frequency thrum of Sector 4's primary structural stabilizers.

[Spatial Awareness - Rank F: Active.]

The multi-dimensional map in Harrison's mind expanded outward, cutting through the thick darkness. Every five meters of his surroundings were laid bare. He could feel the cold, moist air currents dragging against the rusty iron pipes, the slight vibration of structural stress in the ceiling overhead, and the absolute stillness of the long-abandoned corridor ahead of him.

His baseline physical attributes were still a limitation. His strength of twelve meant the heavy steel bar he carried felt dense and slow in his grip, and his stamina would give out quickly if he entered a prolonged, brute-force brawl. But with his new spatial sense, he didn't need to outrun his opponents he just had to ensure he was never where their strikes landed.

As he neared the edge of the industrial sector's drainage hub, the steady golden pulse of his interface suddenly spiked, bleeding a series of harsh, crimson notifications directly onto his retinas.

> **[ ⚠️ CRITICAL PROMPT: TARGET ENEMY PROXIMITY ]**

> * **Location:** Sector 4 Sub-Level 3 — Main Distribution Vault.

> * **Objective:** Recover or destroy the unauthorized Micro-Rift Catalyst.

> * **Time Remaining:** 00:00:42 *(Ticking...)*

> * **Threat Level:** Moderate (F-Rank Core Users detected).

> 

Harrison stopped, pressing his back against the wet concrete wall. He closed his eyes, tuning out the visual interface to let his **[Spatial Awareness]** flood his mind.

Through the thick, reinforced steel door at the end of the corridor, he could feel the kinetic signatures of three distinct entities. Two of them were moving with the heavy, rhythmic cadence of hired mercenaries guards patrolling the perimeter of the vault, their weights shifting predictably from heel to toe. The third signature was completely different. It was frantic, sporadic, and centered around a large metal desk in the middle of the room.

Harrison opened his eyes. He recognized that frantic signature.

In his 95th life, during the post-disaster investigation of the Sector 4 collapse, one name had been repeatedly flagged before the central command buried the files: **Supervisor Malek**. A low-level bureaucrat who managed the sub-level utility grids, a man whose gambling debts had magically vanished right before the lower rings were swallowed by monsters.

Malek was the corrupt official. He was the one currently cleaning the blood off his hands.

Harrison slipped around the corner, his boots making absolutely no sound on the damp metal grating. He reached the heavy vault door. Thanks to decades of technical analysis across his past loops, Harrison knew that these sub-level security overrides used a standardized mechanical backup system. He didn't need a high-tech hacking terminal.

He jammed the tip of his steel bar directly into the exposed hydraulic release valve near the door's hinge and threw his weight against it.

*PSSSHHHH*

The pneumatic seal blew, and the heavy door hissed open, sliding into the wall with a loud, mechanical groan.

"Who's there?!" a gruff voice shouted instantly.

Harrison didn't waste a breath. The moment the gap in the door widened, his spatial senses mapped the room in absolute clarity. The guard on the left was already raising a low-grade, standard-issue aether pistol, the weapon's internal core whining as it gathered energy.

Harrison stepped forward, but he didn't run at the guard. He tilted his torso exactly three inches to the right.

A brilliant bolt of compressed blue aether sailed through the open doorway, scorching the air precisely where Harrison's left shoulder had been a millisecond prior. The bolt struck the concrete corridor behind him, exploding into a shower of harmless white sparks.

Before the mercenary could chamber a second round, Harrison closed the distance. He swung the steel bar upward in a tight, efficient arc, utilizing the momentum of his step.

*CRACK.*

The iron rod caught the guard dead under the jaw. The force of the impact lifted the man off his feet, his helmet flying loose as he crumpled instantly onto the metal floor, completely unconscious.

"Intruder! Eliminate him!" the second guard screamed, drawing a short, vibrating vibro-blade from his tactical belt.

The remaining mercenary lunged forward, executing a standard military-grade piercing strike aimed directly at Harrison's chest. It was a fast, lethal maneuver, but to a man who had analyzed the attack patterns of S-Rank vanguards and apocalyptic beasts, the mercenary's movements looked like they were unfolding underwater.

Harrison didn't parry. He simply stepped inside the guard's guard, his left hand locking around the man's wrist, redirecting the momentum of the vibro-blade into the empty air beside him. At the same time, Harrison drove the heel of his boot directly into the mercenary's exposed knee joint.

*SNAP.*

The guard let out a guttural scream as his leg buckled beneath him. Harrison followed through instantly, bringing the butt of the steel bar down onto the back of the mercenary's neck. The man went limp, joining his partner on the floor.

The entire confrontation had taken less than seven seconds.

[ +50 Experience Points Gained. ]

[ Current Class Progression: 550 / 1000 CP. ]

Harrison ignored the small blue text flickering in the corner of his eye. He raised his head, his cold, unyielding gaze locking onto the far end of the vault.

Supervisor Malek was backing away against the primary control console, his face slick with sweat, his expensive silk tie disheveled. In his trembling hands, he wasn't holding a weapon. He was clutching a dark, jagged crystalline artifact roughly the size of a human skull.

The crystal was beautiful, but terrifying. It throbbed with a volatile, deep purple luminescence that perfectly mirrored the sickening aura of the *Shadow Stalker* Harrison had fought in the courtyard. The ambient air around the crystal was actively warping, freezing into tiny, geometric frost patterns before dissolving back into vapor.

The Micro-Rift Catalyst.

"Stay back!" Malek shrieked, his voice cracking with pure, unadulterated panic. He looked at the two unconscious, heavily armored mercenaries on the floor, then at Harrison a teenager in a dark hoodie holding a blood-stained iron rod. "I don't know who you are, or which faction sent you, but it's too late! You can't stop this!"

"Put the crystal down, Malek," Harrison said, his voice dropping into a low, terrifyingly calm register as he slowly advanced across the room. The steel bar dragged against the metal floor, creating a slow, rhythmic *screeech* that echoed off the vault walls. "If you drop that catalyst, the Level 2 breach will vaporize this entire sub-level, and you won't live long enough to spend whatever Central currency they promised you."

Malek’s eyes widened to frantic circles. "How do you... how do you know about the currency? How do you know my name?!"

"I know that ninety-nine times out of a hundred, men like you sell out humanity for a pile of worthless paper," Harrison said, stopping five paces away. He raised the iron bar, pointing the jagged, slick tip directly at Malek’s throat. "Give me the crystal, and I might let you survive the night."

Malek looked at the rod, then at the pulsing, volatile artifact in his hands. A desperate, fanatical look took over his wet features. The panic turned into the hollow bravado of a trapped animal.

"No... no, you don't understand!" Malek laughed hysterically, his fingers tightening around the jagged edges of the crystalline artifact, drawing small beads of dark blood from his palms as the sharp edges cut his skin. "If I fail to deliver the purge sequence, *They* will hunt me to the ends of Nova City! There is no survival for me if this evidence remains intact! If I'm going down... I'm taking Sector 4 with me!"

"Malek, don't"

Before Harrison could bridge the gap, Malek let out a guttural scream and slammed the dark, glowing crystal violently onto the metal grating beneath his feet.

*CHRRRRR-RUMBLE!*

The crystal didn't shatter into pieces. Instead, it dissolved instantly into a liquid pool of absolute blackness that poured through the floor grating, sinking deep into the primary industrial aether conduits of the sub-level.

For a fraction of a second, the vault was dead silent.

Then, the world turned upside down.

A deep, violent tremor shook the foundations of the vault, so intense it threw Malek off his feet, his head cracking against the iron console as he fell unconscious into the corner. Harrison staggered, his **[Spatial Awareness]** instantly screaming in pure agony as the entire kinetic and aetheric matrix of the room violently distorted.

The blue safety lights of the vault flickered and died, plunged into pitch blackness before being replaced by the spinning, ominous glare of the automated red emergency beacons.

*WHAOOO WHAOOO WHAOOO*

The mechanical sirens wailed, but they were quickly drowned out by a sound that Harrison knew all too well. It was the sound of fabric tearing. The sound of reality being split open from the inside out.

Directly in the center of the room, the liquid blackness from the crystal erupted backward, forming a massive, swirling spatial vortex that began to violently pull the air, the loose metal sheets, and the debris into its core. The structural integrity of the vault was failing in real-time.

Harrison braced his feet against the floor, his fingers digging into a reinforced support pillar as the gravitational pull of the vortex tried to drag him into the abyss.

Suddenly, the golden interface of his system exploded across his vision, the text flashing in blinding, desperate shades of crimson and gold, overriding everything else.

> **[ 🚨 CRITICAL ALERT: SYSTEM EMERGENCY ]**

> **Event:** Micro-Rift Catalyst Purge — Initiated.

> * **Current Status:** Forced Dungeon Sync Anomalous Sequence Triggered.

> * **Sector 4 Sub-Level 3:** Transitioning into an Active Zone Box.

> * **Escape Route:** 0% (Locked)

> **[ SYSTEM PROMPT ]**

> * Warning: The surrounding dimensional fabric has locked. Escaping the sub-level is physically impossible until the Zone Overlord is eliminated.

> * **Time Remaining Until Total Sector Collapse:** 23:59:59

> 

From the depths of the swirling vortex, a massive, multi-jointed shadow began to rise an entity far larger, far older, and infinitely more terrifying than the *Shadow Stalker* from the mall courtyard.

Harrison gripped the steel bar tightly, his knuckles turning pure white as the freezing, toxic wind of the rift whipped his clothes. He looked up at the massive regional countdown timer floating above the horizon of his system, then at the nightmare currently crawling out of the floor.

The safety net was gone. The loop was final. And the real grind had just begun.