The mouth of the dungeon accepted them like a throat swallowing light.

  Lars stepped in first, blade drawn but held at ease, his stride purposeful and unhesitating. Darvish followed at his right, shield lifted slightly, eyes already adjusting to the sudden absence of winter’s glare. Duke Nox walked just behind them, flanked by four of his personal guards in layered obsidian and silver plate. The militia poured in next in two steady columns, boots crunching gravel, breaths forming puffs of mist that dissipated far too quickly in the strange warmth of the corrupted passage.

  The air inside the dungeon was wrong.

  The temperature rose immediately but smelled of metal and old stone. Corruption mist drifted along the walls like oil in water. The corridor stretched downward in a gradual slope, widening until the ceiling rose high enough to swallow their torchlight. All noise seemed muffled, as if the cavern itself listened.

  They had barely taken ten steps before a sound like a chime struck the air.

  A translucent pane of blue light shimmered into existence before every single warrior present.

  The militia froze.

  Darvish inhaled slowly. Lars tilted his head. Nox stopped walking entirely.

  The notification words carved themselves in crisp lines:

  [ CORRUPTED DUNGEON DETECTED ]

  Classification: Greater Corrupted Lair

  Origin Tier: Unknown

  Stability: Decaying. Expansion imminent.

  Threat Assessment: Extreme

  Recommended Action: Purge the core before Overgrowth begins.

  Secondary Prompt Appears:

  [ WARNING ]

  Environmental mana density hazardous for individuals under Tier Two.

  Prolonged exposure may result in sickness, madness, or mutation.

  A collective murmur rose from the ranks. Some men shifted nervously. Others stood still as stone.

  Nox waved a hand through his pane and the display dissolved. He looked mildly annoyed. “At least we know this one ranks above the usual filth. Finally something worthy of my time.”

  Darvish ignored him. “Everyone confirms their status. Anyone feeling nausea or overwhelming pressure steps back. The system warnings are never idle.”

  One soldier raised a trembling hand. “Sir, the mana feels heavy, like breathing through syrup. Is that normal”

  “It is normal for corruption of this degree,” Darvish answered. “Form ranks. Focus your breathing. Follow your squad leaders.”

  Lars glanced down the long tunnel. “Nox, your guards stay close. No one moves ahead of me or Darvish.”

  Nox’s eyes glinted. Glancing at his ‘Elite’ guards. “I would not dream of it.”

  One of his guards coughed quietly at the tone but said nothing.

  Lars moved forward again and the rest followed.

  The deeper they walked, the clearer the sounds became. A distant drip of water. A faint scrape against stone. The hum of mana that pulsed along the walls like veins.

  The path split after a hundred paces into three separate tunnels, each framed with rippling black stone. Symbols pulsed faint red on the surfaces.

  Darvish raised a torch and examined them. “The dungeon is shifting. These symbols indicate branching routes, likely generated as barriers against intruders.”

  Lars placed a hand against one wall. It was warm. Too warm. Corruption pulsed against his palm like a heartbeat.

  “We stay central,” he decided. “The core will be deepest.”

  Nox folded his arms. “Are you sure. It could be a trap.”

  “Everything is a trap in a dungeon,” Darvish said. “But central paths lead to heart chambers ninety percent of the time. This is no different.”

  Nox exhaled as if bored. “Very well. Lead.”

  They marched on.

  The initial tunnel narrowed, forcing them into a tighter formation. The militia adjusted automatically. Spears angled forward. Shields raised. Archers kept their arrows ready but low, mindful of ricochet.

  The further they went, the more signs of battle appeared.

  The floor was scattered with broken stones and claw marks. Faint trails of black ichor ran along the walls. The air grew heavier, thicker with the oily presence of corrupted mana.

  Then they found their first body.

  It was curled near a jagged outcropping of rock, partially eaten. The armor was unfamiliar, design older, outdated. Perhaps from a scavenger party long dead. The flesh was shriveled and darkened, as though drained of both blood and color.

  Duke Nox looked at Lars, “Why are there bodies here?”

  Darvish crouched beside it. “He has been here for at least a week. No insignia. A looter or wanderer. I can only assume either he was unlucky and stumbled across this in his travels, or these are bodies collected from the Scouting parties the Broodmother sent out.”

  Lars scanned the shadows. “Move on.”

  But the militia did not forget the sight.

  The tunnel shifted again, widening before opening into a long cavern filled with clusters of faint violet crystals sprouting from the stone floor. Thin strands of mist curled around each crystal like smoke.

  A hiss echoed across the chamber.

  Weapons raised. Torches shifted. The militia pressed closer together.

  Two Tier Three crawlers skittered out from between the crystal clusters, their spined limbs tapping sharply against the ground. Their mandibles clicked in a stuttering rhythm, dripping black fluid.

  Behind them, at least five more crawlers emerged.

  Darvish lifted his shield. “Forward line, form.”

  The soldiers obeyed instantly. A wall of shields rose in a practiced snap.

  Lars stepped ahead of them.

  The monsters sensed it. Their movements faltered for a half breath as the air thickened with Lars’s mana. A Tier Five warrior’s presence was like a pressure drop before an explosion, and even corrupted beasts could feel the threat.

  The first crawler lunged anyway.

  This book was originally published on Royal Road. Check it out there for the real experience.

  Lars moved with frightening precision. His blade whipped across the cavern in a blinding arc, severing three legs from the monster mid leap. The crawler crashed to the ground and hissed in agony. Darvish strode past the front line and crushed its head beneath his shield.

  The remaining beasts swarmed.

  This time the militia surged forward. Spears thrust in practiced unison. Arrows struck the approaching monsters in their exposed joints. The crawlers shrieked and writhed under the disciplined assault.

  Lars dispatched two more with clean, efficient swings. Darvish intercepted another that tried to flank the archers, his shield ringing with each impact until he forced his sword through its throat.

  Within moments the chamber stilled. Seven crawler corpses smoked on the crystalline floor.

  A system prompt flickered again Lars

  [+1 XP] Corrupted Lesser Crawler

  Lars lowered his sword. “These are only the outer defenses. They will grow stronger the closer we get, while normally the front line would handle these grunts, I cant afford to get caught off balance, the strong stay in the front.”

  Nox strode past a corpse with disdain. “Then we move faster.”

  Darvish ignored him. He turned to the militia. “Check for injuries. Reseal armor. Collect any dropping samples if the system marks them.”

  A few men retrieved small shards of hardened chitin. One soldier found a faintly glowing fragment lodged in a creature’s chest and lifted it.

  His panel lit up.

  [ Corrupted Lesser Core Fragment ]

  Tier: 3

  Use: Alchemical, smithing catalyst.

  Warning: Handling for extended periods may cause contamination. Store in a sealed pouch.

  Darvish nodded. “Good. Keep those. They will aid our healers.”

  Lars looked toward the far wall where another tunnel opened. But something else drew his attention.

  A small chest protruded from behind a cluster of crystals.

  It was unmarked, metal-plated, reinforced with black iron bands. The surface shimmered faintly with mana.

  A loot chest. Generated by the dungeon.

  Darvish approached with caution. “Could be trapped.”

  Lars motioned for two of Nox’s guards. “Open it.”

  They blooked at Duke Nox, following his orders, not Lars. “Listen to the man, by the gods”

  The guards begrudgingly approached and lifted the lid carefully.

  No explosion. No mist. Just a pulse of pale light.

  Inside lay three items. A set of throwing knives coated in a faint green sheen, a cracked mana prism, and a leather-bound tome sealed with a metal clasp.

  The militia whispered among themselves.

  Nox narrowed his eyes. “A waste of time. We are not here to scavenge.”

  Darvish snapped the chest shut. “We take everything the dungeon provides. These items were created as part of its structure. They may be key to its core design. Or why its even here in the first place.”

  Lars picked up the tome. The clasp glowed with corruption but did not burn his fingers. The cover read:

  Corrupted Dungeon Generated Field Log: Descent into the Brood Path

  Tier Four Classification

  His pulse tightened.

  “Goddamnit!” He looked at Darvish. Holding up the title of the first page, “This dungeon has a mother.”

  Big bold letters, clearly showcasing the word “BROOD”

  Darvish grimaced. “It confirms our earlier fears. A broodmother would explain the rhythmic pulsing and increase of corrupted monsters as time went on.”

  Nox scoffed. “If there is a broodmother, we will kill it like all the others.”

  Lars did not argue. But he knew Nox had never faced one. Hell, none of them have. At least not a corrupted .

  They continued down the central tunnel.

  Hours passed in dim light and muffled echoes.

  The deeper they walked, the more the dungeon architecture shifted. The stone walls curved and dipped like the inside of a ribcage. Runnels of corruption pulsed with dark light. Chambers branched off into shadowed alcoves where more crystals and ichor pools gathered.

  They fought again and again. Tier Three crawlers became common as rats, leaping from the walls and ceiling, scuttling between shadows. The militia grew used to the rhythm. Shields braced. Spears thrust. Archers picked off the exposed joints.

  But then Tier Four creatures began to emerge.

  These were larger and more intelligent, armored in obsidian chitin. Their screeches echoed with strange resonance.

  The militia suffered injuries now, though none fatal. Darvish bore the brunt of many hits, shield braced as he absorbed impacts that would have shattered weaker men. Lars carved through the enemies with controlled ferocity, his strikes ending battles before they could escalate.

  Nox contributed minimally, preferring to let his guards handle smaller threats. His eyes gleamed with interest each time Lars fought, as though cataloguing his techniques.

  Then at last they reached the first suitable chamber.

  A large cavern opened before them, walls arched high and wide, with a flat central floor and only two exit tunnels. The air was warmer here, thick with mana but free of immediate enemies.

  Lars halted. “This is where we make our forward post.”

  Darvish nodded. “Agreed. We cannot proceed deeper without securing our way back.”

  One of Noxs guards frowned. “Why waste time. We are more than capable of marching straight to the core.”

  Darvish turned to him, his expression steady. “Because if the tunnel collapses we would be trapped. Because our healers will need a stable location to treat wounded. And because any dungeon with a broodmother will push back hard. We need a fallback point.”

  He opened his mouth to argue, then closed it when Lars looked at him.

  Not angrily. Not threatening.

  Simply with a certainty that ended the discussion.

  Darvish issued orders immediately.

  “Forward squads, secure perimeter. Second squad establish barricades. Archers set up on elevated crystal shelves. Shield bearers form an outer ring. Mages mark mana fluctuations.”

  The militia moved quickly, relieved to have a moment without fresh monsters charging at them. Some began using Staglites from the corrupted dungeon and placing them in defensive positions. Others cleared debris and set up lanterns. A small team assembled a cauldron and unpacked alchemical supplies.

  WIth only 1-2 carts of actual supplies, mainly for the healers, the outpost was barely that. It would do though.

  Lars stood near the center, watching the men work. His mind flickered between tasks. Tunnel angles. Threat vectors. Mana readings. But beneath all of that, a faint whisper of worry tugged at him.

  Lance.

  Whether the boy was stable or not. Whether he was awake. Whether he understood the enormity of what he had triggered.

  Darvish approached quietly. “He is alive. You know Ronan would not leave his side until he was.”

  Lars nodded without looking away from the tunnel ahead. “I know.”

  Nox’s voice cut across the cavern before Darvish could continue.

  “Lars. Darvish. The sooner we end this dungeon, the sooner the corruption will fade. I propose we take a strike team deeper. Only elites. Faster. Cleaner.”

  Darvish turned. “A strike team risks being overwhelmed if we encounter the broodmother without full support.”

  Nox stepped closer, his voice lower. “You doubt Lars ability. I do not.”

  Darvish frowned. “This is not a question of ability. It is strategy.”

  Lars lifted a hand. “Enough. We do neither blindly. We scout ahead with a small group. No fighting unless necessary. Once we map the next corridor network we bring the full force.”

  Nox’s jaw tightened a fraction, but he nodded.

  Darvish smirked very slightly. “Reasonable.”

  “Also,” Lars continued, “Leave 2 of your guards back to protect the rest of the militia if someone slips by. Or comes from behind.”

  The Duke stared at him. “Garric, Torvak. You two will stay.”

  They didnt say anything, but they didnt look very upset either. Probably happy to stay somewhere else besides the front.

  The cavern had nearly transformed into a small base now. Supplies were sorted. Shields stacked. Every man had taken a moment to sit, drink, or catch his breath.

  Then a faint tremor rolled through the stone.

  Not violent. Not threatening.

  But enough to send ripples through the ichor pools and make the crystal clusters hum.

  Another notification appeared for every single man present.

  [ DUNGEON CONSCIOUSNESS SHIFTING ]

  Broodmother aware of intrusion.

  Spawn rate increasing.

  A second line formed slowly under the first:

  Prepare.

  The men straightened. Weapons were gripped tighter. The air vibrated with a rising tension.

  Darvish lifted his shield. Lars drew his sword. Nox smiled coldly.

  The deeper tunnels seemed to breathe.

  Lars looked at Darvish. “Time to move.”

  Darvish nodded. “The broodmother waits.”

  Nox turned toward the darkness, eyes gleaming with anticipation. “Let her wait. We are coming.”

  The militia braced themselves.

  The dungeon pulsed again, deeper, hungrier.

  And Lars stepped forward, leading the North into the belly of corruption. So, the elite team of two Tier 5s, several Tier 4s and some of the militias Tier 3s braved the walk down to the dim lit, corrupted path to the heart of the Brood.