The heavy, rhythmic thumping from the depths of Floor Five was no longer just a sound; it was a physical tremor that traveled up through the soles of their boots.
*Thump. Thump. Thump.*
It was getting faster.
Wick stood frozen in the center of the cavern, his eyes wide and unseeing, staring into the approaching dark. His face was the color of ash. His lips moved, forming soundless words that eventually found a breath.
"We are going to die," he whispered. "We are going to die. We are going to die."
"Wick!" Maren snapped, grabbing his shoulder and shaking him hard. "Stay with me!"
But the terror was deep. It was the terror of a man remembering the floor that took his arm, now standing on a floor that was about to take everything else.
Sable was back to back with Cas, her batons drawn, her eyes darting across the darkness. "Maren, the gate is sealed tight. No amount of scratching is getting us through that stone. We need a bottleneck. A tunnel. Somewhere they can't flank us."
"There are no tunnels!" Cas shouted, his voice cracking. "It's an open hall! We're rats in a bucket!"
Fen raised his staff, his face slick with sweat. The dense mana in the air was making his spell matrices unstable, sparking and hissing. "I see them!" he screamed. "Three hundred meters! Closing fast!"
The darkness shifted.
It wasn't just one large thing. It was a tide.
Dozens of hulking shapes, low to the ground but moving with terrifying speed. **Crag Wolves.** Grade B beasts. Pack hunters known for their steel-hard hides and jaws that could crush rock. In a dense mana environment like Floor Five, they would be frenzied, their aggression amplified to the point of madness.
And behind them, outlined in the shadows, something massive strode. The source of the thumping. An **Ironback Behemoth**. Grade A.
"Formations won't hold that!" Sable yelled. "We have to run!"
"Where?!" Maren cried, looking frantically around the cathedral-like space. There were no doors, no side passages. Just the smooth, seamless walls of the ancient ruin.
The pack howled—a sound like metal scraping against metal—and the distance closed from three hundred meters to two hundred in a heartbeat.
Haruki stood apart from the panic.
His mind was quiet. Without Sol and Rax, there was no tactical overlay, no percentage chance of survival. There was only him, the crystal sword in his hand, and the environment.
He looked at the party. They were looking at the gate, at the monsters, at the ceiling. They were looking everywhere but down.
He looked down.
His left hand throbbed. The crystal sword—hastily crafted from the raw dungeon glass—was humming. It wasn't just the mana density. It was reacting to something.
Haruki looked at the wall. The section he had mined the crystal from.
He had pulled that stone from a deep vein. And now, the empty socket in the wall where the gem had been was pulsing. A faint, blue-white light was bleeding out of the rock fissure, brighter than the ambient glow of the cavern.
*Flashback.*
The night before the dungeon entry. Sitting on the floor of the guest room, the candle burning low.
*"Dungeons breathe, Haruki,"* Rax had said, his voice enthusiastic as he explained the ecology. *"They have veins and arteries. Mana flows like blood. But where there is life, there is also water."*
*"Gemstones in dungeons are parasitic,"* Sol had added. *"They grow in clusters where the mana is filtered by flowing water. The purer the water, the brighter the stone. If you see a vein glowing intensely without a stone in it, it means the water table is pushing up against the rock. It's under pressure."*
Haruki stared at the glowing fissure.
*Under pressure.*
The rock face was thick, but it was ancient. The dungeon was old. The stone was tired.
If there was water behind that wall—pressurized water—it meant a river. An underground current. A way out of this death trap.
He turned away from the gate. He turned his back on the sealed exit and the screaming horde.
"This way!" Haruki shouted.
His voice cut through the panic.
Maren spun around. "What? Haruki, that's a dead end! It's a solid wall!"
"There's water behind it," Haruki said, running toward the fissure. "I can see the pressure. The stone is saturated. If we break it, we break through."
"You're crazy!" Fen shrieked, lobbing a fireball that sputtered and died in the dense air. "We can't mine a tunnel in thirty seconds! We're going to be torn apart!"
"The gate is sealed!" Haruki yelled back, not stopping. "We can't open it! We have to make our own door!"
The horde was one hundred meters away. The ground shook. The Ironback Behemoth roared, a sound that vibrated in their teeth.
Cas looked at the wall, then at the monsters. He looked at Haruki, who was standing by the rock face, raising his mining pick.
"Open the wall or die on the floor," Cas gritted out. "Those are the choices?"
"Those are the choices," Haruki said.
Cas didn't argue. He turned to Maren. "Captain?"
Maren looked at the wall. She looked at the glowing fissure. It was a desperate, insane gamble. A theory based on a gemstone.
But looking into Haruki's eyes—calm, steady, terrifyingly focused—she felt a flicker of the same trust she had felt when he adjusted Wick's strap. He wasn't guessing. He *knew*.
"Everyone to the wall!" Maren commanded, her voice booming. "Haruki's plan! Move! Move!"
"Are you insane?!" Sable screamed, but she moved, because Maren moved.
They ran. Not toward the safety of a door, but toward the hard stone of the cavern wall.
They formed a line in front of the fissure. Cas raised his shield, bracing for impact. Maren and Fen readied their spells for a barrier, not an attack. Wick and Sable drew their weapons, their backs pressed against the cold rock.
The horde closed in. Fifty meters. Forty.
The lead Crag Wolves were foaming at the mouth, their eyes glowing with feral mana.
"Haruki!" Maren shouted, drawing her sword. "If there's water in there, get it open NOW!"
Haruki didn't answer. He didn't have time to explain that he had no system, no strength buff, no Sol to calculate the strike point.
He only had his grandmother's voice in his head.
*Pressure finds the path of least resistance, Haruki. Be the resistance.*
He raised the mining pick. He looked at the glowing fissure. He ignored the thundering death racing toward them.
He swung.
The pick struck the center of the glowing vein.
*CRACK.*
The sound wasn't like breaking stone. It was like breaking glass—a sharp, high-pitched snap that rang louder than the monster's roar.
For a second, nothing happened.
Then, a thin line of water shot out from the crack. Not a trickle. A high-pressure jet that sliced into the opposite wall.
The wall groaned.
"Get back!" Haruki yelled, diving to the side.
The rock face exploded outward.
A torrent of underground water—millions of gallons pressurized by centuries—burst from the wall like a breached dam. It was a roaring, white-water fury.
The first wave of the Crag Wolf pack, leaping toward them with claws extended, was caught mid-air by the blast. The water hit them with the force of a sledgehammer, smashing them backward, tossing the heavy beasts like leaves in a hurricane.
The party was knocked sideways by the spray, but they were saved. The water created a chaotic, impenetrable barrier between them and the horde, sweeping the monsters away in a churning foam of rock and fur.
But the breach was widening. The hole in the wall was growing.
"Inside!" Haruki coughed, spitting water. "Behind the wall! There's a cavity!"
Maren grabbed Wick and shoved him toward the hole. Cas grabbed Fen. They scrambled through the broken stone, fighting the incoming current, diving into the darkness behind the wall.
They tumbled into a dark, wet tunnel—smoother than the dungeon, man-made or perhaps ancient natural formation—just as the ceiling of the cavern began to collapse from the water erosion.
Behind them, the hole sealed itself with rubble and rushing water, cutting off the roar of the monsters.
They lay in the dark, soaked, bruised, shivering in the sudden cold.
Silence returned. The silence of a tomb.
Maren clicked her tongue, activating a light stone. The pale light illuminated their faces. They were all there. Alive.
She looked at Haruki, who was sitting against the wet wall, the crystal sword still clutched in his hand.
"The water," she whispered, her voice trembling. "You were right. The stone... you saw the water."
Haruki closed his eyes, his chest heaving.
"I remembered," he said softly.
He remembered a lesson from the night before. He remembered the grain of the stone. He remembered the weight of the pick.
He had done it without them.
And for the first time, he realized that he might not need to be a legendary hero. He just needed to be the person who noticed the cracks.
But as he sat there, in the dark, the red lines on his left hand pulsed. The SSS+ skill, dormant but hungry, throbbed in time with the rushing water.
They were safe for now. But they were deeper than they had ever been. And the dungeon was watching.
TO BE CONTINUED...