The descent into the chasm was not a fall; it was a transition into a world where the sun had never reached. Alex hit the floor of the cavern two hundred feet below with a sound like a falling anvil. His Bone Tempering Stage 5 legs acted as natural shock absorbers, his crystalline skeletal structure humming as it dispersed the kinetic energy into the bedrock.
He stood up, the darkness thick and suffocating. Above, the jagged hole he had created was a tiny, violet pinprick of light—the dying sparks of James White's failed storm.
Alex reached into his soul, not for mana, but for the "Inner Heat" of the Extreme Path. He felt the Dragon-Marrow Essence still circulating, its golden warmth acting as a biological lantern. His golden irises adjusted, turning the pitch-black void into a world of sharp, monochromatic edges.
This was the Underground Grave of Swords.
The cavern stretched for miles, the ceiling supported by gargantuan pillars of natural obsidian. But it wasn't the geology that caught his breath—it was the floor. Thousands upon thousands of weapons were thrust into the stone. Greatswords, polearms, broken daggers, and shattered shields formed a metallic forest that vanished into the gloom.
These weren't magic treasures. They were the discarded shells of the Extreme Martial Sect. When a warrior's body becomes the weapon, the steel in their hand becomes a burden.
The Echo of the Ancestors
As Alex walked through the sea of rust, the air began to vibrate. It wasn't a sound, but a rhythmic pressure against his eardrums.
"Who walks the path of the broken?"
The voice echoed from the walls, ancient and rasping. Alex stopped, his hand resting on the hilt of a shattered claymore. The moment his skin touched the cold iron, a vision flashed across his mind: a man standing against a tide of monsters, his sword snapping in half, yet his punch continuing through the creature's skull.
"I am Alex Silvester," he said, his voice echoing in the vast chamber. "I seek the end of the path."
"The path has no end," the voice replied. "Only milestones of blood and bone. You carry the scent of the Roy family's mercy and the Dragon's stolen fire. But do you carry the Heart?"
Suddenly, the rusted weapons began to rattle. From the shadows, a figure materialized. It wasn't a ghost, but a Martial Automaton—a construct of bronze and star-iron, its chest cavity glowing with a dim, flickering core. It held no weapon. Its metallic knuckles were scarred and pitted, reflecting the same "Fist of Law-Breaking" stance Alex had been practicing.
This was the guardian of the underground. A test left behind thirty centuries ago.
The Battle of the Void
The automaton moved without a sound. It blurred across the Grave of Swords, its heavy metallic feet ignoring the jagged blades beneath it.
Alex didn't dodge. He couldn't. The automaton's speed was a physical manifestation of the Seventh Realm's "Intent." Even with his Bone Tempering Stage 5, Alex felt as if he were trying to fight a hurricane.
CLANG!
The automaton's fist collided with Alex's crossed forearms. The force sent him skidding back thirty feet, his boots carving deep furrows into the cavern floor. His bones groaned, the crystalline lattice vibrating under the sheer tonnage of the strike.
"Too slow," Alex muttered, his eyes narrowing.
He realized he had been relying on his new strength as a shield. But the Extreme Path wasn't about being a wall; it was about being the hammer.
[ Fist of Law-Breaking: Fourth Insight — Flowing Iron ]
As the automaton lunged for a second strike, Alex didn't meet force with force. He twisted his body, his movements becoming fluid and serpentine. He allowed the automaton's fist to graze his shoulder, the friction searing his skin, and used that momentum to pivot.
He drove his elbow into the automaton's bronze ribs.
BONG—!
The cavern rang like a massive cathedral bell. The automaton staggered, its internal gears grinding. Alex didn't stop. He rained down a barrage of compact, lightning-fast strikes—punches that didn't just hit the surface but sent ripples of kinetic energy deep into the machine's core.
[System Notification: Combat Intent Leveling Up...]
[Skill Learned: Flowing Iron Defense]
The automaton let out a low, metallic hum. It stopped its attack and bowed its head. The glowing core in its chest pulsed three times before the light transferred to the floor at Alex's feet.
The Map of the Veins
The stone floor shifted. A hidden compartment slid open, revealing a stone tablet inscribed with a complex map of the human body—not the nervous system, but the Martial Meridian Map.
"The mana-users follow the veins of the world," the voice whispered. "But the Warrior follows the veins of the self. Temper the marrow, then temper the spirit. The Seventh Realm is not a wall, Alex Silvester. It is a doorway."
Alex looked at the tablet. It showed how to circulate the Dragon-Marrow Essence not just through the bones, but through the organs, turning the entire body into a "World-Cell" capable of generating its own power without relying on external mana.
He realized then why the Extreme Martial Sect had been exterminated. They weren't just warriors; they were a threat to the gods themselves. They were people who could live and fight without the "Gift" of the Rifts.
[New Quest: Internal Alchemy — Temper the Five Viscera]
[Target: Locate the 'Heart of the Mountain' in the Deep Underground]
Alex looked back up at the tiny pinprick of light. James White was up there, likely calling for reinforcements, claiming Alex was a monster. Sujata Roy was likely watching the political fallout, her amber eyes calculating the next move.
"Let them come," Alex said, his voice hardening into a promise.
He turned away from the light and began to walk deeper into the Grave of Swords, toward the true heart of Sector 7. Above ground, he was an E-rank student. Down here, he was the heir to a revolution.