The morning in the Low-Grid didn't bring sunlight. It brought "The Hum"—the low-frequency vibration of the city above waking up, sending its industrial vibrations down through the stone like a headache that wouldn't end.
Marcus woke with a scream trapped in his throat. Every time he shifted, the broken ribs in his chest grated together like jagged glass. He was lying on a thin mat of woven synthetic fibers, his breath shallow.
Beside him, Kael was still asleep, his face bruised a deep, ugly purple where the Stone-Eater had struck him. Liora was huddled in a corner, staring at a small, glowing moss patch on the wall, her eyes distant.
The shame was worse than the physical pain.
He had promised to protect them, and instead, he had been saved by a scavenger with a crossbow.
"You're awake," a voice rasped.
Vane stood at the entrance of their small stone alcove. She wasn't carrying her crossbow today. Instead, she threw a heavy, wrapped object at Marcus's feet. It hit the ground with a metallic clunk.
"What is this?" Marcus wheezed, clutching his side.
"Reality," Vane said. "Unwrap it."
Marcus reached out, his fingers trembling. He pulled back the oil-stained cloth to reveal a short-sword. It wasn't a hero's blade; it was a "Scrap-Saber," forged from the leaf-spring of a heavy transport vehicle. It was heavy, poorly balanced, and the edge was notched, but it was solid.
"Your shadows are a luxury," Vane said, leaning against the cold basalt wall. "In the Low-Grid, mana is like water in a desert. If you spend it all on the first thing that growls at you, you'll be a husk by dinner. If you want to stay in The Echo, you learn to fight like a human. Pick it up."
Marcus looked at the blade. He had always relied on the "cool factor" of his summon. The idea of swinging a heavy piece of metal felt... primitive.
"She mocks you, 00560," the voice in his head whispered. "A sword is for cattle. Why swing steel when you can command the void?"
"Because the void won't come when I'm tired," Marcus thought back, gritting his teeth. "And I'm tired of being useless."
He gripped the hilt. The weight was immense. It pulled at his injured ribs, sending a fresh wave of agony through his torso. He forced himself to stand, his vision swimming.
"Good," Vane remarked, her eyes cold. "Kael stays here to help with the water-filters. He's got hands that know machines. You? You're coming with me to the 'Sump-Pipes.' We need to clear the silt-leeches, and I'm not wasting bolts on them. You use the steel, or you don't eat."
The Sump-Pipes were where the city's liquid waste slowed down enough to ferment. The air was thick with the smell of sulfur and ancient rot. The "Silt-Leeches" weren't monsters of legend; they were bloated, grey annelids the size of a man's thigh, with circular mouths full of vibrating teeth.
They didn't have magic. They just had hunger.
"One rule," Vane said, standing on a narrow catwalk above a pool of stagnant, glowing green sludge. "No shadows. If I see a single puff of black smoke, I'm kicking you into the vat. Use the blade."
Marcus stood on the slippery edge of the pipe, the heavy scrap-saber held in two hands. His ribs throbbed with every heartbeat.
A leech lunged from the sludge, its body a wet, muscular blur.
Marcus swung. It was a clumsy, desperate movement. The blade hit the leech's rubbery hide and bounced off. The force of the impact jarred Marcus's broken ribs so hard he fell to one knee, gasping for air. The leech landed on his shoulder, its teeth beginning to saw through his thin shirt.
"Marcus!" Kael's voice echoed in his mind, though his friend was miles away. The fear of failure flared—the fear that he would die in a sewer, leaving Liora alone.
He didn't call the shadows. He didn't have the strength. Instead, he dropped one hand from the hilt, grabbed the leech by its slimy midsection, and slammed his thumb into its soft eye-spot. The creature shrieked, a wet, gurgling sound.
Marcus shoved it off and brought the heavy blade down with a frantic, vertical chop.
The notched edge caught. It didn't cut clean; it tore. Thick, black ichor sprayed Marcus's face.
He didn't stop. He hacked at the creature again and again, his breath coming in sob-like gasps. He wasn't a "World-Devourer" right now. He was a butcher in a dark hole.
"Pace yourself," Vane's voice drifted down, completely unimpressed. "There's twelve more in this section."
By the end of the fourth hour, Marcus was covered in slime and his own blood. His hands were blistered, and his muscles felt like they had been replaced by lead. He had killed six leeches. His arms were shaking so badly he couldn't even lift the sword to a defensive position.
He slumped against the damp stone, his head hanging.
"Pathetic," the Shadow Creator hissed. "Subject 00560, reduced to a common laborer. Do you feel the weight of your mortality? Do you feel how easy it would be to just... let go?"
Marcus didn't answer the voice. He looked at his shadow, which was stretched thin by the dim green glow of the sludge.
"I feel... the limit," Marcus whispered internally.
Suddenly, he noticed something. Because he was so physically exhausted, his "Mana-Core"—the place where the gift lived—felt different. It was like a well that had been pumped dry, revealing the muddy floor beneath. In that state of total depletion, he could see the "Threads."
He realized that his shadows weren't just "things" he summoned. They were a part of his nervous system that he had been trying to use like a hammer.
He reached out a finger, not toward a leech, but toward the shadow of a rusted valve on the wall. He didn't try to "Summon" it. He tried to nudge it.
A tiny, microscopic sliver of darkness moved. It didn't take any mana. It took will.
He had been trying to build a castle before he knew how to move a brick.
When Marcus returned to the Echo commune that evening, he was unrecognizable. He was limping, caked in filth, and his eyes were sunken. But he was carrying a small sack of "Grid-Tuber" roots—the payment for the day's work.
He walked past the other outcasts, who looked at him with a mix of pity and growing respect. In the Low-Grid, everyone knew the "Newbie's Tax." Marcus had paid it in blood.
He reached their alcove and dropped the sack.
"Marcus!" Liora ran to him, her eyes filling with tears as she saw his state. "You're hurt. You're bleeding again."
"I'm fine, Li," he said, his voice a dry croak. He sat down, the scrap-saber clattering to the floor beside him. He looked at Kael. "Did you fix the filters?"
"Yeah," Kael said, his voice quiet. He looked at the sword, then at Marcus's raw, bleeding palms. "Marc, you don't have to do this. We can find another way. We can—"
"No," Marcus interrupted. He looked at the black veins on his arms. They hadn't grown, but they seemed more "set" into his skin, like a permanent tattoo.
"The golden boy was right about one thing. This world doesn't care about our feelings. It only cares about results. If I can't swing this sword when I'm dying, then I'll never be able to control the shadows when they truly wake up."
That night, Marcus didn't try to move pebbles. He lay on his back, staring at the ceiling, and practiced making his shadow "vibrate."
It was the first day of the grind. He was still Subject 00560. He was still weak. He was still a test subject.
But as he closed his eyes, he felt the shadow beneath him pulse—not with hunger, but with a strange, new kind of recognition. It was as if the "Gift" was finally realizing that the host was willing to suffer to master it.
Deep in the void, the Creator marked a new entry.
[Subject 00560: Physical Hardening Initiated.]
[Observation: Subject is developing 'Grit.' This was not predicted in the initial simulation of the 00500-series.]
[Action: Monitor the 'Metal Boy's' influence. If the bond strengthens Marcus's resolve further, consider 'Variable Elimination.']
Marcus fell into a dreamless sleep, his hand still curled as if gripping the hilt of a sword.