The deeper Kai ventured into the "Bone-Yard," the more the atmosphere shifted. The air grew stagnant, smelling of wet concrete and something metallic—old blood.
Kai leaned against a rusted support beam, his chest heaving. His new Level 5 stats made him faster, yes, but his lungs still burned. His "Shadow Beetle" skittered alongside him, its ghostly form flickering. Maintaining the summon felt like a constant, low-grade fever burning in the back of his mind.
It's not free, Kai realized, wiping sweat from his jaw. The power is there, but my body is the bottleneck.
> [Warning: Stamina below 30%]
> [Mana Saturation: High]
He couldn't just "overpower" his way through. He had to be surgical.
He rounded a corner into the heart of the construction site—a massive, hollowed-out basement that was supposed to be a parking garage. In the center sat the Boss: The Iron-Hide Weaver.
It was a monstrosity of fused rebar and bloated spider-like flesh, nearly three meters tall. Its legs weren't just chitin; they were wrapped in jagged construction cables and rusted steel plates.
The Weaver didn't roar. It hissed, a sound like steam escaping a pipe, and fired a strand of "webbing"—thick, liquid steel cable—straight at Kai's throat.
"Move!" Kai barked.
The Shadow Beetle lunged forward, sacrificing its ephemeral body to intercept the cable. The impact sent the beetle flying, its form dissipating into black mist.
[Shadow Storage: 1/3 Slot Empty - Summon Forced Retraction]
The loss of the summon sent a jolt of mental fatigue through Kai. He didn't wait. He dived behind a concrete pillar just as a second cable pulverized the spot where he'd been standing.
I can't get close. Those cables will shred me before I can even reach for its legs.
Kai looked at the ceiling. Rusted chains hung from the unfinished rafters above the Weaver.
"Predator Instinct," he whispered.
The world bled into grey. He saw the Weaver's mana core—a pulsing violet knot in its abdomen—but he also saw the structural weaknesses of the room. The chains above were holding up a two-ton slab of unpoured concrete.
Kai bolted from cover.
The Weaver hissed, its multiple eyes tracking him. It launched three cables at once. Kai slid across the dusty floor, the metal whistling inches above his head. He felt the heat of the friction. He wasn't "overpowered"—he was dancing on a razor's edge.
He sprang up, grabbed a dangling rebar rod, and hurled it with his increased Strength.
CLANG.
The rod hit the Weaver's armored head, doing zero damage but drawing its ire. The beast lunged, its massive weight shaking the floor.
Now.
Kai didn't retreat. He ran at the monster. As the Weaver reared back to crush him with its front scythes, Kai threw his chipped dagger—not at the monster, but at the rusted winch holding the ceiling slab.
The dagger, infused with a spark of Abyss energy, sliced through the worn gears.
The slab groaned.
The Weaver realized the trap too late. It tried to scuttle backward, but Kai was already under its underbelly. He grabbed the thickest cable leg and pulled with every ounce of his 10+ Strength.
"Stay. Put."
The monster stumbled. In that split second, the concrete slab crashed down.
CRUNCH.
The basement erupted in a cloud of pulverized stone and dust. The Weaver was pinned, its rear half crushed, its violet core exposed and leaking mana.
Kai crawled out from the debris, his hoodie torn, his shoulder bleeding where a stray shard of stone had caught him. He stumbled toward the twitching monster. He was exhausted, his vision swimming, but the hunger in his chest was screaming.
He placed his hand on the Weaver's leaking core.
"Devour."
The black ink swirled, more violent than before. It didn't just take the mana; it tore the steel cables off the monster's body, pulling them into the vortex.
> [Boss Defeated]
> [Level Up: 5 → 7]
> [New Shadow Potential Detected: Iron-Hide Weaver]
> [Extraction Success Rate: 15%]
Kai fell to his knees as the energy flooded his system, repairing his torn muscles but leaving his mind drained. He reached into the dissipating corpse and pulled out a glowing, high-grade Mana Crystal—the five million won he needed for Minae.
He gripped the crystal tight, his knuckles white.
"One more step," he rasped, looking at his trembling hands. "Just a few more steps to A-Rank."
He stood up, alone in the dark, the "Disposable" hunter now carrying the weight of a King in his shadow.