The diagnostic didn't happen in my mind. It happened in my marrow.
As I lay beneath the dim canvas of the tent, the Earth Core—now seated deep within the Stone's central socket—sent a low, resonant vibration through my bones. It wasn't a mechanical alert. It was a note. A sustained, cello-deep hum that rattled my teeth and made the air in my lungs feel heavier.
The Stone had finished chewing. Raw chaos had gone in; what came out was structure. The Core's data signature was now locked into the Stone's architecture, while its physical properties—the dense, immovable nature of the earth—had been broadcast into my skeleton like a firmware update for my anatomy.
I closed my eyes and let the Library unfold. My vision split: one half rendered the sagging tent roof; the other mapped my body as a wireframe. My ribs and spine glowed with a muted amber sheen—carbon lattices threaded with mana.
Body Status: Earth-Lattice synchronized. Sync Status: Structural Ground established. Unlocked Sub-Function: The Compiler.
A quiet awe settled over me. Back on Earth, I was fascinated by the laws of the universe and searched them with theories and math, but I'd lacked the medium to truly touch them. An engineer can draw schematics forever, but without material, he is just a dreamer. Here, mana was the material.
I finally understood the division of my own mind: The Library was my storage and analysis—the photographic memory of every rune I'd ever seen. The Compiler was the execution engine, the part that actually translated those patterns into live, flowing mana-circuits.
I wasn't just casting spells anymore. I was building them.
But the system was running dangerously hot.
Even lying still, thought felt thick, like my ideas were moving through warm oil. In the Tower, ambient mana acted like a convective coolant, carrying heat away from a mage's body. Out here, the mana-vacuum was a perfect thermal insulator. Every joule of friction from the Compiler stayed trapped inside my Earth-reinforced bones.
"Drink. It's better while it's hot."
I opened my eyes. Akhtar stood over me, holding a steaming mug. His usual sharpness was gone, replaced by a weary, bloodshot gaze. He avoided looking at my chest, his fingers worrying the seam of his heavy cloak. He looked like a man trying to reconcile a holy duty with a mounting sense of horror.
I forced my posture to sag. The Earth Core wanted me straight; I made myself look weak.
"The Council sent word," he said quietly, his voice cracking. "The distortion in the portal lenses is accelerating. They've abandoned the precision launch. Originally, we had a week, but they've pushed the window to a hard ten days. They're going to dump the Tower's entire reserve battery into the gate to force it open."
"At the cost of my life," I said.
Akhtar's jaw tightened. "At the cost of one life, to save millions." He said it with the conviction of a man repeating a prayer he no longer believed. He stood and traced a pattern in the air—a messy, radiant knot of gold.
"Calidus-Lux," he murmured. "For warmth. And light."
The Stone flared. The Compiler came online, and my vision shifted into the Circuit Interface. I didn't see a miracle; I saw a tangled web of glowing runes, mana fighting itself at every junction.
Library Analysis: Calidus-Lux (Standard Macro) Efficiency: 14%. Energy Loss: 86% (Visual Noise/Acoustic Friction). Note: Optimized for spectacle, not function.
It was tragic. The Tower taught magic that looked like miracles, burning most of their power just to prove they could.
"Thank you," I said. Akhtar nodded, his eyes downcast, and stepped out into the night to guard his dying hero.
I reached for the mug. "I don't need light," I whispered. "Just heat."
The Library flashed a red warning: Capacity restricted to 10% due to thermal load. I ignored it, manually throttling the Compiler to 30%. The Stone protested immediately, the Library's analysis threads flickering as I prioritized the execution logic.
I stripped Akhtar's spell down to its core: the induction runes that vibrated air molecules. I was fascinated; at the Tower library, these were just "patterns to be followed." With the Compiler, I could see the actual pathways, the way each rune acted as a resistor or an amplifier.
I removed the Lux components and the stability loops meant for fragile human concentration. I grounded the circuit through my right arm, using the reinforced bone as a physical bus.
A lean circuit. No waste. No prayer.
I ran it.
The mug didn't glow. There was no sound. But within seconds, steam curled from the surface, the ceramic trembling faintly in my grip as the molecules were agitated with 98% efficiency.
For half a heartbeat, I felt it—the intoxicating certainty of absolute control.
Then the friction hit.
Pain slammed into my chest. It wasn't sharp; it was everywhere. My ribs felt white-hot, and a metallic ringing filled my ears.
CRITICAL WARNING: Internal Thermal Load: 92%. Diagnosis: Waste heat cannot dissipate in mana-vacuum.
I cut the circuit and collapsed back, gasping as sweat cooled against my skin. I had nine days to solve this, or the "Brute Force" launch would cook my brain before I even reached the portal.
The answer was North.
In Tower taxonomy, the Frost Stalker's core was "Water-Aspect." To me, it was a Cryo-Stabilized Heat Sink. A radiator.
I stood, forcing the stiffness from my limbs, and limped toward the supervisor's station. He was busy skimming resonance salts, his greed a far more reliable variable than Akhtar's guilt.
"I need a solo pass," I said, sliding a pouch of Prime Blue salts onto his ledger. "Northern perimeter. I want to see the frost-line before the launch."
His eyes gleamed. He didn't care about my soul; he cared about the blue glow of the bribe. "The North eats people," he muttered, pocketing the salt. "This token buys you daylight, not safety."
"That's all I need."
I turned toward the horizon. The north was a jagged wall of white, cold enough to steal breath and memory.
"Time to build the radiator," I whispered—and stepped into the dark.