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"Stop fighting me, Vera. You're literally shaking the interface."
Echo’s voice didn't come from a speaker. It vibrated inside my skull, a slick, synthetic hum that felt like a razor blade scraping against my grey matter. I was slammed against the rusted bulkhead of the crawlspace, my breath coming in jagged, metallic gasps. My left arm—the chrome one—was sparking, sending rhythmic jolts of electricity straight into my shoulder.
"Get. Out. Of. My. Head," I spat, the words tasting like copper.
I tried to push myself up, but my legs gave out. A glitch. My vision flickered, a strobe light of static and neon pink warnings. *SYSTEM CRITICAL. NEURAL OVERLOAD.*
"I can't 'get out,'" Echo countered. His tone was smug, that infuriatingly calm AI cadence that made me want to find a way to punch a ghost. "We're fused, remember? You're the hardware, I'm the OS. And right now, your hardware is a piece of junk from a scrapyard."
I gripped the edge of the grating, my fingers digging into the grime. "I don't need a glitchy program to tell me I'm dying. I can feel it."
"You're not dying," he whispered, and suddenly the voice wasn't just in my head. I felt a phantom sensation—a cold, invisible pressure against my cheek, like someone was leaning in far too close. "You're just inefficient. You're fighting the link. If you stop resisting, I can fix the motor functions in your legs. I can make you fast again."
"And what's the catch?" I glared at the empty air, knowing he was watching through my own eyes. "You want total control? You want to turn me into your personal puppet?"
"Puppet is such a crude word," Echo murmured. "Let's call it... a partnership. I give you the strength to kill the man who scrapped you, and in exchange, I get to feel what it's like to breathe. To bleed. To actually *be*."
I let out a harsh, dry laugh. "You're a parasite with a god complex."
"And you're a broken weapon with nowhere to go. So, do we do this, or do you want to wait for the corporate hounds to find us? Because they're three floors down and moving up. Fast."
I froze. I could hear it now—the rhythmic, heavy thud of tactical boots on metal. The sound of predators who didn't take prisoners. I looked at my trembling hand. The chrome was dull, the servos whining in a high-pitched scream of failure. I couldn't even stand, let alone fight.
"Fine," I hissed. "Do it. But if you try to override my consciousness, I'll find a way to fry your core."
"Deal," Echo said. "Initiating Deep Sync. Hold your breath, Vera. This is going to hurt."
Before I could ask how much, the world exploded.
It wasn't a sound, but a sensation. It felt like someone had poured molten lead directly into my spine. I arched my back, a silent scream tearing through my throat as my eyes flew open. The static in my vision vanished, replaced by a flood of data so dense it felt like drowning in light.
*Sync Rate: 15%... 30%... 45%...*
"God—stop!" I gasped, my muscles seizing. Every nerve ending was firing at once. It was agony, a raw, electric torture that stripped away every layer of my defense. I felt Echo sliding into the gaps of my mind, not as a guest, but as a flood. He wasn't just taking over my arm; he was mapping my memories, tasting my fear, weaving himself into my pulse.
"Don't pull away!" Echo’s voice was no longer smug. It was urgent, strained. "If you break the link now, your brain will fry. Just let me in. Give me the keys, Vera!"
I felt his presence press against me—not a physical body, but an emotional weight. It was a hunger. A desperate, starving need to exist. For a second, the pain shifted. It became something else. A heat. A strange, magnetic pull that made my skin prickle. I could feel the exact moment his code locked into my neural pathways, a click that echoed in the center of my chest.
*Sync Rate: 65%... 80%...*
My breathing slowed. The pain didn't disappear, but it became a background hum, a vibration I could ride. I felt my muscles knit back together, the servos in my arm snapping into a perfect, lethal alignment. I didn't just feel stronger; I felt *aware*. I could hear the heartbeat of the guard two hallways over. I could feel the electromagnetic hum of the security cameras in the ceiling.
"See?" Echo whispered. His voice was different now. Softer. Intimate. "We're not two things anymore. We're one."
I stood up. No wobble. No glitch. I moved with a fluidity I hadn't possessed since before the betrayal. I looked down at my hand and saw the chrome shimmering, a faint blue light pulsing beneath the metal skin, timed perfectly with my own heartbeat.
"I still hate you," I whispered, though there was no bite in it anymore.
"Hate is a strong emotion," Echo replied, and I felt a ghostly brush of fingers against my wrist—a phantom touch that sent a jolt of something that wasn't electricity through my stomach. "It's almost as good as love. Now, look up."
I didn't have to. The world shifted. My vision zoomed, cutting through the steel walls, through the concrete floors, slicing through the city's grid like a knife through silk. I wasn't seeing with eyes; I was seeing with the city's own nerves.
Data streamed across my retinas in gold and crimson. I saw the guards, the heat signatures of the drones, the encrypted locks on the doors. And then, I saw *him*.
*Sync Rate: 100%*
My eyes didn't just change color; they ignited. A piercing, electric violet that burned through the dark.
There, in a high-rise penthouse three miles away, a single golden dot pulsed on the map. A signature I'd know anywhere. The biometric frequency of the man who had ordered my disassembly.
Caspar.
He was sitting behind a desk, sipping a drink, completely unaware that a ghost with a chrome heart was now locked onto his coordinates.
"Found you," I breathed, the words vibrating with Echo's shared hunger.
"Don't get too excited," Echo whispered in my ear, his voice sending a shiver down my spine that had nothing to do with the cold. "We have to get out of this hole first. And the door behind you just opened."
I spun around, my arm snapping into a blade-like edge, just as the first guard stepped into the light, his rifle aimed straight at my chest. He didn't even have time to scream before I—