Tina

I sat on the high stool in Lab 4B with my legs folded under me, back curved in that familiar ache that never quite went away after long sessions. The only light came from the monitors and the soft blue pulse of the containment chamber. Outside the windows the campus had gone dark hours ago. Inside, the air smelled of sterilized metal, ozone, and the faint residual bitterness of Dr. Francis’s endless black coffee.

My name is Tina. Twenty-three years old, five foot two, one hundred thirty pounds of pale skin and sharp elbows. My voice had always been raspy, like someone had taken fine sandpaper to my throat when I was small and never quite finished the job. Most people found it surprising the first time they heard me speak. I had long since stopped caring.

I adjusted the magnetic field by another three microteslas and watched the nanobot swarm reorient itself inside the saline. The cluster moved with the quiet, perfect discipline of something that finally understood its purpose. Nine milliseconds of synaptic latency. Clean return channel. No packet loss for nineteen continuous minutes.

I had been chasing this number for fourteen months.

“Dr. Francis,” I said, the rasp carrying farther than my volume should have allowed. “You should come look at this.”

He set his mug down with the careful precision of a man who had learned not to spill things near sensitive equipment. Mid-to-late forties, salt-and-pepper hair kept shorter than it used to be, white coat still buttoned all the way up even though we were alone. He crossed the lab and leaned in close enough that I could smell the coffee and the clean, almost medicinal soap he preferred.

I tilted the primary monitor toward him and scrolled back through the telemetry.

“Watch the latency,” I said. “Previous generations hovered around forty milliseconds on the motor cortex link. I have it at nine. The return channel is stable. The host nervous system is no longer treating the signal as foreign. It’s integrating it as local. Ownership of the action is being rewritten in real time.”

He stared at the graphs the way I did: hunting for the flaw that had to be hiding somewhere. When he couldn’t find one, his eyebrows lifted a fraction.

“Nine milliseconds,” he said quietly. “That’s inside natural proprioceptive range.”

“Exactly.” I rotated the three-dimensional overlay so he could see …