They installed thirty-seven synthetic Cores in Renn Vasik's chest over twelve years.

Thirty-six failed. Some burned out. Some dissolved. One worked for four days — long enough for a fourteen-year-old boy to feel Flux in his channels for the first time, long enough for him to smile — before it tore itself free and took the smile with it. The thirty-seventh worked. It didn't just work. It kept growing. No biological ceiling. No grade cap. No limit the system could measure.

Renn killed two guards on his way out. He was eighteen. He'd never been outside.

A forged identity gets him into Aurelius Academy, a mid-tier cultivation school where nobody asks too many questions about a late-enrollment Hollow with a C-grade meter reading and scars he won't explain. The plan is simple: hide, train, survive. Don't let the corporation that made him find out where he is. Don't let the Academy find out what he is.

The plan lasts about three weeks.

His combat scores don't match his grade. His Resonance range exceeds what the textbooks say is possible. His compression technique works backward and produces results that make his instructors write notes they won't show him. And two women have decided that his secret is worth protecting — for very different reasons.

Suki is ranked first in the year. She sits down at his table uninvited, tells him his channeling is wrong, and doesn't leave. She trains with him every day, pushes him past every limit, and the Flux that flows between them during paired exercises carries something that the cultivation manual doesn't have a chapter for.

Petra is his healer. She puts her hands on his scars and feels twelve years of pain written in his channels and she doesn't flinch. She builds a wall of medical protocols and bureaucratic shields between him and the people who want to cut him open again. She knows what he is. She's choosing to stay.

The corporation that spent millions building him wants their prototype back.

The Academy's instruments are starting to notice that the C-grade in row six is producing A-grade output.

And his Core — the thing they installed in an empty body, the thing that should have killed him like the first thirty-six — won't stop evolving.