Lap forty-one felt different from the moment the lights went out.
It was not a loud difference. It was not the sudden, blinding wall of fog that had characterized the earlier sessions, nor was it the violent sensory jamming that had nearly broken his mind on lap thirty-nine. This was a change in the internal architecture of Leo Kaito himself.
The Auditory Mapping Stage 2 integration had finished somewhere in the liminal space between the grid and the first corner, settling into his nervous system with the quiet finality of a software patch reaching one hundred percent.
He didn't need to check his HUD to know it was active. He could hear it.
As he braked for Turn 1, the world became a construction of sound. He heard the tire load shift in the drivetrain note. It was a fractional change in pitch, a tiny, metallic whine that told him the rear tires were working harder than the fronts for 0.2 seconds through the entry.
