Elara showed us the laboratory.
Charts covered the walls—animal DNA, human DNA, black organisms, compatibility matrices that looked like spiderwebs drawn by a madman. I studied them, my eyes tracking patterns I barely understood, feeling the black substance in my veins stir as if recognizing its own blueprint.
"Why does it spread?" I asked.
"Because it is alive. Because it wants to survive.
Because it is a colony, not a creature, and colonies grow or they die. It spreads because not spreading is death."
"Why does it choose some people?"
"It doesn't choose." Elara pointed to a chart showing genetic markers, dominant and recessive alleles, probability curves that dipped and spiked like a dying heartbeat. "Compatibility."
Mara looked at the data. "What determines compatibility?"
"Dominant genetic expression." Elara tapped a photograph of a jaguar, its eyes glowing in the dark.
Then an eagle, wings spread, talons extended. "The organism takes what already dominates your biology and pushes it beyond natural limits. It finds the predator in you, Kael. It finds the flyer in you, Mara. And it makes them undeniable."
I looked at my claws. "And the black substance?"
"Adaptive matter. It rebuilds damaged tissue."
"That's why I heal."
"No." Elara looked at me, her eyes ancient and sad.
"That's why you survive. Every time you transform, your body is learning. Recording. Optimizing."
"Learning what?"
"How to become something that can survive. Something that doesn't need oxygen. Something that doesn't need food. Something that doesn't need to be human."
Mara whispered: "And if it learns enough?"
Elara looked toward the sealed laboratory doors. "It may stop needing a human body. It may decide that the translation is complete. And when that happens..."
The lights suddenly went out. Something slammed against the outer door—heavy, rhythmic, deliberate.
Not an explosion. A knock.
Elara whispered: "They found us."