The sky over the village turned the color of a bruised lung as the Obsidian vines coiled around the iron remains of the Threashers, crushing them into scrap with a sound like grinding teeth. The caustic red sap hissed as it touched the cobblestones, eating through the stone as if it were parchment.
"Everyone! To the ridge!" she screamed, her voice cracking.
The villagers didn't need to be told twice. They screambled toward the high ground, the golden light she had returned to them acting as a faint sheild against the creeping black thorns. But as she watched them flee, she felt a tugging at her own wrist—not the warm pulse of the Heart, but a cold, parasitic drain.
The black vines weren't just attacking; they were feeding on the lilac mark on her skin.
"You want it?" she whispered, her eyes narrowing as the white glow of her time-vision flickered one last time. "Then take all of it."
She didn't run for the ridge. She leaped into the center of the rift, sliding down a slope of slick, black glass and thorn-choked roots. The air temperature plummeted.The air down here didn't smell like jasmine or pine; it smelled of ancient, airless stone and stagnant water.
At the bottom of the abyss, she found the True Root. It wasn't amber or gold. It was a massive, beating lung of black coal, wrapped in the skeletal remains of the First Forest. Every time it pulsed, the red sap surged, and another hundred feet of Thorns exploded into the world above.
"The jailer was right," a voice echoed through the dark. It wasn't the Yesterday girl. It was her own voice, layered with a thousand years of echoes." The Wood didn't hide the Heart. It hid this."
She stood before the coal lung, her hand trembling. To stop the surge, she couldn't just use the Pulse. She had to become the lock. She had to offer her own life-force to the Obsidian thirst that would hold the hunger back for another thousand of years.
But as she reached out, a single, tiny sprout of white vine—the last remnant of the Yesterday girl's sacrifice —bloomed from the center of her lilac mark.