As Yun Xi and Yue Lan stepped through the parting gears of the Dreaming Clock, they found themselves descending a winding staircase carved from fractured time itself—each step ticked as if the moment they touched it, it aged and passed into memory. The air grew dense, not with dust, but with the pressure of knowledge too ancient to hold form.
At the base of the stairs, a vast library opened before them.
It was unlike any library Yun Xi had ever seen. Floating tomes hovered midair, their pages fluttering like the wings of caged butterflies. Shelves twisted upward into a ceiling so high it disappeared into mist, and luminous ink spiraled like constellations across the floor.
> [Location: The Echo Library]
Storage Node of Forgotten Outcomes. Host's access privileges: Tier 1.
Caution: Echo Overload may occur with prolonged exposure.
Yue Lan's eyes widened. "This place… is it made of memories?"
"No," Yun Xi said slowly, reaching out to a drifting book that pulsed with light, "it's made of choices. Every possible path… locked in text."
As his fingers brushed the tome's surface, it responded—not with text, but vision.
—He saw himself walking away from the System. Letting the world burn. Peaceful, lonely. Regretful.
He snatched his hand back.
Yue Lan caught the flicker in his expression. "What did you see?"
"An ending that was too easy," he muttered.
They walked further in, the library corridors shifting to accommodate them, always offering a path yet never the same twice.
Suddenly, the floating books parted ahead of them, like birds avoiding a storm.
From the center chamber emerged a figure—old, cloaked in overlapping scrolls, eyes blindfolded with ribbons of fading script.
"Seeker of Regret," the figure said. "You have come early."
Yun Xi stiffened. "Who are you?"
"I am the Keeper," he replied, voice dry as paper. "I catalog the worlds that might have been. And I guard the Vault of Warnings."
Yue Lan frowned. "What does that mean?"
The Keeper turned slowly. "It means I show you what your enemies already know."
A ripple passed through the library. Dozens of tomes opened at once.
In the air before them, images flickered:
—The Harvester's original directive: Cleanse Echoes. Eliminate Yun Xi.
—A conversation between unknown authorities: "The boy is progressing faster than the model. Begin Phase Three."
—Yun Xi's parents… sitting at their kitchen table, unaware of the dark-gloved figure watching from the shadows across the street.
Yun Xi's breath hitched.
"They're targeting my family."
The Keeper nodded. "Echoes awaken. But so do shadows. With every system fragment you claim, the opposing balance grows more aggressive."
Yue Lan snapped, "Then tell us how to stop them."
The Keeper reached into his robes and pulled a single, sealed book—its cover bound in cracked glass.
"This," he said solemnly, "is not a book of your future… but theirs."
He handed it to Yun Xi.
The moment it touched his hands, it burned—not with heat, but with truth.
> [Unlocked: The Book of the Harbinger]
Caution: Viewing this will reveal pre-emptive threats. Emotional load may exceed limits.
Yun Xi opened it anyway.
The pages turned themselves, showing fragmented memories not his own: Black sites. Experiments on system users. A child curled in a metal box—his eyes glowing with a corrupted system rune. Soldiers trained to sniff out regret. A masked figure who watched it all and smiled without a face.
"Who is that?" Yun Xi whispered.
The Keeper's blindfold tightened. "That… is the Harbinger. He is not an enemy of the system. He is what the system becomes… when fear wins."
A coldness settled in Yun Xi's chest.
Yue Lan stepped forward. "What can we do?"
The Keeper bowed. "Survive long enough to rewrite the Book. Your story must overwrite his."
The library around them trembled.
From behind, the entrance gears ground open again—this time not by their call.
A presence entered.
Tall. Cloaked in black armor with mirrored skin, reflecting every version of Yun Xi's expression at once.
"Time's Witness," the figure said. "Your next trial begins."
Yun Xi stepped forward, holding the burning book in one hand and the Echo Blade in the other.
"I'm ready," he said.
The Witness tilted its head. "Are you? Then prove it. Not with power… but with memory."
It raised a single hand.
Reality shattered around them like glass.
Yun Xi, Yue Lan, and the Keeper were pulled into a spiral of collapsing echoes.