CHAPTER 20: THE EDGE OF THE TRENCH
The silence of the Drowned Forest was instantly replaced by a chaotic, wet clicking.
Floating in the pale-yellow twilight of the glass sponges, Rin stood atop the copper nose of The Silt-Cutter. The three Drowned that had slipped from their ruptured cocoons did not move like humans in water; they swam with a sickening, twitching agility, their long, pale limbs snapping in unison as they closed the distance. Their circular, needle-fanged maws were open wide, clicking frantically like rusty shears as they locked onto the bright emerald frequency pulsing from her neck.
[They seek the spark, Echo!] the Guardian’s voice echoed in her mind, no longer a gentle tide but a crashing wave of warning. [Do not let them taint your blood. The nursery is waking!]
The first monster lunged, its webbed claws reaching for her throat.
Rin did not retreat. She planted her bare, basalt-plated feet firmly on the curved metal hull of the sub. As the creature neared, she spun mid-water, her right arm cutting through the current in a swift, powerful arc. Her hardened, obsidian-like claws sliced clean through the monster's pale chest.
HISS.
A thick cloud of foul black bile erupted from the wound, but the creature felt no pain. It thrashed wildly, its remaining hand clamping onto her shoulder, its circular mouth snapping mere inches from her cheek. The freezing, oily static of the Blight surged against her skin, attempting to invade her thoughts.
Thump... Thump... Thump...
Rin's heart hammered in her chest, a deep, resonant rhythm that pushed the static back. She channeled a sudden, white-hot pulse of bioluminescent energy through her shoulder. The raw power of the ocean’s origin flared from her skin.
FLASH.
The monster shrieked silently as the white light boiled its corrupted flesh. It dissolved into a harmless cloud of pale ash, but the other two were already upon her. One clamped onto her ankle, dragging her off the hull, while the third shot toward her face.
Inside the pod, Bael’s face was pressed against the glass, his single eye wide with terror. He slammed his fist against the manual override panel, desperately trying to force the decompression chamber to cycle faster.
"Rin! Get back inside!" his muffled scream echoed weakly through the thick glass.
But Rin was entirely focused on the struggle. Floating weightless in the dark, she twisted her body, using the momentum of the current to swing the monster attached to her ankle directly into the path of the second attacker. The two pale bodies collided, tangling in the water.
Before they could recover, Rin swam forward, her basalt fingers gripping the thick glass-like trunk of a nearby wind-turbine sponge. With a sudden, explosive push of her legs, she propelled herself toward them, her fists clenched.
She drove her basalt-plated knuckles directly into the faceless head of the first monster, shattering its skull-less frame. In the same motion, her left hand gripped the throat of the second, her obsidian claws crushing its windpipe.
CRACK.
The water cleared, leaving only drifting patterns of grey ash and black bile. Rin hovered in the silent current, her chest heaving, her collarbone gills rippling rapidly as she drew in the cold, oxygen-rich seawater. Her emerald-green runes pulsed with a fierce, protective light, casting a vibrant glow across the pale-yellow branches of the forest.
But the quiet did not return.
Deep within the silt of the ocean floor, the roots of the glass sponges began to vibrate. The high-frequency shockwave of her energy discharge had traveled through the water, and now, the entire nursery was responding.
Across the forest, hundreds of black-threaded cocoons began to twitch in unison. The pale, bloated shapes inside were turning, their circular mouths opening as the collective hive-mind of the Blight woke from its slumber.
"Rin! The hatch is open! Jump!" Bael’s voice vibrated through her mind.
Rin didn't look back. She kicked her legs, diving headfirst into the open decompression chamber of The Silt-Cutter. The moment her feet cleared the threshold, she reached out and slammed the outer copper hatch shut, spinning the heavy iron wheel until the locking bolts engaged.
HISS-WHOOSH.
The water in the chamber was violently pumped out, replaced by the freezing, oil-smelling air of the cabin.
The inner hatch slid open, and Rin collapsed onto the wet iron floor, shivering as her gills closed and her lungs adapted back to drawing in the cold air. Bael immediately threw a thick, wool grease-blanket over her shoulders, his massive hands trembling as he helped her sit up.
"By the Trench, nhóc..." Bael whispered, his voice cracking. "You almost got yourself eaten. Don't you ever do that again."
"The forest is awake," Rin gasped, her teeth chattering from the sudden temperature shift. Her basalt scales were slowly receding, sliding beneath her pale skin like cooling lava. "We have to go. Now."
Elias was already at the auxiliary boiler panel. He didn't ask questions; he simply reached out and slammed the main fuel-valve open.
"Sparking the boiler!" Bael roared, diving back into the pilot's chair.
CLANK-BOOM.
Deep in the stern of the pod, the heavy brass turbines roared to life, their mechanical hum sending a powerful, deep-bass vibration through the water. The heating coils flared, throwing a wave of hot air through the vents that instantly began to melt the frost on the walls.
Through the glass viewing dome, Rin watched as the pale-yellow twilight of the forest turned into a nightmare.
Hundreds of the Drowned were slipping from their ruptured cocoons, their pale, waterlogged bodies forming a massive, writhing swarm that was swimming toward the pod. Their long, webbed limbs cut through the water, their faceless heads twitching in unison as they followed the loud, rhythmic vibration of the sub's steam engine.
"They're closing the gap!" Bael yelled, throwing the throttle fully forward. "Thirty knots! We're red-lining the pressure!"
The Silt-Cutter shot forward, its copper propellers churning the water into a boiling white trail. The pod tore through the delicate, glass-like branches of the sponges, shattering the ancient structures into millions of falling, crystalline needles that sparkled like diamonds in the beam of their searchlight.
The swarm of the Drowned pursued them, their numbers so vast they looked like a living, pale ribbon of flesh cutting through the dark. Several of the faster monsters managed to leap onto the hull, their webbed claws scraping against the copper plates as they tried to find a seam to tear open.
"They're on the hull!" Bael growled, the steering column vibrating violently in his grip. "They're trying to block the rudder cables!"
"Hold her steady, welder," Elias said, his voice calm, almost serene, amidst the chaos. He walked up to the viewing dome, his sightless eyes rolled upward. "We are approaching the edge of the shelf. The deep trench is just ahead."
Rin pressed her hand against the glass.
In her mind's eye, the thermal map of the ocean was changing. The flat, silt-covered bottom of the Drowned Forest was ending abruptly. Just two hundred meters ahead, the seabed dropped off into a vertical, bottomless chasm that plunged miles down into the absolute, pressure-crushing dark.
This was The Gaping Abyss (Vực Thẳm Vô Tận)—the lowest trench of the Black Waters, where the ancient crust of the earth had split open.
"The drop-off!" Rin cried out. "Bael, dive! Dive straight down!"
"If we dive at this angle with this velocity, the hydro-planes will shear off!" Bael roared.
"Do it!" Elias commanded, his staff striking the metal floor. "Let the pressure wash them away!"
Bael grunted, a feral growl escaping his chest. He grabbed the heavy iron dive-planes lever and shoved it completely forward.
The Silt-Cutter tilted violently, its nose pointing sixty degrees downward as it shot over the edge of the shelf.
The transition was instantaneous.
The pale-yellow light of the Drowned Forest vanished, replaced by the absolute, pressure-crushing cold of the lowest trench. As the pod plummeted deeper, the water pressure skyrocketed.
CREEECH-CLANG.
The immense, natural weight of the abyss pressed against the outer hull of the pod with a sudden, suffocating force. The copper plates groaned, the heavy brass rivets tightening to their absolute limits.
The monsters clinging to the hull did not have the basalt armor that Rin possessed. As the pod crossed the two-hundred-meter mark, the immense pressure of the deep began to crush their pale, waterlogged bodies. Their elongated limbs buckled, and their hollow chest cavities collapsed under the weight of the water.
One by one, the Drowned were torn from the copper hull, their lifeless, flattened bodies tumbling into the dark void behind The Silt-Cutter as they sank into the silent grave of the trench.
Inside the cabin, the pressure gauges hummed, the needles slowly settling just a hair's breadth below the red danger zone.
The silence returned, deep and absolute.
Bael slowly pulled the dive-planes back, bringing the pod into a stable, level glide. He let out a long, shuddering breath, wiping a thick layer of cold sweat from his brow as he looked at the dashboard.
The indicator lights were green. The hull had held.
"We're down," Bael whispered, his single eye staring into the endless blackness of the viewing dome. "We're in the deep trench."
Elias smiled, his hand gently patting Rin's head. "You did well, little Echo. You showed the forest that the water does not belong to the rot."
Rin looked out the glass.
Without the searchlight, there was no light. There were no glass sponges, no Drowned, no warships. There was only the vast, majestic emptiness of the deep.
But as she stared into the bottomless dark, she felt it.
Far, far below them, hidden in the deepest silt of the trench floor, a clean, sharp blue-white light was pulsing. It was the rhythm of the second Salt Crystal, its ancient, pristine energy calling out to her through the miles of silent water.
The first ten chapters had been her awakening. The next ten had been her escape.
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But as the pod drifted deeper into the Gaping Abyss, Rin knew that the real journey—the struggle to find the remaining crystals and save the ocean from the creeping darkness—was only just beginning.
"Take us down, Bael," Rin said, her amber eyes reflecting the soft, steady green glow of her runes. "The next key is waiting."
