The ticking of the Depth-Buster didn't make a sound, but Kaito could feel the rhythmic pulse of its magical detonator through the very soles of his boots. The Silent Abyss, usually so still and ancient, was now a pressure cooker of impending destruction. Behind him, the wreckage of General Vane's steam-suit hissed, leaking oily fluids into the pristine white sand of the temple floor.
"One hundred and eighty seconds," Kaito whispered, his breath coming in short, sharp gasps.
He turned his full attention back to the Eternal Frost. The ice block was massive, a translucent tomb that had held his father, Commander Ren, for ten long years. Kaito's hands were still glowing with the fierce, white-hot light of the Abyssal Core. He knew that if he didn't break this seal now, the Depth-Buster would turn this entire chamber into an underwater graveyard, and his father would never wake up.
"Tide-Walker Secret Art: Core Resonance!"
Kaito slammed both palms against the freezing surface of the ice. Instead of trying to smash it with brute force, he began to vibrate his own magical energy to match the frequency of the frost. The entire temple groaned in protest. Dust and ancient coral fragments fell from the ceiling as the building's structural integrity began to fail under the dual pressure of Kaito's magic and the approaching bomb.
CRACK!
A spiderweb of fractures erupted from where Kaito's hands touched the ice. The sound was like a thunderclap underwater.
"Come on... just a little more!" Kaito roared, his muscles bulging under his diving suit. The white light from his eyes grew so bright that it illuminated the darkest corners of the throne room.
With a final, deafening shatter, the Eternal Frost exploded. Thousands of diamond-like shards flew through the water, glinting in the magical light. Commander Ren's body went limp, falling forward. Kaito caught him just before he hit the sand. His father felt impossibly light, his skin cold and pale from a decade of magical stasis.
"Father? Can you hear me?" Kaito shook him gently, his heart hammering against his ribs.
Ren's eyelids flickered. His eyes, once a piercing blue like Kaito's, were now a dull, exhausted grey. He looked up at Kaito, his lips moving but no sound coming out. Then, slowly, a spark of recognition returned. "Kaito...? You... you have the eyes... of the Abyss..."
"No time for talk, Dad! We have to move!" Kaito hauled his father's arm over his shoulder.
They began the agonizing trek back toward the hidden alcove where the Azure Ghost was docked. Every step felt like walking through thick mud. The temple was literally falling apart around them. Massive pillars of black coral were toppling, crushing the remaining imperial equipment.
Behind them, General Vane was struggling to his feet, his face a mask of bloody fury. "You... you won't make it!" he screamed, coughing up seawater. "The blast radius is five miles! No ship can outrun it!"
Kaito didn't look back. He reached the Azure Ghost and practically threw his father into the co-pilot's seat. He jumped into the pilot's chair and slammed the canopy shut, the airtight seals hissing as they locked.
"Status, Silas!" Kaito shouted at the ship's AI interface.
"Core at 120% capacity, Kaito," the ship's voice hummed, pulsing with the new Abyssal energy. "The Depth-Buster is ten seconds from impact. If we don't leave now, we will be vaporized."
Kaito's fingers flew over the controls. He didn't just engage the thrusters; he tapped into the ship's final hidden protocol—the one his father had hinted at years ago. "Protocol: Leviathan Sprint!"
The Azure Ghost didn't just move; it transformed. The Ghost-Steel plating shifted, streamlining the ship's shape until it looked like a literal predator of the deep. The engine let out a roar that pushed back the surrounding water, creating a vacuum bubble around the vessel.
BOOM.
The Depth-Buster hit the seabed. A massive wave of white, superheated energy expanded outward, turning the Black Coral Temple into ash in less than a second. The shockwave caught the tail of the Azure Ghost, sending it tumbling through the dark water.
Kaito gritted his teeth, fighting the controls as the ship spun wildly. The G-force was so intense that his vision started to turn red at the edges. "Hold on, Dad!"
They were being chased by a wall of fire and pressure. The Azure Ghost screamed as it hit the edge of the Silent Abyss, shooting upward toward the surface at a speed that defied every law of naval physics. They passed the imperial destroyers—which were being tossed around like toys by the shockwave—and kept going.
As they finally cleared the blast zone and entered the calmer waters of the upper Dead Zone, the ship's alarms finally stopped their frantic screaming. Kaito slumped back in his seat, his chest heaving. He looked over at his father.
Commander Ren was looking out the canopy at the glowing ruins far below. He then looked at Kaito and placed a trembling hand on his son's shoulder. "You did it, Kaito. You broke the seal. But the Empire... they weren't just after me. They were after the map inside my mind."
Kaito's heart sank. "The map to the Abyssal Gate?"
"No," Ren whispered, his voice trembling with fear. "The map to the world below the Gate. And now that the temple is gone... the Gate is wide open."