The Underworld Market's purple crystal veins pulsed like slow heartbeats above Kairos's head as he walked deeper into the obsidian pathways. The air grew thicker, carrying the faint metallic tang of deep-ocean salt mixed with old incense and raw aether. Hooded figures moved like ghosts between stalls—some bargaining in whispers, others simply staring at glowing artifacts with hungry eyes. No one shouted prices here. This was not the noisy weapons district above. This was where the real power changed hands in silence.
The azure guidance line in Kairos's vision suddenly curved sharply left, pulling him toward a modest black tent tucked between two larger platforms. Unlike the flashy armor stalls or the floating blade displays, this one looked almost… ordinary. No glowing signs. No guards. Just a simple flap door and a wooden sign in ancient script that read "Echo Stones – From the Abyss."
The interface pulsed warmly.
[Destination Reached.]
[This shop specializes in raw ocean stones harvested by high-level Crystos. Many dive into the deepest trenches—Mariana, Arabian, even the uncharted Pacific rifts—risking leviathans and temporal riptides just to bring these back. Most stones are worthless rock. But sometimes… something wakes inside them. A crystal shard. A weapon fragment. An echo of something ancient. The bigger and older the stone, the higher the chance.]
Kairos pushed the flap aside and stepped in.
The interior was dimly lit by floating purple orbs that hovered like lazy fireflies. The floor was covered in thick black mats, and everywhere—on low tables, in open crates, stacked against the walls—were stones. Hundreds of them. Some small as fists, others the size of watermelons. Colors ranged from dull gray to deep obsidian with faint glowing veins. Each carried its own subtle aura—some hummed softly, others felt ice-cold to the touch even from a distance. A few had tiny cracks revealing inner glows: hints of red, blue, or gold.
Behind a simple wooden counter sat the shop owner—an old man with a long white beard, eyes hidden behind cracked spectacles, and a faint crystal shard embedded in his forehead like a third eye. He didn't look up immediately, just kept polishing a small stone with a cloth.
Kairos walked slowly between the piles, fingers brushing over rough surfaces. Some stones felt ordinary. Others made the Chrono Echo in his chest stir uneasily, as if recognizing old enemies.
The interface flared again, brighter this time.
[Stop.]
[That one. Third row, large obsidian-black stone with the faint silver crack running through the center.]
[I sense something… familiar. Ancient. Like an echo from the very first Fall. Not strong enough to identify yet, but the resonance is old. Very old.]
Kairos's gaze locked onto the stone the system highlighted.
It was massive—easily the size of a basketball, heavy-looking, jet-black with one jagged silver crack running diagonally across its surface like a lightning scar. The moment he stepped closer, a strange feeling washed over him. Not power exactly. Something deeper. Like standing at the edge of a memory that wasn't his. Ancient. Patient. Almost… lonely.
Without thinking, without haggling, without even asking the price, Kairos reached out and lifted it with both hands.
It was heavier than it looked—solid, dense, like it carried the weight of the entire ocean inside.
The old shop owner finally looked up, one eyebrow rising behind his spectacles.
"Boy… you sure you want that one? Most people test small stones first. That beast has been sitting here for three years. No one's cracked it open yet."
Kairos, still riding the impulsive wave, grinned like a rich idiot who had just won the lottery.
"Three years? Perfect. Means it's waiting for the right owner." He patted the stone like it was a loyal dog. "I'll take it. How much?"
The owner blinked twice. "Forty thousand credits. And that's because I like your confidence."
Kairos didn't even flinch. He pulled out his comm and transferred the amount instantly—like a man who had just bought a new coat instead of a mysterious ocean rock that might contain a god-killing weapon.
"Done," he said cheerfully. "Keep the change if there's any."
The owner stared at the transfer notification, then at Kairos, then back at the stone. A small, amused chuckle escaped him.
"You're either very rich or very stupid, young man."
"Both," Kairos replied with a wink, still holding the heavy stone like it weighed nothing. "Mostly the first one today."
Just then, raised voices erupted from outside the tent—two Crystos arguing loudly near the neighboring stall.
"You cheated me! That stone had a crystal inside and you knew it!"
"I cracked it fair! You lost the bid!"
Kairos glanced toward the noise, then turned back to the owner.
"What's going on out there?"
The old man sighed, adjusting his spectacles. "The usual. When someone finds a crystal or weapon fragment inside one of these stones, people lose their minds. They fight, bid, sometimes even duel right here in the market. Stones are like lotteries—most give nothing, but the lucky ones… they can change your entire rank overnight."
Kairos looked down at his own massive purchase, now cradled in his arms.
"Mera stone to bahut bada hai," he said, half-joking, half-curious. "Isme se kuchh nikalega ya nahi?"
The owner shrugged, a mysterious smile playing on his lips.
"Kaun keh sakta hai? Some stones stay silent for decades. Others crack open the moment the right person touches them. Yours… feels old. That's all I can say. Good luck, boy."
Kairos nodded, still grinning like he'd just bought the most expensive lottery ticket in history. He reached into his coat and pulled out a sleek black pouch—the Space Bag he had bought earlier from a quiet side stall.
It looked ordinary: small, palm-sized, made of supple black leather with faint glowing runes stitched along the edges. But this wasn't normal leather. The bag was crafted from crystallized void shards—rare drops from the deepest ocean trenches. Inside, it opened into a pocket dimension: extra space that ignored physics. You could store weapons, armor, food, even small vehicles, and the bag's weight never changed. Only high-level Crystos and rich collectors could afford them. Kairos had paid 15,000 credits for it without blinking.
He opened the bag's mouth. It expanded slightly, runes glowing soft purple. With a casual flick, he dropped the massive stone inside. The bag swallowed it whole—stone vanishing as if it had never existed—then shrank back to its original size, light as a wallet.
"Space Bag," he muttered to himself, patting it proudly. "Best purchase of the day."
The owner watched with mild amusement. "Careful with that one. If something big wakes inside your stone… the whole market might come hunting you next."
Kairos just laughed softly and slung the bag over his shoulder.
He stepped out of the tent, the purple crystal veins above pulsing brighter now. The argument between the two Crystos was getting louder—hands on weapons, auras flaring dangerously.
Kairos started walking forward, curious to see what the commotion was about.
Then he saw them.
Two figures—hoods thrown back—standing face to face in the middle of the walkway, power crackling between them. One held a glowing red shard. The other had a blade half-drawn.
And they looked ready to kill each other.
To be continued...