As he stepped beneath its towering canopy, the forest greeted Kain with an ominous stillness. Shafts of dim light filtered through the dense web of branches above, casting jagged shadows on the forest floor. The air was heavy and damp, carrying the earthy scent of decay mixed with something sharp and unfamiliar. He hadn’t been inside for long, but already he felt the weight of the place pressing down on him.

  RIFTWOOD DUNGEON

  [F-RANK]

  Welcome to the Riftwood Forest, a dungeon where only the strongest survive.

  This biome is a crucible of evolution, where all creatures compete ruthlessly for dominance and resources. Within these warped woods, predators stalk their prey, and survival hinges on cunning, strength, and adaptability.

  Dungeon Rules:

  1. Killing the leader of a faction destabilizes their hierarchy, causing remaining members to weaken or disperse.

  2. Resources such as Riftfruit and Sap Veins grant power to those who claim them, but they are heavily contested.

  3. All actions have consequences. Foes adapt to repeated strategies.

  Kain exhaled, his grip tightening on the jagged pole he’d managed to salvage. His lips curled in a wry smile.

  An F-Rank dungeon. Just a few days ago, this place would’ve been child’s play. I could’ve cleared it without breaking a sweat. Now? Literally anything could kill me, I can’t wait.

  His muscles tensed as his hunter’s instincts kicked in. He moved slowly, carefully, his steps silent as he wove through the underbrush. Every rustle, every faint vibration set his senses on edge.

  The Riftwood was alive with sound—chittering, clicking, and growls in the distance. The ecosystem was chaotic but eerily familiar. He’d grown up in a world dominated by insects, where the few remaining mammals were desperate scavengers. But this? This was something else. There were mammals here… thriving.

  Kain paused as movement caught his eye.

  [RIFTBEAR - LEVEL 9]

  Massive and territorial, the Riftbear is a predator adapted to the chaotic ecosystem of the Riftwood. Its bark-like armor provides exceptional defense, while its powerful limbs can crush foes with ease. Riftbears are known to protect high-value resources, particularly Riftfruit Trees, which grant significant energy to those brave enough to claim them.

  Ahead, a massive Riftbear lumbered into view, its bark-like armor blending with the gnarled roots of the trees. It moved with deliberate slowness, its sharp claws tearing into the base of a tree. At its feet lay several large fruits, their orange skins faintly pulsing with an inner light. The bear leaned down, grasping a fruit in its jaws before ripping it free and chewing noisily.

  Kain crouched, keeping his presence concealed as he observed the beast. “Riftbear,” he muttered to himself. “Massive, armored, and stubborn as hell. Not much different from the ones in the colony books.” He studied its movements, his mind instinctively cataloging its habits and weaknesses.

  I could try to bait it into charging me, he thought, his gaze flicking to the jagged pole in his hand. If Heart of the Storm activates again, it’ll be over in an instant. But his hands trembled slightly as he remembered the surge of power—the pain and chaos it brought. He still didn’t know how to control it, or if it would even activate under his terms.

  “Too risky,” he murmured. “I’m not dying again just to experiment.”

  Kain leaned back, letting out a quiet sigh as the bear continued to gorge itself. Just as he began planning another approach, the forest erupted into chaos.

  A violent chittering pierced the air, and four Rift Ants surged from the undergrowth. Kain called on the System to view what they were:

  [RIFTANT SCOUTS - LEVEL 3]

  [RIFTANT SCOUTS - LEVEL 4]

  Small but deadly, Rift Ant scouts operate in coordinated packs, overwhelming prey with precision and acid-coated mandibles. Their rigid social structure makes them both highly efficient and vulnerable to disruption if the pack leader is eliminated. These ants typically travel in groups of 3-6, gathering resources and information for their colony. Larger swarms or leaders are likely nearby if scouts are spotted.

  They were enormous, each the size of a large dog, with glossy black carapaces and serrated mandibles that dripped with acid. The bear roared in surprise, rearing up on its hind legs, but the ants moved with brutal efficiency.

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  Two latched onto its legs, their mandibles slicing through fur and flesh. The bear swiped at them, its claws leaving gouges in their exoskeletons, but the ants didn’t relent. Two more leapt onto its back, stabbing their mandibles into its vulnerable joints.

  Kain watched in horrified fascination as the final two ants went for the bear’s throat, their acid saliva hissing as it melted through its defenses. The Riftbear thrashed, roared, and finally collapsed under their relentless assault.

  In moments, the forest was silent again. The ants began dismembering the bear’s corpse, tearing off chunks of meat and dragging them into the shadows.

  Ants… Kain thought, his jaw tightening. Even here, they’re already adapting. Already taking over.

  In his time, humans and insects were locked in a desperate struggle for survival, specifically the ant colonies. The ants had become the dominant species, their rapid evolution making them nearly impossible to defeat.

  Colonies of humans had persisted, but only by fortifying themselves against an endless tide of chittering mandibles and acidic venom. Every battle against the swarm had been a desperate gamble to hold onto dwindling scraps of land.

  But now, in this earlier era, the balance was different. Mammals still thrived—powerful and wild. The insects, though growing stronger, had not yet cemented their dominion. It was a fleeting window of opportunity, one Kain realized he might be able to exploit.

  “These ants,” Kain whispered, watching the ants dismantle the bear with merciless efficiency. “They’re the future. And if I don’t take them out, they’ll be my end, too.”

  He clenched his fists, feeling the faint hum of energy still lingering beneath his skin. The Riftwood wasn’t just a dungeon—it was a testing ground, a place where he could sharpen his skills and refine his Dao. But more than that, it was a glimpse into how humanity might survive, or fail, in the face of the system’s overwhelming brutality.

  Kain’s thoughts turned to his time in the colonies. As an S-Rank Hunter, he fought to protect his people, never questioning the origins of the colonies or the trials that must have forged them.

  The elders had spoken only vaguely of the early days, of battles fought and alliances made, all Kain’s knowledge of the early days came from reading in his spare time and classes. But standing here, watching the Rift Ants claim their territory, a cold realization crept over him: this might be where it all began.

  If this era was the foundation of the colonies, then his presence here mattered. He wasn’t just fighting to survive—he was fighting to understand. The insects had outpaced humanity in his time because they adapted faster and evolved ruthlessly. If he could learn their weaknesses now, if he could grow stronger before their dominance was complete, he might carve out an advantage humanity had long since lost.

  “This isn’t just about me anymore,” Kain murmured, his voice low but resolute. “This power, this Dao—it’s not just a second chance. It’s a tool. And if I use it right, maybe we don’t have to lose.”

  The weight of that thought settled over him like a cloud. He didn’t know how the colonies would eventually form or what trials the system would impose to decide who rose and who fell. But he knew one thing: strength would be the deciding factor. And strength was something he could build, here and now.

  Kain remained still as the ants split into two groups. Two of them scurried deeper into the forest, dragging small portions of the Riftbear’s remains. The other four veered off, carrying larger chunks toward what Kain suspected was their nest.

  He smirked. I’ve hunted packs before. Always take out the stragglers first.

  With practiced silence, he began tailing the smaller group, his body moving instinctively as memories of his old hunting days resurfaced. The ants were methodical, their movements precise and deliberate. Kain stayed downwind, using the thick undergrowth as cover to mask his presence.

  The forest seemed to grow darker as they ventured deeper, he noticed they were moving east, the light fading into an ethereal twilight. The air grew heavier, laced with a strange, metallic scent that prickled at Kain’s senses. The thick underbrush gave way to a clearing, and his heart quickened as the ants stopped at the base of an ancient tree.

  The tree towered above the surrounding forest, its gnarled trunk twisted with age and power. Its bark shimmered faintly, a kaleidoscope of muted gold and bronze that seemed to ripple like liquid metal when touched by the dim light.

  Massive, exposed roots spread outward in a labyrinthine network, their surfaces slick with glowing amber sap. The sap pulsed faintly, as though alive, each droplet moving sluggishly before falling into small, crystalline pools that dotted the forest floor.

  The air around the tree thrummed with energy, and the clearing was bathed in a warm, golden glow that felt both inviting and foreboding. Small motes of light floated lazily around the tree, like fireflies caught in an endless dance, their glow casting strange, shifting patterns across the roots.

  Kain crouched lower, his eyes narrowing as the ants approached. They carried their grisly cargo to the tree’s base, where they dipped their mandibles into the thick, luminous sap with greedy clicks. The sap seemed to invigorate them, their bodies twitching as faint crimson veins flared along their glossy black carapaces.

  The tree was beautiful, otherworldly, and yet Kain couldn’t shake the sense of danger that radiated from it. He tightened his grip on the makeshift weapon in his hand, the faint hum of his lightning Dao responding to the charged air around him. Whatever this tree was, it wasn’t just a part of the Riftwood—it was the heart of something far greater.

  The familiar blue rectangle flickered into Kain’s vision:

  SAP VEIN

  [F-RANK POWER NEXUS]

  The Sap Vein is a concentrated source of the Riftwood’s essence. Consuming its sap offers immense power at the cost of intense physical and mental strain. Predators are drawn to its energy, and few survive its trials.

  Kain’s eyes narrowed as he studied the ants. Their movements seemed sharper, more energized with every drop they consumed. He clenched his fists, lightning crackling faintly along his arms.

  If they’re feeding on this, then they’re stronger than I thought. I can’t let them get back to the colony with this boost.

  Quietly, Kain rose from his crouch. He activated [Lightning Dash], a faint charge of energy propelling him forward in a blur.

  He landed behind the ants, the force of his arrival scattering leaves and sending a sharp crack echoing through the clearing.

  The ants turned, their mandibles clicking furiously as they registered the threat.

  Kain’s lips curled into a grin, his body brimming with anticipation. “Alright,” he said, raising the jagged pole like a weapon. “Let’s dance.”