The Bloodfang Dungeon smelled like rust and rot.
Aryan adjusted the weight of the supply pack on his back for the hundredth time that hour, his shoulders screaming under straps that had cut grooves into his skin years ago. Sixty kilograms of healing potions, mana crystals, and emergency rations — and not one of them was his to use.
"Porter. Move faster," Kael called back without turning around. The A-Rank Swordsman walked like he owned the cavern, his blade resting lazily against his shoulder. "We're losing daylight."
There was no daylight three hundred meters underground. Nobody corrected him. Nobody ever did.
Aryan said nothing. He had learned, over eight months with the Silver Fang squad, that silence cost less than words. Words got you mocked. Silence just got you ignored, and ignored was survivable.
He was nineteen years old and still F-Rank — the lowest classification the System gave out, one step above "unawakened." Most people his age who tested F-Rank quietly slipped back into normal jobs, normal lives, away from the dungeons. Aryan couldn't. The debt his mother's hospital bills had left behind didn't care what rank he was. So he carried bags. He held torches. He triggered traps so the real hunters didn't have to.
He had never killed anything in his life. He had only ever been the reason other people didn't have to.
"Boss chamber's just ahead," said Reyna, the squad's B-Rank Mage, checking her detection crystal. "Sensor's reading something big. Shadow-type."
"Good," Kael grinned. "I want a clean kill for the Guild report. Something with a good story."
They didn't see the side tunnel.
Aryan did — a hairline crack in the rock wall, the kind only a porter who spent his life staring at the ground instead of at glory would notice. A faint, sour smell drifted from it. Acidic. Wrong.
"Wait," Aryan said quietly. "There's a second presence. Smaller, but—"
"Did the bag ask a question?" one of the teammates laughed.
Aryan stopped talking.
They walked into the boss chamber. The Shadow Wolf — Level 15, exactly as the scan predicted — was waiting in the dark at the center, patient as a held breath. What the scan hadn't caught was the second set of eyes further back in the shadows, eyes that belonged to something the size of a delivery truck.
The fight went wrong in under a minute.
Reyna's first spell missed. The wolf was faster than its level suggested, closing the gap before she could recast. Kael's blade found its mark eventually, but not before claws raked across his side, and not before the thing in the back of the cave let out a sound that wasn't a roar so much as a verdict.
"Bloodfang Alpha," Reyna breathed, her detection crystal cracking in her grip. "That's not a Level 15 dungeon. That's a Level 25 boss nest. The sensor only caught the weaker one—"
"Retreat!" Kael barked, already moving.
Nobody moved to grab Aryan.
He stood frozen for half a second too long — long enough to watch four people he had bled for, healed, fed, and protected for eight months disappear around a bend in the tunnel without a single backward glance.
The wolf turned its head toward him. Whatever it had been stalking before, it had just found something easier.
"Wait—" Aryan started.
"You're bait now, porter," Kael's voice floated back, almost apologetic, almost amused. "The Alpha will be busy with you long enough for the rest of us to reach the exit. Try not to scream too loud. It's bad for morale."
Footsteps. Fading. Gone.
The wolf lunged.
Aryan didn't dodge — he didn't know how. The impact threw him into the cavern wall hard enough that he heard something in his chest give way before he felt the pain arrive a half-second later, sharp and total. He slid down the rock, vision swimming, copper flooding his mouth.
This is it, he thought, distantly, like the thought belonged to someone else. Eight months of carrying their bags. And this is how it ends. Forgotten before I even finished dying.
The wolf approached slower now, almost lazily, the way something eats when it knows its meal can't run.
Aryan's hand twitched against the cold stone. He thought of his mother's hospital room, of the silver coins he never got to spend, of Kael's voice calling him porter like it was the only name he'd ever earned.
I don't want it to end like this.
I don't want to die forgotten.
I want—
A cold, mechanical voice cut through the haze, indifferent to the blood and the dark and the jaws closing in.
[Ding! Critical survival threshold detected.]
[Host's will to live has triggered an anomalous response.]
[Scanning... Host meets binding conditions.]
[The 'Infinite Upgrade System' is attempting to bind. This process cannot be reversed. Proceed? Y/N]
Aryan's cracked lips barely moved. "...Yes."
[Binding confirmed. 10%...40%...77%...100%.]
[System successfully bound to Host: Aryan.]
Time didn't freeze. That would have been too kind, too clean. Instead the world simply slowed, every second stretching thin enough that Aryan could watch the wolf's jaws descend toward his throat in agonizing detail, could count the cracks in its yellowed teeth.
[Emergency Skill Extraction in progress...]
[WARNING: Host has insufficient EXP for stable activation. Extraction will draw directly from Host's life force.]
[Proceed anyway? Y/N]
"...Yes," Aryan whispered again, not even sure what he was agreeing to anymore. Anything. Anything but dying exactly the way Kael wanted him to.
[Skill Acquired: Endure (Passive, Rank E)]
[Effect: Reduces incoming damage by a percentage equal to 5% per Host level. Current reduction: 5%. Overflow damage converts to Stamina recovery.]
[Skill Acquired: Hunter's Ledger (Passive, Rank E)]
[Effect: Grants minor EXP for survival actions — taking damage, traveling, defeating enemies. Scales with Host level.]
5%. Not invincibility. Not a miracle. Just five measly percent, and a system that sounded almost embarrassed to be offering it.
It was enough.
The wolf's jaws closed on his shoulder instead of his throat — he'd twisted, some new instinct screaming at muscles that had never moved like that before — and the pain that should have ended him instead came through duller, survivable, a wound and not a death sentence.
[+15 EXP — Damage Survived.]
[Level Up! Host has reached Level 2.]
Aryan screamed, more in shock than agony, and grabbed the only thing in reach — a jagged shard of broken stone from the wall — and drove it into the side of the wolf's neck with strength he didn't recognize as his own.
The beast yelped, reeling back, blood — strangely pale, faintly luminous — spilling across the cavern floor.
It wasn't dead. It wasn't even close to dead. But for the first time in his life, Aryan had hurt something instead of being the thing that got hurt.
[+25 EXP — Successful Strike.]
[Level Up! Host has reached Level 3.]
He was still bleeding. His shoulder was probably shattered. Somewhere deeper in the chamber, he could feel — actually feel, through some new and unwelcome sense — the much larger presence of the Bloodfang Alpha stirring, drawn by the noise, by the blood, by its wounded subordinate's cry.
Aryan pulled himself to his feet on legs that shook like a newborn animal's.
The wolf snarled and circled, favoring its wounded side now, wary of him in a way it hadn't been thirty seconds ago.
"You don't get to eat me," Aryan said, and his voice came out steadier than he expected, low and a little frightening even to his own ears. "Not today. Maybe not ever again."
The wolf lunged a second time.
This time, Aryan didn't fall.