THE SYSTEM'S LAST DEBTOR

Chapter 1: A Very Expensive Lifeline

Water dripped from the moldering rafters of the subterranean hideout, each heavy splash echoing through the dark like a slow, rhythmic countdown. The air in the cellar tasted of rot, damp plaster, and the sharp, metallic tang of blood. On a thin, grease-stained mattress in the corner, Nara Velika gasped for breath, her fingers clawing at the collar of her frayed tunic.

Beside her, the pale blue holographic projection of her Free System—the bare-minimum utility suite provided to all registered commoners—sputtered violently. Its light, usually a reassuring sky-blue, flickered like a dying candle, turning a sickly, ash-gray.

"Reza..." Nara choked out, her voice barely a whisper. "I can't... I can't feel it anymore. The system is... it's going dark."

"Hey, look at me. Stay with me, okay?" Reza Arvand lunged forward, catching his sister as her chest convulsed. Her eyes rolled back, showing only the whites, and her small frame went terrifyingly rigid.

Reza’s heart hammered against his ribs like a trapped bird. He pressed his palm against her forehead; it was burning hot, yet her skin was clammy and pale. The gray holographic screen of her Free System fractured, shattering into a dozen useless, glittering pixels before dissolving into the damp air. Her vital signs had plummeted below the threshold of the system’s basic medical buffer. The Free System had abandoned her.

"No, no, no! Don't do this to me!" Reza yelled, frantically shaking her shoulders. "Nara! Wake up!"

In the silence that followed her fading pulse, a sudden, violent heat bloomed in the center of the cellar. The air grew heavy, smelling of ozone and scorched copper.

Before Reza’s eyes, a jagged, blood-red holographic window burst into existence. It didn't possess the soft, synthesized hum of the Free System. Instead, it tore through the dim light with a high-pitched screech, like metal scraping against stone. The borders of the UI pulsed with a predatory, aggressive crimson light.

[WARNING: CRITICAL SYSTEM FAILURE DETECTED IN nearby target.]

[CRIMSON USURY SYSTEM: ACTIVATED.]

[Would you like to open a line of credit? Terms and conditions apply. (High interest rates guaranteed!)]

Reza stared at the glowing red text. His skin crawled. Everyone in the borderlands knew about the Usury System. It was a forbidden, parasitic entity that preaded on the desperate, offering miraculous solutions in exchange for extortionate, ruinous prices. To touch it was to invite slow, agonizing ruin.

But Nara was slipping away. Her pulse under his fingers was nothing more than a faint, erratic flutter.

"I need a stabilization pack. A high-tier one," Reza spat, his voice trembling but filled with a sudden, desperate resolve. "Right now. What's it going to cost?"

A soft, mocking chime echoed from the red interface. A stylized, winking smiley face flickered on the screen before transforming into a list of options.

"Whoa, buddy, slow down," a voice chimed from the system. It was smooth, dripping with a sassy, casual amusement that felt horribly out of place in the damp cellar. "We don't just hand out top-shelf miracles for free. You're in a real tight spot, and quality costs. Let's see what you've got to offer."

"I don't have time for this!" Reza slammed his fist on the dirt floor. "Just tell me what you want! Money? Core stones? I'll find them!"

"Money? Oh, sweetie, please," the AI drawled, the text scrolling rapidly. "We deal in the good stuff. Physical assets. Personal concepts. You know, things that make you, you. Let's look at the menu for a Level 5 Vitality Restoration Cure."

Three options materialized in glowing, bloody font:

[Option 1: 70% permanent reduction in right-hand motor coordination.]

[Option 2: 15 years of your remaining natural lifespan.]

[Option 3: Immediate sacrifice of your left eyebrow's physical existence & complete inability to tell a lie for the next twenty-four hours.]

Reza’s mind raced, fueled by pure adrenaline. He had to think, and he had to think fast.

If I take Option One, his thoughts screamed, my right hand is ruined. I won't be able to hold a sword. If we get attacked, we're both dead anyway. If I take Option Two, fifteen years... I might drop dead in a year if my lifespan is already short from the mana poisoning. But Option Three...

He stared at the words. Sacrifice of your left eyebrow's physical existence. It was ridiculous. It was utterly absurd. And the inability to lie? It was a massive pain in the ass, especially in a world where secrets kept you alive. But it didn't physically cripple him. It didn't shorten his life. It was a humiliating, bizarre tax, but it left his fighting capabilities intact.

"Tick-tock, big brother," the AI chimed, a digital countdown timer appearing on the screen. 5... 4...

"Three! I choose Option Three!" Reza roared. "Just take it and fix her!"

"A custom deal! I love a man who can make a quick decision. Processing transaction..."

Instantly, a white-hot agony seared the left side of Reza’s face. It felt as though a branding iron had been pressed directly onto his brow, vaporizing the hair, the roots, and the very concept of hair follicles on that patch of skin. He screamed, clutching his face as a strange, numb sensation settled over his left eye. At the same moment, a cold, heavy weight slammed into his chest, wrapping around his vocal cords like an invisible, suffocating collar. He tried to curse, but his throat locked up, refusing to let the deceptive thought form into words.

Simultaneously, a brilliant, gold-flecked crimson light erupted from the red UI, bathing the entire cellar in a blinding glow. The light converged on Nara’s chest, sinking into her skin.

Almost immediately, her ragged breathing stopped. She gasped, her chest rising in one deep, clean breath. The gray, deathly pallor of her skin receded, replaced by a warm, healthy flush. Her eyes fluttered open, bright and clear.

"Reza...?" she murmured, sitting up slowly. She looked down at her hands, then up at her brother. Her jaw dropped. "What... what is that smell? And what the hell happened to your face?"

Reza let out a shaky breath, his hand still covering the left side of his forehead. "I had to save you. The Free System broke down."

"Yeah, but..." Nara pointed a trembling finger at his face. "Reza, half your face looks like a boiled egg. Did you shave your eyebrow off?"

Reza tried to say something cool, something reassuring like 'No, it’s just a scratch,' but his throat seized violently, choking him. The curse of the Usury System clamped down on his tongue. He gasped, forced to speak the absolute, unvarnished truth.

"No, I traded the physical existence of my left eyebrow and my ability to lie for the next twenty-four hours to a sketchy red loan shark system to buy you a miracle cure," Reza blurted out, his voice loud and entirely devoid of filter.

Nara blinked, her expression deadpan. "Are you serious?"

"Yes, I am completely serious and I feel incredibly stupid right now," Reza said, his face burning with embarrassment. "I can't stop myself from saying exactly what I'm thinking."

"Oh my god," Nara muttered, though a small, relieved smile tugged at the corner of her lips. "You really are an idiot."

But the moment of relief was violently short-lived.

The crimson UI didn't just fade away; it imploded with a high-frequency, glass-shattering shriek. The energy signature released by the transaction was massive, a localized spike of high-tier spiritual power that rippled outward through the damp earth, shattering the silence of the wasteland above.

Reza’s hair stood on end. The air pressure in the cellar dropped instantly.

"Oh, no," Reza whispered, his eyes widening. "The energy flare. It's too strong."

"Reza, what is that sound?" Nara asked, her voice tight with sudden fear.

High above them, the earth began to tremble. A low, rumbling vibration shook the stone walls of the cellar, sending cascades of dirt and pebbles raining down onto their heads. The sound of a distant, high-velocity whistling grew louder by the fraction of a second.

"Get down!" Reza screamed.

He lunged across the mattress, tackling Nara to the floor and shielding her body with his own just as the world erupted in fire and noise.

BOOM!

A deafening explosion shattered the ceiling of the cellar. The force of the blast tore through the subterranean chamber, a shockwave of heat, dust, and pulverized stone that sent Reza slamming into the far wall. His ears rang with a high-pitched, agonizing drone. The air became thick with gray smoke, choking and hot.

Reza coughed violently, his vision swimming with dark spots. Through the haze, he could see Nara coughing beside him, bruised but alive, protected by his body and the wreckage of the wooden support beams that had fallen at an angle.

The dust began to settle, illuminated by a shaft of bright, harsh daylight cutting down from the newly created crater in the ceiling.

Reza struggled to his knees, his muscles screaming in protest. He reached for his sword, his fingers wrapping around the hilt. His heart pounded in his ears. The high-tier energy signature of the Usury System had acted like a lighthouse in the dark, and the predators of the borderlands had lost no time in answering the call.

Through the gaping hole in the ceiling, the thick gray smoke parted.

First came the sound. A heavy, rhythmic, metallic clank.

Clank. Clank. Clank.

It was the unmistakable sound of enchanted steel-shod boots stepping onto the shattered rubble.

Reza held his breath, his eyes straining through the dust. A tall silhouette materialized in the opening. The figure wore the polished, dark-iron armor of the Eastern Kingdom’s elite scouting unit, a crimson cloak draped over one shoulder, singed but still bearing the crest of the dragon-hawk. A massive, heavy greatsword rested casually against the hunter's shoulder, its blade etched with glowing blue runes that hummed with cold, lethal energy.

The hunter stood at the edg

e of the crater, looking down into the ruined cellar. His eyes, cold and calculating, locked onto Reza and Nara.