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The obsidian Vow

Matty07
28
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Chapter 1 - The Arithmetic of Betrayal

The air inside the Grand Hall of Valthorne Academy didn't just smell like ancient stone and expensive incense; it was, genuinely man, like the end of the world. Or, at the very least, the end of mine! For god sake....

I stood in the very last row of the assembly, tucked into the jagged shadow of a basalt pillar that felt as cold as a fresh grave. My boots—worn thin at the soles and held together by a prayer and a few strips of stolen leather twine—scuffed against the pristine, white marble floor. Around me, the "Elite" whispered in hushed tones of silk and velvet. They smelled of rare jasmine, aged brandy, and a casual, inherited arrogance that made my stomach churn. To them, this was a coronation. To those of us from the Gray District, the "scholarship zeros," this was the day we found out exactly how much our blood was worth on the open market.

"Perryn, stop fidgeting," Jaxith whispered beside me.

He didn't look nervous. Why would he be? Jaxith was built like a hero from the old tapestries that hung in the upper wings—his jawline was sharp enough to cut glass, his eyes were the color of a stormy sea, and he possessed a heart that I'd spent the last six years convincing myself belonged to me. We were the "Twin Zeros," the two orphans who had survived the Red Fever by huddling together in a single damp basement, sharing crusts of bread and dreams of something better. We had clawed our way into the most prestigious magical academy in the empire on sheer spite and borrowed textbooks.

"I'm not fidgeting," I lied, my fingers knotting together so tightly the knuckles turned white. "I'm vibrating. There's a difference."

Jaxith reached down, his hand sliding into mine. His skin was warm—a stark, grounding contrast to the drafty hall. "We made a pact, remember? No matter what the Resonance Stone says, we stick together. We graduate, we get our licenses, and we never look back at the District. You and me. Always."

"You and me," I repeated. The words felt like a shield, or maybe a blindfold.

At the front of the hall, the Proctor stood behind the Resonance Stone. It was a jagged, ugly hunk of obsidian that seemed to pull the very light out of the air, creating a shimmering distortion in the space around it. This was the "Arithmetic." The stone would measure your internal mana, calculate your soul's potential, and assign you a Rank. Rank A or S meant you were a god in training. Rank D meant you were a servant. Rank Zero? You were a battery. You spent your life plugged into the city's power grid, slowly being drained to keep the streetlamps burning and the Noble heaters running until your heart simply gave out from exhaustion.

"Jaxith Vance," the Proctor bellowed.

Jaxith squeezed my hand one last time—a sharp, anchoring pressure—and stepped forward. The hall went silent. Even the High-Caste students, the ones who usually spent their time mocking our thrift-store uniforms, leaned in. There was an aura about Jaxith. Everyone felt it. He moved with a grace that shouldn't belong to a boy who grew up eating rat-stew.

He reached the pedestal. He didn't hesitate. He laid his palm flat against the jagged obsidian.

For a heartbeat, nothing happened. Then, the hall didn't just light up; it exploded.

A pillar of pure, molten gold roared toward the vaulted ceiling. The sound wasn't magic—it was music. Violent, triumphant trumpets echoed in the rafters. The light coalesced, spinning into the shimmering, ethereal shape of a Great Lion that let out a silent roar before dissolving into sparks of pure energy.

The Proctor's jaw actually dropped. "Rank S," he whispered, his voice cracking through the amplification spell. "A Solar Paladin. By the Gods... we haven't seen an S-Rank from a non-noble lineage in fifty years."

The silence shattered into a roar of applause. Lysandrae, the daughter of the Arch-Duke, stood up in the front row. Her silver hair shimmered like moonlight on water, and her gown was made of spider-silk that cost more than a District block. She was already looking at Jaxith not as a person, but as a prize to be claimed.

I was screaming, my throat raw with pride. That's him! I wanted to yell. That's my Jaxith!

He turned around on the dais. I waited for his eyes to find mine in the shadows of the back row. I waited for the secret smile, the "we did it" look that we'd practiced a thousand times in our heads.

But Jaxith's gaze swept right over me. It didn't even pause. It was as if I had become part of the basalt pillar itself. His eyes locked onto Lysandrae. She stepped toward him, extending a hand clad in white lace. And Jaxith? The boy who had promised me the world while we shivered in the rain?

He took her hand. He bowed.

He didn't just accept the rank; he accepted the world that had spent eighteen years spitting on us. He walked off the stage toward the VIP seating, his back a broad, unreachable wall of gold and white. He didn't look back. Not once.

"Perryn Thorne."

The Proctor's voice snapped the air like a whip. My legs felt like they were made of wet sand. I stumbled forward, the sound of my own heartbeat thundering in my ears—thump-thump, thump-thump. It sounded like a funeral drum for a girl who hadn't died yet.

I walked past the rows of students. I saw Jaxith sitting next to Lysandrae. She was already whispering in his ear, her hand resting on his bicep with a possessive flick of her fingers. He was laughing. A genuine, easy laugh that I hadn't heard since we were children.

He had already forgotten the smell of the Gray District. He had already forgotten me.

I reached the stone. My hand was shaking so violently I had to use my other arm to steady it. The obsidian was humming, a low, predatory vibration that made my teeth ache and my skin crawl.

Please, I prayed to whatever gods were left in this hollow world. Just give me a D. Give me enough to stay. Don't leave me behind.

I touched the stone.

The chill was instant. It wasn't the warmth Jaxith had felt. It was a vacuum. It felt like a thousand tiny needles were plunging into my pores, searching for a reservoir of mana that wasn't there. The stone stayed dark. Not a flicker. Not a spark.

The crowd began to titter. "A true Zero," someone mocked from the front. "Look at her. She's literally empty. A hollow shell."

"Silence," the Proctor hissed, though his eyes held nothing but the cold pity of a man looking at a broken tool. "Perryn Thorne. Rank: Zero. Potential: Null. You will be assigned to the servant quarters for—"

He stopped.

The stone didn't glow, but it began to bleed. A thick, ink-black liquid started oozing from the cracks I hadn't noticed before. It didn't spill onto the floor; it crawled up my arm, staining my skin like a spreading bruise, cold and electric.

Then, a sound like glass shattering inside my skull made me gasp, forcing me to my knees.

[SYSTEM INITIALIZATION: SUCCESSFUL]

[USER: PERRYN THORNE]

[CURRENT CONDITION: EMOTIONAL TRAUMA (THRESHOLD REACHED)]

[ACTIVATING UNIQUE TRAIT: THE HEART-THIEF VOW]

The world froze. The Proctor was caught mid-blink. A bird was suspended in the air outside the stained-glass windows.

A screen flickered into existence, hovering inches from my nose. It wasn't golden or holy like Jaxith's light. It was a jagged, glitchy purple, like a bruise on the fabric of reality itself.

[NATURE OF THE VOW: You cannot generate your own mana. You must harvest it from the shattered expectations of those who once held your heart.]

[TARGET DETECTED: JAXITH VANCE]

[RELATIONSHIP: BONDED (12 YEARS)]

[CURRENT EMOTION TOWARD USER: INDIFFERENCE / RELIEF]

[WOULD YOU LIKE TO COMMENCE THE FIRST HARVEST?]

[WARNING: HARVESTING WILL PERMANENTLY ALTER THE TARGET'S PERCEPTION OF YOU.]

I looked over at Jaxith. In the frozen world, he looked like a statue of a god. But now, with the System's clarity, I saw the truth—the way he leaned away from the direction of the back rows, the way his posture was a deliberate rejection of our shared past. He wasn't just moving on. He was glad to be rid of the burden of me.

A hot, searing coal of rage ignited in my gut. It was the only warm thing in the entire hall.

He wants to be a hero? I thought, my eyes stinging with tears that I refused to let fall. Fine. Let him see what happens when the battery bites back.

Yes, I snarled in the silence of my own mind. Harvest it all.

[HARVEST COMMENCING...]

[EXTRACTION POINT: BOND OF LOYALTY]

[RESULT: 5,000 MANA POINTS ACQUIRED]

[NEW SKILL UNLOCKED: "GHOST OF THE COVENANT"]

The sound of the "Harvest" wasn't a sound at all—it was a subtraction. It felt like a string snapped deep inside my chest, the vibrations traveling up my throat until I tasted copper.

Time slammed back into motion with the violence of a physical blow.

The Proctor stumbled back, his boots squeaking against the marble as the black ink on my arm didn't just stay skin-deep—it sank into my veins, turning them into lines of liquid midnight. Across the room, Jaxith suddenly gasped. He clutched his chest, his fingers digging into the expensive white silk of his new uniform. His golden aura flickered like a dying candle in a draft, a momentary stutter in his perfection that made Lysandrae pull her hand back in alarm. He looked confused, blinking rapidly, his eyes searching the room as if he'd just forgotten a word he was about to say. Or a person he was about to love.

"Perryn?" the Proctor whispered, his voice trembling as he stared at the Resonance Stone. It was no longer obsidian. It had turned bone-white, drained of its soul, as brittle as a sun-bleached skeleton. "What... what did you do to the stone?"

"I did what the Arithmetic asked," I said. My voice sounded foreign to my own ears—steadier, colder, stripped of the tremor that had lived there since we entered the gates of Valthorne Academy. I pulled my hand away, and the stone cracked further, a spiderweb of fractures blooming under my touch. "I found my rank. It's just not on your chart."

I didn't wait for him to recover. I didn't wait for the guards to decide if I was a miracle or a malfunction. I turned my back on the dais and began the long walk down the center aisle.

The silence in the hall was absolute. Hundreds of Noble students watched me, their faces a blur of pale skin and expensive fabrics. As I passed Jaxith's row, I felt the System hum.

[PASSIVE ABILITY: SHADOW-SIPHON ACTIVE]

[CONVERTING LYSANDRAE'S DISGUST TO MANA...]

[+15 MP]

I didn't look at him. I knew if I did, the 5,000 points I'd just stolen wouldn't be enough to keep me from breaking. I kept my eyes on the heavy oak doors at the end of the hall. Every step felt lighter. The "Weight of Zero" was lifting, replaced by a dark, buzzing energy that made the air around me shimmer like heat-haze.

I pushed the doors open and stepped into the corridor, leaving the light of the Grand Hall behind.

The Shadow in the North Wing

I bypassed the servants' stairs. I was done with the "back way." I walked through the North Wing, where the architecture of Valthorne grew more aggressive—vaulted ceilings that looked like ribcages and tapestries that depicted the bloody history of the Sun Sovereigns.

"You're walking like a girl who just committed a murder," a voice drawled from the gloom.

I froze. The shadows near a suit of blackened plate armor seemed to detach themselves from the wall. Vane stepped forward. He wasn't like Jaxith. He didn't glow. He seemed to absorb the light around him, wearing it like a heavy, velvet cloak. His eyes weren't the stormy sea of a hero; they were the dying embers of a fire that had consumed everything it once touched.

"Maybe I did," I snapped, my hand instinctively going to my arm where the black veins were still pulsing with stolen power. "Are you the academy's guard dog, Prince Vane? Or do you just enjoy lurking in corners?"

Vane straightened, his movement fluid and predatory. He walked toward me, the air around him thickening until I could feel the pressure on my eardrums. "The guard dog? No. I'm the one who smells the rot. And you, little Zero... you smell like a god just died inside of you."

He stopped inches from me. He was tall, enough that I had to crane my neck, and he smelled like rain and old parchment. He reached out, his gloved fingers hovering just above the black marks on my skin. He didn't touch me—not yet—but I felt the "Heart-Thief" system scream in warning.

[WARNING: HIGH-LEVEL TARGET DETECTED]

[USER: VANE OSSUARY (RANK S+)]

[THREAT LEVEL: FATAL]

"That's a Forbidden Vow mark," Vane whispered, his voice dropping to a low, dangerous silk that vibrated in my chest. "Where did a gutter-rat like you find a System that eats its own history?"

"I didn't find it," I said, leaning in instead of pulling away. The rage from the hall hadn't cooled; it had just sharpened into a blade. "It found me. And if you're looking to turn me in to the Proctor, you better hope your shadows are faster than my spite."

Vane's lips curved into a slow, terrifying smirk. It wasn't a hero's smile. It was the smile of a man who had seen the bottom of the world and decided he liked the view. "Turn you in? Why would I do that? I've been looking for a weapon that doesn't care about the rules of the Sun."

He leaned closer, his breath warm against my ear. "Jaxith Vance just took the Sun's oath. He's the golden boy now. Which makes you the girl with the knife in her hand and nowhere to put it. I have a proposal, Perryn Thorne. One that ends with Valthorne at your feet and Jaxith begging for a drop of the power you're about to steal."

My breath hitched. "Why would you help me? You're a Prince. You're part of the world that calls me a Zero."

"Because," Vane said, his eyes flashing a vivid, hungry purple that matched the static of my System. "I hate the Sun. And I think you're going to be the eclipse."

The First Step into the Void

Vane didn't wait for an answer. He grabbed my wrist, and the world dissolved into a blur of gray and black. Shadow-stepping. It was a high-tier spell that usually made Zeros vomit or go blind from the sheer physical pressure of moving through a dimension not meant for human lungs. But as we moved through the void, my System didn't recoil. It feasted.

[PASSIVE ABILITY: SHADOW-SIPHON ACTIVE]

[CONVERTING INTER-DIMENSIONAL FRICTION TO MANA...]

[+100 MP]

We landed in a forgotten courtyard at the edge of the Valthorne cliffs. The sea roared below us, white-capped waves crashing against the jagged rocks like a beast trying to climb the walls. The salt spray stung my face, reminding me I was still alive.

"If you're going to use that Vow," Vane said, discarding his heavy coat and rolling up his sleeves to reveal arms covered in scars that looked like ancient, etched runes. "You need to understand the cost. You can't generate mana. You're a void. You have to take it. And taking it requires a 'Connection'."

"I already took it from Jaxith," I said, the bitter taste of betrayal rising in my mouth.

"That was a 'Severance Harvest'. It's easy to rip something out when it's already breaking," Vane explained, pacing around me like a wolf evaluating a new pack member. "But to grow truly powerful, you have to play the long game. You have to make people love you, fear you, or hate you. You have to feed on their intensity. The stronger the emotion, the higher the yield. You aren't just a student anymore, Perryn. You're a predator of hearts."

He stopped and looked at me, his expression unreadable. "Right now, you're a spark. I'm going to make you a wildfire. But first... show me you can handle the pain of being more than a Zero."

He raised a hand, and the shadows on the ground rose up like spears, their points sharpened to a molecular edge.

"Defend yourself, Zero. Or die here and save the world the trouble of watching you fail."

I didn't have a wand. I didn't have a shield. I just had the black ink under my skin and the memory of Jaxith's hand in Lysandrae's.

I am not a battery, I told myself, the words becoming a mantra that burned in my throat. I am the void.

As the shadow-spears lunged, I didn't jump back. I stepped forward, thrusting my hand into the dark.

[SKILL ACTIVATION: GHOST OF THE COVENANT]

[INTANGIBILITY GRANTED FOR 3 SECONDS]

The spears passed through my chest like harmless smoke. Vane's eyes widened for a split second—the first crack in his porcelain mask. I closed the distance before he could reset his stance, my palm slamming into his chest, right over his heart.

[ATTEMPTING HARVEST...]

[TARGET: VANE OSSUARY]

[EMOTION DETECTED: INTRIGUE / HUNGER]

[WARNING: TARGET POWER LEVEL TOO HIGH FOR FULL EXTRACTION]

[SIPHONING 50 MP...]

A shockwave of cold energy blasted us apart. I hit the stone floor hard, the air leaving my lungs in a violent rush. My hand felt like it had been dipped in liquid nitrogen.

Vane stood where he was, looking down at his chest. A small, dark smudge sat on his shirt where I'd touched him. He started to laugh—a dark, melodic sound that made the hair on my arms stand up.

"You tried to harvest me?" he asked, walking over and offering a hand.

I ignored it, pushing myself up despite the ache in my ribs. My knees were scraped and my vision was swimming with purple static, but the System screen was glowing with a satisfied, predatory light.

"I didn't try," I spat, wiping a smear of blood from my lip with the back of my hand. "I did. Fifty points. It's not much, but it's a start. And I'm just getting started, Prince."

Vane laughed again, his eyes burning with that terrifying, hungry light. "Fifty points from me is more than most Arch-Mages see in a lifetime. You've got teeth, little Zero. Now, let's see if we can make them sharp enough to bite the head off a Lion."