Cover of Mana Drain

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In a world governed by RPG mechanics monsters are hunted by female monster slayers. The story revolves around an up-and-coming new monster slayer as she learns how to hunt monsters which involves letting them fuck and stretch out her holes until they let all the corruption in their bodies out through their cum.

Chapter 1: Virginity Sacrifice: The Three Trials of the Binding Chains

A damp chill clung to Lyra’s skin, deeper than the cavern’s cold. The air itself felt heavy, saturated with the sharp, mineral scent of ozone and an underlying, sickly-sweet musk that made the back of her throat tighten. It was the smell of corruption.Of them. Jagged, luminous veins of crystal pulsed within the obsidian walls, casting the vast training cavern in a rhythmic, unsettling glow. Thump… thump… thump. Like a captive heart.

“Eyes front, novice.”

Isolde’s voice cut through the hum, flat and uncompromising. She stood a few paces ahead, a silhouette of pure muscle and scar tissue etched against the bioluminescent light. Her short, black hair was a stark contrast to the eerie blue.

Lyra straightened her spine, forcing her hands to unclench from the leather straps of her training gear. “I am focused, Mentor.”

“No,” Isolde said without turning. “You’re terrified.Good. Fear keeps you alive out there. Sentiment gets you ripped in half.” She finally glanced back, her eyes dark hollows. “Forget everything the Academy taught you about honorable combat. This isn’t a duel. It’s consumption. You are the weapon, and these are the whetstones.”

She gestured with a calloused hand toward the center of the cavern. Chains, forged from Blessed Silver and etched with containment runes, anchored a writhing mass to the stone floor.

Lyra’s breath hitched.

It was a training construct, she knew that. Soul-forged from captured essence and given temporary, hated flesh. But knowing did nothing to calm the primal revulsion that swept through her. It had three torsos, fused at the base into a single, hulking lower body. Six powerful arms strained against the chains, clawed fingers scraping grooves into the rock. And from its crotch, three thick, serpentine appendages twitched and swayed, each tipped with a swollen, dripping crown. The smallest was as thick as her wrist. The largest… her stomach turned over. It was a grotesque mockery of the enemy. A Class C, at least.

“Its anatomy is a composite,” Isolde explained, her tone clinical. “The left head mimics a forest troll’s member. Tough, knotted, low sensitivity. The right, a swamp-dweller’s. Poison-tipped barbs, see them?Retractable. The center…” She paused. “Center is a scaled-down deep-drake projection. Spines along the shaft. Maximum stimulation, maximum damage.”

Lyra felt a cold sweat trace a path down her spine. “Its purpose is to… simulate?”

“Its purpose is to train you to choose,” Isolde snapped, finally turning fully to face her. The veteran’s face was a map of old violence, a thin scar pulling at the corner of her lip. “Out there, hesitation is a death sentence. You will learn which hole suits which threat before they choose for you. The body has limits. Strategy is knowing which limit to sacrifice.”

She walked toward the chained construct, which redoubled its struggles, a guttural roar echoing in the cavern. Isolde didn’t flinch. “The throat is a last resort. A half-measure. Useful only for distraction, or against the weakest F and G ranks. You can’t subdue anything with real mass that way. You’ll just choke and die. The real work is done here,” she slapped her own muscular thigh, “and here.” A hand on her lower back. “The vagina offers superior grip, more muscle control. It’s the primary channel for exertion, for drawing out the corruption and weakening the beast. The anus…” She met Lyra’s wide eyes. “Takes more preparation, but it’s resilient. It’s your shield. You use it for the bigger, rougher ones. The ones that would shred your cunt and leave you bleeding out in the dirt. You save your pussy for the finish.”

Lyra’s mouth was dry. The clinical terms, the brutal pragmatism, felt like a physical blow. This wasn’t the heroic fencing she’d imagined.

“I… understand the theory,” Lyra managed, her voice barely above the construct’s growls.

“Theory is shit.” Isolde closed the distance between them in two swift strides. She grabbed Lyra’s wrists, her grip like iron manacles. “Your mind understands. Your body is still a virgin to the truth. It needs to learn.”

She dragged Lyra forward, toward the twitching, dripping appendages. The musk was overpowering here, hot and animal. Lyra tried to pull back, a panicked noise escaping her throat.

“Stop fighting me,” Isolde snarled, tightening her hold. “This thing is chained. The real ones won’t be. Your first contact cannot be in the field.Now. Touch it.”

She forced Lyra’s trembling hands forward. The pulsing heat radiating from the closest member – the troll-like one – was shocking. The skin was like rough, pliable leather over solid, throbbing core. It twitched violently at her approach.

“Identify it!”

“T-troll variant!” Lyra stammered.

“Hole?”

Lyra’s mind went blank, panic a white noise in her ears.

“Hole, novice!”

“V-vagina?” Lyra guessed, her fingers an inch from making contact.

“Wrong.” Isolde shoved Lyra’s hands down, forcing her palms flat against the thick shaft. The roughness was immediate, the heat intense. “Low sensitivity.Tough. You’d exhaust yourself trying to milk it to completion with your cunt. You take this in the ass. Lets you work longer, use your other muscles to tire it.Feel it. Memorize the texture.”

Lyra’s skin crawled. She wanted to recoil, to vomit. But Isolde’s hands were implacable, moving her palms along the length, making her feel every ridge and knot.

The construct gave a particularly fierce lunge, its barbed appendage snapping forward. A droplet of viscous, pearlescent pre-seed landed on Lyra’s forearm. It was warm. Sticky. She flinched violently.

“Now the barbed one,” Isolde commanded, pulling her hands to the right. The spines were retracted now, but the tip was a slick, dark purple, oozing the same fluid. “Identify.”

“Swamp-dweller. Probable toxin.”

“Hole?”

Lyra’s training surfaced through the panic. “Never the vagina if toxins are suspected. Throat or anus.”

“Your throat would be sliced open by the barbs when they extend. Anus. Thick intestinal walls can isolate the poison, pass it with the seed. Feel the tip. Remember the slickness. The warning scent is always bitter.”

This time, Lyra managed to touch it without being forced, though her fingers shook. The skin was smoother, hotter. The warning bitterness Isolde mentioned cut through the general musk.

Isolde gave a curt, acknowledging grunt. Then she wrenched Lyra toward the center projection. The deep-drake proxy. It was easily the size of her forearm, a nightmarish club of muscle patterned with razor-sharp, bony spines along its length. It pulsed with a rhythm that felt predatory.

“And this?”

Lyra stared, a new kind of dread settling in her bones. “Deep-drake. S-spines for stimulation and… anchoring.”

“Hole?”

The answer felt insane. Obscene. “Vagina,” she whispered.

“Why?” Isolde’s voice was in her ear, relentless.

“Because…” Lyra swallowed, the lesson clicking into place with horrific clarity. “The spines require maximum internal manipulation to depress. The vaginal muscles are finer, more precise. You can work each ridge, control the stimulation. The anus… wouldn’t have the same control. It would just… tear.”

For the first time, Isolde’s expression shifted, something faintly resembling approval in her harsh eyes.“Correct. The drake’s pleasure is the key to its rapid exhaustion. It’s a risk. You let it cut you inside to tire it faster. Now, you will practice the initial engagement.”

Before Lyra could process the command, Isolde released her wrists and moved behind her. With shocking speed, she hooked a foot behind Lyra’s ankle and shoved her shoulder. Lyra stumbled forward, off-balance, directly into the space above the chained monstrosity. One of the six arms broke free of a weakened chain with a deafening snap and a coil of muscle wrapped around her thigh, yanking her down.

She screamed, hitting the slick stone floor on her knees, the breath knocked from her. The heat of the beast was all around her. The three members quested toward her, the drake’s spined projection leading, its tip glistening and nudging against the leather of her leggings.

Isolde stood over her, not helping. “It’s got your leg. Your choice is made for you. You have three seconds to present the correct hole or this simulation will end with a ruptured femur. Three.”

Lyra’s world narrowed to the pulsing, spined flesh before her. To the crushing grip on her leg. Terror was a sharp taste on her tongue.

“Two.”

Her training gear. She fumbled at the fastenings of her leggings with numb fingers.

“One.”

She tore the leather down over her hips, rolling partially onto her side, presenting herself. Not her virgin cunt, which clenched in sheer terror, but turning her body, offering the taut curve of her buttock. The anus. The shield.

The troll-like member, sensing the closest heat source, lunged. The thick, blunt head pressed against her, a insistent, burning pressure against the tight pucker of her anus.

“Breathe out and relax the ring!” Isolde barked. “It’s too big to force yet. You must allow it!”

Tears of shame and terror blurred the glowing crystals. Lyra squeezed her eyes shut, exhaled a shuddering breath, and forced her body to relent.

The thick crown breached her.

A ragged scream tore from her throat. It was an invasion of sheer, stretching fullness, a burn that devoured all other sensation. The rough leathery skin scraped her sensitive inner ring as the construct pushed forward, its girth forcing her open in a way she could never have conceived. It was too much. It was inside her.

She could feel every knot, every ridge, as it slid deeper, the creature’s roar vibrating through the shaft into her very core. The chains rattled furiously as it tried to thrust.

“Control it!” Isolde’s voice was a whip-crack. “Use your legs! Brace and rock! You’re taking its strength, not just lying there!”

Gasping, sobbing, Lyra planted her free foot. She pushed back against the invading pressure, creating a fraction of space, then allowed it forward again, establishing a brutal, ugly rhythm. The pain began to shift, mutate into a searing, full ache.A testimony. This was the work. This vile, degrading act was the first, real lesson.

The construct shuddered, its roar deepening. The other two appendages writhed uselessly nearby, denied their target.

Lyra opened her eyes, tears carving clean paths through the grime on her cheeks. She looked past the throbbing shaft impaling her, past her mentor’s unforgiving stance, to the pulsating crystal veins in the wall.

Thump… thump… thump.

Her own heart hammered against her ribs, slowly synchronizing not with the crystal’s light, but with the deep, relentless pulse of the monster inside her.

Her own heart hammered against her ribs, slowly synchronizing not with the crystal’s light, but with the deep, relentless pulse of the monster inside her.

The pain was a living thing. It carved a white-hot space within her, a brutal fullness that redefined her edges. Each ragged breath scraped against her throat. The construct’s arm tightened around her thigh, a constant, crushing reminder of her captivity. She could feel the rough texture of the troll-like member with devastating intimacy now—every knot, every ridge as it withdrew slightly and shoved back in.

“Good,” Isolde’s voice came, closer now. She was crouching beside her, a steady presence in the chaos. “You’ve accepted it. Now use it. Rock back. Harder.”

Lyra choked back a sob, obeyed. She pushed against the stone floor, dragging herself back along the shaft before yielding to its forward thrust. The motion was crude, animal. Each movement stoked the burning ache, but beneath the fire, something else flickered. A strain in the creature’s powerful limb. A slight lessening of its frantic tension. She was doing it. She was draining its strength, making it work, turning its own violent energy against it.

The realization was cold, clinical. A piece of knowledge slotting into place amidst the humiliation.

“It’s… tiring,” Lyra gasped, the words tasting of salt and iron.

“Everything tires,” Isolde said, her hand resting on Lyra’s trembling shoulder. Not a comfort. An anchor. “Even them. Your body is the prison. Your will is the lock. Feel for the change.”

Lyra focused past the agony, seeking the rhythm. Thrust. Yield. Thrust. Yield. The creature’s roars became less furious, more rhythmic, matching their brutal dance. The other two appendages had gone still, hanging uselessly. All its focus, all its corrupted essence, was pouring into the connection she had forced upon it.

With a final, guttural shudder that vibrated through Lyra’s bones, the construct seized. A flood of searing-hot fluid pumped into her, a violation so complete it left her dizzy. The arm around her leg went slack. The member inside her softened, slipping free with a wet, awful sound.

Lyra collapsed forward onto her hands, vomiting nothing but bile onto the slick stone. Her entire body shook violently, the cold cavern air biting at the sweat on her skin. She felt torn open. Hollowed out. Sticky warmth leaked down the inside of her thigh.

A waterskin appeared in her peripheral vision. Isolde held it out. “Drink. Slowly.”

Lyra took it with numb fingers, rinsed her mouth, spat, then gulped greedily. The water was frigid, shocking her system back into some semblance of order.

“Look at me,” Isolde commanded.

Lyra lifted her head. Her mentor’s face was unreadable in the pulsating light.

“You survived the lesson. Remember this feeling. This is the baseline.” Isolde’s eyes dropped to Lyra’s hip, where a simple silver charm, etched with minute runes, gleamed against her damp skin. “See this? It’s not decoration.”

With a rough hand, Isolde tapped the charm. A faint, cool sensation radiated from it, a subtle magic knitting through Lyra’s aching muscles. The raw, tearing feeling inside her softened to a deep, throbbing bruise.

“Blessed silver and blood-ink. The runes promote elasticity, accelerate healing, prevent catastrophic tearing.” Isolde’s voice was low, serious. “This, and the one on your navel for your womb, are the only reasons you’re not in the infirmary right now. But they have limits. They’re tuned to your current capacity. Push against a Class B, and these charms will shine like a beacon before they fracture. You’ll feel it—a warning burn. Ignore it, and you’ll rupture. You’ll bleed out internally before you can scream.”

She leaned in closer, her breath a warm ghost against Lyra’s ear. “The charms give you a fighting chance. They are not an invitation to be stupid. You hunt what your rank permits. You step up only when your body, and these,” she flicked the charm again, “tell you you’re ready. Understood?”

Lyra nodded, the movement feeling heavy. The magic in the charm was a tender, alien touch against the aftermath of the violation. A necessary shield in a war fought with flesh. “Understood.”

“Good.” Isolde stood, extending a hand. “Now get up. Clean yourself at the cistern. We’re done for today.”

Lyra took the hand, wincing as she got to her feet. The world tilted for a second. The training construct was already dissolving, its form melting back into shadow and a pool of shimmering, dark essence. Soon, nothing would remain but the chains and the smell.

She walked stiffly toward a small trickle of water coming from a carved channel in the wall. The physical ache was profound, but a colder clarity was settling in her mind. The horror wasn’t abstract anymore. It was a specific, brutal memory in her muscles and marrow. This was the price. This was the work.

As she rinsed the evidence from her skin, the charms hummed softly against her, a constant, fragile reminder of the line between survival and obliteration. She looked over at Isolde, who was checking the integrity of the silver chains.

“Tomorrow,” Lyra said, her voice surprisingly steady in the echoing cavern. “What do we train tomorrow?”

Isolde didn’t turn, but a faint, grim smile touched her scarred lip. “Tomorrow, novice, we work on your throat. The ‘half’ hole. You’ll learn to hate it even more.”

Lyra nodded, fastening her leggings with hands that no longer shook. The pulsating light of the crystals reflected in her green eyes, which were now harder, older. She had survived the first truth. She was ready for the next.

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