100x Rebate Sharing System: Retired Incubus Wants to Marry & Have Kids

Chapter 438: Chapter 437 - Taming the Wild Demoness

’[System Notification]’

’Evolution Stage 2: Initiated’

’Detected anomalous physiological mutation in host.’

’Tail nerve density: +340%. Cock potency upgrade: Active. Breeding instinct override: UNLOCKED.’

’Warning — Host losing voluntary control of demonic impulses.’

The moment the system pinged inside his skull, Viktor felt it.

Not a thought. Not a decision.

Something far more animal than that.

His cock — already buried hilt-deep inside her — ’pulsed’.

Once.

Twice.

Then it began to ’grow’.

Not violently. Not instantly. But like something waking up from inside a sheath of muscle and sin — swelling outward, pressing new walls into her that hadn’t existed a second ago. The girth widened along the entire shaft, ridges thickening until each one was a separate, identifiable pressure point scraping her drenched walls in slow, unavoidable increments.

Rihana felt it before she could name it.

Her breath hitched completely mid-exhale — not a moan, not a scream. Just air, punched out of her by pure anatomical shock.

’It’s... getting... what is that long thick thing doing—’

Her inner walls stretched.

Then stretched further.

Then ’further still’, her cervix kissed by something that now felt less like a cock and more like a warm, ridged column of demonic punishment — and her body had absolutely no choice but to spread for it, her tunnel forced to accommodate what it had no evolutionary framework to understand.

”I-It... h-hurts—”

She barely got the first syllable out.

Viktor’s tail ’moved’.

No warning. No hesitation. Not a single breath of mercy.

The tail — now thicker than her wrist, ridged and trembling with its own evolved nerve endings — curved behind her in the water, found the tight, untouched ring of her ass, and ’drove in.’

PAAAH!

”AAAIIIEEE~!!! AAANGHH~!! HNGH—!!!”

Ten inches. Straight in. One thrust. The tail didn’t ease. Didn’t coax. It simply ’inserted itself’ with the blunt, ruthless confidence of something that had decided it owned every opening on her body.

Her ass clenched around it like a fist and immediately began trying to expel it — which only made the ribbed ridges drag against her walls harder, every desperate clench pulling a new, involuntary ripple through her entire lower body.

’It’s inside— something’s inside my— both—’

Her mind fractured cleanly in two.

One half was screaming. The other half had gone entirely white and blank — both her holes stuffed completely full, her womb kissed from below, her ass split from behind — every nerve ending between her hips crossed and firing simultaneously, rewired by sheer overstimulation into something she had no word for.

Viktor grabbed both her wrists.

Didn’t ask. Didn’t warn.

He yanked them behind her back like reins, fingers wrapping her small wrists in one iron grip, and used them — ’used her arms’ — as a handle to drive her forward.

Her heavy breasts crashed into the stone edge of the pond.

PAH! PAH!

’Her nipples scraped the rough edge — both of them — and the drag of wet stone against already-swollen, already-leaking nipples made her spine arch so hard her back popped.’

”OOUNGHH~!! M-MY CHEST—!! HIIEEK~!!!”

He grabbed her hair with his free hand.

Not a gentle fist. A full, deliberate grip at the root — his fingers curling into the soaked mass at her scalp — and ’yanked her head back’ until her throat was exposed to the moonlit air and her back bowed like a strung bow.

Then he ’fucked her.’

PAH! PAH! PAH!

”HNGH~!! AAANGHH~!! OUNGH~!!!”

Both of them. Cock and tail. Moving in brutal, alternating rhythm — cock driving in as the tail pulled back, tail thrusting deep as his cock ground her cervix on the out-stroke — a double-penetration rhythm that felt engineered specifically to leave her no moment of relief, no pause, no fraction of a second where one of her holes wasn’t being ’destroyed.’

He felt it the moment the synchronization locked in. His cock and tail moving as one organism, two weapons of the same body, every thrust of one perfectly countered by the pull of the other.

’Two cocks. That’s what this is.’

The thought hit him like black lightning and his hips snapped harder on instinct.

PAH! PAH!

”Y-YOU’RE IN... B-BOTH—!! AAAHH~!! MASTER, IT’S T-TOO—!! OUNGHH~~!!!”

Her broken dialogue shattered mid-sentence every time his cock bottomed out, the word ”too” left hanging in the night air, unfinished, because her lungs had nothing left to complete it with.

She cried. Actual, streaming tears down her face — not performance, not exaggeration. Her body was simply overloaded past its capacity to process sensation without leaking out through her eyes.

He answered by slapping her ass — ’hard’ — the palm crack splitting the night like a whip.

PAH!

”HIIEEE~!!!”

The red handprint bloomed bright on her thick, pale cheek. He watched it form with complete satisfaction, then pulled back and slammed his cock in again, tail driving simultaneously, using her grip of wrists and hair to ’bounce her’ — her own body weight weaponized against her, gravity making his cock-head pierce deeper on every downstroke than strength alone could have managed.

’Womb. Right there. Every single thrust.’

Her nipples had begun to leak again.

Against the stone edge of the pond, smeared and dragging with every heave of her body — thin, white threads of milk against wet rock, her breasts too full and too abused to hold anything in anymore.

The sight of it unlocked something primal behind his ribs.

Viktor released her wrists.

She had maybe half a second to register the change before his hand came around her chest and ’grabbed her nipple’ — not cupped, not held. ’Grabbed’. Thumb and forefinger pinching down and ’pulling’ outward until the stretch of dark skin went taut and a fresh bead of milk welled up and dripped into the water below.

She screamed his title through a broken sob.

”M-MASTER~!! AAANGHH~!!! PLEASE—!! H-HURTS—!!!”

PAH! PAH! PAH!

”OUNGH~!! HIEKK~!!! HNGH~!!!”

[’System Notification’]

’Evolution Stage 2: Stabilizing’

’Energy Output: Rising’

’Sexual dominance feedback loop detected — physical exertion accelerating evolution, NOT depleting it.’

’Host is gaining power from the act itself.’

Viktor felt it in his blood. Every thrust that should have drained him was ’feeding him’ instead — the system’s evolution feeding off the very act of breeding her, his stamina regenerating faster than he could spend it, every thrust of his cock a pump of fuel directly into the engine of whatever he was becoming.

He wasn’t getting tired.

He was getting ’stronger.’

He pulled out of the water completely.

One arm hooked under her thick knee, the other gripping her hip — he ’lifted’ her. Out of the pond in one motion, her soaked body hauled into the air, water pouring off her curves in silver sheets, breasts swinging heavy and leaking, tail still buried in her ass as it came with her.

He hooked her leg over his shoulder. Shifted his grip. Lined his cock up from below.

And dropped her onto it.

PAAAH!

”AAAAHHHH~!!!”

’Gravity.’

Her own weight — that thick, heavy, stupidly soft body — drove his cock-head straight through her cervix on the first drop. The womb-punch drew a scream that went silent for a full two seconds before sound caught up with sensation.

’Something just—it just went inside—the long thick thing is inside my womb—’

Her thoughts dissolved into pure white animal sensation.

He bounced her.

Not thrust. Not pumped. ’Bounced.’ Her body lifted and dropped, lifted and dropped — using his thighs as a platform, her own gravity doing the work his hips usually would — and each time she fell back down onto him, the cock-head ’punched’ the same spot, relentless and exact, while his tail churned inside her ass in long, slow, vibrating strokes.

PAH! PAH!

”OUNGHH~!! HIIEEK~!! M-MASTERRR~!!!”