Lyssandra stood over the vast pool of cum, chest heaving as she recovered from the earth-shattering orgasm. Her cock throbbed visibly, the wide urethra pulsing with each beat of her heart.
Through the wide penis head, she could see the contractions of her own inner walls that had so recently propelled Luna outward.
"I told you," she hissed, her voice tight with residual pleasure and sharp anger, "never to enter me without express permission. Did you forget your promise already, bad pet?"
"I-I'm so sorry, Master!" Luna stammered, her form shrinking into a small, quivering blue sphere hovering nervously at the pool's edge. Her voice trembled. "I thought… while you weren't in your main body… I could… I didn't mean to… I'm sorry!"
She had assumed she could slip in and out unnoticed, but her timing couldn't have been worse. Caught red-handed, Luna knew she was in deep trouble.
"Bad pets," Lyssandra declared, her tone dangerously low, "get punished."
She waded forward through the thick, viscous fluid, ignoring the warm wetness that splashed up her legs. Reaching Luna, she plunged her hand into the slime's yielding body, unerringly finding her solid, pulsating core.
"Aahh! Master, please! Be gentle! My core is very sensitive!" Luna wailed, a mix of genuine pain and perverse arousal flaring through her as her most vulnerable part was gripped harshly.
"Silence!" Lyssandra snapped, clenching her fist tighter. "Who cares about a disobedient pet's comfort? Shut up and take your punishment!"
Luna sobbed openly, her liquid form trembling violently. "Ouch! Please, Master! I'm sorry! It won't happen again, I swear!"
The crushing pressure on her core sent waves of both agony and unwanted stimulation through her.
"You're damn right it won't," Lyssandra growled. "Now, stop sniveling. Assume the punishment position. Tubular form. Hollow on both ends."
"Y-yes, Master!" Luna cried, immediately transforming.
She elongated into a thick, blue cylinder, both ends open like hollow cups. Her form wobbled slightly as she floated before her mistress, waiting for the inevitable torment.
Lyssandra gripped Luna's tubular form and ruthlessly shoved the head of her enormous dick into one hollow end. The thick shaft forced the blue slime to stretch wide, but her elastic nature accommodated it, the rim tightening slightly around Lyssandra's girth.
"See?" Lyssandra grunted, beginning to thrust rhythmically, the slippery walls of the slime molding perfectly to her shape but not quite long enough to sheath her fully. "This is all you are. A pathetic, disposable onahole."
She slammed forward again, her cock plunging through Luna's length.
"A worthless fuck-tube, existing only to service my cock. You have no other purpose!"
Luna, despite the humiliation, felt a wave of shameful arousal surge through her core. "Y-yes, Master!" she gasped, her voice high-pitched and breathless. "Fuck me! Use your slutty onahole! Make me your personal cum-dumpster!"
Lyssandra sneered. "That's right, little slime whore. Your miserable existence is defined by this dick." She thrust harder. "Born to be fucked, born to be filled, born to be nothing but a warm, wet hole!"
"OH! Yes, Master! I'm your slutty cock-sleeve!" Luna cried, her form pulsing in time with Lyssandra's thrusts. "Ruin me! Break me! Use me until I'm just a shapeless mess!"
"You already are shapeless trash," Lyssandra hissed, her hips pistoning faster. "The only time you have form is when you're wrapped around my dick, you useless slut! Take it! Take what you were made for!"
"I will! I'll take everything! Fill me up! Oh yes!" Luna shrieked, her voice dissolving into mindless moans of perverted pleasure. "I was born for this cock! Born to be fucked senseless by you, Master! Don't stop!"
Lyssandra's face twisted in savage pleasure. "You're just a fucktoy, Luna. A squelchy, sticky fucktoy for me to violate whenever I want!" Her thrusts became brutal, relentless pounding as Luna's blue form rippled and stretched vulgarly, accepting every inch of punishment with rapturous, shameful joy.
The wet slapping sounds echoing loudly in the chamber. As her cock plunged deeper into Luna's elastic body, she felt the hard, unyielding presence of the slime's core pressing firmly against the sensitive underside of her shaft.
"Ahh… there you are, my little fucktoy's core," Lyssandra purred, a wicked smile spreading across her lips. She adjusted her angle slightly, grinding the thick ridge of her cockhead directly against Luna's core with each powerful stroke. "That's it. Massage me properly. This is the only purpose for that worthless little pebble."
The smooth, round core acted like a dedicated pleasure node, rolling and pressing rhythmically against Lyssandra's throbbing schlong with every thrust. It created a delicious, concentrated friction point that sent sparks of intense sensation shooting up her spine.
Luna whimpered, her form vibrating with the combined stimulation of being stretched by the massive girth and the direct, forceful grinding against her core. "A-ahhh, Master! Use my core! Grind me! Use me for your pleasure!" Her voice was thick with masochistic arousal.
"You have no choice, do you?" Lyssandra grunted, her hips moving faster, the core becoming a hot, slick focal point of pressure. "Trapped inside this useless tube, existing only to rub my penis. What a pitiful, glorious existence."
"Pitiful! Glorious!" Luna gasped, her core tingling with a strange mixture of pain and ecstasy. "Grind harder, Master! Rub your goddess cock on my core! It… it feels so… so right!"
The relentless grinding of Luna's core against Lyssandra's shaft combined with the tight, slick embrace of the slime tube drove her wild. Her breathing grew ragged, her hips bucking harder and faster.
The friction intensified, her dickhead flaring with every thrust, stretching Luna's form to its limits. Precum began to flow freely from her wide-open urethra, not a few drops, but a steady, thick stream. It poured out, coating the deep blue walls of the slime's interior with viscous, clear fluid, creating an lewdly wet sloshing sound with every powerful stroke.
Luna's body became even more lubricated, slicker, the sound of flesh pounding into liquid amplifying into wet slaps and gurgles.
"Almost… almost!" Lyssandra gasped, her entire body tensing. Her movements became frantic, erratic, her hips a blur of motion.
With a final, savage thrust that nearly split Luna in half, Lyssandra let out a guttural scream. "CUUUUMMMMMING!"
Her dick erupted. Not in a single stream, but in a volcanic explosion. Thick, hot jets of potent semen surged through her urethra and blasted out, filling the slime tube completely in a matter of seconds before overflowing.
The sheer force of the ejaculation sent a massive jet arcing high into the air, followed by pulsing torrents. The sticky white load splashed down, creating enormous, viscous ripples in the pool of cum below, adding to its already impressive volume.
Luna, overflowing and trembling, was drenched anew, her core vibrating with the aftershocks of her mistress's cataclysmic release. The pool churned with the impact, white waves sloshing against the edges, the scent of sex heavy in the humid air.
Lyssandra pulled her cock free, leaving Luna's tubular form flaccid and deflated, collapsing into the thick pool of cum. The slime trembled weakly, her blue substance dimming. Her core, previously a vibrant, pulsing blue, was now riddled with hairline cracks radiating from the center.
"I-im… I'm so… s-sorry, Master," Luna whispered, her voice barely audible, fragile as cracked glass. Her form shuddered. "I'm sorry… I'm sorry… I'm sorry…" She repeated the phrase like a broken record, a final, pathetic litany.
Lyssandra stared down at the dying slime, her expression utterly cold, devoid of remorse. Her eyes held only contempt. "You were nothing more than a worthless sleeve. Your life's sole purpose was fulfilled." Her voice was flat, dismissive.
The cracks in Luna's core deepened, branching out like a fractured spiderweb. A faint, high-pitched keening sound escaped her, a sound of final dissolution.
With a soft, almost inaudible pop, the core split cleanly in two. Instantly, the blue light in Luna's form extinguished, her gelatinous body losing all cohesion, melting into the vast sea of white semen around her. She was gone, dissolved completely, leaving only the slightest blue tint to a small patch of cum.
Lyssandra watched impassively for a moment before turning away, her cock still dripping. Luna's life, a pathetic existence of servitude, ended as it had been lived: utterly at her mistress's whim.
Yet, if the slime could have formed a final thought, perhaps it would have been a perverse pride in going out in a glorious, explosive blaze of lust and pain, consumed entirely by the goddess she worshipped.
The cum pool rippled silently, absorbing the last traces of Luna's essence. A single, large bubble rose from the spot where Luna's core had dissolved, breaking the viscous surface with a soft plop. Then another, and another. Soon, the area was fizzing with hundreds of tiny bubbles, rushing upwards as if something vast was stirring beneath the opaque white depths.
The bubbles grew more numerous and frantic, creating a frothy churning. Suddenly, a massive wave erupted, surging across the entire surface of the cum pool. It crashed against the edges of the chamber, sending thick, viscous splashes of semen flying through the air before subsiding with a heavy, wet slap.
In the center, where the wave had originated, a swirling vortex formed. It glowed with a soft, ethereal pink and white light that pulsed gently, like a heartbeat. The light coalesced into a distinct, shimmering halo hovering just above the churning liquid.
Lyssandra stood on the edge, arms folded beneath her enormous breasts, her smug smirk widening.
"About damn time," she muttered, her eyes reflecting the spectral glow.