Celesia stepped out of the white pond onto the soft, black ground. Its surface gave in to her weight just a little as she stepped, and she stumbled a bit as her slime-covered feet sought purchase on its near-perfectly smooth surface. Her unfamiliar new proportions and her heavy new breasts weren't helping much, either. At the thought of her breasts her hands moved to caress them and enjoy their slime-soaked softness...
...and she promptly slipped and fell backwards, right back into the pond, with an enormous slimy slap. A wave lazily rolled out towards the pond's banks from her splash, stroking the smooth black edge like a lost lover and leaving a shiny strip of slime stain behind.
Celesia's back, legs, and ass all stung from the impact as she sank into the slime, its thick viscous warmth caressing her form. As her soft round ass came to rest on the bottom, she relaxed, stretching her arms out and letting her head submerge. It was such a warm and luxurious bath, and the sting all over her was awakening something delicious.
She imagined herself bending over in front of a line of uniformed soldiers, displaying her ass and pussy for them as they groped and slapped her all over. Her hands wandered over her slimy body as she daydreamed beneath the surface, one hand caressing a delightful breast as the other reached down to toy with her new clit and labia. She gingerly traced its slime-bathed lips and folds with her fingers. She moaned softly, letting out a bubble of air that sloshed toward the surface and let a bit of the pond slime into her mouth.
She hadn't noticed before, since her whole existence had been consumed by the enormous cock she'd been sucking, but the pond tasted like cum. Exactly like cum. The realization shot through her like a flash and she got up onto her knees to bring her head above the surface to take a look. Her head and face were completely drenched with slime, and she pulled her hair back with her hands before scooping more goo away from her face so she could see again. She licked her lips clean, and leaned forward to inhale a pungent, vaguely metallic scent. She trembled with excitement. Could it be?
Before she could say anything, she felt her Mistress speak within her mind. "You are in the Twilight Realm of Qu'um. All mortals whose souls have been stained by the solitary perversions of loneliness are connected to this place. As their innate light is consumed by lust and the deepening depravity of their benighted minds, their volume of sexual fluids decreases... because some of it is ending up here."
Celesia, lost in the dawning realization that she was bathing head to toe in the accumulated lifetime cum of some lonely pervert, was shaking with excitement. She worked her fingers around the hood of her swollen clit, shooting pleasure through her body from deep beneath the slime. She could barely form words, so extreme was her arousal. "This is... all... c-cum? Some random... filthy... pervert..."
"It's all yours, my pet. This is your spawning pool, and the sum total of your wasted mortal seed."
The pure filth of that realization hit Celesia like a freight train. She came explosively, convulsing as she frantically rubbed her clit. Her other hand grabbed for her nipple and pinched hard. Anything to bring extra sensation, and at the height of her bliss, she even started craving pain. She dropped her head forward as she convulsed, and her lips touched the surface. She kissed it and licked it and deeply inhaled its stench before plunging her face in and bringing up a full mouthful, letting it drool and ooze out over her face and chest as she lifted her head back and parted her lips.
"That's my good little whore. You truly belong here, and the depths of depravity you will sink to at my court will be truly delightful."
Celesia, however, was not listening. She had drooled an entire mouthful of cum all over her face and tits. Now she needed to lick them clean, and revel in their soft beauty. She was overwhelmed with the glorious filth that surrounded her, and could not get enough. Images of her former self filled her mind, a scrawny, pale body full of depraved rage and confused feelings. She wanted him. She wanted his wicked and desperate attempts at domination, just so she could help him cum. She needed it. She needed to help all the cocks she could... she knew what they needed so well... she'd studied it so... much...
Celesia came again now, to the image of her old self spraying her lips with his foul seed, wet and runny after hours and hours of perverted edging, which made her realize anew how completely immersed in that filth she was. Her whole body sang. Cum was her soul's purpose, and she had never imagined a pool of seed this magnificent.
In reverence to the depraved glory of this enormous pool of cum, she leaned forward, immersed her face, and swallowed a mouthful. She could feel it warming her as it flowed down, and as it hit her stomach, she felt the most wonderful little flare of satisfaction... and a rushing pang of hunger. She reached both arms out across the surface of the pond, lovingly pulling a wave of cum toward herself as if to hug it. She splashed the wave all over her face and breasts, caressing herself and indulging in its slimy sensations with a happy giggle. As it dripped down over her she sank lower onto her knees, relaxing a little into her buoyancy until her mouth was just below its surface.
A happy, eager light flashed through Celesia's sparkling violet eyes as her hands caressed her breasts beneath the slime. With a deep inhale of cum stench through her nose just above the surface, she began to drink.
First, a tentative mouthful. Gulp. Warm, delicious, soothing.
A bigger mouthful. Celesia shuddered a little at how good it felt. Gulp. She was so hungry. Gulp. She started to drink faster. Working herself into a rhythm. It was so good. She gulped and gulped, drinking deeply from the sinful bath that had spawned her.
"What a filthy cumslut you are," said Mistress. "You had everything you ever asked for as soon as you arrived here, yet still you submitted to me immediately as soon as the first cock was in sight. I didn't even need to tell you to swallow." Mistress chuckled as Celesia kept gulping greedily. "I didn't even need to find someone else's cock. You corrupted yourself for me the second you saw your own. A cumslut of your depravity has not been seen in a long, long time."
Suddenly Celesia shook, blinded by a deep purple flash that overwhelmed her with pleasure. It came in waves, again and again, and the center of her chest felt hot. After what seemed an eternity, it subsided and Mistress spoke again.
"I brand thee, Cumslut." the word hit like a jolt of pleasure, somehow resonating through the pool of cum Celesia bathed in, nearly pushing her over the edge into another shuddering orgasm. Her Mistress continued. "Your eager submission and gluttonous lust have revealed to me your Nameword."
Celesia, still mostly lost in her personal paradise, didn't really know what that meant. She was warm and felt incredible. She pulled another mouthful of the pond into her mouth and swallowed it down with a quiver of pleasure. Her hands compulsively explored her tight body beneath the pond, rapidly arriving at her overworked clit again.