I used NovelAI's unlimited gen membership for $25 a month. Note that "unlimited" is kind of a lie, it's only unlimited if you're under a certain resolution and only if you're not using any of the advanced features. Upscaling and other features cost the on-site currency, which the membership gets you 10000 a month. That should be more than enough for a month, but you can burn through it quickly since NAI gens so quickly.

I spent a bunch of Anlas using features like Character Reference, Vibe Transfer, larger resolution, upscaling and the Enhance img2img functionality. Ultimately most of that was wasted except for the Enhance feature. I definitely wouldn't recommend using the NAI Upscale, it's just a raw upscale and it costs extra when you can upscale for free locally or at like a dozen other places online.

The beach-house kitchen was a haze of spilled liquor, cigarette haze, and the low throb of music that had long since stopped mattering. Loona’s back was against the fridge, one boot propped boot heel hooked on the counter, phone dangling forgotten in her claws. She was pretending to scroll, pretending she wasn’t tracking the heavy footfalls that finally came through the sliding door.

Vortex stepped inside and the air changed. Heat rolled off him in waves: sun-baked fur, gun-oil, and that thick, animal musk that always made her thighs clench before her brain could veto it. The porch light silhouetted him perfectly, and there it was: the obscene, impossible bulge snaking down the left leg of his cargo pants like he’d stuffed a whole damn python in there. The fabric was stretched so tight she could see the ridge of the knot pressing against his thigh, pulsing faintly with his heartbeat.

Loona’s ears flattened. A hot, syrupy throb started low in her belly and spread outward like spilled honey. She swallowed once, hard.

“Sweet Satan’s dick, Tex, did you rob a horse stable on the way here?” she rasped, voice already cracking. “Tell me that’s a dildo and you’re just fucking with me.”

Vortex’s slow grin was all fang. He shut the door with a soft click that sounded too loud in the sudden quiet. “All natural, baby girl.”

He took one step, two, and the bulge shifted with him: heavy, obvious, the head so fat it dragged the seam of his pants downward. A dark spot of pre-cum had already soaked through at the tip. The scent hit her next: rich, salty, pure sex. Loona’s nostrils flared; her tail lashed hard enough to slap the cabinets.

She tried for her usual sneer. “You know how to use that thing, or is it just for show?”

Vortex closed the distance in a single stride, caging her against the fridge with one thick forearm braced beside her head. His voice dropped to a gravel growl that vibrated straight into her clit.

“Wanna find out?”

The words detonated inside her. Loona’s answer was a snarl as she lunged up, crashing her mouth into his, fangs clashing, tongues sliding hot and messy. Vortex growled back, hands dropping to her ass and hauling her up the fridge door until her legs locked around his waist. The monstrous cock wedged between them, grinding against her soaked shorts with every breath.

He ripped her top clean off; buttons pinged across the tile like gunfire. Cool air kissed her tits, then his hot mouth was on them: sucking, biting, tongue swirling around one pierced nipple until she keened. At the same time his claws shredded her shorts and panties in one violent yank. The scraps fluttered to the floor and suddenly there was nothing between her dripping cunt and the burning length of him.

Vortex dropped her ass onto the kitchen island hard enough that glassware rattled. He shoved her thighs apart until her knees hooked over his elbows, spreading her obscenely wide. Then he finally freed himself.

His cock slapped up against his abs with a wet, meaty thud. Loona’s breath left her lungs in a punched-out whine.

It was beyond colossal. A deep, angry red, slick with pre, veins like cables throbbing under the skin. The tapered head flared wide, already drooling in thick rivulets that splashed onto her belly. The shaft was easily as thick as her wrist (no, thicker), and the knot at the base was already the size of a softball and still swelling. The scent was overwhelming now: pure breeding musk, heavy and intoxicating.

Loona’s pussy clenched on nothing and squirted a helpless gush of slick down her thighs.

“Fuck,” she whispered, half prayer, half curse. “You’re gonna split me in half.”

Vortex dragged the blunt head through her folds once, twice, coating himself in her juices. “Gonna stuff you so full you feel me for a week,” he promised, voice ragged.

He started pushing in.

The stretch was immediate and merciless. The fat head forced her open inch by torturous inch, lips clinging to every ridge and vein. Loona’s head fell back against the cabinets with a thud, mouth gaping in a silent scream. It burned, it ached, it felt like he was rearranging her organs, and still her hips canted greedily for more.

Halfway in and she was already babbling. “You’re—ngh—splitting me open, I’m so fucking stretched it’s unreal, holy shit it hurts so good—”

Vortex snarled and slammed forward. The knot kissed her entrance and then, with a wet, filthy pop, it breached. Loona’s scream echoed off the tiles as her body locked down around him in violent, rolling spasms. Her first orgasm detonated without warning: cunt clamping, thighs shaking, vision whiting out. She squirted so hard it splashed his abs and ran in rivers off the island.

Vortex didn’t pause. He drew back until just the head remained, then drove in again, knot stretching her rim obscenely wide before sealing inside with another lewd pop. Over and over, brutal, relentless, the rhythm of a beast claiming his mate.

Loona lost count of her orgasms somewhere around the fourth. They blurred together into one long, shattering wave. Every thrust punched the air from her lungs and dragged the swollen head across her g-spot until her voice gave out and all she could do was scream brokenly.

“BIG—SO FUCKING BIG—TEX—YOU’RE SO FUCKING BIG—GONNA BREAK ME—FUCK—DON’T STOP—”

Her claws raked bloody furrows down his back. Her tail thrashed wildly, knocking bottles to the floor in crashes of glass and liquor. The kitchen reeked of sex, sweat, and the thick, creamy scent of her own endless release.

Vortex spun her suddenly, bending her over the island, cheek pressed to cold marble. He mounted her from behind like an animal, one massive hand fisting her tail to arch her back, the other pinning her wrists above her head. The new angle let him sink even deeper (impossibly deeper), until she swore she could feel him in her throat.

He fucked her like that for what felt like hours: long, grinding strokes that stirred his knot inside her, then short, vicious jabs that made her squeal and squirt again. Every time she thought she had nothing left, another orgasm ripped through her, stronger than the last, until she was sobbing, drooling, body jerking helplessly around the monstrous cock ruining her.

At some point he flipped her onto her back again, hooked her legs over his shoulders, and folded her nearly in half. The knot ground directly against her clit with every thrust and Loona shattered completely.

“TOO BIG—TOO MUCH—VORTEX—I’M—FUCK—I’M DYING—YOU'RE KILLING ME—SO GOOD—NEVER—NEVER THIS GOOD—”

Her voice cracked into a wail as the strongest orgasm yet seized her. Her cunt spasmed so hard the knot was nearly forced out, only to be slammed back in. Vision tunneled, ears ringing, every nerve on fire. She felt her belly distend visibly around the sheer size of him, the outline of his cock pressing up under her skin with each thrust.

Vortex’s rhythm finally stuttered. His thrusts turned savage, hips snapping with bruising force. The knot swelled impossibly larger, locking them together until movement was barely possible, just the obscene, wet grind of overfilled flesh.

“Gonna—fuck—gonna breed you so deep—” he roared.

“Do it,” Loona sobbed deliriously, nails digging into his ass to pull him deeper. “Breed me, knot me, mark me, fucking drown me in it!”

He came with a guttural howl that rattled the windows.

The first jet was scalding, thick as syrup, blasting straight into her womb with enough force to make her belly round further. Then another. And another. Gallons: endless, heavy pulses that overflowed instantly, creamy white cum gushing out around the knot in messy torrents, splattering the island, the floor, their thighs. The pressure kept building until Loona’s abdomen visibly swelled, skin stretched taut and shiny, sloshing with his load.
The sensation triggered one final, cataclysmic orgasm. Loona’s scream was silent this time, mouth open, eyes rolled back, body convulsing so hard her claws scored the marble. Pleasure so intense it edged into pain, then looped back into bliss again, wave after wave as he continued to pump her full.
When it finally ebbed, they stayed locked together, panting, cum still leaking in slow pulses. Vortex’s arms trembled as he carefully lowered himself to brace above her, nuzzling sweat-damp fur at her neck.

Loona’s voice was a hoarse croak. “I… can’t feel my fucking spine.”

He huffed a laugh, kissing the mark he’d left on her throat. “Told you I knew how to use it.”

She managed a shaky grin, reaching down to pat the taut, cum-swollen curve of her belly. “Next time… I’m riding. Gonna see if I can knot you instead.”

Vortex groaned, cock twitching inside her at the thought, sending another lazy spurt deep.

“Give me five minutes,” he rumbled. “Then you’re on.”

Loona laughed, breathless and utterly wrecked, and pulled him down into another messy kiss, tasting salt and sex and the promise of round two already stirring between them.