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.

The cockpit of the Great Fox was dimly lit by the soft blue glow of the starfighter’s neural interface, the hum of its engines a distant lullaby. Moonlight filtered through the panoramic viewport, casting silver highlights across the sleek blue fur of the two lovers tangled in the pilot’s couch.

Krystal was already lost.

Her massive blue body strained the confines of the couch, every curve exaggerated into something almost cartoonish—breasts so huge and heavy they rested on the swell of her belly, nipples dark pink and stiff, leaking tiny beads of sweat that traced glistening paths down her fur. Her belly was already starting to balloon, the soft, sensitive skin stretched tight and round, the faint outline of her womb visible beneath it as if her body itself were trying to make room.

Fox knelt between her thighs, his fox ears flat with lust, his green eyes burning with that familiar smug confidence. His own cock—thicker than her wrist and far longer—had already buried itself to the hilt inside her, the swollen knot at its base pressing firmly against her stretched lips.

“Krystal… fuck, you’re so tight,” he growled, voice low and rough, the kind of rumble that vibrated straight into her core. “Even with this huge belly already forming, your pussy’s still gripping me like it never wants me to leave.”

Krystal’s head fell back, blue hair splayed across the couch like spilled ink. A broken moan tore from her throat, ears flicking in helpless ecstasy.

“F-Fox… ah—! It’s— it’s so much—! Your cock… it’s splitting me open… and I love it!” Her voice was breathy, desperate, the words tumbling out between gasps. “Deeper— please— I can feel every ridge, every vein— it’s hitting my womb so perfectly—!”

She reached down, claws digging into his shoulders, pulling him even closer. Her breasts bounced heavily with the motion, sweat flying from the stiff peaks.

Fox smirked, that cocky grin she’d fallen in love with a thousand missions ago. He started to thrust—slow, deep rolls of his hips at first, letting her feel every inch, then picking up speed until the wet, obscene sound of skin slapping skin filled the cockpit.

“Listen to that,” he taunted playfully, even as his breath hitched. “That’s the sound of my cum filling you up, Krystal. Every drop. Every single one.”

Each powerful thrust made her belly jiggle. Already a little swollen from the last load, it was growing rounder with every stroke. The head of his cock nudged against the thin wall of her womb, pressing just hard enough to send sparks of pleasure-pain through her.

“I-I’m close,” Krystal whimpered, voice cracking. “Fox— I’m gonna— ahh—!”

“Not yet,” he ordered, voice velvet over steel. He pulled back until only the fat head of his cock remained inside her, then slammed home again, driving the knot flush against her clit. “You’re going to come when I say, beautiful. And when I come inside you… you’re not going to be able to stop yourself.”

He bent down, mouth latching onto one of her engorged breasts, sucking hard. The nipple was like a pebble between his lips; Krystal cried out, back arching so violently her belly pressed against his chest.

“Fox—! Yes— suck them— I’m your fox, only yours— take everything—!”

The scent of her arousal was thick in the air—sweet, musky, intoxicating. The wet squelch of his cock sliding in and out of her soaked pussy was loud, filthy, rhythmic. Every thrust forced more of her juices to coat his shaft, dripping down to his balls and pooling on the couch beneath them.

Fox’s knot swelled further with every heartbeat, locking him inside her as the orgasm built. “That’s it,” he breathed against her nipple. “Feel that? That’s my knot swelling. It’s gonna lock us together while I flood you.”

Krystal’s eyes rolled back, tongue hanging out in a lewd, panting expression. “I- I can feel it— it’s so big— it’s pushing against my womb— Fox— I’m going to explode—!”

He finally let go.

“Cum for me, Krystal.”

The explosion was immediate.

Her pussy clamped down around him like a vice, milking his cock in rhythmic spasms. Her belly tightened, then suddenly— with a wet, squelching sound that echoed through the cockpit— her womb started to bulge outward. The skin stretched, shiny and taut, the first thick ropes of cum forcing their way past her stretched lips. A visible swell formed, pushing her belly higher, rounder, heavier.

“Fuuuuck—!” Krystal screamed, body convulsing. “It’s coming— your cum— it’s so hot— so thick— I can feel it pumping—!”

Thick, white ropes of Fox’s seed burst into her womb in heavy, powerful pulses. The first surge alone made her belly inflate visibly, the skin ballooning outward like a balloon being pumped. The second, third, and fourth jets followed in rapid succession, each one louder than the last, pushing her belly into a taut, drum-tight sphere. Cum overflowed instantly, gushing out around his knot in thick, creamy waterfalls, soaking the couch, her thighs, his fur.

“G-Gallons,” Fox groaned, voice breaking as he thrust shallowly, forcing more and more seed deeper. “That’s it, take every drop— every single one of my virile loads— I’m marking you inside and out—”

The orgasm seemed endless. Rope after thick rope of cum blasted into her, inflating her belly further and further until it was massive, bloated, and perfectly round. The skin was so tight it shone under the cockpit lights, veins faintly visible beneath the surface. A perfect, heart-shaped dome. Her pussy was a ruined, puffy mess, lips stretched wide, constantly spewing cum in frothy, obscene spurts that splattered onto the floor in a growing puddle.

Krystal’s mind was blank, pure sensation. Her breasts were still leaking, nipples aching, while her belly— now so swollen it rested on her lap— gurgled softly with the pressure of the gallons inside. She could feel the heat, the weight, the fullness. It was too much. It was perfect.

“Fox— I love you— I love your cum— fill me— breed me— make me yours—!” she babbled, voice hoarse, tears of overwhelming pleasure leaking from the corners of her eyes.

Fox pulled back just enough to look down at her ruined, cum-drenched form. His cock was still buried deep, knot locked tight, twitching as the last few spurts pumped into her. His balls were empty, but the sight of her— belly so bloated it was almost comically large, pussy gaping and squirting the last of his seed— pushed him over the edge again.

“Fuck— I’m gonna come again,” he snarled, voice raw. “Take it— all of it—!”

The second orgasm was even stronger. He slammed in as deep as his knot would allow and unloaded again— another massive wave of seed that forced her belly to stretch even more, the skin creaking audibly. Cum exploded outward in a fountain, splattering Fox’s chest and face as he groaned in release, hips bucking helplessly.

The cockpit filled with the wet, obscene sounds of creampie after creampie. The floor was now a lake of thick, pearly cum. Krystal’s belly was so full and round it looked like she was nine months pregnant with twins, if not more. Her breasts were swollen, heavy, and still leaking milk from how overstimulated they were.

When Fox finally collapsed, panting, cock still locked inside her, Krystal was a trembling, blissed-out mess. Her eyes were half-lidded, tongue lolling, a dopey smile on her face.

“Fox… I’ve never felt… so full…” she whispered, voice soft and dazed. “I can feel it in my womb… it’s so warm… so much of you… I’m going to be pregnant for days, aren’t I?”

Fox chuckled, nuzzling her swollen belly with a kiss. “Every day for the rest of our lives, beautiful. Because I’m never pulling out. I’m going to keep pumping you full until your belly’s permanently huge and my kids are growing inside this perfect, cum-inflated body of yours.”

Krystal moaned softly, rubbing her belly in lazy circles, feeling the gentle slosh of his seed inside. “Promise?”

“Promise,” he growled, already feeling his knot starting to swell again.

Outside the cockpit, the Great Fox continued its silent flight through the stars, the two lovers locked together in the aftermath of one of the most intense, virile orgasms either of them had ever experienced. Inside, the sound of gentle kissing and soft, satisfied moans filled the air, mixed with the faint, constant trickle of thick cum still dripping from Krystal’s wrecked pussy.

And somewhere deep inside her, Fox’s potent seed was already taking root, marking her with his claim— a promise of many more loads to come.

To be continued…