This video was genned using Sora 2 on Mind Video AI: https://www.mindvideo.ai/

You can get free accounts there with temporary emails, like: https://tempmailo.com/

With a free account you can do up to 4 basic video gens like this a day. Once you run out of attempts you can either wait a day or make another account with another temp email. The basic video gen is free, although all of the tools like on-site editing and upscaling and such cost on-site currency.

Luna’s workshop was bathed in the soft amber glow of a single hanging lamp, the kind that made everything feel intimate and secret. The air carried that distinctive warm vinyl scent—clean, slightly sweet, mingled with the faint coconut trace of the lubricant she’d rubbed along the valve earlier to ensure a perfect seal. Outside, the river murmured against the bank, a distant lullaby that only deepened the hush inside.

On the wide, padded table lay the dolphin pooltoy, still folded flat like a promise waiting to be kept. Its sky-blue surface gleamed softly, the molded grin frozen in perpetual invitation. Luna stood over it for a long moment, letting anticipation pool in her chest. Her sleek otter fur shimmered as she moved, whiskers quivering with the first thrill of what was to come.

She picked up the hose with deliberate care, fingers tracing the cool metal nozzle before guiding it gently—almost reverently—into the hidden valve beneath the tail flukes. A soft, satisfying click. Then the compressor woke with a low, steady hum, like a heartbeat beginning far away.

The first breath of air was delicate, almost shy. The folded vinyl sighed open, panels separating with the faintest whisper. Luna watched, transfixed, as the dolphin’s body began to awaken. The belly rounded first—a slow, sensual swell that lifted the center away from the table. The flanks filled next, seams smoothing as pressure coaxed them into perfect curves. She reached out and let her paw rest lightly on the warming surface, feeling the subtle thrum of air flowing beneath.

It was cool at first, but it drank her warmth greedily. Within moments the vinyl felt alive under her touch—smooth, supple, responding to every subtle shift of her fingers. She traced the emerging outline of the dorsal fin as it rose, tall and proud. The pectoral fins unfurled like wings, stretching wide as the chest plumped fuller and fuller.

Luna’s breath caught. She leaned closer, pressing her cheek to the gently curving belly. A soft creak rewarded her, low and delicious, as the toy settled into its first true shape. It was already beautiful—sleek, buoyant, inviting—but it was only the beginning.

She turned the dial a fraction higher.

Now the growth became a slow, deliberate dance. Air poured in with a richer hiss, and the dolphin responded eagerly. Its belly domed outward in a perfect, glossy arc, pushing against the edges of the table. The tail flukes spread wider, fanning luxuriously. Luna circled slowly, tail swaying in time with the compressor’s rhythm, eyes drinking in every new inch.

She couldn’t stay away for long. She returned to the swelling side and draped both arms around it, hugging gently. The vinyl creaked again—deeper this time, a resonant sound that vibrated through her chest. The toy pressed back against her, warm and firm, the pressure inside growing just enough to make every touch electric. She buried her face in the smooth curve, inhaling deeply. The scent was intoxicating: warm vinyl, faint coconut, the subtle ozone of expanding air.

“More,” she whispered against it, lips brushing the glossy surface. “I want to feel you grow.”

Another turn of the dial.

The dolphin surged. The hiss deepened into a steady song, and the toy ballooned outward in slow, powerful pulses. Its belly lifted higher, rounding into a magnificent sphere that overhung the table on both sides. The flanks widened dramatically, seams gleaming like silver threads under the lamp. Luna stepped back just enough to watch the transformation, heart pounding.

The snout lengthened subtly, the molded smile seeming to stretch even wider as internal pressure reshaped it. The dorsal fin towered now, proud and tall. Every inch of the toy shone—tight, flawless, impossibly smooth.

Luna returned, pressing her entire body against the vast swell of its side. The vinyl was drum-tight beneath her, warm from her touch and the endless flow of air. She could feel the faint vibration of the compressor traveling through it, a living pulse that matched the quickening beat of her own heart. She slid her paws slowly over the surface, tracing every curve, every taut seam, savoring the way it resisted and then yielded just slightly under her weight.

She hugged again, harder this time. The dolphin creaked luxuriously—a long, drawn-out sound that sent shivers racing down her spine. It was heavy now, so wonderfully heavy, yet still buoyant, still growing. Her arms could barely span a fraction of its circumference. She nuzzled deeper, losing herself in the endless warm expanse.

“Keep going,” she breathed, voice husky. “Don’t stop.”

She cranked the compressor higher still.

The room filled with the rich, insistent song of air rushing in. The dolphin answered with glorious abandon. Its body lifted entirely off the table, buoyed by sheer volume, hovering slightly as the belly swelled into an enormous, perfect globe. The tail flukes spread impossibly wide, the pectoral fins stretching like sails. Luna laughed—a soft, delighted sound—as the toy began to eclipse the light overhead, casting playful blue shadows across the walls.

She pressed herself fully against it now, chest to the vast curve, hips nestled into the warm vinyl. The surface creaked and groaned softly under her weight, a symphony of tension and expansion. Every breath she took pressed her deeper into its embrace; every exhale let it push gently back. She could feel the air moving inside it—slow, relentless, inexorable—making the whole massive form thrum against her fur.

Her paws roamed endlessly: over the towering dorsal fin, along the endless swell of the belly, down to where the tail flared wide and proud. Every touch was answered with a faint creak, a subtle shift, a promise of more. The toy was gigantic now, filling nearly half the room, yet still it grew—rounder, tighter, shinier—its surface reflecting the lamplight in rippling waves.

Luna lost track of time. There was only the warmth, the scent, the endless creaking song of expansion. She climbed partly onto the massive curve, straddling the swell of its back, letting her weight sink into the taut vinyl. It held her easily, buoyantly, cradling her as it continued to grow beneath her. She lay there, cheek pressed to the glossy dome, arms spread wide, feeling every new inch bloom against her body.

“Bigger,” she murmured again and again, voice barely above a whisper. “Just a little bigger… then a little more…”

The compressor sang on. The dolphin obeyed, swelling ever outward—vast, magnificent, overwhelming—until it dominated the entire space, a gleaming blue titan of air and vinyl and pure, sensual possibility.

Eventually the hiss softened and stopped. Silence settled, broken only by the occasional luxurious creak as the toy adjusted to its final, colossal size. Luna stayed draped across it, breathing slowly, fur flushed warm, utterly enveloped in the endless curves of her perfect, ever-growing dolphin.

She didn’t move for a long, long time.