Lily crossed her arms and fixed Mark with a sharp look across their kitchen table. "You want me to play incubator for your demon lord? For 666 days? That's not a favor, that's a full-time job with terrible benefits." Mark shifted, explaining how the entity had granted him every success he'd ever chased, and how this was the only way it could walk the mortal plane. She sighed, rolling her eyes but nodding once. "Fine. But if this thing kicks like a mule, you're handling the midnight cravings."
The ritual was quick and oddly clinical. Lily lay back, felt a sudden rush of heat low in her belly, and watched her stomach swell in seconds to the size of a six-month pregnancy. Something inside rolled, heavy and insistent. "Well, hello there," she muttered, pressing a hand to the taut skin. "You're not shy, are you?"
Over the following weeks the mass grew steadily, stretching her until she looked overdue with twins. Her hips widened, her ass rounded fuller, and her breasts swelled heavy and sensitive. The constant shifting inside turned discomfort into something hotter; each deep movement sent sparks straight to her core. She found herself wet and aching more often than not, the demon's restless presence making her unbearably horny.
One humid evening she caught Mark watching her with guilty eyes and decided enough was enough. "Stop treating me like fragile glass," she said, stepping close and cupping the massive curve of her belly. "This is your fault. I'm dripping, panting, and horny as hell from all this writhing. So get hard and fix it."
Mark swallowed, voice rough. "I didn't realize how big you'd get, or how much I'd love this huge, writhing belly on you." Lily smirked, already tugging at his belt. "Then prove it."
She sank to her knees first, taking his cock into her mouth for a slow, teasing blowjob while her swollen stomach pressed against his thighs. "It feels like it's moving deeper every time I suck you," she murmured around him, tongue swirling. "Makes my pussy clench and my ass ache." Mark groaned, hands gentle on her shoulders as she worked him until he came, thick cum spilling over her tongue.
They moved to the bed where he entered her from behind, one hand roaming the massive, shifting dome of her belly. The demon's movements inside her matched their rhythm, turning every thrust electric. Lily rode the edge, sweating and panting, demanding more until they both shattered. Afterward she traced lazy circles on her skin and whispered, "Six hundred and sixty-five days to go, lover. Think you can keep up?"
Want to know how it ends?
This is just the opening chapter. Continue the saga - or write a steamy tale starring you.