Sullivan was writhing, trying to escape from underneath Nikea's pulsating shaft. Something primal, maybe, that understood the danger he was in was still resisting. Silently cautioning him about his folly, she shifted one of her clawed feet and wrapped a pair of toes around the glans. She squeezed it. “Be still, my lovely pet,” the succubus moaned feeling the pressure building in balls, “...ahh so close, and I'll let you keep this wonderful and tasty cock.” Licking her lips, Nikea imagined it inside of her and pumping her womb full of delicious seed.
Responding to her desire, his manhood throbbed and strained against her toes' vice-like grip. Squealing in delight, the succubus eased the pressure. Beginning to move and caress his length, her eyes were alight with perversion as she watched it shape itself like clay beneath her touch. A slight twinge of jealousy kept her from adding more after it reached a thick and erect nine inches. Sullivan's mouth was opened in an 'O' as he let out a wheezing groan, spraying another rope of cum all over his crotch and his mistress' foot. She knew he'd like it. Nikea smirked and leaned over Sullivan, purring that he was a good pet.
But that was all she'd let him keep, both of his manliness and his humanity.
As impressive as his latest ejaculation had been, Nikea's twitching cock expelled a stream thick enough to coat his weakly twitching body in the sticky white substance. He didn't seem altogether there now, lips gaping with his tongue swirling the cum inside his mouth. The Succubus chest heaved, both from the pleasure and force but also how much of her energy she had drained. Humans were nothing like inert furniture. Running her fingers through her wild mane, she laughed. “Oh, yes! God, that felt...,” she couldn't finish the sentence, merely shaking her head before diving on him to sate her burning lust and hunger with a feral swiftness.
Only the smallest measure of self-restraint kept Nikea from plunging Sullivan's still erect cock deep inside of her, but she couldn't keep from rubbing her dripping and wet labia against it. The Succubus wailed and snarled with barely contained urges. Glistening pearls of her feminine juices ran down his shaft, its inherent corruption returning it to erectness. She had almost drained him dry, killing him. Nikea breathed, steadying herself. She also hadn't. The momentary urge had frightened her, but it was over now. Deciding to take things slow, her hands pressed against his cum-covered chest, cupping and massaging his budding, small breasts after tearing aside his shirt.
Elsewhere, the cum was being absorbed into Sullivan's obese body, cleaning away decades of wear and tear until it was smooth and blemish-free. It didn't last as a faint layer of fine fur rippled in waves across Sullivan, covering his skin with inky and lustrous darkness as the first of his bodily changes arrived. He was becoming thinner and noticeably smaller both in terms of breadth and height... especially breadth even as he lost a foot in his height. All of it only serving to bring more prominence to his cock. Years, too, were being shaved away, though those changes were not as noticeable with his fur covering.
Nikea tittered, feeling confident and in control of herself again. She watched as the rolls of flab and fat gave way to sculpted feminine curves and remembered how she had enjoyed becoming a woman, knowing Dan was feeling the same. Somewhere in there.
“Daniel isn't a very fitting name for a pet,” the succubus hummed and cocked her head as she brought a long-nailed finger to press against her lips. She searched his face for an answer. As she did Sullivan's furred face shifted. His eyes were becoming larger, slitted, with almost glowing green irises. His nose was already triangular and pushing slightly out into something between a human visage and an animalistic nozzle. Sharp fangs were lined beneath his onyx lips. Lastly, a pair of fuzzy ears poked out from the waves of silky dark hair that had replaced his baldness. “Hmm, Midnight. Do you like that, my kitten?”
After receiving no answer, Nikea leaned down to kiss her, sharing a sliver of her energy, and barely suppressed a laugh as she heard the sharp intake of breath as her pet realized she still had to breathe. Words spilled out of the newly christened Midnight's mouth, begging and incoherent. Her voice was soft and brittle, nothing like Dan's earlier gruffness. But, “Pets do not speak, Midnight. Not unless needed; I'll trust you to know when. Instead, mewl, meow, and hiss to earn my affection.” She watched Midnight swallow the last of the cum in her mouth, her eyes closing and facial muscles tensing as her given persona melted into place.
A deep purr spun and reverberated through Midnight's toned stomach and into her throat before passing her lips. “Meerooow~!” Electricity shot through Nikea's spine as she heard it and she sunk her incisors into her lower lip to hold back a shuddering moan. She was perfect. Nikea's kitten squirmed cutely underneath her, her cock rubbing up against the succubus' pussy. An obvious need was visible in her narrowing slits. “Mah-meow.” A furred tail snuck its way up her mistress inner thigh, caressing her scarlet skin in swaying motions. All Midnight missed was a collar... and perhaps a leash.
The succubus lowered her hips, feeling her leg muscles cramp and strain after expending so much energy. Midnight was similarly tired, but neither would let this opportunity go to waste. “Fill me up, Midnight,” Nikea commanded her eager pet as her labia spread to envelop her meaty rod. Her pussy was greedily convulsing and contracting around the lubricated glans, driving it deeper inside of her. After all the foreplay earlier, she desperately needed to cum. “Ah, ah... I never knew cock could feel this good!”
Her disbelief didn't stop her, however as she claimed every inch of her pet. Slowly gyrating and thrusting her hips, she felt the cock stirring her insides. Her pleasure was her pet's, so she didn't care about Midnight but selfishly focused on exploring her womanhood and the orgasmic pleasure it offered.
As things calmed down, Nikea spread herself out on her opulent sofa. Within moments, she was joined by a black house cat. The succubus languidly stretched out an arm, scratching underneath her pet's chin who purred in obvious contentedness from the attention she received. This more compact-form of Midnight certainly had its perks too. To prove her point, she moved her fingers over to her kitten's soft ears and scratched them next. Pure bliss. “Tomorrow, we'll buy you a bowl and litter box. Or would my lovely little pet prefer to pretend she is still human?” Nikea asked, cooing softly as she did.
Midnight turned her head away as if shyly blushing before slowly shaking her head, a strange set of gestures to see on cat. “C-can I get a tree and toys too? ...Please, mistress.” The Succubus considered the question, allowing this lapse in her pets persona.
“Mhmm, should be easier if you order them yourself. And I suppose the delivery guy could make a nice snack if I'm feeling hungry when they come by.” Almost before Nikea had finished answering, Midnight gave a happy purr and limberly rubbed her body against her mistress before jumping down the sofa in a single motion. Within moments the catgirl had returned to her anthro-form and paced away on her padded feet toward the computer, a sexy sway in lithe hips.