Note: This story contains femdom, light bondage, magical cock growth, squirting, and some mild cum inflation. Turn around if that isn't your thing.
~*~
"Humans are such fun little playthings," Azaerith thought as she gazed upon the nervous-looking man who had summoned her. She would never tire of these curious, lustful beings who sought after the otherworldly pleasures she provided. They were all so cute, and their arousal was irresistibly delicious. Be they men, women, or something in between, their sexual energy always made for a good meal.
"Uh, hi," the man said, his eyes roving over every inch of Azaerith's already naked form.
She slowly swished her tail behind her ankles. "And hello to you, gorgeous. You got a name?"
"Jacob." He was already giving off a delectable aroma; the heady muskiness of masculine desire. This was going to be a good one.
Azaerith stepped forwards, standing tall before him. "I'm Azaerith the Salacious," she said. "'Azzy' if you wanna be cute about it."
Succubi and incubi were slightly larger than humans, so Jacob was at the perfect height to bury his face in her generous chest if he wanted to. She thought he might, given that he couldn't take his eyes off of her breasts.
"Looking for something a little different tonight, Jake?" Azaerith purred, reaching out with her four arms and slowly working apart the buttons on the flannel he was wearing with her lower set of hands. The other two found his shoulder and chin respectively. She tilted his head up.
Jacob gulped, finally meeting her eyes. "Yeah...if you don't mind."
"It's what I live for, hon."
She bent a little at the waist and caught his mouth in a deep kiss, letting her long forked tongue rove over his. When she pulled back, the man looked way too blissed out after just a kiss. "Adorable," she thought.
Azaerith helped him out of his shirt and crouched to work on his belt.
"I—uh," Jacob began, swallowing. "I've heard about the...venom you guys have."
The succubus' pointed ears twitched. "Interested?"
"Yes. Very."
"Good. Because this is hardly any fun without it."
It made for a better meal too, but she didn't say that aloud. The more times a human could cum for her, the better.
After Jacob's pants hit the floor, Azaerith curled her fingers into the waistband of his boxers, slowly stripping them down his thighs and releasing his half-hard cock. The man was fairly well-endowed already without the use of her venom. She stood, trailing her hands up his sides as she went, making him shiver.
Their mouths met again, hands roving a squeezing whatever flesh they could find. Azaerith forced him to step backwards until the backs of his knees met the bed, sending them both crashing down onto it.
Jacob rolled them until their places changed. He hovered over her for a moment before finally giving in to his need to get his hands and mouth on her tits. They almost dwarfed his palms. His lips caressed her light purple flesh, sucking one of her nipples into his mouth as he thumbed the other. His tongue rolled and teased the hardening bud.
Azaerith moaned, her legs spreading involuntarily as as the beginnings of pleasure sent a pulse through her loins. She wasn't about to let the human take her like this before she could get the good stuff into him, but she let him indulge in her body for a moment. Let him kiss, suck, and fondle whatever he pleased. Her patience quickly wore out though, and she pulled his head away from her. He gave her a questioning look, clearly wondering if he had done something wrong.
"Let's get you situated before things go too far, huh?" she suggested, still slightly breathless from Jacob's attentions.
"Oh, right," he said sheepishly, staring at her breasts. "I got distracted."
"Yeah, they do that to people."
Jacob shifted off of her, taking a seat next to the succubus. She sidled up behind him, her legs on either side of his and pulling him close.
Azaerith let her fangs sink deep into the juncture between Jacob's shoulder and neck, allowing her potent venom to enter his veins. He winced and hissed at the initial bite, and she chuckled darkly against his flesh. She drew away after a time, breathing hot against his neck, laving her tongue over the wound and sucking the skin around it. His blood was an absolute treat.
Jacob moaned. "I-I can feel it already."
His skin flushed hotter and his heart beat in an excited rhythm under Azaerith's palm. She would get it going faster though. Her hands roamed over his chest.
The succubus rested her head on Jacob's shoulder, her eyes trained on his already impressive erection.
"Going straight to your dick, right?"
Jacob only nodded in response, trembling and swallowing audibly.
The effects of Azaerith's venom never ceased to excite her, so she watched with rapt attention as it took hold. Jacob's cock began to fill out even more, expanding in length and girth. It throbbed visibly, growing on the more intense pulses. Its owner let out broken moans each time. The veins popped up from the skin, and Azaerith could see the movement of blood pumping through them.
By the time her venom had fully worked its magic, Jacob's dick was a massive twelve inches, his sack lying enlarged and heavy upon the mattress. He looked to his new, unfortunately temporary, endowment.
"Fuck, I'm huge," he said in between breaths, his hands twitching like he wanted to reach down and stroke himself silly. "You—you made me so big."
The demon licked her lips as precum ran in streams down the swollen shaft. Her pussy was positively dripping at the sight of it, but she wanted to have a bit of fun with the human before she let him fuck her. She could see his desires—he wanted the same thing.
Azaerith pushed him down onto the bed. Taking his wrists, she crossed them and lifted his arms above his head to rest against the pillows.
"Keep those there for me," she said. He nodded. "Good boy."
