(Contains, throughout all parts: demons, gender transformation, anal sex, lesbian sex, furries, fantastic anatomy, and near-exclusive non-con.)
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It was a dreary day, as it so often was within the realm of the demon king, portentous clouds swirling overhead, promising eventual soured rainfall. He looked up from his desk, strewn with papers which all required signature or action, and out the window across the expansive thorny badlands comprising his domain to the west. Vast boredom settled in his mind as he searched his memory to scratch up the most recent glimpse of glory, and came up short for a satisfying example. Post the fall of the previous king, prophesied victory against ancestral enemies denied yet again, there had been no righteous campaign. Though he continued to receive missives from the so-called front lines off the opposite shore, where his armies had crumbled to raiding parties, admittedly fearsome in their own right.
Avlakoi shrugged massive shoulders, rolled his neck and narrowly avoided scraping his horns across the already gouged head of his chair. Cresting eight feet, he'd never felt comfortable in this forsaken castle, having to bend over to get through most passages, to keep this bend so that his horns wouldn't scrape up some of the lower ceilings. The original owner hadn't been a physically impressive specimen. A body like Avlakoi's wasn't meant to arch over a desk, poring over the details of logistics for hours to ensure only a permissible amount of embezzlement took place; they were almost all demons themselves under his rule after all, one felt entitled in return for their meagre loyalty. No, a body like his was made to be on the field of battle, striking terror into the opposing force until they were routed and his men could roll over the field spearing the fallen.
But then, the psyche within disagreed with the blood.
While Avlakoi pondered, not coincidentally avoiding his work, Kaffe entered his office without trouble, as she was somewhat short even for a typical succubus. This svelte demoness set yet another sheaf of papers on his desk and waved for some assorted servants to carry in a few chests; third dynasty pattern, or else someone had loved the fanged skull aesthetic that had once been a historical demon lord's death mask and appropriated the design.
She curtsied. "Spoils, sire, from a recent excursion into previously conquered lands laid fallow. I will note some interesting specimens." Kaffe waved a hand and the motley servants departed.
A result of a union with a certain succubus and a visiting dignitary, this particular demoness might have been mistaken for human, if the red, slit eyes, the fangs, and the barb-tipped tail were missed, her wings currently hidden, folded into another dimension as some could do. She wore her straight, blonde hair as a tail and maintained the lovely, earthy tone of her skin with disguised pride.
That she was so comparatively small and lacking in horn and claw might have meant trouble for her in the past, but-
"Magical apparatus from the third dynasty back?" Avlakoi asked, earning a raised brow of recognition.
"Fourth, in point of fact, sire, older by a few hundred years," Kaffe said, digging out one such piece. With a few gestures she'd applied a specialized identification spell on the thing: essentially a jeweled rod, as the demons of old were not known for the subtlety in craftsmanship that their much more ancient ancestors possessed. "Yes, fourth, or else the mage who created this piece was incompetent. This one merely carries a spell to heat the metal rod a great deal, and reinforce it against melting; I can imagine it being used to heat a stew pot when a scouting party cannot allow themselves to be discovered by smoke. Of course, that is only my first thought, and they used far too many rubies for such a simple effect."
Avlakoi took the small thing in his hand and pried a ruby free with a pair of claw tips. "You could do it with one, I imagine."
She stared meaningfully at it as the light of her spell circle dissipated, then laughed haughtily. "One? I could do this with a runic inscription. In any case, I would have my magicians study each piece before any one is scrapped for materials. Some call for more detailed analysis and should not be played with."
The mild reproach in her voice was designed not to offend, and Avlakoi took none.
He nodded despite the jewel already playing with the light in his palm. They both knew he would go along with his own court mage's decision, but it wasn't her decision to make and this show of the fact was important to demonic pride. She then bent to rummage through the chests for another conversation piece. Below her short cape, she wore a long-sleeved shirt and vest, then a skirt which ended halfway down her thighs, her tail emerging underneath the short tail of her vest with a convenient hole. Then, stockings which left a small gap with the hem of her skirt as she walked. Bent over like this, the hem rose enough for a luscious view of exposed thigh.
And he was the demon king, after all. There were expectations to consider. His blood was boiling with that expectation of him. One couldn't fight his own nature forever, and this woman could take it... was one of the few he knew could...
Avlakoi came around his desk and Kaffe was in the shadow of his massive body only a moment before he seized her waist in one hand and hauled her up, roughly placed her face down atop his pile of insipid paperwork. She yelped as he flipped up her skirt and tore away her flimsy underclothes, giving access to a dark, shaven cunt and anus winking with anticipation.
Trembling at the thought of what would come, Kaffe said, "Do as you please, sire. My body is yours to command..."
Of course she would assent, he was the demon lord; all the pleasure in this world was his by right... His grip loosened, yet she stayed beneath, presenting her peachy ass of her own volition, spread her cheeks with her thin fingers, making herself a vessel for his pleasure. Avlakoi merely pulled aside the fold in his wrap, his immense cock thundering to attention, furiously red and steaming, lined on either side with firm draconic ridges of scale. He slapped it between Kaffe's ass cheeks, let her feel his weight, his girth, laughed under his breath at the poorly-hidden terror she felt by instinct in the presence of his greatness.
"Girl," he growled, slapping her back again with his throbbing meat, precum already dribbling from the tip and damping her shirt, "do you believe your body remembers my shape? Shall I remind it?"
He placed the pointed tip of his massive cock against her hole and the first few inches pierced her right away. Already her forehead was bent to the desk, a low, enduring moan escaping her lips between hurried breaths, trying to stay cries of pain.