Wrote this at like 5am for a friend. It’s extremely rough around the edges but no harm letting it loose out there.
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The smoke cleared. Inside the circle stood a figure: the form of a copper-haired woman with an air as beautiful as it was menacing. The vanishing haze revealed a full body with red-tinted skin and a forked tail. The slightest of horns poked through her hair.
The apprentice began to panic. The summoning was never meant to actually complete and he’d not set up the runes to send the creature back. For his own safety he would have to bind it while he prepared its banishment. Fumbling for words he got halfway through his spell when the demon’s head turned and her eyes flashed red. With unnatural speed, she crossed the room and loomed over him, wearing an unreadable expression. The apprentice opened his mouth to speak and was cut short by the demon’s tail coiling around his throat.
“Can you send me home, little dust-spawn?” She asked, baring her teeth.
The apprentice gasped, clutching the tail, and managed a nod.
“Can you do it now?”
He paused. It would not do to lie to a creature that could kill him in a heartbeat. He shook his head.
“Well then.” She waved her hand and the young mage’s clothes instantly incinerated as the tail uncoiled. “Perhaps you can entertain me…”
She gave him a shove, sending the young man sprawling in a cloud of ash. He took a sharp breath and particles of what were once his clothes were sucked through his nostrils. He started sneezing, his attempts to stabilise himself or cover his face only sending up more ash and worsening his condition.
“How feeble…” he heard her say, before a clawed hand hit his throat, forcing him prone. The apprentice reopened his bleary eyes to see the demon lowering herself down over him, legs either side of his head. He could do nothing but stifle a sneeze as she sat on his chest, legs spread wide open. “Now make yourself useful,” she said as she thrust her lips to meet his.
Source: reddit.com/r/eroticliterature/comments/6hj6uf/mf_succ_i_guessthe_magicians_folly