The Demon

Elias had always been curious about the old book.

It had been sitting in the back of the used bookstore for months, half-hidden behind stacks of dusty grimoires. The cover was black leather, worn and cracked, with strange symbols burned into it. No title. No author.

One rainy night, he finally bought it.

He told himself he was just curious. That he didn’t actually believe in any of it. But three nights later, alone in his apartment, he found himself drawing the summoning circle on his living room floor with chalk and blood from a small cut on his palm.

He read the words out loud.

Nothing happened at first.

Then the temperature in the room dropped sharply.

The candles he had lit flickered violently before going out completely. The shadows in the corners of the room seemed to stretch and twist.

And then he appeared.

The demon stood in the center of the circle, tall and beautiful in a terrifying way. Pale skin, long black hair, and eyes that burned like molten gold. Two small curved horns rose from his forehead, and a long, sinuous tail swayed behind him.

He looked at Elias like he was something delicious.

“Well, well,” the demon purred, voice like velvet and smoke. “It’s been a long time since someone was stupid enough to summon me.”

Elias took a shaky step back. “I— I didn’t think it would actually work.”

The demon stepped out of the circle like it wasn’t even there. He moved with unnatural grace, circling Elias slowly.

“My name is Vesper,” he said. “And you, little mortal, have just bound yourself to me.”

Elias’s heart was pounding. “What do you mean?”

Vesper stopped in front of him and reached out, trailing one sharp claw down Elias’s chest.

“You called me. You offered blood. Now you owe me a price.”

He leaned in close, lips brushing Elias’s ear.

“And I always collect.”

Before Elias could react, Vesper grabbed him by the throat and pushed him back against the wall. The demon’s body was solid and warm despite how cold the room had become. His tail wrapped around Elias’s waist, holding him in place.

Vesper kissed him — hard, demanding, almost violent. His tongue pushed into Elias’s mouth, and Elias tasted something sweet and dangerous. When Vesper finally pulled back, Elias was panting, lips swollen, cock already hard in his pants.

Vesper looked down and smirked.

“Already?” he teased. “Mortals are so easy.”

He ripped Elias’s shirt open with one sharp tug, buttons scattering across the floor. His claws dragged down Elias’s chest, leaving faint red lines that didn’t quite break the skin.

“I’m going to ruin you,” Vesper said calmly, like he was stating a fact. “I’m going to fuck you until you forget your own name. Until the only thing you can think about is my cock and how badly you need it.”

He spun Elias around and bent him over the back of the couch. With one sharp movement, he yanked Elias’s pants and underwear down to his thighs.

Vesper spat on his fingers and pushed two inside Elias without warning. Elias gasped at the sudden stretch, but Vesper didn’t give him time to adjust. He worked his fingers in and out roughly, scissoring them, curling them against that spot that made Elias’s legs shake.

When he finally pulled his fingers out, Elias heard the sound of fabric shifting. Then he felt something thick and hot press against his hole.

Vesper leaned over him, chest against his back.

“Beg for it,” he whispered.

Elias bit his lip, face burning.

“Please…”

“Please what?”

“Please fuck me.”

Vesper smiled against his neck.

“Good boy.”

He pushed in.

Elias cried out as the thick cock stretched him wide. Vesper was big — bigger than any human should be — and he didn’t stop until he was buried to the hilt. He stayed there for a moment, letting Elias feel how completely he was filled, then started fucking him with deep, powerful strokes.

Every thrust punched a moan out of Elias’s throat. Vesper fucked him like he was trying to break him — hard, relentless, almost brutal. One hand gripped Elias’s hip while the other wrapped around his throat, squeezing just enough to make his head spin.

“You feel even better than I imagined,” Vesper growled. “So tight. So warm. So human.”

He fucked Elias harder, the couch creaking under them. Elias could only take it, moaning and drooling onto the cushions as the demon used him.

Vesper suddenly pulled out and flipped Elias onto his back on the couch. He shoved back inside even deeper in this position, folding Elias nearly in half. His golden eyes glowed as he watched Elias’s face while he fucked him.

“I’m going to come inside you,” Vesper said, voice rough. “And then I’m going to keep fucking you until you come again. And again. Until you’re nothing but a mess.”

Elias came first — untouched, his cock pulsing as he came all over his own stomach with a broken cry. His hole clenched hard around Vesper’s cock.

Vesper groaned and buried himself deep, flooding Elias’s insides with thick, hot cum. It felt like too much — like he was being filled beyond capacity.

But Vesper didn’t pull out.

He stayed buried inside Elias, rolling his hips slowly while he caught his breath.

Then he smiled, sharp and wicked.

“I’m nowhere near done with you yet, little summoner.”

He started moving again.

And Elias realized, with a mix of fear and desperate want, that he was going to be here all night.