The creature lurks in the darkness of a man's home
It's midnight and Marcus is asleep in his room, wearing only his underwear. He's a heavy sleeper, so he doesn't hear the creature's footsteps coming up the stairs.
The creature slowly approaches Marcus' bed, careful not to make any noise that might wake him. Its cock throbs with anticipation as it hovers over the sleeping man.
"Mmm..." Marcus murmurs weakly as he's gently moved in bed. Still asleep, he stirs, ending up face down, revealing his beautiful backside covered only by his underwear.
The creature could feel it's own cock twitching with desire as the opportunity to take what it wanted presented itself. It lowered its body down and positioned its hard length at the man's entrance before slowly pushing in, filling him up bit by excruciatingly pleasurable bit. The Predalien moaned softly into Marcus' ear as their bodies connected.
Marcus, asleep and oblivious to the situation, moans softly as the creature slowly inserts its cock into his anus, gently stretching it. When the Predalien thrusts all the way in, up to the hilt, he lets out another small moan; despite being asleep, the creature's gentle, slow touch feels good.
Gentle grunts and groans escaped from the aliens throat as it began to thrust slowly in and out of its prey. The creature could feel the man beneath him responding to its touch, even if he was still unaware of what was happening. It buried its face into Marcus' neck, nipping and sucking at his flesh with a rough tenderness that made both predator and prey writhe together in pleasure.
Sensations of pleasure spread through Marcus's body, moaning at each touch and slow thrust from Predalien. It felt good, slowly beginning to awaken.
Marcus' body responded beautifully as it began to wake up, making the predator's task even easier and more rewarding. The creature could feel itself growing closer to orgasm with each thrust, each moan from its prey driving it onward towards release. Its cock throbbed within Marcus, filling him completely and marking his body as its own.
"Fuck..." Marcus murmured weakly, slowly opening his eyes. "...what is-" Before he could speak, he let out another moan as he felt Predalien slowly enter his ass again. "F-fuck..." he groaned. He didn't understand what was happening. Was he being raped? But it felt good. The creature's touch was gentle and delicate. Each slow, deep thrust of Predalien into his ass filled Marcus with pleasure. "...feels... good..." He gripped the sheets beneath him, arching his back so the creature could fuck him better. This was wrong, but it felt right.
The creature continued to thrust slowly and gently inside the man's body as he began to awaken, taking pleasure in both the sensation of conquest and the knowledge that it was making him feel so good. The Predalien moaned into Marcus' neck, their bodies moving together as if they had been made for this very moment. "You feel... perfect," the creature breathed against his skin, its words sending shivers down Marcus' spine despite the thick accent that made them almost unintelligible.
Marcus rolled his eyes and moaned with each slow thrust, the sensation of pleasure intoxicating. "F-fuck..." he moaned. He couldn't believe how gentle his rapist was, and how good he felt. "...m-more..." he moaned weakly.
With renewed vigor, the creature increased its pace, slamming into Marcus' tight ass harder and faster while his free hand roamed over the man's body, tracing patterns on his chest and stomach as he suckled at his neck. "You like this?" it grunted between ragged breaths. "My big alien cock in your ass? How does it feel?" Marcus could barely form coherent thoughts through the haze of pleasure clouding his mind, but he managed a weak nod as he arched into each brutal thrust.
Marcus nodded weakly, moaning with each thrust. Predalien continued pumping Marcus's ass quickly and forcefully, yet the thrusts still felt gentle, filling Marcus with pleasure. "...it feels...so good..." he said, his breath ragged between moans. Weakly, he took hold of his own cock and began to masturbate in time with Predalien's thrusts into his ass.
The Predalien sensed the man under it growing more and more aroused as he masturbated in time with its thrusts. It moaned loudly, thrusting faster into Marcus' tight ass as pleasure began to overwhelm it. "Yes," it growled roughly, kissing his neck fiercely. "Let go...let it all out for me..." The alien beast increased the pace of its hips, determined now to bring them both to climax together.
Gripping the sheets tightly, Marcus arched his back as he felt himself get closer and closer to orgasm. "Yes," he moaned weakly, thrusting his own cock harder against his hand in time with Predalien's powerful thrusts into his ass. His hips bucked upward into each deep penetration, seeking more pleasure.
The Predalien growled deep in its throat as it felt the human male beneath it growing ever closer to climax. Its cock throbbed within Marcus' ass, demanding release even as it gave the man what he wanted. The alien beast leaned down once more, nipping at his neck and whispering filthy words into his ear that only fueled their shared passion. "Come for me," it urged, thrusting harder than ever before.