Sanscest Oneshots Rarepairs

#41 Dust x Nightmare

Requested by 3rror_124

Happy December dear nerds, I've been doing way too much with my life recently...

Tw: Pain kink
[LEMON]
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Dust walked down the hall to his room, he had just got back to the castle after a long and dreary mission, feeling quite worn out. Upon arrival he asked Killer to inform the boss of his completion, so that he could go rest for a little while before the next task that was sure to come.

The others were gathered downstairs, to his gratitude. His head was aching from a lack of sleep, and it probably couldn't take a lot of noise right now. He rubbed a hand against his forehead, the pain persisted despite his effort to make it disappear.

He arrived at his door, grabbing the cold handle and twisting it right. The door swung open with a little extra force - it got stuck sometimes - and he practically fell into the bedroom, shoving the door back as he did. His room was rather dark, so the first thing he did was switch on his little lamp, illuminating it up nicely. He was glad to be back home, his room was nice and cold, his bed soft and inviting, and he was going to have a very nice nap. He slipped off his hoodie and kicked his shoes under his bed, changing into some clean and warm pajamas. The lamp was switched back off once he climbed into bed and got under the covers. He was left once again in darkness, and finally got some shut eye.

Hours past, the night grew later, the room darker. And Dust began to stirr. His eye-sockets opened, he blinked out the sleep, but he couldn't help but feel that his nap wasn't complete. He slowly sat up, stretching out his bones, as his eyes tried to get used to the darkness in his room, he tried to figure out what it was that had woken him. Had somebody comd in for a breif minute and left once they saw he was asleep? The door can be pretty loud at times, so that was his theory for approximately 10 seconds, before he swore he saw a shadow in his room move. He fumbled around on his bedside table, looking for the switch for the lamp. It took him a minute - a slightly panicked minute - but he finally found it and flicked it on. And as the light enveloped his room, he was surprised to see his boss, Nightmare, standing by the wall. Though it did make sense, Nightmare was the only one who could blend into the shadows so well.

Dust cleared his throat and looked up at him, worried for what his boss could want at this time of night. Thoughts of being sent on another mission so soon, or worse; having incorrectly completed his last swirled inside his mind. He silently prayed that neither of those were the case. He would take literally anything over either one of those outcomes right now.

"Good evening Dust. I have come to congratulate you on a successful mission. Your performance was satisfactory." Nightmare spoke. His deep and cold voice sent shivers down Dust's spine, who was understandably comfused. Nobody had ever gotten this close to receiving a compliment from the boss before. He was unsure of what had brought this on, but his immediate assumption was that it was some kind of trick.

"Thank you sir..." Dust mumbled, giving a thumbs up and a nod. The silence that followed was deafeningly awkward, as his boss just stood there, staring at him. He glanced away slightly and asked the dreaded question.
"...Is there something else you need?"

"Why, infact, there is actually." Nightmare responded, Dust felt his soul sink slightly, especially as he gazed at his bosses face, which held the most unnerving smile he had ever seen in his life. He inquired as to what was needed of him, and the response he recieved was vague, and slightly threatening. 
"Maybe if you close your eyes, you'll find out."

Dust was concerned, but obeyed his command, closing his eyes and quickly the feeling of tentacles wrapping around his limbs was upon him. It wasn't the most reassuring thing when he was gently laid back on the bed, but what came next he couldn't just ignore.

"Wait, wait! What are you doing?" His eyes snapped open as he tried to stop himself from yelling. Though he couldn't really not yell, there was no other normal reaction one could have.

"I'm taking off your clothes." Nightmare stated, seeming unfazed by Dust's panic over the situation, only making the smaller skeleton feel worse.

"Okay, but why are you doing that?"

"Isn't it obvious?" Just now, Dust glanced down and noticed the erection made of magic in his boss' crotch area. He was slightly surprised he didn't notice earlier, even if he tried to stray away from looking in that area, he felt something like hat would be a lot more obvious.

"I... didn't know you could feel that kind of emotion..." Dust found himself unable to look away, a purple blush formed on his cheekbones as he thought about what would soon happen to him.

"Hm... a lot of people don't seem to understand that 'lust', the feeling - not the skeleton, is heavy with negative connotations, what with it being a sin and all. You just so happened to be the lucky Sans that I want to take this particular feeling out on."

Dust had to admit, being put in this position did make him feel a little special. He thought more about what would happen, before slowly nodding, allowing Nightmare to continue stripping him. From the sheer thought alone, his magic had formed into his ecto-body, something that didn't get used often so it felt rather weird. Cold air hit his body as his clothes were discarded, and he watched as Nightmare started to remove his own, dick throbbing in anticipation.

Before long they were both completely nude, Nightmare had his cock lined up with Dust's asshole, patiently waiting for the other to get even more desperate for him. He didn't think he was quite there yet, despite Dust's own cock already leaking pre-cum. He hadn't even been touched yet, how embarrassing. His tentacles tightened around the skeleton as his prodded the hole with his cock, smirking at the soft panting and pleas coming from Dust. He allowed him to continue to bed for a few minutes more, before finally giving him what he wanted. He slammed his cock inside and started at a quick and rough pace, fucking into him mercilessly.

Dust threw his head back and moaned, loud.
"F-fuck...more, pl-please..~!" Were the only words he could make out as his ass got conpletely destroyed by his boss. He felt himself drooling a little, but arms restrained he was unable to wipe it off, so just let it be.

Nightmare's cock was a tight fit inside Dust's tiny ass. He almost felt like he was tearing the smaller skeleton apart at times, which only made him go much rougher, craving those moans that just got gradually louder. One tentacle squeezed it's way inside with his cock, thrusting almost as rough as he was himself, despite there being so little room to do so. Some moans of pain mixed in with Dust's moans of pleasure, hard to tell apart but Nightmare took it none the less. Any moan was a sign he was doing good.

Nightmare kept on going, only getting much more rough as time progressed, until he felt close. He gave Dust no warning  before hand, thrusting deep into his ass and cumming inside, getting a little satisfaction as Dist then proceeded to cum for at least the third time that night. The tentacles eased up and Nightmare put his clothes back on. He laid a blanket over the exhausted Dust and walked over to the door, stopping and turning to him before he left, saying;

"Have a good night, Dust."