Nightkiller Oneshots [but NSFW Only] !

4. Secret!

Sorry, it seems I'm only capable of writing nsfw these days, deal with me. Also, don't ask me how skeletons kiss, because that's a question that shouldn't be asked after all those years..

Oh, and Nightmare's in passive form!

***

The two of them kissed passionately, sharing that heated moment with everything they got. Nightmare pushed Killer against the bathroom's wall, holding his skull to protect it. The tip of his phalanges traced Killer's ribs under his shirt, making the smaller skeleton quiver under him, arching his back stutteringly. He let out a few heavy pants after separating their kiss, groaning when Nightmare caressed his sternum gently.

For some reason, Nightmare was being extremely gentle and careful with Killer since they started to.. physically "flirt" with each other at the table. The others didn't seem to notice at first, so they kept going until it got too intimate. And now, here they were.. It all started when Killer got jealous over the cafe's waiter asking for Nightmare's number; he didn't bother trying to remember the name anyways.. and with that, the touching started.

Nightmare suddenly stared intently at Killer's voided eyes, his frown loosening a little. Killer knew what he wanted by that look, he had stopped all the touching after all; he summoned a male ecto body for his lower parts. Nightmare's soul hesitated as he stared at Killer's ecto length slightly marked at his pants. He unbuttoned them quite quickly, pulling them down along with Killer's yelp. It wasn't too big or too small, but it didn't matter anyways.. There's no way Nightmare's getting it up his ass.

Killer rolled his white pinpricks at the staring, pulling the pants fully down and taking them off. He stood back up and took his shoes off with his feet; as he did that, he wrapped his arms around Nightmare's neck. "We don't have much time, hurry up, Boss.", he whispered with a smirk, making the "Boss's" breath hitch. Killer knew what to say, he was experienced.

Nightmare immediately unbuttoned his pants while going back to kiss Killer, going back to their heated kiss, but a bit more aggressive this time. He pulled them down just enough for his ecto body lower part's to be free. His hand wrapped around Killer's member, making him let out a panted moan. "You're such a tease, y'know?", he whispers by Killer's skull, making him shiver and moan again as his member got squeezed around Nightmare's metacarpals.

"Right, right- Hurry up..!", he groans,  pressing his forehead against Nightmare's shoulder. Almost immediately, Nightmare pulled Killer up in his arms and pressed his ass against his dick, making Nightmare feel the wetness at the entrance. "Woah..", he chuckles lowly, Killer's cheekbones dusting with a reddish color, making Nightmare grin. He grabbed one of Killer's asscheeks and gently squeezed it, his phalanges tracing down to his entrance and inserting two fingers inside Killer's entrance, the fingers slipping in surprisingly easy.

Killer could feel Nightmare's dick getting bigger under him, making him bit his lower lip as he moaned quietly at the way Nightmare's fingers moved inside of him. "Is it.. here?", Nightmare asks right when he trusts his fingers in a certain spot, making Killer tremble and moan quite loudly; "MnNgh-! G-Gosh, Night..", he panted the words, his eyes half-lidded as he held onto Nightmare's shoulders like his life depended on it, scratching the other's bones with the tip of his phalanges.

Nightmare groaned and went straight for Killer's neck, nibbling at his clavicle. "HMn- A-AaH~..!", he moaned out loudly again; Nightmare didn't stop the nibbling, but he quickly took his finger out, making the smaller whine, and lined his dick at Killer's entrance. Once he whined he immediately stopped and tried pushing his hips down; "C'mon, Nighty.. Plea-", Killer was shut when Nightmare thrusted inside of him, opening Killer's insides in a single thrust, making him whimper and let out a stretched moan.

He trembled on Nightmare's hold, panting. His skull was tilted up slightly while he tried to catch his breath. Nightmare laughed at that and kissed his mandible before grabbing Killer by his ass and slowly pulling his body up. "Mnh~.. Quick-..", he whispered to Nightmare, looking down at him.

The taller skeleton didn't waste any more seconds as he thrusted inside Killer again, making him quiver and moan one more time. God, he loved the sounds Killer made.. He kept the pace, thrusting in and out of Killer steadily, but not too fast to avoid overwhelming the one in his arms. Killer kept letting out moans, moans that ended up turning more sloppy at each wave of pleasure he got by Nightmare thrusting right at his sensitive spot.

"Fas- Faster..", he panted out. "Hm? What did you say?", Nightmare teased him, slowing down his thrusts. Killer groaned and moved his hips; "Faster!! I- I said faster!!", he yelled out, rashly moving his hips by himself, but obviously not being enough. Nightmare grinned and went towards the sink counter, laying him there. Killer held himself up by his hands, panting; "Stop doing that..", Nightmare says before pulling Killer's legs wide open, appreciating the view he got from the smaller skeleton before thrusting back inside with more strength and speed.

"HhAgh~~! Y-Yes! There, there~!!", he moaned out as loud as he could, his pinpricks rolling up as he kept moaning lewdly. Didn't take much for Killer to start crying from the pleasure as he weakly tried to grab Nightmare's arm. "Nighty~..! Night, Night, Night!!~!", he yelled quickly, and Nightmare knew he was close. "You can come, let it out.", he whispered by Killer's skull, wrapping his hand around Killer's member again as he pumped it up and down.

Killer's back arched as he moaned and came onto his shirt and Nightmare's hand, panting heavily as Nightmare thrusted inside him a few more times before coming. He didn't bother to come outside anyways, he wanted Killer to bear with it until they got back to the castle. "You okay?", he asks the smaller while slowly pulling his dick out. Killer laughed and looked at Nightmare, smiling. "I loved it. I'm perfectly fine.", he says seductively.

Nightmare's cheekbones dusted lilac as he looked away, making Killer chuckle. After they put back their clothes, Nightmare quickly unlocked the door, Killer gasping as he hadn't even noticed it was locked. "Skillful.", he chuckles, making Nightmare secretly grin. They walked back to the table while ignoring the looks they got from some people that were waiting at the bathroom door, seems like they know something.

They sat back and, obviously, acted like nothing happened, even though everyone practically knew it.. They just didn't need to point out the obvious, it's not like Killer and Nightmare were willing to hide anyways.