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fuzipenguinFandom: Transformers
Series: Kinktober 2021
Author: FuziPenguin
Characters: Sideswipe, Sunstreaker
Pairing: Sideswipe/Sunstreaker
Rating: NC17
Word Count: 1436
Summary: Sunstreaker had some hesitations about indulging Sideswipe's kink somnophilia kink but after they set some limits around it, he's discovering that he enjoys it, after all.
Warnings: Established Relationship, Twincest, Sticky Sexual Interfacing (Transformers), Somnophilia, Consensual Somnophilia
Notes: Self-beta'd.
Disclaimer: This is a piece of fiction. No harm was intended in the creation of this work. All rights belong to the original creators.
Day 28 - Somnophilia
It was the way Sideswipe was sprawled across their berth that gave Sunstreaker the incentive to try. Sideswipe’s hips were twisted slightly, his right knee pulled up and over his straightened left leg, while his back was flush to the bedding. Head turned away from Sunstreaker, Sideswipe’s left hand rested on his chest, and his right arm lay flung up above his head. He snored softly, lips slightly parted because his nasal ridge was still healing from the last battle.
So was his broken cheek strut and audial, but that was all the damage. Everything else had been superficial scrapes and dents, and he was off pain buffers. The only reason he recharged now was that it had somehow slipped past Prowl’s notice Sideswipe had been scheduled on back-to-back long-term patrol shifts.
Probably because Prowl himself was just coming back onto duty after a serious knock to his head.
Sideswipe had wanted to ‘face as soon as he had returned to base but Sunstreaker had told him to recharge first, noting the lines of weariness in his twin’s face. The fact Sideswipe still hadn’t healed completely despite the last battle being well over five days ago was a sign his systems were stressed.
But Sideswipe had had long enough to go through at least one defrag cycle by now, and he had been begging Sunstreaker for something like this for weeks.
Sunstreaker tossed his sketch pad onto the floor and rolled against Sideswipe’s side, propping his head up on one hand. The other he placed on Sideswipe’s waist.
Sideswipe didn’t stir. There was no reason for him to. They came in and out of their berth while the other recharged all the time. They would curl against each other’s other frame after getting off shift if one of them was already in bed. Arms and legs would intertwine without the recharging twin ever waking up.
So, Sunstreaker was interested to see if sliding his hand farther down between Sideswipe’s thighs would get a reaction. Surprisingly, it didn’t. At least not immediately. After about forty-five seconds of lightly caressing his array cover, however, Sideswipe sighed, and his hips slowly turned towards Sunstreaker.
Aha! A step in the right direction!
Almost immediately, Sunstreaker felt a surge of guilt. After Sideswipe had essentially been roofied at one of their parties a few months ago they had a long talk about consent. Which had led to Sideswipe confessing he had been nurturing a kink involving Sunstreaker initiating an interface while Sideswipe was unconscious. That had prompted even more discussion and a set of hard and soft limits. Sunstreaker had promised he would try at some point, but it still felt very, very wrong.
Although this wasn’t so bad – so far. It wasn’t quite right, because Sideswipe wasn’t smiling up at Sunstreaker, hands roving like they normally would. But Sideswipe also wasn’t shirking aside either. He was still responding. Somehow, subconsciously, Sideswipe knew it was Sunstreaker.
Which had been one of Sideswipe’s whole points, of course.
Sunstreaker leaned in and kissed the side of his twin’s neck, lazily licking a path up to Sideswipe’s jaw before moving back down. Concurrently, Sunstreaker’s fingers danced around the edges of the warming interface cover. And it was kind of nice to just quietly nuzzle and stroke, to soak in the scent of Sunstreaker’s mate at his leisure - without said mate bouncing around like Sideswipe always did.
So focused as he was, Sunstreaker was a little surprised when between one moment and the next his fingers went from trailing over the hard metal of an array panel to brushing over the damp head of an exposed spike. Sunstreaker looked down to confirm, that yes, Sideswipe’s cover had completely retracted, and his spike was peeping out of its sheath. When Sunstreaker dipped his fingers lower, he also felt moisture gathering between the pleats of Sideswipe’s valve, but Sunstreaker’s interest was higher up.
He coaxed Sideswipe’s spike into full pressurization over the next several minutes, fingers stroking and gripping while Sunstreaker kissed and sucked around his brother’s throat. At one point, Sideswipe shifted so his pelvis was completely open to Sunstreaker’s exploration, and he made full use of the involuntary permission.
By the time Sideswipe’s spike had firmed enough to fully fill Sunstreaker’s palm, Sunstreaker himself was heated. He gently rocked his closed panel against Sideswipe’s outer thigh while urgently sucking at Sideswipe’s neck, soaking up every little noise he managed to wring out of his twin. Normally there’d be all kinds of curses and loud exclamations but now there were just barely audible sighs and faint, pleasurable hums.
It was quiet and intimate and really, really nice. Heady even. Sunstreaker could kind of see where Sideswipe was coming from regarding this kink.
Sunstreaker edged himself for another minute or so before carefully rolling atop Sideswipe, straddling him with Sunstreaker’s aft in the air. He let go of Sideswipe’s spike so it could gently rest against his abdomen and Sunstreaker dipped down, rubbing his valve over it. He moved his kisses to Sideswipe’s jaw, and then to the corner of his mouth, blowing a stream of air over his lips when Sideswipe’s glossa lazily peaked out and wet them.
“ – ngh – “
Sideswipe’s head shifted, lips moving almost imperceptibly against Sunstreaker’s in a sigh. His fingers on both hands twitched, shoulders rolling slightly. Proof he was starting to wake up a little. Time to move things along.
Sunstreaker reached down between them and steadied Sideswipe’s spike. Positioning the head of it at his valve, Sunstreaker eased down. His optic shutters half-lidded as he slowly penetrated himself, and he avidly watched Sideswipe’s face to see if he would wake fully.
Orbital ridges furrowing, Sideswipe bit his lower lip and arched his neck, but didn’t open his optics. Sunstreaker gently kissed him and sank down a little farther before rising. Lips softly massaging Sideswipe’s, Sunstreaker finally fully impaled himself, aft settling completing on his twin’s pelvis.
As he slowly ground back and forth, Sideswipe’s optics finally started to flutter open. They sparked to life, his gaze hazy as it slowly scanned his surroundings.
“ – Sunny?” Sideswipe slurred. His right hand rose to clumsily paw at Sunstreaker’s shoulder. “ – ‘m I dreamin’?”
Sunstreaker reassuringly smiled before brushing his mouth over his twin’s. “Mmhm. Everything’s ok.”
He rested his weight on Sideswipe’s chest, spreading his knees wider and rebalancing himself so he could use his palms to frame Sideswipe’s head. Sunstreaker’s thumbs softly stroked over Sideswipe’s cheekstruts in sweeping arches. “You’re ok. You’re safe.”
This had been Sunstreaker’s biggest worry. That Sideswipe would wake up and freak out because he thought someone was raping him. But Sideswipe merely gave him a sleepy smile and turned his head to rub his face against Sunstreaker’s hand.
“ – course – ’s you.”
Spark feeling liquidy and warm, Sunstreaker kissed him, their glossa moving together leisurely. Sideswipe’s hips bucked up once as if giving Sunstreaker permission to move, so he did. He stayed plastered to Sideswipe’s front, kissing his lips, jawline, and throat, while Sunstreaker slowly ground back and forth atop his twin’s spike.
Everything felt so unhurried; Sunstreaker lost himself in the simple press of lip against lip, the fullness of his valve, and the way his node constantly rubbed against Sideswipe’s abdomen. Sunstreaker felt so good that barely realized the pleasure was steadily building until a surprise overload washed over him in the gentlest of waves.
It grabbed him and held him firmly, his neck arched back and moans trickling past his open mouth. When the heavy spasms released him, his entire frame unclenched all at once and he melted down atop Sideswipe, panting slightly.
“Mmmmm – that was so hot,” Sideswipe murmured against Sunstreaker’s cheek.
“Did you – ?” Sunstreaker came to a sudden realization. Sideswipe was still hard and Sunstreaker wasn’t overly dripping.
“ – no.”
“Seriously? I thought this was your kink?” Sunstreaker demanded, leveraging himself up to peer down at his twin.
Sideswipe’s optics were mostly closed, only a sliver of dim blue visible. “ – tired. Maybe my valve – ”
“You don’t get tired,” Sunstreaker stated dubiously.
Sideswipe sighed and his optics closed the rest of the way. “ – do. Stay. ‘ll face you ‘morrow.”
Then he started snoring again and Sunstreaker blinked down at Sideswipe in complete disbelief. That had to be a first. Normally Sunstreaker was fighting his twin off with a stick while trying to recharge. Not the other way around. Well, Sunstreaker knew what it was like to be exhausted. And he knew the comfort of having someone he trusted draped over him while recharging.
It made for the best sleep, even if there hadn’t been an overload beforehand.
~ End
