Eventuality

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Eventuality (n): Something that might happen. A possible event.

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This story is based upon the following prompt at TFAnonkink (Consider this prompt the content warnings! Seriously.):

REQ: Any except Beast Wars — Any/Any — dub/noncon, sticky, cervical penetration, cervical knotting, breeding isn't pleasant

So the idea is this: the first part of (sticky) interfacing is wild and fun. Overloads all over the place, but that afterwards comes the breeding aspect. The valve-mech goes into a sort of post-overload stupor, while the other's spike lengthens, penetrates and knots the carrier's tank, and only then starts releasing transfluid to create a sparkling. This can take a while, and is not at all pleasant (maybe even painful) for the new carrier, but in the post-overload stupor there's nothing he can do to stop it.

Maybe usually there's a cap or something mechs put on their spikes to keep this from happening, as a form of birth control. It doesn't stop the valve-mech from going into the stupor, but no spike penetrating the chamber, no new sparkling. Commence with the post-coital cuddling.

Only in this case, for some reason, the spike-mech doesn't have a cap. Maybe it was a rape, or maybe a pair of new lovers were just too excited to check, or maybe even (gasp!) they both planned on this and wanted a newspark. Writer's choice.

Whatever the reason, the new carrier is laying there in a stupor while his lover's spike does all these unpleasant things to him, taking several hours to fill his tank with transfluid. Nothing about this is comfortable, and there's nothing he can do because of the stupor. Consensual or not, emphasize the helplessness and unpleasantness of this process.

Want:
Sticky, obviously
Most kinks are okay, and would love lots of details about the interface before hand (whatever the circumstances the valve-mech should overload, b/c that's what triggers the stupor for breeding), as well as what happens when the breeding part starts
Weird and oddly shaped spikes.
Would LOVE it if it was a little… weirder than just transfluid. Sperm packets stored in the tank until the next time the valve-mech next spark merges (which could be years later after he's forgotten all about his previous indiscretion), or something.
Lots and lots of details about this process, mechanically and emotionally

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Author note: The first chapter is just a fluffy, sticky night at home for Chromedome and Rewind. The plot and content warnings get going in the second chapter.

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Chapter 1: Delight

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Chromedome stroked his conjunx's twitching frame as the tiny mech's third overload wound down from an amazing peak. "Darling... My beautiful little darling," the mnemosurgeon sighed, looking down at the suddenly frail-seeming body lying bolstered by his arm.

Tiny optics flickered on feebly. "Chromedome... You're so good to me."

The bigger mech smiled beatifically. "I lost you once, and Primus gave you back to me. But in that time I came to understand what you really meant to me. I won't make the same mistakes again."

Rewind reached up, his arm feeling as if it had been constructed of lead, and he caressed his conjunx's rarely seen features. "I won't either." Tonight had been special. He'd come home to their habsuite to find the lights low, special drinks waiting, soft music playing, Chromedome's mask off, scented oil warming, and their berth prepared. Now, after three overloads, Rewind was well into the post-orgasmic weakness, only slightly able to move or talk or even think. He lay there sighing, his fingers pawing clumsily at his mate's perfect lips, his body warm and oiled, his valve all but sloshing with lubricants and transfluid. Every sensory circuit tingled happily. Every node ached with pleasure. Their sex life had always been good, but sometimes it was amazing.

"More drink?" Chromedome offered. "It's pretty good, isn't it?"

"Yes, but you'll have to help me sit up. I'm too far gone," Rewind sighed slowly.

Chromedome chuckled softly and refilled his mate's cup from the bigger container. Swerve had sold him a bottle of something labeled 'Sandian Black Sunrise,' which had been described as 'perfect for an evening at home.' At first he'd doubted Swerve's sales pitch, but then Brainstorm saw what was on the counter and said "Oh, that stuff," and then both he and Perceptor began giggling and casting embarrassed looks at each other which just incited more giggles. "You and Rewind will love it," was the scientists' opinion.

Chromedome carefully slipped a hand beneath his conjunx and lifted him up enough to trickle the opalescent black liquid into his mouth. And when a small amount spilled across Rewind's lips, Chromedome licked it away sensuously.

"I love you," Rewind whispered against the attentive glossa.

"I love you too. More than you'll ever realize. I love you enough to never forget you, as much as it might hurt."

"Domey? You mean it? There were others. We both know there were others. And you took the memories of them right out..."

Chromedome cut him off. "Please darling! Don't say things like that. I... I trust myself that I did the right thing. Forgetting them... I must have had to." Tears began to bead up from his optic reservoirs.

Rewind kissed him again. "Domey. It's all right. Maybe our life together has been full of tragedy and sorrow, but there've been so many good things as well. I trust you," the archivist whispered.

Chromedome froze for a moment, but quickly he gathered his wits again. "You do trust me?"

"Of course, Domey."

The mnemosurgeon smiled. "Now rest a moment. Tonight isn't over yet," he said with a confident purr.

"Again? You don't have to. You know I'm not up for much after two overloads, and I've had three."

"All you have to do is lie there, my darling. I'm taking you all the way into full stupor tonight," he said confidently.

"Full stupor? We haven't... not in ages. Not since, well, long before the Lost Light."

"I know. We both have the next two days off recover fully. It's a perfect opportunity."

"Really, you don't have to. There's no need to."

"Rewind. I want to. I need to." He lay the archivist back down but leaned over him, kissing him deeply. "I have to make sure you never forget tonight. You really will trust me?"

Rewind looked as startled as he could manage. "Of course I will..."

Chromedome pulled the drowsy archivist into his lap, supporting him with both hands. Rewind looked up at him with barely-focused optics and a smile of adoration. Once more their lips met, this time in wordless promises of love and their glossae met in suggestions of pleasure. "How would you like it?" Chromedome asked softly. "How do you want me to take you over the edge this time?"

"You really don't have to make it four. I'm satisfied as it is."

"That doesn't answer the question," Chromedome countered playfully but with a tone full of gentleness.

Rewind smiled again. "Your spike rubbing against my deep nodes. Your hand around my own spike. If that's okay."

"Anything you want," Chromedome purred. Rewind had never been shy about asking for what he wanted in bed.

Chromedome wrapped his hands around Rewind's waist and turned him away from himself, releasing his spike as he did so. The length slid forth, thick and oily, the biolights around the base of it glowing an intense yellow. The first time he'd interfaced with Rewind he'd been terrified. But Rewind had been so unafraid and supportive. "It's all right. Go ahead," he'd coaxed that first anxious night. "You're bigger than Dominus was, but as long as I'm well lubricated I know I can take you." It took some practice over time, but now the pair knew how to fit themselves together as if they'd been created as a set.

Chromedome carefully lowered Rewind onto his spike, the smaller mech grimacing as the capped head forced open the entrance to his valve. The slightly bulbous end always took a little more effort to insert. And then the grimace became a moan of satisfaction as the rest of the spike followed. Their size difference mostly meant that the head of the spike reached easily to the depression at the top of Rewind's valve, and that Chromedome's spike was not still fully sheathed within his conjunx's valve.

"Lean back against me, Chromedome instructed, pulling the archivist against his chest.

With a delighted sigh Rewind settled against the broad armor plates.

"Feels good, darling?"

"It always feels good with you."

Chromedome suddenly pulled the tiny mech down onto him, eliciting a gasp as the head of his spike docked into the vestibular depression. Immediately the deep sensor nodes within the hollow tingled to life, sending a jolt of extreme pleasure through Rewind's frame. "Yes! There! Oh, so deep. You're so deep and it feels so good," the little mech mewled. His hips gyrated in slow circles.

Chromedome smiled against the top of Rewind's head. "Relax, darling. Let me do the work," he purred. One hand caressed the tiny frame, stroking lower and lower, eventually coming to the panel sheltering Rewind's own spike. "Still want this?" he asked, a fingertip toying with a seam.

"Yes," Rewind whimpered weakly between pants of pleasure.

The fingers stroked more insistently. "I'll give it to you if you tell me you love me again."

Rewind's hand clenched at his conjunx's arm. "I do love you. I'll tell you a thousand times that I love you," he groaned, fighting the lethargy brought on by multiple overloads.

Chromedome nudged aside the panel covering Rewind's spike and the dear little thing leaned out of its casing. Chromedome caught it with the tip of his finger. Rewind, like most small mechs with much larger partners, went uncapped. The main shaft would only extend halfway into Chromedome's valve, and even if fully extended, the breeding shaft would only just reach the vestibular depression. There was no danger or even a chance of Rewind impregnating his conjunx without the assistance of a doctor.

Chromedome's fingers curled and then tightened around Rewind's spike. In response the small mech moaned happily, the pleasure of his lover's embrace as good as the sexual pleasure beginning to build again.

This had always been one of Rewind's favorite positions, one in which he could give in to Chromedome's size and control, just letting the bigger mech move him as needed to achieve overload. It felt good to just hang there, completely at the whims of his conjunx endura, allowing Chromedome to do most of the work. He just had to flex his valve and buck into the large hand before him to bring about his own orgasm. Though tonight, after three previous overloads, it was going to be difficult. And as if Chromedome knew it, he worked his hand just a little harder so Rewind didn't have to. "Come for me, Rewind. Spatter me with your fluid," was the encouraging plea.

"I will, darling. I'm close already."

"I'm ready too. Overload for me. Overload for me, my love. Let me take you all the way."

"From behind. Take me from behind."

Chromedome smiled. "You want me to join you?"

"Yes, my beloved."

"All right." He positioned the two of them again, placing Rewind on his hands and knees on the berth so that he could drive into him from behind. The cap somewhat dulled the sensitivity so that it took longer to overload but for some reason in this position they almost always came together. There was plenty of stimulation to be received from the passage of Chromedome's thick shaft through the tight entrance of Rewind's valve. And now the larger mech worked hard and steady, grinding in and squeezing out of the constrictive entrance. The stimulators at the tip of his spike were working up Rewind, who was bleating out Chromedome's name despite his near-exhaustion. Chromedome's hand pulled against Rewind's spike in time with the thrusting of his hips, further adding to the sensations. Electricity crackled between their frames threatening to burst out of control.

Rewind's cascading overload began in the vestibular depression, where the stimulators in the head of Chromedome's spike finally threw the corresponding sensor nodes into a frenzy. From there the overload spread through his frame and to his spike, transfluid spurting through Chromedome's fingers and spattering across the berth. Chromedome himself followed a moment later as the feedback hit him and he shuddered in ecstasy, transfluid jetting through the oculus in the spike cap and painting the fluttering walls of Rewind's valve. Both mechs whined and trembled, cooling fans making little progress, until at last the sensations ceased to echo against each other. Insensate, Rewind collapsed to the berth and Chromedome fell down beside him, every system purring with pleasure.

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"Eventuality" continues in:

Chapter 2: "Betrayal"

Chapter 3 : "Pain"

Chapter 4: "Trust"

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Transformers and all related concepts, characters, worlds, and events are property of Hasbro and Takara Tomy. Original characters and story elements are property of E. Potter, writing under the pen name of Miratete.

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