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The groundbridge opened in the dead silence of the canyon, they had perceived a life signature out here and The Prime had insisted on going alone to assess the situation. If it was a stranded autobot they had a need to help them and hopefully add them to their small group of stranded autobots.
But at arrival he found a cave, it wasn’t exactly deep, just a couple hundred feet and walking in his path was illuminated by bioluminescence crystals, and at the back of the cave he found what he’d been looking for,,, or something like that.
Even in the little light the cave offered that frame was as distinctive as ever, strong servos bound by vines as thick as his legs, his thighs were delightfully parted and his chest raised and fell in what was, no doubt, exhaustion.
His optics roamed the plating of Megatron as if it was his right to, his protector so carefully held by the vines in the walls.
Megatron laid on his back, quickly trying to regain his breath while he waited for reinforcements, his signal was faint; the thick walls of rock didn’t allow for a great connection. For now he could only wait for his signal to be picked up by Soundwave and for reinforcements to get him out of this predicament.
His audio receptors caught the small sound of sliding rocks, his optics shot open and his dermas pulled back in a snarl, whoever dared disturb him…! His thoughts were halted by a too familiar frame. A growl rumbled across his chest.
“Prime.” The venom in his voice often froze its victims with fear, but Optimus wasn’t just anyone, whereas anyone else would run away from his aggression. Optimus thrived on it, rejoicing with the sound of his anger.
Optimus walked carefully towards his long lost mate, after 3 years of radio silence from Megatron he had started to fear his demise, but the proof of his resilience was right in front of him. His mate, so strong, so brave. His systems purred as he got closer to him, the snarls ever so enticing. His black servo lovingly caressed his mate’s thighs, warm to the touch. His fins picking up on the sigh Megatron exuded.
“I believed you dead.”
“Ugh, you rascal, mgh. You dare insult me with assumptions of death.” His mate was angry at him, and rightfully so, his needs had been neglected for three years it’s about time he set things right. He got on his knees and as he looked Megatron in the eyes he dived down to lick at his panel.
“Mgh! You— stop it!”
But he continued, his mate’s mood had always been better when he used his mouth on him.
“Optimus I will tear your helm for your— ughh.”
The panel opened and he was free to feast on his mate’s plump mesh, he moaned as his glossa licked through the warmth of Megatron’s valve. The thighs of Megatron threaten to close on his helm, but with the vines in the way and his servos holding him down there wasn’t much he could do. His spike panel pinged him to open up, the matrix roaring with chants, “MATE”, “OURS”, “TAKE”.
“Ah, ahh…” Megatron’s hips were weak against mundane pleasure, in no time he was grinding himself against Optimus face, and he was oh so comfortable just letting Megatron hump his mouth. While his mate’s mind was otherwise occupied he took the opportunity to touch as much as he could while he was distracted. His blunt servos squeezed purple protoform on his mate’s sides, so plump and perfect for gripping him back into his cock. The protoform on his thighs, covered by though armor, capable of withstanding any blast fire, his mate would be perfect for carrying their sparklings.
Curious maybe he was no more rational than his bound mate after all. All logic of the reality of raising a sparkling was glossed over as he left Megatron’s twitching hips with a final kiss. Megatron’s whines and protests were not ignored by the Prime as he nuzzled his mate’s neck, carefully avoiding razor sharp dentae, he bit and sucked on Megatron’s power lines. The warlord couldn’t do more than submit to the one feasting on his neck.
Pleased with his mate’s submission, Optimus finally allowed for his spike to extend, already hard and leaking just for him.
The tip of his spike barely brushed against Megatron’s sex, and he was already sighing. With the force of his servos he pushed one of his mate’s free legs over his shoulder plate and he positioned his hips just right, getting a hold of his chubby sides he pushed in with a certain thrust.
Both of them moaned, they were finally together again. Optimus started an erratic rhythm, the sound of their hips meeting in a pool of their own lubricants. After 3 years of abstinence he was eager to remind Megatron just why they had bonded so quickly after meeting each other in bed the first time. Megatron’s moans and sighs were like music to his audio receptors, so good for him, so strong, so good.
Megatron’s claws scratched at his restraints, somehow he always ended up helpless when he met with his mate, the berth was just another battlefield his mate was focused on conquering. The strong hold on his hips as he fucked his way into his protoform chamber, did he ever stand a chance? His red optics stinged with cleanser fluid ready to spill, he was so close to cumming.
“P-rime…my node’s mghh, awfu-lly lonely.” He tried saying between moans.
“Apologies…” immediately two strong digits took his node and started masturbating him in circular motions. He almost screamed, his Prime was so attentive! His mind drifted to the external force hammering his baby chamber, so ambitious his dear mate was. Maybe he just might reward him with an heir or two, just then his cervix gave in and his mate was flooding his walls with his seed. He came with a whine, he spilled his climax over both their abdomens,after a quick 20 seconds a strong torrent turned into a small trickle.
Optimus’ smile was feral, once again he had conquered his mate’s womb, only time would tell if their coupling was successful. He relieved the aftershock of his orgasm with some quick jabs to his mate’s sex, the unhappy grunts made him smile softly. He got his face out of Megatron’s neck to meet his optics. They were soft despite their ruthless Ruby color, his thoughts were interrupted by a hungry mouth claiming his lips in a kiss. He enjoyed the tenderness of the moment, once they separated he couldn’t help but kiss his mate’s face, the corner of his lips, his cheeks, his temple and his jaw.
A satisfied rumble cursed through both their armor, not long after Optimus’ spike had softened and he retracted from Megatron’s valve, with a grunt of uncomfort they were free from one another. Optimus swiftly cut the vines holding Megatron and he took a towel from his subspace, slowly cleaning their frames of their shared pleasure, Megatron closed his valve panel while there still was transfluid inside.
Under Optimus’ inquiring gaze Megatron could only respond. “I want to keep it inside, until we get home.”
Optimus’ eyes lit up, the prospect of having his mate wishing for them to conceive was all he ever wanted. He cleaned his own equipment and then he helped Megatron get up, he caressed his hips that would be no doubt sore, they were not as young as they used to be after all. Along with reassuring words he commed for the ground bridge to take them back to their home in Iacon, they were in urgent need of a bath.
The end.