MDNI: Slow sex and Old tapes
Pairing: Sentinel Prime x F! reader
Fandom: Transformers, specifically Dark of The Moon
Rating: 18+
Warnings: old man servicing you, age gap, xeno, mentions of racism and death, Sentinel still can get it up miraculously
Sentinel is not an asshole in this one, purely for my thirst for this robot.
After being brought back to the world of the living by Optimus' very *gentle* handling with the matrix of leadership, Sentinel was now stranded on this organic planet with his ex-undermechs. They were outnumbered, outgunned and with the pillars now gone thanks to the slow advancement of the humans, the Autobots will have a very hard time in challenging Megatron. Winning was already off the table for the former Commander. All they could do now was maybe try and prelong their already known fate: dying.
Humans were tiny organics, and he looked at them, trated them like they were some kind of desgusting insects. Why did his pupil ally with such insignificant creatures, he couldn't tell. Sentinel was a man of ration and power, but by the Primes, his old age was not helping him in the slightest. And the blonde human femme was infuriating him like no other could in his entire life... and he did deal with some pretty nasty scraplets in said life.
The drop that would fill the glass of anger for the old Commander was when Optimus himself presented a human femme to him. "She will be your guide here on Earth. Y/N was one of our first allies when we arrived here and I believe the two of you will get allong perfectly" Sentinel wanted to protest, he really wanted to, but something in his spark didn't let him when he looked at you. By the stars, weren't you a very pretty human!
Sentinel gently scooped you up in his servos and brought you closer to him, "Aren't you a sight for sore optics" He started to ramble about his past as he carried you to his secluded area of the lab at N.E.S.T. You have learnt many things about Cybertron's past: about the thirteen primes, about the High Council that reigned for generations, about his early ages in the military and the misschief he caused-
"You? Causing misschief? I must say, I can't believe that!"
"Oh, I know little one. But it is true. It was not seldom I found myself sneaking out of my sqad's formations to make a break for it and go in the city! Some of my peers did cover for me when they could so I'd take minimum punishment for it. This reminds me-"
And you also learned quickly that he loved to talk about the past, like any old man. Maybe humans and Cybertronians weren't so different after all, since it was clear that Sentinel Prime was just like a grandpa that talks to you while you wait in line at the convenience store. "Sentinel, you seem to avoid something. Optimus said you are anxious about his battles with Megatron"
"Ah, that..." His voicebox clicked in a weird way trying to clear his voice maybe, then take a deep breath in. He heard that it helps with nerves, but it did anything else than help him. "You are a young speecies, humans. You do not even understand the science behind my spacebridge pillars, let alone understand the complicated feelings of a Cybertronian worrior."
He was right, maybe rude and a bit judgemental, but he was right. You didn't really understand the things that made Transformers click, but one thing you knew very well. "Are you scared?" Was he scared of something? Or maybe you just missinterpreted his actions and was going to anger him.
"Concerned, more than scared. I fear the day that Optimus will make the same mistakes as I once did."
"You were a great teacher, I am sure that he learned from your mistakes long ago"
He smiled slightly, the corners of his intake twitching slightly. You could've sworn you heard him call you a cheecky bustard, but maybe it was just your imagination. Either way, Sentinel Prime trusted you and allowed you to be in contact with him. A huge achievement, my friend, believe me.
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One particular cold night at the N.E.S.T., you were waiting at the docking bay for the platform carring Beta team back home from a mission they had in Europe. They were going to retrieve a Cybertronian artifact that Ratchet's scanners have picked up, but you havent heard from them since they set sail to come home. "Now who is the one that concerns herself with others?" You heard Sentinels quiet, robotic voice coo at you.
He was right, you were concerned, and you had a bad feeling about this. "Can't I be waiting for my friends to come back?" You spat back a bit too harshly, but he didn't mind it. He lost many mech in his life, friends, collegues, even family. War was a terrible thing so he knew better than to make you feel bad about being snappy.
Sentinel sat next to you, tucking his wingblades tightly around him and waiting with you. You glanced up at the metal giant. Now that you thought about it, you never actually saw his alt-mode. What was it? He had detachable wings that he used like claymored when training with Bumblebee and Ironhide; yet he also had truck tires like optimus. 28 guage? He was really heavy duty! Knockout would've approved. It didn't take long for your cheecks to heat up at an alien thought in your mind as you kept eyeing the older Prime.
He didn't show any signs of rusting, like you've seen in Wheeljack, and he certainly was still as strong as a Predacon. For the love of all that's holy, the mech almost tore down the place when he was resurected because he was still in fight mode, ready to shake the grounds for some lowly Decepticons. If there was some kind of parralel for dilfs on Cybertron, you were sure as hell that Sentinel would be a decent one.
You found your eyelids become more and more heavy, and your head bumpped into the side of his thigh with a slight thank sound. "Easy, there little one... I'm still very much made of metal and you of flesh" He chuckled as you rubbed your head where you hurt it. "Yeah, I know. I managed to bonk it like hell on you..."
After some time, you finally realised that no one was coming back and you started to tear up, looking up at the stary sky. You didn't even know why you were crying for, you knew that this was a very dangerous job and it was never certain that they will return at all, let alone return alive. As your eyes clouded with tears, you felt one of Sentinel's digits gently pat you on your hear, ruffling your hair.
"There, there, little one. You are not alone"
"You'll die too one day"
Now why did you have to go and spoil it all by saying something stupid like that. The poor mech was just trying to make you feel better, to confort you; you needn't be that stingy with the old man. You tried to appologise, but he wouldn't have it. As he put it: one must never appologise for the way their soul feels, little one. In other words, he was understanding, more than you ever thought he could.
You cried, as he held you in his hands the whole night. It was almost immpossible for him to soothe your pain to be honest, and the Prime felt bad that he couldn't make his companion feel better. "Death is a bitter and unfair thing, my dear. But we must honour our allies by remembering them in the best way-" You felt very sappy already and shut him up by pressing your hands to his metal lips. He caught the gist and stopped talking, allowing you to talk.
Sentinel's optics widdened slightly as you pressed your lips to his in a soft kiss. The image itself was quite funny because you were quite a small human and he could literally fit you in his intake whole. Not that he'd ever do something like this, Sentinel was a vanilla-typpa-man. Somewhat.
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Later, when the clock hit 2 in the morning and the N.E.S.T. base was almost too quiet, you laid sprawled in one of Sentinel's servos, naked, as he was working his glosa on your needy, wet core. You were trying very hard not to moan, not to even sound out a whine, nothing. But it was difficult, as the older mech knew how to make his partens very satisfied. Every time your body twitched and tried to seek some form of support in him, he left out a slight chuckle.
"Is my little human already going to cum all over?~ Is my sweet girl going to beg for more?~" He kissed you again, the kiss itself being more hungry, but still somewhat holding back. The Prime didn't want to hurt you, not one bit and he knew how fragile humans could be.
His other servo pressed on top of you putting some pressure on your body. His colld metal cooled down your aching heat only a bit, making it more bareable. "So needy, my little girl" One of his thumbs moved and prodded the enterance of your vagina. That was it, you couldn't contain yourself anymore as you began to moan for him and sob as he got his tip in.
He shushed you, as his interface panels slowly retracted and let his spike presurise. By the Primes, he thought you were absolutely devine. Sentinel shifted himself, one servo holding you, thumb pumping slowly in and out of your pussy and one on his spike, slowly chasing his own overload.
"Are you going to be a good girl for your sire?"
"Yes-"
"Yes?"
"Yes!" You screamed out as you squirted, yet his movements didnt stop. "no, no little girl. We aren't stoppint until I have seen enough of that pretty face of yours as you cum on my digit.
Lets just say, the morning was finally when you managed to catch some shut eye.