Hey yall! So this fic was very inspired by one I read on AO3 by Queennorking called Late Bloomer. This fic is +18 NSFW so minors DNI!! (though it doesn’t go into sex, still, readers discretion is advised.)
Though in my fic, The Last Prime is on Pandora, the transformers can’t fully procreate. Yet him this blurb Optimus is experiencing his first heat cycle, and it’s quite the unpleasant surprise for him.
This will be different from my story and I’m just being silly. Go read the fic (if comfortable) that this was inspired by, and have fun ;)) also I did not use AI to write, and all Na’vi translations are from LingoJam.
It was midday, and all the village people were far past the point of awakening. The Autobots sat outside their kelkus, conversing around the dead fire pit as they enjoyed the nicer weather that had begun to come along. Ana’yu and Seze were off on a hunting trip, and Eantaw and Layonpay were with Ni’alu. Yet Optimus was nowhere to be found.
“Do you think he stayed up for too many solar-cycles?” Mirage wondered. Bee shrugged his shoulders with a laugh while Ratchet’s gaze continued to land on the Prime’s massive kelku.
“I’m.. not so sure,” he confessed. He debated on going and waking him up, but something felt off, different, for the Prime rarely ever stayed inside of his tent this long. Not unless Seze was asleep, which she wasn’t.
“Hey.. Prime, you awake?” Ratchet com-linked him.
Optimus was currently in the process of bundling all of the blankets that were inside of he and Seze’s home, putting them in a ‘small’ nest in the corner. Small was quite the ridiculous word for his size.
His processor was in overdrive as he almost felt panicked, and his metal shuddered with a sickness that he couldn’t quite pin point. He felt as if his engine was running white hot, and he couldn’t get his processor off of this damn nest, along with a few other things.
“Optimus?” Ratchet com-linked him, and that very Prime grunted as he answered.
“What?” he nearly snapped, and could only bring himself to feel the smallest amount guilt. Now Ratchet knew there was something up.
“Hey, easy, what is it?” he worried, and Optimus sat himself down within the blankets, curling and coiling within them as he drowned himself in Seze’s scent. It only made his hardware nearly short circuit as it slithered through his systems.
“Ratch.. I.. ugh.. ” he groaned as he put his face in his servos, doing his best to ignore the near painful warmth and pressure beneath his interface panel. Ratchet, meanwhile, felt his spark pulsing with anxiety as he looked at his kelku.
“Can you.. come to the ship? So I can at least check on you?” That was absolutely out of the question.
“No! I- m sorry, but no.. I- I really need to stay in here,” he begged, and looked down with humiliation at the sight of interfacial fluid lightly leaking from his panel.
Ratchet almost ignored him, for he had never sounded like this in all of his time of knowing the old Commander.
“Okay.. okay, can I at least ask what in the All Spark is going on?” he worried.
Optimus nearly cried as he writhed within the uncomfortable emptiness that surrounded him. He ached to have Seze there, for the fact that only her past scent had lingered was driving him absolutely wild. Yet he was coherent enough to know that clearly, Ratchet was just worried, and for good reason. He knew he at least had to try.
“Um.. I feel, irritable? Restless.. I.. I really am.. craving Seze’s scent and.. her. I.. I’m pressurized beyond belief and I feel.. almost panicked?”
Ratchet, outside the kelku, felt his optics widen as they stayed fixed onto the Prime’s home. He knew exactly what was most likely going on, and it surprised him. For Optimus, to his knowledge, had never experienced such a thing.
“Alright.. I need to ask you a few questions. First.. have you been feeling the need to make a nest at all?” Optimus tossed once more in that very nest.
“Yes.. I- don’t know why.. but I made one just now.. I don’t understand it.. but when I awoke, it was like a prime directive.” Ratchet nodded as he felt his spark slightly sink.
“Okay.. have you been.. craving the need to interface? Like, an insane desire? Do you feel almost sick?” Optimus nodded in his servos. This was absolutely humiliating.
“Yes.. and yes.” Ratchet let out a small sigh through the com as he prepared himself to have this conversation, but it wasn’t like they hadn’t had worst ones in the past.
“Okay.. Optimus, I need you to stay calm and just listen to me, alright? The good news is that you’re not sick, but..” he trailed off, and Optimus nearly shouted in frustration.
“But.. you are experiencing a heat cycle.” Optimus’ optics widened as he finally stopped his writhing just enough.
“A heat cycle.. you know, the desire to-“
“I know what a damn heat cycle is, what do you mean I’M experiencing a heat cycle?!” Ratchet took a deep vent as he began to walk to the ship, for he knew that Optimus needed energon, and he needed it badly.
“Is everything good?” Mirage worried, but Ratchet ignored him as he continued on walking. The medic tried to think of any and all possibilities, and only one really made sense.
“Optimus.. maybe.. now that you have a reason to interface, your systems have brought that back online. Since before-“
“Okay okay, I get it.” It was seldom that Optimus ever snapped or cut anyone off, and that was even more of a clue that what he was experiencing was not normal for him in the slightest.
“But.. even.. even when she was in my existence, I never experienced these. Why am I only now experiencing this?” Optimus then wondered, holding Seze’s black blanket to his chest as he nearly suffocated himself with her scent.
Ratchet solemnly shook his helm as he made it inside the ship, grabbing a few cubes of revitalizing energon that he would have Seze give to him. These cycles took nearly all of a Cybertronian’s energy, and considering what planet they were on, Optimus needed to be in as good of condition as he could be.
“I wish I knew, Optimus, sometimes it’s just a switch that gets flipped.”
The Prime then began to feel dread, for he knew that Seze would be back from her hunting trip at any moment.
When he awoke this solar-cycle, his symptoms weren’t horrible, and if anything he only felt the smallest bit irritable. Yet now, hours later, he felt as if he were becoming feral, starved of touch as that simmering desire began to slowly grow to a boil deep within his chassis. He was slipping, and knew that she did not need to see him like this.
“How- long does this last?” he almost whined, and Ratchet tried to think, pede clinking against the metal floor of the ship as he put a digit to his chin.
“A few cycles.. give or take.”
‘Give or take my aft,’ the Prime thought angrily, but took a deep vent to calm himself. This wasn’t Ratchet’s fault, and he knew it wasn’t. All he wanted was his beloved Blue flower, but with what turmoil was coiling through his tank, he knew where that would lead, and how dangerous it could possibly be for her.
“I.. I can’t be around Seze like this,” he nearly whimpered. Yet Ratchet let out a small huff of breath, now he was being dramatic.
“Optimus.. it’s not like you’ll suck her blood out like an energonpyre or something. You’re just in heat and need to release-“
“I am NOT going to take this out on her,” Optimus spat as he fought with all of his strength to not self service in that very moment. He at least wanted to wait until he knew Seze wouldn’t be here, and he would be fully left alone. The mere thought made his valve pulse in excitement.
“Optimus, when you’re in your heat cycle, your em-field and your circuits crave a mate, a partner. If you have one, which you do, it would do you some good to have her there with you. It can take the stress of this off of your processor.” Optimus nearly moaned aloud at the mere thought of her laying there with him.
The idea of her warmth that was normally his solace, now brought shivers of pure desire through his plating. He knew the moment his lips landed on hers and her thighs were within his servos, it would be over.
“Ratch.. this.. I don’t know.”
“She would want to be there for you, Optimus. I’m sure if I explained this all to her, she would be more than willing to help-“
“What if I lose control?” he begged, and Ratchet let out a rough sigh as he rolled his optics.
“You won’t, it’s not like you’re becoming a different mech. You still understand and know how fragile she is, you’ll still have your control,” he tried to assure him. Optimus sat there, looking up at the ceiling as he closed his optics…. This was going to be a long solar-cycle.
Seze walked through the village with a pep in her step. She had successfully gathered enough fruits and bugs for part of the dinner tonight, and there was also a celebration to be had, the arrival of the wind traders.
When she had dropped off the fruits she made her way towards her beloved’s kelku. Yet when she arrived she saw that Optimus wasn’t outside, and it was only Ratchet that sat by the dead fire pit. For he had shooed Bee and Mirage away so that he and Seze could have this conversation alone.
Ratchet had his optics locked onto her. It made her tail whip as her ears pinned, and she gave the alien healer a worried look as she made her way closer.
“Kxì, ma Ratchet.. is all well?” she worried, and the medic gave her reluctant nod, blue optics flickering from her to their kelku. (“Hi.)
“Yes.. everything is.. more or less, but, can I speak with you for a small moment?” he wondered, and the Blue flower nodded as she stood in front of him. He let out a small sigh.
“I need you to listen to me.. and if you don’t want to be around him after I tell you this I understand, and I know he will too, but you need to know.” At this her heart sank to her stomach as she felt the blood drain from her face. Her mind immediately went to the worst conclusion.
‘Was it something I have done?’
“Is he alright?” she worried.
“Mostly.. he.. he’s going through something right now, and I need you to understand that it’s making him act far different than he normally would be,” he began, and Seze nodded.
With that, Ratchet prepared himself, and put himself in the medical professional mindset he always held in moments such as these.
“Our species sometimes has something called a heat cycle.. which.. is an insane prime directive to.. mate.” Her eyes widened as blush flooded her face, and all she could do was stare at him.
“It makes us irritable, almost sick. It can feel a bit scary if you’ve nerved experienced it before. The sickness goes away after a few hours but.. he will seem much different, less patient than how he normally is.” Seze swallowed a ball of saliva as her gaze slowly moved towards his home.
They had only mated twice since his rite of passage, and both times he was sweet, gentle, and it was something they had both been planning on doing again soon.
Yet what Ratchet was saying almost scared her, for the idea of him being rough with her despite their size differences was a thought that sent a strangely delightful chill through her bones. As if her body didn’t know whether to feel fear or desire over it.
“That being said.. with that prime directive, our circuits and coding desire the presence of a mate, and if you already have one, that can relieve the stress of this process by tenfold.”
Seze slowly nodded as it hit her what he was saying, but she would have wanted to be there for him regardless. From what it sounded, this was painful for him, and the mere idea of him being in pain made her chest ache.
“If you don’t want to be near him while he’s going through-“
“No, I want to, I want to be there for him. That is my husband.. and I would do anything for him,” she breathed, throat tight with nervousness. Ratchet nodded as he gave Optimus’ home a small glance, handing Seze a few energon cubes.
“Before you see him, I would find a way to get him more fabrics.. blankets,” he said, and her head tilted in confusion as without question she took the alien’s strange means of fuel.
“Why..? We already have so many,” she said.
“Well, one of the prime directives during this cycle is to.. make a nest, to make a place that is soft and comfortable. Some scholars theorized it was initially so that it could be a place a sparkling could be born, and the carriers could use that nest to relax until that sparkling arrived. It showed that the sire could provide, and protect.” The Blue flower nodded once more, and she knew exactly where she could get more.”
“Tam, then I will be back, should I give him these as well?” she wondered, holding out the energon. Ratchet nodded with wide optics.” (“Okay.”)
“Yes, this cycle takes a lot out of us, and he’ll need all of the fuel and energy he can get.” Her grip tightened on the cubes as she held them closer to her.
“Then I will be right back,” she said, and turned around, making her way towards her kelku that was still inside of the village with the rest of her things.
Optimus writhed within the nest complied of her scent, cooling fans at high capacity as he groaned and pinched his optics shut. This was completely and utterly humiliating, painful, and uncomfortable in every sense of the word.
He felt nearly nauseous from hunger, but the idea of actually consuming anything made oil coagulate within his tank.
His processor was deviously thinking of every way he could ease this maddening sensation, this tension, and all of them involved Seze. It didn’t help the slightest that they had already mated in the past, so he knew all too well what was waiting for him, if she allowed it.
Her scent grew stronger, and it made his optics go ablaze. His audio receptors were up to full capacity as his gaze snapped towards the entrance of his home. He could hear each and every step, when to his horror and delight, she made her way inside.
Seze took timid steps, and when her eyes landed on her beloved, what she found nearly frightened her. Once again, she didn’t know whether she should have ran away, or willingly given herself up for him.
His optics were bright, locked onto her as they twisted and turned. He was curled up into a ball as he laid within his nest that Ratchet had told her of. He looked feral, animal-like. Hungry.
“Ma Yawne..? I.. brought you some tiretu for you..” she uttered shyly, and his gaze landed on those very blankets in her grasp. (“Beloved?.. blankets.”)
Slowly, dreadfully slowly he put his servo out, and Seze gave him the blankets. In a strange way, she almost felt confused. For she had expected him to nearly snatch it out of her arms, yet instead he reached for them politely, like he always would.
Her scent had flooded their home, coiling through his systems and his engine like a delightful oil fire. The softness of the blankets she brought nearly made him melt. Immediately he got to work.
He sat himself up, maneuvering these new blankets to make a far more suitable nest. This time around, his processor had Seze in it, and he tried to make it comfortable for her. Yet thanks to this new prime directive, it was merely only for two reasons. One of them made him feel horrible, knowing that she couldn’t even have children. Nor could she give him a child.
Seze watched as he worked quickly, with efficiency. It was quite endearing to her how he was so utterly focused on such a thing, and indeed, he was acting far different than he normally would.
“Are you… in pain? Is there anything I can do?” she worried as she watched, but it was almost like she wasn’t there at all.
He continued on working, fluffing up the blankets to make it nice and comfortable for her. Her scent had infected these blankets, making him want to practically drown in them. These were all mostly hers, and luckily, by this time, the ones the other village people had given him had lost their foul, foreign scent.
Finally, he answered. It wasn’t like he hadn’t heard her, in fact, it was impossible not to. He was highly aware of her presence, down to how she was staring at him and how her body merely twitched as she stood there.
“I.. see Ratchet told you,” he said, and she nodded.
“And you still wish to be around me?” he wondered as he finally felt satisfied, and that small part of the prime directive felt as if it had been satiated. He had proven that he could provide, and make a safe space for his future clan.
‘Just shut up!’ he snapped at himself internally, but on the outside only twitched as he stared at her, waiting for her reaction.
“Yes.. I do, and.. I want to help you,” she breathed with the smallest bit of fear, the first and only time she had ever felt a single hint of it towards him.
That fear didn’t stem from the idea that he would hurt her, she knew he would never do such a thing, not even in the state he was in. That fear came from this ravenous side of him that was so alien to her, as if she were speaking with a completely different mech.
Optimus’ nostrils flared as he gave her pleading optics, feeling completely and utterly horrible that this was happening at all.
“You deserve.. so much better. You are more than just some spike warmer for me, more than some toy. I- I refuse to-“ She took a step closer, and his optics snapped to her in response as his throat snapped shut.
“Yawntu.. I know that I am. You do not need to feel shame for something that is just a part of you, and who you are. I know.. that if I was going through the same thing, you would wish to be here for me, and help me, yes?” she wondered, though she already knew the answer. He nodded without a second thought. (“Loved one.”)
“So..” she said as she took another step, “allow me.. to help you, to be here with you for as long as you need.”
The sight of her hips swaying as she took her steps nearly made him tackle her, and his spark fluttered beneath his chest at the sight of her nibbling her bottom lip out of nervousness.
That prime directive forced him to move, and he reached out to put a servo to her hip. Seze obliged as she made her way closer, and he pulled her down onto the nest he had made for her.
Some how, this was more comfortable than the bed they had shared just a mere night ago.
“You did well, yawntu,” she cooed softly, and that was like the Primal Wellspring to his overdriven processor. He nodded as he gave her a small hum.
He caged her within his servos, leaning over her as she laid beneath him. This felt right, needed, and he gave her pleading optics as his forehelm furrowed.
“I- forgive me.. for all of this.. I- I feel so ridiculous, and it’s humiliating,” he confessed.
Seze’s gaze flickered down his massive frame that towered over her, eyes catching sight of the bright blue interfacial fluid that was still subtly leaking from his panel. It made her ears pin as she tore her gaze away, and she shook her head.
“You need not apologize, yawne, I love you and I am here for you.” Her sweetness was maddening, and it nearly made him snap. Yet not at her, Primus, never at her.
“I do not deserve your grace,” he breathed.
She nuzzled deeper into the blankets as she held her arms out to him. And the sight of her hips subtly writhing as they rolled made lubricant fill his intake.
“Come,” she uttered, and like a battle dog for its master, he gladly obliged.
He leaned down, slowly, treating himself as if he were some kind of carnivorous creature. He worried that if he went too fast he would lose his control, and he knew how important it was to be as careful as he could be with her.
Her scent intoxicated him, flooded his fuel lines and his innermost energon, controlling his every move. Without a word a servo landed on her hip while the other braced himself above her, and he began to indulge, to silence that instinctive drive that had been plauguing him.
His helm immediately moved to the hollow between her collar and jaw, taking deep breaths as he nearly engulfed her scent. His hot breath wafted against her skin, making it prickle as her tail whipped beneath him.
Normally his kisses would have been soft, gentle, but that Optimus Prime was nowhere to be found.
He nearly consumed her, dental plates biting her skin just enough to bring her pleasure, almost bordering on pain. Yet it was a pain that made her want more, that made heat flood between her legs that instinctively fell apart for him.
He attacked her throat with hot kisses, subtly sucking as he moved from one side to the other. Something within him was begging him, telling him ‘Mark her, claim her, make sure everyone knows she is mine.’
The servo on her hip migrated for a small moment, caressing her breast as his thumb put a delightful pressure on her nipple. The sensation made her arch herself into him, softly moaning as she whimpered.
Seze rubbed her face against his helm where she could, her own way of marking him, of rubbing her scent all over him. This he knew, and it made his spark go ablaze at the idea that she was marking him as well, claiming him in the same way.
He attacked her collar bones, her shoulders, her chest. For a small moment he came back up and gave her the kind, gentlemanly kisses that he had always given her before this. Yet the scent of warm lilac practically pulled him downward, pulling her bottom lip away with him.
His kisses trailed down her body, leaving small lilac splotches as his grip returned on her hip, and it tightened. Seze, though, wasn’t quite ready. So she grabbed his chin and pulled him back up.
He listened without a second thought, like he always did. Yet he nearly looked irritated, as if he had been interrupted during a meal, or an important briefing with his Autobots, or with Ni’alu.
“You- you are so good to me, Optimus,” she cooed as she softly panted, and that made him freeze as his optics widened.
Her hand traveled from his jaw, moving towards his neck cables as she caressed them sweetly. She knew how sensitive they were, just as she knew all the parts of his frame that made him melt beneath her touch.
She leaned forward to the best of her ability as she kissed those same cables, lips molding to them with sweet precision as she softly sucked. It made his optics flutter and dim as he softly groaned.
“You take such good care of me. You.. would be a good sempul, and I feel protected and cared for by you,” she assured him, praised him, and by Primus, if Seze had a spike like himself, those words would have made him open himself up for her right then and there. (“Father.”)
He wasn’t completely gone enough or a few of those words to not make a frown twitch at his lip. He let out a small sigh, and hated and loved how her words were like fodder for his processor in its current state.
‘I provide, I protect, she feels provided for, and cared for,’ assured himself, nuzzling against her as he caressed her thigh sweetly.
“I am only returning the favor, beloved,’ he murmured deeply as he moved his helm back to her neck, giving her neck even more kisses as his glossa tasted her subtly salty skin.
Without a word he moved her, laying her back down onto the nest as his servos pushed her legs open, and Seze felt her heart racing as she held onto his helm.
One servo then spanned over her entire stomach as it moved down, and when he got to her loincloth, gently and effortlessly untying it he breathed into her ear, making her see stars as she rolled her hips with a soft mew; he told her, voice deep and dark like thunder.
“Remember that I love you, my little loved one, alunta oe lu tsonta muntxa si tsonta nga na oe rä'ä..” (“Because I’m about to mate to you like I don’t.”)
*cut to a few hours later, Seze holding and coddling his massive helm while he rests under piles of blankets. Legs sore from such activities.*
*Yes, I’m evil and making yall wait but I’ll make a part two of this after I post THAT chapter I promiseeee.* 🥺😭
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