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sirenscriptures · 2 months

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primarchs + fantasies

summary: basically just a ramble thirst post because i want to drag 30k/40k into my already mess of a blog. i’m still figuring out certain pieces of characterization/lore so be patient with me here <3 i am suffering this brainrot and dragging you down with me!

warnings/notes: nsfw themes (18+ only), fem-bodied depicted reader, mentions/depictions of exhibitionism, of course size difference, hints of breeding kinks, slight mention of blood drawing, bondage/rope play. (these are partial fantasies i think they’d have but also they are genuinely so touch starved i think even the slightest form of physical intimacy could make them combust. in a good way.)

featuring: lion el’jonson, fulgrim, leman russ, magnus, sanguinius, mortarion, and horus lupercal (pre-heresy)

lion el’jonson

look, if there’s one thing each of the primarchs could use in some way, it’s a fucking break. lion is definitely one of those primarchs. the man has always been on high alert, and has never truly known how to relax. that is, until he bonded with you.

the fact he’s found himself so close to you is quite a milestone of sorts. being a primarch of many secrets, you can assert that he isn’t someone who trusts easily. he doesn't let many others know what his deeper thoughts contain, not even some of his own blood.

however, it’s almost like he’s a different person in your presence. when he’s with you, he feels a profound sense of peace, like he can shut his mind off from his usual stressors and worries. especially during your alone time.

but it’s when he’s completely alone (a rare occurrence) that his thoughts tend to wander more than usual. it isn’t a total shock in the slightest when all he can think about is you. but when his thoughts are crowded with curiosities of what sounds you’d make while on top of him and how you’d feel wrapped around him…yeah it gets a little concerning to someone of his stature.

the thoughts of you like this start small…then they bloom into much more , to the point where if he even looks your direction when in this state of mind he’s a stuttering, flustered mess. a completely rare state for a primarch to be caught in, yet here we are.

so, it’s safe to say that while lion isn’t one to deeply “fantasize” like some of his brothers might, his intrusive thoughts about you certainly have a habit of spiraling and he has to physically slap himself to snap out of it.

fulgrim

in terms of fantasies, where do we even start with fulgrim? ever since you let him get close to you, whether that be on a personal or physical level, it was like opening pandora’s box. when you get him started, there is no going back.

it doesn’t have to be much to get him started with you. just your beauty alone and seeing you smile at him could get his dirtier thoughts racing. (horny bastard <3)

the fact that you were totally oblivious for a while of the power you held over him was amusing at times. though he was much bigger than you, he often thought about what you would do if he let you take the reins over him.

even just the thought of your soft hands running over his bare body could make him shiver. he could picture perfectly how beautiful you’d look if he had you on top of him. but he could also picture how beautiful you’d look if he had you in front of a mirror.

the way your delicate frame would lean against his chest as he fucked into you, massive hands roaming all about your perfect body…

most of the time he has to stop himself from thinking any further, for just the thoughts alone aren’t enough. maybe he’ll show you what he means when you’re alone with him in his chambers.

leman russ

if you want to delve into literal ferality, it is absolutely leman’s brain. and his actions, of course. so it isn’t far fetched to say his fantasies about you are in the same realm as his normal thought processes.

now, just because he is one of the more “feral” primarchs doesn’t mean he lacks complete restraint. but when it comes to you, let’s just say his restraint goes a bit…out the window if you know what i mean.

when his mind does wander and you’re not around, he tends to imagine showing you off. exhibiting how well he can pleasure you and how good you look while he does it to you. he doesn’t mind those of his legion seeing him with you like this, and even when you two are alone during these moments, he almost wants someone to see.

he would love to display the way he makes you whimper and squirm around him while rutting into you. though, he won’t let anyone get the wrong idea. you’re his, and he won’t let you forget that in the slightest.

but that’s not even half of what he’d like to do to you. and you can tell so blatantly in the way he teases you, unashamed of who’s around when he makes his usual remarks. but at the same time, he does it all out of love. he knows how annoyed you get from him pushing your buttons all the time, but he can tell you wouldn’t change it for anything.

magnus the red

for someone who sees most physical intimacy as a “waste of time” like a few of his other brothers, he certainly doesn’t stick to that thought process when it's you he's thinking about.

with magnus being as knowledgeable as he is, it genuinely frustrates him when he can’t figure out at first why he feels this way about someone like you. yet the more time he spends around you, and the more you show how open you are to learning from him and that you actually listen to him, the more these feelings start to increase.

in a strange way, he feels comforted by you. though when he’s closer to you than usual, these feelings of comfort seem to…deepen into more than he first expected.

even though he can’t pinpoint it at first, he finds that every time he’s away from you, the want for your presence grows within him like some sort of hunger. yet, it’s now laced with the craving to feel your touch.

his mind is generous in being able to envision you beneath him, body trembling with arousal as his touch travels your bare skin, admiring and caressing every inch of you. all of his senses are ablaze; the craving for your touch, voice, scent, everything becoming too much for even someone of his stature to endure.

shaking away these thoughts is much more of a challenge than magnus would first anticipate. but now that he’s come to this self discovery, he doesn’t want to waste anymore time merely thinking about it.

sanguinius

while sanguinius is the more compassionate of the primarchs when it comes to overall personality, don’t let that fool you. when this man gets down, he’s an absolute freak.

on a serious note, the one thing sanguinius loves is spoiling you, on all levels, of course. but he just has a little bit of extra fun when he gets to do it to you physically. he does love when you return the favor, but if he’s being completely honest he likes it more when he gets to please you.

when he’s with you in an ordinary setting, he doesn’t let his more “sinful” thoughts take over. out of many of his siblings, he is certainly one of the most restrained and can control himself when it comes to feelings such as these. one of the lucky ones, he supposes.

but despite being able to hide it, you do make it quite difficult at times. it can be anything that triggers that burning within him—the way you unsuspectingly bat your eyelashes when you stare at him, or when you look so bashful when he greets you with a kiss on your hand. or even when you accidentally brush up against one of his wings. and you aren’t even aware you do so much to him physically…

yet there’s not much that gets him going quite like the thought of driving you absolutely mad with pleasure (much like fulgrim if we’re being honest here). whether it’s the thought of how you’d react to his head in between your thighs until your legs tremble uncontrollably, or how pretty you’d sound when he drains just the slightest bit of blood from your tender neck…

sometimes he’s left heavy-breathed at the thought, and you’re not even in the same room as him. if only you were aware of the effects you had on him. though, something inside sanguinius felt as though it wouldn’t be a mystery for much longer.

mortarion

believe it or not, mortarion is not a total stranger to these kinds of thoughts. though, it’s much more intensified since you’re the only person he’s had these thoughts about.

with mortarion being one of the more distant and reserved of his brothers, his sex drive is one of those things he’s never had to deal with since he’s never felt this way about anyone else before. so it’s no surprise how easily pent up he can become.

even just the slightest things you do can get him electrified, and the poor, touch and affection-starved soul doesn’t even fully understand why. the way you smiled at him with genuine fondness from a distance the other day? he’s still thinking about it for weeks. the way your hand gently brushed against his face by mistake? still has him reeling even when he’s in your presence.

the way his thoughts of you overwhelm him is far from easy to deal with, and you immediately notice the way his behavior changes in response to these newer sensations.

it’s so much worse when he’s away from you for long periods of time, though. his mind is racing with everything from how beautiful you would look tied up in various positions; the imprints of rope staining your soft skin, to what sweet sounds he could get you to make in response to his mouth in between your legs.

his poor legionaries when they have to deal with him in this state…he’s so helplessly tuned out from everything and they have not a clue what’s going on with their primarch. but he won’t have to worry much longer, for he’ll be venting his sexual frustrations out on you when you’re both reunited.

horus lupercal (pre-heresy)

honestly, what doesn’t horus think about when he’s thinking about you? not many people can make his mind wander to even the most dangerous of places like you can. while he isn’t sure how this all started, he is far from complaining. honestly, what doesn’t horus think about when he’s thinking about you? not many people can make his mind wander to even the most dangerous of places like you can. while he isn’t sure how this all started, he is far from complaining.

the way he is around you is his usual self, but his thoughts about you aren’t restrained in the slightest. you’re so captivating, and while he wants to hang on every word you say to him, he can’t help but fantasize in the process.

horus doesn’t expect you to have a very strong effect on him at first, yet he’s proved wrong very quickly when he’s away from you. when he’s finally alone is when it hits him.

he thinks about how much he’d love it if he had you all to himself. he could imagine spoiling you in every way imaginable, but especially physically. he could imagine all the noises he could cause you to make, and all of the sensations he could make you feel. but most of all, he could imagine breeding you—filling you up with his seed to where you know that you’re his.

from there, you’re the cause of all of horus’ sleepless nights until he gets to see you again…

#primarch x reader #warhammer fanfic #primarch smut #⋆｡𖦹 °.🐚 — sea’s scriptures #☾ — nightly yearning #primarch headcanons #horus lupercal x reader #leman russ x reader #magnus the red x reader #fulgrim x reader #lion el’jonson x reader

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