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Guilliman/Perturabo/Corax sequel to the Guilliman has sex with everyone fic, continuing from where absurdfact's WIP left off (sorry I randomly stole from your WIP with barely a POV change! but you and sabbatine have been talking about this pairing and it just sounded so fun). totally fluffy and substance-less PWP ahead
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Guilliman had beat around the bush, presumably in the name of discretion and not gossiping about things told to him in confidence. Corax was neither too stupid to read between the lines nor too blind to see what was right in front of him.
Corax was used to Perturabo being cold and sharp, being unconcerned with risk or losses, being unapproachable and unfriendly. He had gone along with Guilliman’s request to have a threesome because he’d expected it to be casual. He’d expected it was as likely as not Perturabo would refuse, and he wouldn’t have given it odds that good if he didn’t know Perturabo had said yes to Guilliman before. Guilliman had alluded to Perturabo’s lack of experience, but Corax had assumed it was from lack of interest. He wasn’t exactly a Fulgrim himself, or a Guilliman these days.
Perturabo’s kiss had been clumsy, and he continued to hesitate to take initiative when Guilliman didn’t urge him on or give him specific permission to do more. Perturabo looked at Guilliman like he’d hung the stars in the sky and melted against his touch.
Corax hadn’t expected the shyness. He hadn’t expected the gentleness, or the care Guilliman took to be careful in turn. He was surprised how strongly Perturabo was responding to that, and critical of his own surprise. Had anyone else tried to reach out to their brother? Who didn’t want to be treated like a human instead of a hammer or a hero, whatever the rhetoric about how they were supposed to be was? No wonder he was so obviously infatuated with Guilliman, who was kissing him like that, stroking his face like that.
‘Corax?’
Corax met Guilliman’s blue eyes and nodded to him, hoping his brother would understand that he understood. They kissed softly, but Corax didn’t pursue any of the things he would have done if they’d been alone in favour of turning his attention back to the Lord of Iron. Perturabo just seemed to need it more.
He felt more confident than their first kiss as he broke away from Guilliman and kissed Perturabo again. Perturabo looked at him more suspiciously than he did their other brother, but he leaned into the kiss like a flower reaching for the sun as it went along.
One of Guilliman’s hands found its way to the small of his back as they kissed, and the other to stroking Perturabo’s shoulder. He was smiling, and Perturabo smiled back, slightly, to both of them, reddened lips curling up at the corners sweetly.
Corax had to kissed Perturabo again at that, wrapping his arms around him and licking at his lips until they parted. Even for a primarch, his shoulders were broad and his body thickly corded with muscle. He tasted like the wine they’d been drinking earlier, a good vintage from Prospero. He groaned into Corax’s mouth and tightened his fingers in his hair.
‘Good?’ Guilliman asked when they finally pulled apart.
Perturabo nodded, not quite meeting either of their eyes. ‘What should we do now?’
‘Undressing would be convenient at this point.’
Corax quite agreed, and manage to remove his clothes much quicker than his brothers did. They kept distracting each other from the task, getting in their own way with more kissing, but Corax could certainly understand why each centimetre of exposed skin would make one want to touch, even if it was inefficient. By the time all their clothes had been kicked off the bed, Perturabo was flushed and straddling Guilliman, pressing their bodies together.
Corax couldn’t resist tracing the contours of his back with his hands, feeling the coiled strength in his muscles and the way his back arched against the touch. Corax nuzzled his neck to get the scent of him and chewed gently where it met his shoulder, and Perturabo cried out in unrestrained pleasure that echoed in the air.
He did it again and Perturabo made a chocking sound almost like pain, burying his face in the crook of Guilliman’s neck and grinding against his hip. Corax wondered if they should be dialling back and taking it slow, if the overstimulation of both of them touching him was too much.
‘It’s alright,’ Guilliman murmured, and continued with a string of soft nothings, arms around his waist. ‘I’m glad you like this. I shouldn’t have waited so long to do this again.’
‘I missed you,’ Perturabo whispered tentatively, hesitantly, like he feared such a small, obvious admission was giving away too much. Corax felt a sharp stab of anger at that, that he would think wanting someone was imposing too much, or that he was leaving himself open to be an object of mockery, or whatever it was he thought.
‘I’ll act sooner then in the future. I would be happy to have you approach me as well, anytime.’
Corax wasn’t good with speeches, too sharp and brusque aloud to be an orator, but he wanted his brother to feel loved. It was already difficult to remember what he’d been thinking when he’d been framing this as conflict resolution for a complicated campaign. He’d never been close to Perturabo, never thought of them as having a great deal in common, but he didn’t want to think someone so near him had been so unused to pleasure and so in need of him and he’d ignored it.
He pressed against Perturabo’s back and kissed and sucked at the back of his neck, listening to every sharp gasp and soft sigh.
‘More. Please,’ he finally ground out.
‘Do you want to lie back? We can both keep touching you.’
Perturabo shuddered at that, and Corax and Guilliman backed away enough they could ease him down into the sheets.
Corax put a hand on his thigh and kissed down his stomach. ‘Can I suck you off?’
‘Yes. Ahh--fuck, Corax.’ Perturabo’s voice broke as Corax licked at the head of his cock experimentally before taking him in his mouth and sucking.
Corax put his hands on Perturabo’s hips to keep them still and ran his tongue along the underside of his cock. Perturabo was trying to stay still, but his hips kept twitching under Corax’s hands. He admired his brother’s self-control as he tried to be considerate and liked feeling how much he liked it.
Perturabo’s moans were only interrupted when Guilliman kissed his lips as he leaned over him and stroked his face. His head was half in Guilliman’s lap, both his hands gripping one of their brother’s tightly.
‘He’s good at that, isn’t he?’ Guilliman continued in Perturabo’s ear. Corax rolled his eyed. ‘It was a compliment,’ his brother shot back.
‘You are,’ Perturabo agreed through gritted teeth. ‘Amazing. Corax...’
He could feel he was close and took him in as deeply as he could, sucking him through his orgasm and swallowing around him. Perturabo cried out beautifully as he came and was whimpering softly by the time Corax pulled away, licking his lips.
He kissed Perturabo, still too out of it to really respond, and shared with a long, lingering kiss with Guilliman.
‘What do you two want to do now?’ Guilliman’s cheeks were flushed and his cock hard, but he always seemed able to think and to keep in mind his intentions of facilitating relationship with his brothers.
‘You two can fuck. I don’t mind watching.’
Perturabo made an unconscious, inarticulate sound in response to that. Guilliman leaned over to ask him, ‘Do you want to? Do you want to get some rest before we do anything else?’
‘I’m not delicate. I want you. Let’s not wait.’
‘Alright then.’ Guilliman coated his fingers with lube as he moved above Perturabo to find a good position to kiss him while reaching between his legs.
He really didn’t mind watching. They were both gorgeous like that and gorgeous together. Guilliman was handsome, in a plain and unassuming way Corax found more appealing than some of their more ostentatious brothers. Perturabo was always solid and strong, but for once he looked happy too, flushed and desperate and wanting. They kissed no less passionately for being careful, and moaned as they moved against each other, smiling at giving each other pleasure.
He wasn’t at all ashamed to take his cock in hand as he made himself comfortable. He could still taste Perturabo on his tongue as he watched him buck against Guilliman’s fingers. Guilliman was tousled as well, looking at Perturabo with almost comical sharp focus, and Corax remembered perfectly well how it felt to have the measured force and methodical technique of the XIIIth primarch turned to getting him off. His erection throbbed in his own touch, the grip and the arrangement of calluses and scars familiar, his skin too warm and sweaty.
He could feel his pulse jump as Guilliman pressed inside Perturabo, and they both groaned. Guilliman stayed still for a long time, until Perturabo pushed his latest kiss away in order to gasp, ‘Move already!’
Guilliman moved and Perturabo arched into it. He never stopped being careful, even as the rhythm of his thrusts became erratic. Perturabo soaked it up, the heat of their bodies moving together and the gentleness.
Guilliman kept up a string of warm murmurs. ‘You feel so good, I love doing this with you, I’m glad you like this.’
‘Why are you...’ Perturabo began, but he never finished and bit down on Guilliman’s shoulder instead. He groaned and shuddered all over as he came inside him. Corax felt a sympathetic shudder run through him as well.
Guilliman kissed him again, softly, lovingly, before rolling off him for them both to lie panting on the bed. ‘Corax?’ he asked eventually without looking up. ‘You can come back over here?’
Corax didn’t mind finishing himself off if they’d exhausted their passions, but he did want to touch. He crawled across the bed. He wanted to do all manner of things, but should switch his mind into tactical planning mode to decide through the swirl of desire what he wanted most, what his brothers would like most. He should be careful and considerate too.
Perturabo put a hand on his arm and he turned to look at him. ‘Fuck me?’ Perturabo asked, lips parted and pale blue eyes dark with desire, legs still spread as he sprawled on messy sheets.
‘You want me to?’
‘I said so, didn’t I?’ the Lord of Iron snapped, and that was so familiar a tone Corax had to smile. He turned more tentative, ‘If you don’t want to...’
‘No, I do.’ He tried to think of something more to say, but ended up stupidly repeating, ‘I really do.’
He leaned in to kiss Perturabo, hoping that would communicate more, and swung a leg around to straddle his hips.
Guilliman found the lube again and reached over to spread it across Corax’s cock. Corax nodded and groaned his appreciation. He wasn’t going to last long and wanted to be inside him when he came. At least there wasn’t a need for any more preparation, and he could just guide himself inside that waiting body spread out under him.
Perturabo was hot around him and wet with Guilliman’s come. It was too good and he wanted it to last, wanted time to stroke over inch of his skin, wanted to kiss him again and again. His thrusts were too sharp, he was too close from the clench of muscles around his cock as Perturabo wrapped his legs around his waist, but he could hear when he’d gotten the angle right because his brother moaned and spasmed around him.
He was hard again and Corax reached down to stroke him as he fucked him. ‘Corax, Corax, Corax, thank you...’
When he came, he saw stars behind his eyelids and pressed his face into one of Perturabo’s amazing shoulders until they faded, still tugging at his cock. Perturabo followed soon after with shuddering jerks of his hips as Corax helped him through his orgasm. He couldn’t help but collapse half across his chest, though he worried he’d be uncomfortable heavy.
Guilliman rolled over to curl up with them, pulling Perturabo’s head on his shoulder and tangling their legs together, an arm across Corax’s back to rest on his hip. ‘Feel free to make use of my bed for as long as you desire, tonight or any other.’
Corax snorted at the thought of Guilliman kicking them out of bed after something like that.
‘I’d thought this going to be a one-time thing.’
‘We all liked it,’ Corax said simply. He wasn’t sure how to say more than that, Those words seemed inadequate to describe that he had liked it because sex was enjoyable, but he had liked every more how Perturabo had lit up with it. He wondered if he’d even meant the threesome or being touched ever again at all. ‘I have no objection to doing it again with either or both of you.’
Perturabo gave him a look almost as soft with hope as it was confused, like an animal inching closer to a prize while still prepared to bolt at any moment. Corax stroked his side comfortingly, and Perturabo wound an arm around his shoulders, running talented fingers through the longest strands of his hair.
The tension had gone out of Perturabo’s muscles and Corax smiled against his skin at that, listening to his brothers breathe peacefully as they fell asleep.