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Though there is none that shines brighter than him, Belial knows that Lucifer is the sun.
At least, of Lucilius's world.
He admits, even standing this close to Lucifer is bad for his eyes. Lucifer could sheathe those six blinding wings of his and he would still be gleaming. It's something about his aura, that pristine and unblemished glow, a steadfast dependability and efficiency that draws everyone's gaze towards him.
Yet Belial's eyes are instead trained on Lucilius. He watches as the astral's fingers trail over Lucifer's cheeks, a feather light touch that travels down the Supreme Primarch's jaw, his neck, his collar bone, until finally they settle on Lucifer's chest. They rest at the center of his torso, pale digits aglow, a serene smile on Lucilius's face.
For a physical exam, Lucilius sure loves to take his time with Lucifer.
Even after checking the condition of his core, Lucilius sees it fit to check the rest of Lucifer's body, squeezing his arms here and there, a thigh every now and then. It is a service reserved only for one, a superfluous treatment that is self-serving at best. Belial's gaze flickers at Lucifer's face, at how the primarch's eyes are still closed, at the lack of a flush on his pale skin. Really, he could be mistaken for a doll, if not for the way his chest rises and falls ever so slowly.
In other words, he is the perfect patient, albeit one that makes for a rather poor showing on his own.
Thankfully, the rest of the check-up does not last long. With a flourish of his pen, Lucilius quickly jots down what little notes he has.
"Belial." Lucilius does not look up from his clipboard, but Belial bows anyways.
"Right." He walks over to Lucifer. "If you want, I can slip these on you," he says, leaning the arm with the Supreme Primarch's clothes over to him.
"No, I'll be fine." Sky-blue eyes flutter open, and Lucifer gingerly takes his clothes. "Thank you Belial."
Belial chuckles under his breath, but he does not linger at Lucifer's side for long. No, the familiar swish of robes and the opening of a door beckons him away.
"Lucifer, come see me after your trip to the garden." Lucifer voices his assent with Lucilius's order, and that is all the researcher needs to hear before leaving the room, Belial in tow.
If one were to liken Lucifer to the sun, then it is far too easy to ascribe Lucilius to the moon. As they walk through the halls, others make way for the for the researcher, but otherwise do not pay him much heed. Though they give a glimpse, once they side-step him, they face away just as easily. Compounding matters is that even with his white robes, Lucilius himself blends into the shadows easily, completely unhindered as he carves his path. A pale light, but one that can make waves at his own discretion.
The walk to Lucilius's office is thus uneventful, if not surprisingly swift. Once inside, Lucilius wordlessly takes his place at the bed tucked in the corner of the room. He lays down, putting his clipboard aside before gathers more papers to review. It is as he settles himself, when the clothes that so cleverly hide his form rest, does Belial finally get to see the peak that is raised between his legs.
It is this moment, Belial thinks, when Cilius shines the brightest.
Not that a raging boner is ever not a good look on his creator, but it only adds to the beauty. Lucilius refuses to acknowledge his present situation, nor does he bother to call Belial over despite the fallen angel's clear presence in the room. He doesn't even spare a glance as Belial gets on the bed, not even twitching when Belial shifts and removes his clothes. Belial grins. Though it may be the same song and dance, one that is most likely seen as simply an extension of his will rather than an arrangement established long ago, he can never grow tired of it.
Even more so, Belial cannot suppress his laugh as Lucilius springs forth before him. "How impressive," Belial comments as he flicks Cilius's head, the member already slick. He takes the beads of cum that forms there, spreading it out along his length. "You've held up for quite a while now."
"Such a nuisance." Whether Lucilius refers to his cock or Belial (or both, both is always better), it doesn't matter. Belial will take it all.
And take it all is exactly what he does! In one fell swoop, Belial envelops Lucilius with ease. That much earns a reaction from Cilius, a quick snap of his hips accompanied by a faint hiss. Yet his face is still hidden behind his papers, his focus seemingly no less destroyed.
It's an endearing quality of his, how easily and naturally Lucilius denies himself. Even as Belial digs his fingers into his thighs, as he hollows his cheeks and drag his tongue along Cilius's shaft, the astral refuses to readily acknowledge his efforts. But those tiny gasps, the occasional thrust, and most damning of all is the way his legs fight to not squeeze together, only for Belial to pry them further apart...
Belial moans into Cilius's dick. What use is a sun if it can only ever provide light? He has no doubt that the Supreme Primarch would tend to Lucilius's needs if asked, but Cilius has never broached the matter with him. Why should he? Lucifer does everything he was created for, and beyond Lucilius's expectations at that. Much like Lucilius, Lucifer is focused solely on his goals, and that's all he needs to be.
Ahh, but for all that Lucifer is Lucilius's sun, Cilius is truly more akin to the moon. For all that they visually look alike, Lucifer does not squirm or arch his back with the right touch. For all that Cilius chooses to show one face to the world, for all that he seems as the level-headed brilliant researcher, the side that is hidden is the one that fascinates Belial the most. All his cracks, his shadows, his flaws, Belial will gladly drag them out and consume them all, even if Cilius will never praise him for his cause.
So he gulps down all that makes Cilius, relishing in his bitterness. When he surfaces from his high, he wipes his lips with the back of his hand, the other fiddling with his pants.
"Hey Cilius-" A kick to the crotch does wonders to interrupt the serpent. While he may be seeing stars, Belial smiles at the icy blue glare thrown his way.
"Get on with it."
Belial chuckles, the pain and Cilius's words filling him up to the brim until he overflows.
When Lucifer arrives at Lucilius's office, Belial is standing outside of his door.
"Ah." Belial lowers the hand that was covering his mouth. "You've come earlier than expected. Unfortunately, you'll have to drop by again later."
"Is he all right?" Lucifer asks, glancing past Belial. It is not often, after all, that his friend feels under the weather.
"He's fine. He's simply out of stamina." Belial waves at Lucifer as he walks away. "Follow me. There's been something I've been meaning to show you."
Lucifer blinks, taking a moment before he catches up to Belial. For a second, he sounded like Lucilius, though with more thought, it is not so surprising.
It's rather nice, Lucifer thinks, that Lucilius and Belial are as close as ever.