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The process was something that Vulkan was used too, now.
It was an odd quirk of anatomy, probably coming from Nocturn environment. The harshness of the land, the danger to one, for being pregnant for too long… The promethean cult thought that it was one proof, that human were descended and blessed by the sacred dragons that inhabited their land, to be able to lay like them.
People would have sex. And if conceptions occured, about six months later, they would lay a large egg, in which the development of their baby would finish, outside of their body.
Vulkan was not exempt of such an oddity.
He was… unsure on who was the other genitor of the clutch he was currently carrying. Horus had just been declared warmaster, at the triumph of Ullanor, and all his brothers and him and gotten swept away in the celebrations. If he was honest, he was probably carrying the progeny of multiple of his brother.
He groaned, as he felt his taunt, rounded middle contract. It was going to be time. His instinct were starting to flair up, and he knew exactly what to do. Of course, he would have prefered to be back home for the birth, but the situation would have to do.
He locked himself in his quarter. It was a private process, traditionally. Unless he got egg bound, he would deliver alone, far away from prying eyes. Just like the sacred dragons did.
He ran himself a large bath, caressing his gravid form. His belly was stretched taunt, and the apothecary had detected four eggs developing in him. Such a good clutch! He really was blessed. He could not wait to present to new children to their respective fathers, glowing with pride at the little being that he made.
If he had been on Nocturne, he would have walked to one of the large natural hot springs. The ones existing in large crystal cavern specifically for the egg laying process. Those had been used as such for millenia by people of the more traditional habit, as the minerals of the water and the heat helped the shell of their eggs in their first few moments outside of their parent's body.
The contraction were coming at a quicker pace now, and a sheen of sweat was building on Vulkan's muscular body. With a groan of pure pleasure, he entered the fuming water, wich would have been almost scalding for a normal human. But he was a salamander, a descended of the dragons, his body was made for such an experience.
He sat against the back of his tub, and spread his legs, still fighting the natural urge to push. With a low moan, he quickly pushed a hand inside his spasming pussy, trying to check quickly if he was dilated enough. He felt for his cervix, shivering at the sensations, satisfied to find it almost fully dilated. Soon, he could push.
He rested his head against the side of the tub, and tried to relax. The contractions came, quicker and quicker, and his tight clenched, until the overwhelming urge to push was too strong. He moaned once more, and slowly, he felt the large egg unter his birth canal.
They were sizable. And humans baseline would have probably died, trying to lay them. Even an astarte would have been in a world of trouble, trying to lay this giant. But he was a Primarch , and the largest of them. He healed so easily. As a result, the experience was nothing but a delicious, sensual thrill, and partly one of the reasons why he had wanted to lay those eggs alone.
With a pant, he let one of his hands fall under his belly, rubbing at his mount and clitoris, as sparks of pleasure were slowly igniting his body. He was shaking, the as the tapered end of the egg was slowly spreading his walls, until he could feel it reach his lips.
"Yes… please, please !" He begged uselessly, as he could feel his cunt slowly stretch, more and more. Both of his hands were between his legs now, one furiously masturbating his clit while the other placed itself under his opening, ready to catch his first pawn. His lips were now stretching thin, around the widest part of the egg, and he felt his orgasm crash into him, a loud moan making him drunk with pleasure. The spasme also helped him push the egg all the way out, and he slumped, catching the egg.
He took a moment to breath, as he slowly felt the next one take positions against his stretched cervix. Now, things would go pretty quickly. Still, he raised the egg with both hands, smiling at it with affection.
The egg was warm, and had a pretty ruby color, speckled with gold and blue. It was perfectly smooth, and he brought the eggs surface to his lips, kissing it. It was almost rather massive, even taking into account that it was a Primarch one. "Hello you" he gently told his first new baby, still oblivious in it's protective eggshell. Carefully, he put it on the side of the bath, wrapping it in a warm damp towel, like a little nest.
As he was doing so, the second egg seemed to rush out of him, almost as if trying to be undetected. He barely had to push, and quicky, he had the second eggs in his hand, much smaller, and mottled black and white. He had a pretty good idea who were the parents of those first two eggs were, and he grinned, imagining their reactions at being parent. But just as he was carefully wrapping the second one… a sharp stab of pain hit his cervix, and he was doubled over. Something was wrong!
He groaned, trying to palp at his belly, groaning at what he felt. Gritting his teeth, he pushed sone finger inside of his well stretched sex, trying to asses the problem.
… The egg was presenting sideways .
"Well aren't you a problem child." He growled. But at least, this was something that he knew how to deal with. With a big breath, he reached slightly past his cervix with his finger, and with a loud whimper of pain, started shifting the egg in the correct positions. It was anything but pleasurable, but he could endure such pain, for the well being of his future children. Some filament of blood were coming out of him at such a treatment, but, with one final yelp, he placed the egg in the correct position, and retracted his hand. Almost as if protesting the manhandling before it was even born, the egg then rushed his abused pussy, stretching him wide and fast. A moment later, it popped free, and he had to scramble to catch it.
This problem egg was a very dark, almost midnight blue, with a more rugged egg texture, and some fine white lines all over, almost like lighting. It was so clear now from whom he had gotten that egg. "Should have expected that." He said, an easy grin still taking place on his face. Even as difficult as this child might turn out to be, he would love them anyway.
The last egg was… Shockingly easy. Almost as if it was trying to apologise for its precedent sibling. He moaned gently,once more touching himself, and fully orgasmed on the egg, catching it in a post orgasming haze. This one was uniformly blue, a vibrant blue, a specific shade that Vulkan was very used to seeing. He grinned at the last of his clutch, and let it rest against his sibling, caressing the various eggshells. They were all drying off now, and emitting steam, so warm and alive and his. He had completed the egg laying ritual, in the traditional way, and Vulkan could not be more proud of himself.
He just could not wait to see the face of his brothers, when presented with eggs.