The months passed faster than Grud liked while he was raising children, he spent his days pampering his daughters and teaching his oldest sons how to wield a spear and how to lay traps for small game.
And on the night before the three month deadline for the expedition to gather, his wives pestered him into their hut immediately after dinner.
The moment they were within their doorway, his wives started getting more aggressive than usual, their hands glided predatorily over his body as they led him towards their love nest.
"Wait, what about the children? If you all are so ready, things will get loud." Grud said weakly as he looked around for his children.
"Don't worry love, we sent the children to sleep over at the neighbors. The house is ours for the night." Nita said seductively as she led Grud to the bedding by griping his erect cock. Over the years, his wives had become so skillful at pleasuring him, he did not even know when they removed his loincloth.
After they laid Gurd down, his wives stood before him and then began to kiss and caress each other as they slowly and sensually stripped.
As Grud enjoyed the show with his throbbing dick and balls twitching in excitement for what was to come, his wives were finger banging and groping each other, and none too gently at that.
Over the years of being thoroughly plowed, screwed, banged, shagged, bred, and totally fucked silly in all their holes by Grud, his wives had become more vigorous in their lovemaking with him and each other, they were even able to stay conscious most of the time during sex.
When his women were all wet and sweaty from their warmup, Grud took a while to appreciate how his women had grown over the years. They had all filled out a lot more, especially their tits, ass, and hips.
What Grud did not know was that the mutating agent in his body had collected and stored all the genetic information from his wives when he drank their saliva, milk, and other fluids, and shared them among his wives whenever he pumped them full of his jizz.
Over the years, his wives had taken on the most desirable features of each other to a lesser degree. This was displayed most prominently as Nita's and Silne's genetic information was carried over from Grud's semen and absorbed into the other wives' bodies, this made their tits and asses grow a lot larger compared to other women, and even after their last pregnancy until now, his wives have never stopped lactating.
Naturally, this caused his wives to attract a lot of attention, and Grud had to knock a few heads from time to time when some men tried to get slick with his wives.
And so, now standing before him were eight sex goddesses with their tits and pussy leaking with fluids, which included Mita who was still translucent but was now able to be as corporeal as any flesh and blood person when she wanted to be, her only difference was that she was leaking mana that looked like fluids, but it was a loss of mana she was willing to lose seeing what was going to happen soon, as the return on mana from after what Grud would do to her would be worth it.
They got down on all fours and stalked toward Grud and started kissing and licking him from his legs, up to his groin where Ida, Reta, and Oso stopped to service his dick and balls while the rest of the women made their way up to his nipples and mouth. All of this while rubbing their pussies and tits all over Grud.
While Grud was enjoying this full body service, Nita and Sonu came up beside him and whispered all the things they wanted Grud to do to them.
"All of our wombs are burning, we miss the Hot… Thick… Sticky feeling of your seed in our wombs" Nita said pleadingly in Grud's ear.
"It just does not feel complete without all of our holes filled by our man, to be thoroughly bred by our strong chieftain… Put a baby in me again!" Sonu said in his other ear, practically growling the last part.
The other wives who heard what their fellow wives said, grunted and moaned in agreement.
Through the haze of sex pheromones, Grud caught himself, "Wait, I thought we agreed that we would stop making babies for now, is it not too soon? Think about the well-being of the tribe, if we grow too fast we will not be able to feed the tribe."
Hearing that, all his wives giggled and Nita spoke up, "Oh my Dear Husband, while you are sending people on hunts, settling disputes, and going on hunts yourself, we women are the ones who feed the tribe, we know how much the tribe needs. And because you have been doing such a good job in bringing in food and also because we have the sea right next to us, we have been more prosperous than ever before. I am sure we can afford a few more children."
"Not to mention that our first born are old enough to look after their siblings sometimes. Besides, all of us are shamans now, and are sometimes given gifts when we help out our sister tribes that do not have shamans yet, so you do not need to worry, but now that you are going on another expedition, we will feel lonely without you, we want you to plant your seed in us before you go." Ida said while the others nodded in agreement.
'They have been sharing the burden of quite a lot of my duties as a shaman, and I really do miss the feeling of filling their wombs with my seed, and the satisfied look on their faces when they fall asleep after… alright, if they want another child, I as their husband my do my duty and give them one.' Grud thought as he grabbed Nita, who squealed in delight as he lifted her effortlessly and brought her down on his raging boner.
In one stroke, Nita's sopping wet pussy ate Gurd's dick all the way to the base, breaching her cervix and stretching her womb. The bulge of Grud's penis wearing Nita's womb like a sock puppet came up just below Nita's ribcage as Nita let out a scream of pleasure.
At this point, the wives had made it a tradition to take a minute to rub and massage the bulge before Grud really got going.
Grud enjoyed the fleeing of his dickhead being massaged through Nita's womb for a while before laying Nita on the bedding and started ramming her at full speed as the other wives were mesmerized by the bulge of Grud's dick repeatedly appearing and disappearing from Nita's belly.
After a few minutes of totally fucking Nita's womb stupid, Grud plunged in all the way and let the floodgate of his balls open, and soon Nita's belly started bloating until she looked six months pregnant.
When Grud pulled out, Uchi plunged a dildo as thick as Grud's dick into Nita to stop the leakage of precious semen. But in doing so, Uchi became the closest pussy to Grud's dick and was immediately taken from behind in doggy style.
Upon Grud's first violent womb battering thrust, Uchi was pushed forward into Nita's sweaty and heaving cleavage. And there she stayed as Grud mercilessly rammed her repeatedly.
While Uchi was getting railed, a mischievous Silne came up from beside Gurd and used her slender arm to invade Uchi's anus up to her elbow. This made Uchi release a muffled scream into Nita's tits as Silne alternated her thrust into Uchi's anus with Grud's thrust into Uchi's pussy.
What Uchi experienced was not multiple climaxes, but one continuous climax until Grud cumflated her.
When Grud did his final thrust into Uchi to fill her up with his jizz, he leaned forward to do it, trapping Silne's arm in Uchi.
This made Sline the next nearest pussy within reach.
Grud grabbed Silne's upper arms from the back and slotted his dick in between her thighs and slid his dick back and forth.
After a few strokes, Grud drew back his up curved penis until he felt the puffy lips of Silne's pussy on his penis's head, then jerked his hip upwards to insert his dick into her, then pushed his hips forward in a sudden thrust to invade her womb.
With that thrust, Grud observed as his pelvis smacked upon Silne's juicy butt, causing her fat ass to jiggle most pleasingly. Grud then did short rapid thrusts and looked on as her ass wobbled and sweat dripped down that juicy trembling ass, each short pelvis smack caused ripples to travel up and down her ass cheeks.
Grud could not resist the jiggle and needed to see it jiggle more. He released his grip on one of her arms and snapped Silne's ass, making her let out a short surprised but aroused scream. With each slap, Silne's pussy gripped and squeezed Grud's dick, and when he could not contain himself any longer, Grud busted a fat nut inside her womb while changing his grip of both his hand to her big, soft, but firm ass and held it there until her belly was nice and round.
As Silne's pussy was wringing the last few ropes of cum out of Grud's latest ejaculation, Grud noticed wet sopping noises along with moaning from his side. He turned to look at the remainder of his unbloated wives fisting and scissoring each other.
"That just would not do, I need to add a penis to your sex sessions." Grud said as he crawled towards his other wives to remedy this lack of penis in their current sex engagement.