By the time Grud washed up and made it back to the Rock Skull tribe's camp, he had calmed down enough to readjust his now flaccid dick into a more comfortable position because instead of hornyness, there was another feeling taking hold of him at the moment, hunger.
And he was just in time for an early lunch. Apparently, word of his exploits and the tribe's recent windfall from betting on him had gone ahead of him and reached the ears of the women currently manning the cooking fire.
When he asked for some food, he was greeted by a swarm of women who practically dragged and sat him down beside the cooking fire, then started loading food in front of him.
Iko and Rae were there and knew from what Nita told them that Grud could eat for four people or more, the two older women started getting more food for the fire, and when Rae asked Grud's wives if they wanted any food, Nita whispered to her mother with a knowing look "We are saving our stomachs for later."
This reply made those who heard it and in the know blush, fortunately, it was only Rae and the six other wives sitting beside her while Grud was too engrossed with stuffing his face.
When Grud soon noticed his wives were not eating and asked "Are you all not hungry?" Nita smiled at him while picking a piece of food stuck to his cheek and said "Don't worry husband, we will eat later, just enjoy your meal."
Grud just took her word for it, shrugged, and got back to eating.
—
By the time Grud was done eating his fill, he had eaten enough for eight people which made him have a satisfied distended belly, and was escorted back to his tent by his wives who were more clingy than usual, not that he knew very much about his wives besides Nita.
When that thought entered his head, he felt a bit guilty about Ida 'Ever since we were married, I did not talk much to Ida or my five new wives, most of the time we spent together was just having sex with them until they passed out, then I would be busy the rest of the day hunting and going for the Great Hunt until I come back and release my pent up seed into them. I need to find some time to get to know my wives better.'
When they entered their tent, Grud's wives laid him down on his bedding and without another word, his wives started stripping their clothes, and as Grud reached down to his loincloth to join them in their nakedness, his hands were stopped by Ida's "Please let your wives have the pleasure of undressing you."
As Ida said that, Sonu and Oso came up to him and started undoing his loincloth, when Grud looked at them, they were actually salivating. Being baptized inside and out by Grud's cum for almost an entire day on their first day of marriage had changed something in the five new wives, they were becoming addicted to his semen.
The warmth, smell, taste, texture, how it felt as their husband's seed slid down their throat and bloated their womb. It had started to change the five new wives as it did to Nita and Ida, it was now a deep craving that made their pussies moist, their wombs tingle and their nipples harden when they were near Grud or thinking about him.
As Sonu and Oso were undressing Grud's loincloth, Oso became impatient, got in front of Grud's crotch, yanked down his loincloth, and got an uppercut from his dick making Oso stumble back in surprise. So Sonu took advantage of Oso's surprise and grabbed Grud's dick to start applying the techniques she learned from Nita.
Sonu first stoked down on Grud's shaft, releasing the rest of his dick from its foreskin then started licking around the underside of his glans before moving her tongue to play with his urethra opening. When Oso recovered, she saw that her target was taken from her, pouted then settled to suck on Grud's shaft while squeezing his balls.
While Sonu and Oso were handling his dick, Ida closed in on his face and started tongue wrestling with Grud, as they swapped saliva, something caught Gruds eye at the corner of his vision.
He saw his wives pairing off, Nita was deep kissing Silne while groping her THICC ass, and Reta and Uchi did not waste any time and were intertwined with each other and licking each other's pussy.
'It is good to see my wives getting along.' Grud thought to himself.
After a few minutes of his dick and balls being teased, his balls twitched and he grunted "My seed is coming!" then proceeded to hose down Sonu with jizz until Oso came in as backup and clamped her mouth on the cum fountain and started swallowing as fast as she could until Sonu could take over.
That was when the thick smell of his cum attracted the other wives to come get a taste and empty his balls.
—
After all his wives had their fill of his cum and Grud's balls were feeling lighter, they all laid in a cuddle puddle and as a family, got to know each other better while chatting and laughing with each other.
This continued until the call for dinner sounded and they went to join the rest of the tribe. After dinner, Grud was flagged down by Froll.
"Grud, follow me, those of us that made the bet got something for you." Then Froll led Grud to the chieftain's tent where a pile of goods was sitting there and Froll presented it to Grud, "This is your cut of the bet we made, after your showing of bringing in that Dire Bear, you have brought great honor to the to yourself and the tribe, keep it up, especially for the upcoming expedition."
Grud beamed at the compliment and gifts "Of course, I will keep trying my best for the tribe!" Froll nodded and then looked at Grud's injuries, the big scratch across his chest was already scabbed over but the bruising was still a dark reddish purple.
Froll huffed and said, "I have seen how fast you recover, but I still think it would be better if you take a few days to heal before you begin your shaman training with the Chief Shaman, I will Ask Dhuk to inform the Chief Shaman of such, for the next few days until you recover, rest and enjoy yourself."
After that, they had some small talk and said goodbye. Grud then called his wives over to help him transport the gifted goods back to their tent and retired for the night.
After Grud and his wives were done organizing their new possessions, Nita and Ida started undressing to prepare for their pussies to be pounded and the five new wives took their cue from them and started undressing too.
But instead of the rough cervix pounding sex they usually had, Grud just waved at them "We are not doing that tonight." he then patted both sides of the bedding they used to sleep on, "I was thinking we continue where we left off before dinner."
Hearing the words that came out of Grud's mouth, Nita had a worried look on her face and came up to Grud to feel his forehead, "Grud, are you feeling ok? You never refuse sex," Nita's face began to tear up, "Did the Dire Bear hit you on the head? Or did it hit you in the groin? It seemed to work fine earlier."
Grud chuckled as Ida looked a bit worried while the five new wives just looked confused "No no, my love, I just realized today that besides having sex with all of you until you all pass out, besides Nita, I have not gotten to really know the rest of you, and I find what we did earlier was nice."
Then Grud stroked Nita's cheek, "But that does not mean you cannot suck out my seed later." Nita held his hand against her face and replied "Or we can take turns sucking out your seed while we get to know each other."
Grud grinned, "Now that's an idea." without another word, his wives had his loincloth off and cuddled around him with all their soft squishy bits pressing up against him and each other while chatting and giggling the night away until they all fell asleep, obviously Nita volunteering herself to be the first one to suck Grud's dick.
—
When Grud was finally deep asleep, the mutating agent in his blood got to work, there were injuries to repair but more importantly, (as the injuries were not life-threatening), there was a new source of genetic material to mutate the host body with.
As it sampled the Dire Bear's genetic material, it found that it could further improve the host's sense of smell and proceeded to do so, this made Grud's nose twitch and itch in his sleep.
Besides a few other negligible improvements to other senses which it also proceeded with, the big ticket mutations were the improved skin and muscle structure.
The mutation of the host skin to make it become tougher went without any issues and made Grud itch all over his body, this made him start scratching his whole body in his sleep and waking his wives.
As for the improved muscle structure, the mutating agent ran into a problem with that, after feeling out the whole body and how it would mutate, the mutation agent had to make a few changes.
It triggered the growth hormones in the host body and sent them into overdrive in accordance with its specifications to grow the body to accommodate the mutation for the improved muscle structure.
The host body began to grow taller, and wider, and bone mass increased and became slightly denser to support the new body, thousands of different changes and balances were occurring in the host body so that the host will not kill himself by simply moving.
In order for the host to survive the mutation, it had to increase the toughness of all the organs, especially the host's penis and testicles, they had been under more stress than usual lately.
The mutating agent calculated that all this mutation will take up quite a lot of energy and biomass but not to a crippling point, so there should be no problem. After seeing all the growth and mutations going on without any issues, it decided its work was done and became inactive again.
—
Nita and the rest of the wives were rudely awoken by elbows and knees bumping into them, when they turned to find the culprit who interrupted their sleep, they were met with Grud furiously scratching himself.
After a while of his wives trying to prod him awake to ask him what was wrong, Grud suddenly seized up, a look of pain grew on his face and his body started heating up, making sweat start pouring from all over his body. After a few seconds of seizing up, veins started popping up from under his skin all over his body.
When Reta lit a fire from some of the dying embers in the fireplace, all the wives finally saw the state of their husband, his whole body was rigid with his hands balled tightly into fists and all his limbs hyperextended and locked in place when his wives tried to move his arms.
Nita looked at Ida and said urgently "Go get shaman Dhuk! Hurry!" which snapped Ida out of her panic and ran out of the tent.
When Dhuk arrived with his satchel of herbs, he found Grud laying nude while two of Grud's wives were wiping away blood that was dripping from his orifices, while the others were changing the wet furs draped on his forehead, armpits, and groin in an attempt to bring down his temperature.
Dhuk grumbled, "Not this again…" and went to Grud's side to start mixing and grinding herbs.