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Mutant Rage	By : Kanjam Category: +M through R > Rage Views: 2092 -:- Recommendations : 0 -:- Currently Reading : 0
Disclaimer: I don't own the Rage game series, though I do definitely recommend that you play it. I make no money in any way from this story.

Chapter List
- 2
- 3
Chapter 3! Look at that!

Fritz was… A welcome guest, to say the least. After the initial introductions (which included quite a bit of bared fangs and claws) the Family accepted their new member with open arms. Slime filled arms. Fritz still reeked of human, after all, and the Family didn't appreciate the smell. The first place the scientist was shown was the GoodPool, where he was treated to a bath in GoodWater that closely resembled a form of water torture. Afterwards, he was thrown into a pile of cuddling mutants, where he was rubbed against and smothered with all forms of mutant flesh.
Fritz, through the entire process, never once dropped his smile. He found their rituals amazing, the GoodPool to be a wonder, and the mutant pile to be "A brilliant display of their pack instincts and inter-personal bond building." He resisted a little when Caesar pulled him out of the pile, but didn't fight it.
"You don't want to be in there come sun-down." Caesar warned, patting Fritz' shoulder, "Unless you want to get a real good look at their 'inter-personal bonding.'"
"Why, that sounds amazing!" Fritz replied, oblivious, "I'd love to be a part of it, if I'd be allowed!"
"They fuck."
"Ah."
Fritz dropped the subject, but still seemed a little disappointed at having to leave. Caesar figured that one day, if the human was comfortable with it, he'd let him join in NiceTime. As it was, however, he didn't want to risk spooking the Mutants any more for one day. Fritz couldn't actually communicate with them unless Caesar was near, after all. Rather, Caesar brought him up to his personal chambers on the top floor, where he was introduced to FirstChange.
"I've never seen a pregnant mutant before!" He gushed, kneeling so he was at hir height, "Well hello there!" Caesar relayed the words through his mind to FirstChange, the process taking less than a second.
'PackBoomSticker strange. Makes sounds at this ones belly.' FirstChange said, absently rubbing the bulge in its abdomen.
'He think there's a tiny Family Member in there.' Caesar informed, prompting a laugh from FirstChange.
'Boomstickers strange.Why would this one eat a Family Member?'
"Has she said anything?" Fritz asked excitedly.
"Mutants don't get pregnant, Fritz." Caesar informed, "I tried to explain the concept to hir, but shi finds it puzzling that Boomst- er, humans would eat their own kind." Fritz looked back at FirstChanges stomach, suddenly curious.
"If she's not pregnant, does she have some sort of disease? That could be equally interesting."
"No, shi's fine. In fact, I suppose saying that shi's pregnant would be closer to the real thing." Caesar gave some instructions to FirstChange, "Watch."
FirstChange waddled over to Caesars bed, lightly laying on hir back and spreading hir legs.
"Oh. I had no idea they have both sets of genitalia." Fritz observed. FirstChange ignored the human and continued, hir abdominal muscles squeezing the Good contained inside her. The mutants pussy gaped open, giving hir audience a rather good view all the way down her tunnel. The entrance to hir womb followed a few moments later, gaping open to allow a gush of fleshy Good to spill from inside hir. Fritz jumped a bit at the sight of it, having been blissfully unaware of where the Good actually came from. The rush of Good was over rather quickly, leaving a now much thinner FirstChange laying on Caesars bed and rubbing hir stomach.
'This one is so empty now. Singer fill with Good soon, yes?' Shi asked, sitting up. The Good that shi'd just birthed was being absorbed and spread throughout the main mass, the pile growing smaller as time passed. Fritz stayed where he was, from shock or awe Caesar couldn't tell.
"Did that satisfy your curiosity?" Caesar asked, looking at the still kneeling researcher.
"I should think so." He replied, standing rather slowly, "For now, at least."
"That's the spirit." Caesar laughed, clapping his hand on Fritz' shoulder. "You'll have to grow used to things like that. It's a pretty big part of their culture."
"Is that why you seem to have grown such… Phallic appendages?" Fritz questioned, gesturing to the newly reformed tentacles sprouting from Caesars back. "And, for that matter, to have grown such a large… phallic appendage?" Here, he gestured to the titanic sheath that Caesar sported.
"Yes." The mutated man replied, releasing his package and wrapping his tentacles around himself, "These help me spread the Good, and this" A tentacle drifted downwards and cradled his massive shaft, "Makes it really fun to spear the mutants and deposit the good stuff." He wrapped a tentacle around his sac, shifting it so that all six of the testacles that resided inside "The Good feeds well enough on GoodWater, but it goes absolutely crazy when it touches semen. Eats the stuff right up."
Fritz, for his part, didn't seem to off put by his companions rather vulgar display. "Interesting… Semen excites growth. I wonder what other materials could cause that…" Caesar whistled to get his attention before showing him to his own room.
It was on the top floor as well, connected to Caesars own. The room was empty, save for being coated in Good, so Caesar willed a bed of Good to form near the end of the room. It was roughly king sized, half the size of Caesar's own.
"Rest up, Fritz. The mutants will get more active near sundown." Caesar turned to leave, before he was stopped by Fritz.
"Hawkeye…" He began, laying in his bed, "I… Thank you for giving me this chance." Caesar turned back to the researcher just as he put his head on a slightly upraised portion of his bed.
"Please, call me Caesar," The muted man replied, backing out of the room, "Also, that pillow? You just watched its birth." He ducked out of the room upon delivering the news, though he didn't hear any sounds of panic from his guest…
'It looks like Fritz is a bit more of a freak than he lets on.' he laughed inwardly, approaching FirstChange, 'Now, lets see about filling you til you're fit to burst, my little cum-sac.'
__________
"And they call themselves the… Nice…Wardens?"
"NiceLifes," Caesar corrected, watching Fritz analyze one of the mutants.
"And their entire job here is to just… Mate?"
"I wouldn't call it a job…" Caesar replied, "You know what they say. If you love what you do, you'll never work a day in your life. Heh."
"… Indeed." Fritz had the mutant lay on its back, allowing him a closer look at its body. The mutant, not entirely sure of his purpose, spread hir legs and wiggled hir hips in an attempt to entice the scientist. "Their eagerness is rather noticeable. Not ones for foreplay, are they?"
"Foreplay to these guys is the first round of fucking." Caesar laughed, "Without me, they go on for hours."
"Without you?" Fritz asked, pulling out a stethoscope and placing it on the mutants belly.
"Well… The mutants share most sensations with each other, and when I'm involved…" Caesar gestured to his massive equipment.
"Note taken." Fritz replied.
'Does the Boomsticker not know what NiceTime is?' The mutant grumbled, wiggling hir hips a little more.
'He's figuring it out.' Caesar answered, smiling. Fritz spared a glance Caesars way before asking,
"Something shi said?"
"Shi thinks you don't know what sex is." The mutant man replied, "Shi's been sending you pretty blatant invites."
"Ah, is that what that was? I simply assumed my hands were cold." Fritz replied drily, "I've always been told my bedside manner is somewhat frigid."
"We'd best let hir get back to hir NicePile." Caesar suggested, placing a hand on Fritz' shoulder, "I designed these things to be ravenous little fuckers, so shi's probably reaching hir limit."
"One more reading," Fritz answered, pulling out a small light and bringing it to the mutants face. He leaned in as he beamed the light into hir eyes, just close enough for the mutant to wrap her arms around him and drag him into a kiss. Fritz panicked and pulled back, but the mutant , despite being physically smaller, was much stronger than him, and continued the kiss for a few moments before removing his head and shoving one of hir breasts into his mouth. Fritz glanced pleadingly up at Caesar, who replied by mouthing 'Give it a try' and imitating a sucking motion with his mouth. Fritz sighed around the mutants tit before realizing that it was the only way he'd get out of the situation. Squeezing his eyes shut, he sucked at it, resulting in a flood of slimy, viscous fluid to flood into his mouth. He nearly gagged at the combination of texture and temperature before he tasted it.
The liquid was… Sweet. The scientist gulped it down before taking another swig, followed by another and another. He pulled himself off the mutants chest and looked up at Caesar, readjusting his glasses as he did so. "Interesting… If I were to hazard a guess, I'd say that the GoodWater contains a supply of glucose, which gives it the flavor. It would explain why the mutants are able to survive off the stuff… But where would it come from?…" Fritz abruptly stood and rushed past Caesar, muttering something about needing the equipment in his bag. Caesar looked back at the NiceLife.
'This one swears that the Boomsticker will make Nice.' She growled, taking Fritz' obliviousness and seeming celibacy as a challenge. 'No NiceTime for This one until the one called FurItch has made Nice." A determined look came over the small mutant, who immediately leapt up and chased after Fritz. Caesar watched with a large grin and a hearty laugh, deciding to call hir CherryPopper.
__________
A month or so after his first taste of GoodWater, Fritz was up in his room with Caesar and CherryPopper, who now stayed at the scientists side almost constantly. Caesar sat in the corner of the room connected to the Good, running maintenance on a few of the nearby buildings, while Fritz sat with a vial of chemicals mixed with a sample of the Good. They'd been like this for some time, so Caesar was thoroughly surprised when Fritz exclaimed "I'VE GOT IT!" and thrust the vial into the air. Caesar disconnected from the Good and looked at the man, waiting for the explanation that he knew was coming.
"The Good works like a plant!" Fritz exclaimed, leaping to his feet and pacing around the room. CherryPopper opened hir eyes at the sound of movement, watching as the object of her obsession strutted excitedly around the room, "It takes in water, sunlight, and carbon-dioxide and makes fast amounts of glucose, along with a few other vital nutrients, which it then uses to both sustain itself and release for the mutants! The mutants do the same, just to a lesser extent! Even you, Caesar!"
Caesars eyes widened, "I'm impressed, Fritz." He said, "I hadn't thought about it that way."
"This is amazing! Oh, this is brilliant, I can't wait to see what else it produces!" Through all this, the faint sound of the scientists' stomach rumbling could be heard. CherryPopper leapt straight from hir position on Fritz' bead and tackled him to the ground, offering himself to him. "W-well, I suppose I could use a snack. This one is so eager to keep me fed, it's truly nice of hir!" Caesar laughed as Fritz began nursing from the mutant, still clueless as to hir desires. Maybe one day he'd tell the man, but until then… It was just too damn hilarious.
__________
"Interesting… And you said that you think it was your nanotrites that did this to you?"
Caesar gave a shrug, eyes focused on the pile of scrap parts the mutants had managed to bring in. "I mean.. I think so? That's the only explanation I can come up with, and I don't know how to explain some of the programs that they can run now." He pulled out a mostly unbroken RC turret, setting it aside with the other salvageable tech.
"That's an interesting hypothesis." Fritz responded, sitting next to the larger man and eyeing the pile of scrap, "Nanotrites were invented relatively shortly before the asteroid hit earth, very few records of them or their functions exist."
"Yeah, I figured." Caesar laughed, "It doesn't really bother me, though. I'm pretty content with my life here."
"So I've noticed! All the camaraderie you could wish for, with a heaping helping of… Scrap metal to keep you busy." Fritz gestured to the pile of metal and grease sitting in the middle of Caesars room
"I was trained as a military engineer back before the Ark." Caesar explained, "This stuff may look useless, but in the right hands it's better than any merc in the Wasteland."
"Even yourself?" Fritz prodded, laughing.
"Well, maybe not me." The mutant replied, grinning, "But it's a close second."
"I've never been one for robots, myself." Fritz said, "I've always been better with plants (what little of them there are) and animals. The mutants especially."
"Why is that, anyways?" Caesar asked, looking up from his scrap, "They seem like the last thing anyone is eager to learn about."
"Well, in short… Look around you!" Fritz enthused, throwing his hands in the air, "This entire place is amazing! The Mutants are the least studied species in the Wasteland, and I had a theory that they were more complicated than we seemed to think." Fritz laughed here, "I was right, of course."
"Yeah go you." Caesar replied, completely monotone.
'Where is FurItch?' Came the voice of CherryPopper, or Cheri, as Fritz referred to hir. Caesar sent hir a mental image of their location, not wanting to separate the amorous mutant from hir quarry.
"You look like one of the mutants is saying something." Fritz pointed out, his six months of living in the GoodTree leaving him with an almost sixth-sense when it came to nearby telepathy.
"Cheri is looking for you." Caesar replied, "I told hir we're in my room."
"Ah, Cheri." The scientist nodded, "Has… Has shi mentioned anything to you lately?"
"What about?"
"I don't know, shi's been acting strange…" Fritz sat in silence for a moment, "Do mutants go into heat?" Caesar fought hard to keep the smile from his face.
"N-no." He replied.
"Are you sure?" Fritz asked, "Shi's been pretty… Touchy lately." As if to illustrate his point, CherryPopper came barreling into the room, leaping almost halfway across the floor to tackle Fritz onto his back. The mutant was chest to chest with him, rubbing hir rather well endowed form along his body. Hir eight inch cock was smushed between hir stomach and his (he'd stopped wearing clothes unless he needed to, what with the publicly accepted nudity). Hir cock leaked a stream of GoodWater onto his stomach, tits smearing their own across his chest. Hir large, brown eyes were glued to his mouth, as though fixated on it.
"I see." Caesar chuckled, "Yeah, shi does seem pretty touchy… I'm not sure what's causing this." Caesar lied, "Probably best to just… Let hir do what shi wants. Shi hasn't hurt you, has shi?"
"N.. No." Fritz answered.
"Well then, no harm in it." CherryPopper slid up Fritz' body, popping one of hir leaking breasts into his mouth. Fritz sighed and gave a suck, resulting in a rush of GoodWater to spew from hir cock and pussy. Cheri gave a loud, keening moan as shi was drained. Having gone almost half a year without any type of sexual contact had left hir rather pent up, and shi seemed to be on a bit of a hair trigger lately.
'FurItch is very dumb.' Came FirstChanged voice as shi entered the room. Hir abdomen was truly massive, the bottom brushing the ground with every step. Shi made hir way over to Caesars bed, where shi flopped onto hir back and spread hir legs. A flood of Good gushed out of hir gaping pussy, connecting with the GoodTree and absorbing into it. It looked like she'd be there a while. 'And CherryPopper is dumber. If CherryPopper wants NiceTime with FurItch, CherryPopper should take it!'
'This one has tried!' Cheri responded, thoughts garbled through the static of pleasure, 'This one rubbed FurItch NiceSnake with its NiceHole! NiceSnake didn't wake up! Can't put NiceSnake in NiceHole if it's sleeping!' Fritz detached from Cheri's tit, letting out a small burp.
"I'm afraid that's all I can drink for now, darling." He said, pushing himself up. Now that he was back upright, Cheri was sitting in his lap, cock pointed upwards and pussy directly over his completely soft cock. "Thank you for the snack, though. I honestly feel like I've been eating healthier since I've come here than when I was in GoodSprings!"
__________
Nearly a month later, Fritz was sitting in his room. Cheri was with him, of course, though shi was asleep. Fritz was using the time to go over some of his notes on mutants, reviewing a few of the things he'd noticed in the past few weeks. Singer was certainly doing quite a bit for his new family, the scientist noted. He'd not only helped them spread their territory and become more prosperous than they'd ever been, he'd also gone about fixing up their bodies. Fritz had noticed a few days ago that the mutants' eyes, which were normally covered with a thick membrane that inhibited most sight, had been fixed. Or, as Caesar had said, cleared. The mutants all had nearly perfect vision now, and that wasn't all. He'd made them a little more resistant to heat and dryness, allowing them to venture out during morning or evening. They still preferred to hide away once the sun got higher in the sky, though, as he wasn't able to completely fix that little weakness.
Over all, Fritz was impressed with the former merc, maybe even a little jealous. He got to be the strong, good looking man, the hero of an entire species. He had brains, skill, and looks. Oh god, was he a looker. The square, rugged jaw. The piercing eyes. And dear god, his body! His body looked like a greek god! Absolutely bulging with muscle everywhere, muscle that was almost always coated in a layer of GoodWater from all the mutants he fucked. Fritz had taken the time to count one day. Twenty three. Twenty three separate mutants. Twenty three mutants that got to be speared on his giant, throbbing cock PER DAY. Just the thought of having that thing rub him, much less enter him, got Fritz rather hard downstairs. The scientist glanced down at his cock, idly considering jacking himself off, as he did rather frequently for the past few months. His hand wrapped around his member before he remembered that Cheri was still laying right next to him in his bed. The mutant was a rather hard sleeper, he'd noticed, so he decided not to bother going somewhere else.

Fritz' hand wandered downward, wrapping around his seven inch member. It throbbed needfully in his hand, a bead of pre collecting at the tip. Fritz' other hand slid down his back, three fingers sliding inside his puffy ass. Something he'd noticed about living in such a slimy environment was that he never really needed lube for his anal fixation, no matter how many fingers he inserted. Another slipped inside him, leaving only his thumb exposed to the open air. The horny scientist toyed with his prostate, reveling in the sensation of filling his ass so thoroughly. Before he'd come to the GoodTree, he'd only ever been able to fit three inside himself, maximum. But, with the abundant supply of lube and the constant presence of such a sexy piece of well endowed eye candy like Caesar, he'd had plenty of time to practice. His thumb tucked against his palm, forming a wedged shape that allowed him to slip his entire hand inside his stretched rectum. His anus clamped down on his wrist, though he wasn't content with simply sitting there. He pulled his hand nearly halfway out, having balled it into a fist inside himself, and thrust back in, his knuckles sliding across his rectum. Fritz twisted his hand so that his prostate was assaulted his prostate. His cock jumped in front of him, pre seeping out and dripping to the bed of Good below him. Fritz' other hand pumped his throbbing manhood steadily, timed with the other hands thrusts into his puffy derrière. He could feel his orgasm approaching fast, giving him just enough time to bend further backwards and shove his fist further into his ass. Despite the sudden lack of stimulation, the scientists cock erupted onto the Good before him in what would've been a decent sized load for a regular human, though compared to all the mutants he'd been around, it seemed rather miniscule.
Satisfied with his climax, Fritz flopped onto his side and yawned, slipping rather quickly into a pleasant, restful sleep. Cheri stirred lightly beside him, but showed no signs of waking. Once satisfied that both were asleep, Caesar materialized out of the Good in a nearby wall.
'Neither of them are going to get any if I don't intervene.'
'Singer should help CherryPopper.' Came FirstChanges mental voice from the next room, pinned once more beneath hir positively fecund, gigantic stomach. 'If CherryPopper not make Nice with FurItch soon, whole Family will make Nice for long time.' Shi had a point. Cheri's lust was transferring over to the rest of the Family in the Tree. If he didn't do something soon, they'd lose all productivity to a writhing mass of fucking. As nice as that sounded, Caesar preferred his hyper-orgies to be planned around his schedule, not the other way around.
'Maybe just a little push…' Caesar faded back into the Good, though not before commanding a segment of the Good to make its way into Fritz' softening member, connected by a small stream of cum that it was still drooling. He made it small, so the scientist wouldn't be able to feel it until it took hold. He didn't want to ruin the surprise.
__________
It'd been a week since Caesar had given Fritz his little… Infusion. He'd rather enjoyed the results. Seeing as he still possessed control over the Good inside the scientists body, he'd begun mutating him in much the same way he'd been mutated. There were a few differences, of course. Fritz' brain didn't have the advanced nanotrites that Caesar had been infused with, and such technology had been lost long before the Armageddon. He was able to begin working the more rudimentary models into Fritz' brain and hook them into his various neuro receptors. Of course, without the proper training or, in the mutants case, instinct, Fritz wouldn't realize anything was different. He did, of course, notice a slight increase in reaction time, physical strength and endurance, and that his eyesight had begun to improve, but attributed it to the improved diet provided by the GoodWater.
'I wonder where Caesar went… I still need to run a few tests by him… and maybe stare a bit.' Came the newest addition to the choir of voices in his head. Fritz/ thoughts were now being broadcast on a rather selective channel, allowing him to listen in on them. He'd been working out how to calibrate them to allow others to listen in and, eventually, allow Fritz to listen to others. As it was, since the scientist didn't know how to shield his thoughts, Caesar had a direct link to all of them. They were rather flattering.
Caesar rolled FirstChanges body off of him, hir currently slim form fresh from birthing another heaving mass of Good. He figured he might as well find Fritz and see what he needed. Besides, physical contact was the only way he could have any fine tuned control over the Nanotrites, which was why he hadn't gotten very far. That probably didn't help Fritz' condition, either. All that extra contact with the object of his desires led to… dirty thoughts. Lots of them. His body flowed into the fleshy mass of the Good beneath him, consciousness and body dispersing through the substance and reforming a few hundred feet away, near the middle of the GoodTree. Once he was finished forming, he opened his eyes and scanned the room. Nearby was a pile of writhing, fucking mutants. And, just a few feet from that, sat a scientist hastily scribbling notes on a swiftly dwindling supply of papers.
Caesar eyed the slightly mutated scientist, noting that he'd stopped wearing his glasses. The smaller mans eyes focused intently on the notepad in front of him, occasionally darting up to the pile of mutants. Not a single bit of squinting or leaning in. Caesar tilted his head, coming to a decision. He'd finish the transformation today. That'd require quite a bit of physical contact, though...
"I'm sure that by now you've taken enough notes on this particular subject, Fritz." Caesar laughed, calmly walking up to his friend.
'Wh-crap! It's him, how does he always show up?!'
"Oh, Hey there, Caesar." Fritz quickly flipped his notes closed, "I was just… There's- uh. Always more to be learned!"
"Really? Like what?" Caesar sat down next to Fritz, scooting close enough for their shoulders to touch. -Nanotrite link successful-
'He's touching me again oh god. Crap! Not now! Go down!' Fritz shifted his notepad over his groin, a movement subtle enough that Caesar wouldn't have been able to sense it had he not been reading his mind.
"Nothing you'd be interested in! I'm sure you already know all about it!"
"Well, why not let me take a look then? I could make sure it's all correct." As he spoke, his tentacles whipped into action, wrapping around the smaller mans wrists, waist, and ankles, while Caesar reached over and picked up the notes.
'F-fuck!'
"Hey, give those back! Let me go!" Fritz pulled against his restraints, desperately trying to reclaim his notes. The tentacle wrapped around his waist felt a significant hardening, and Caesar made sure to apply just a tiny bit more pressure to said hardness. "H-hey! Let go!"
"A lot of this looks like… Drawings." Caesar flipped the page over to a drawing that appeared to be of him and FirstChange. It depicted him atop FirstChange, his tentacles holding hir wrists and ankles up while he rutted hir into the ground. One of his favorite positions. "Not bad, either." Fritz ceased his struggling, hanging his head down and avoiding Caesars gaze. "Aw, c'mon guy! Here, let me make it up to you." Caesar lifted Fritz up with his tentacles, placing the small scientist into his muscular arms. "I guarantee, this will feel much better than your hands." His tentacles curled around, one tying Fritz' ankles while the second tied his hands. The third lined up so that the tip was touching the tip of Fritz' now bare, pulsing cock.
Caesar could feel the waves of embarrassment and shame rolling off Fritz, but they were easily outweighed by the excitement and lust that clouded his thoughts. The Alpha Mutant grabbed the back of Fritz' head and brought it to his, their lips meeting in a forceful kiss. Caesar's six inch tongue invaded Fritz mouth, forcing the smaller male to let out a squeak of surprise. Just as Fritz' tongue began to play with Caesars, the mutant enveloped his partners cock in the slit of his tentacle. Without any real restraint, the appendage began quickly pumping the smaller rod enclosed inside, stimulating it to the point that Fritz actually let out a moan.
"C-Caesar…" he began, breaking the kiss.
"Please, I insist, I was out of line. And hey, when I said it would feel better than your hand?" Caesar slipped his fourth tentacle underneath them, shrinking it down to roughly an inch thick and allowing the slimy appendage to prod at Fritz' well practiced anus.
"H-hey! I'm not sure if I ca-" Caesar interrupted his protest by sealing his lips back over Fritz', tongue sliding back into his mouth and easily dominating the smaller tongue of the scientist. His fourth tentacle let out a jet of semen mixed with GoodWater for lubricant, taking a few experimental thrusts to loosen up the small orifice. Then, not half a minute since he started, Caesar crammed nearly half a foot of tentacle up the smaller mans ass. Fritz moaned through his nose at the sensation. The tentacle was a bit bigger than his fingers, for sure. As Caesar slithered more and more of the tentacle into Fritz' bowels, a small lump could be seen moving about in his stomach. Soon it was in as far as it could go, nearly five feet, and then he began pistoning in and out of the human at the same speed the tentacle around his cock was going.
Caesar broke from the kiss, grinning. "So? Am I forgiven?"
"Hnn~" Was the reply, Fritz ' brain frankly too overwhelmed to come up with a proper response. Caesar could feel Fritz tighten around his tentacle, and soon a few meager (by comparison) spurts flowed from the researchers cock and into Caesars tentacle. The bindings on Fritz' ankles and wrists slackened, allowing him to wrap his arms around Caesars neck and pull him back into a kiss.
'F…Fuck.' Came Fritz inner voice, bubbly and muffled from the orgasm. Caesar pulled his tentacle out of the researchers ass, leaving behind a mixed trail of Good, cum, and GoodWater. A wave of emptiness and disappointment rolled of Fritz, but he made no attempt to stop it. There was a bit of shock once he realized that there was still something inside him, though.
"Wh-what'd you… do?"
"Just a bit of an injection." Caesar replied, willing the rapidly growing stash of Good inside the soon-to-be-former human to be absorbed into the surrounding tissue. And, just like that, Fritz could hear the mutants.
"What's going oooOOOOONNNN!" The researcher was hit by the waves of ecstasy rolling off the nearby orgy, his own cock spurting a few more spurts onto his chest.
"I've mutated you. Welcome to the Family." Caesar replied. Tendrils of Good shot up from the floor, melding into Fritz' back and changing him. Lean muscles developed beneath his skin, filling out his skinny frame. Popping sounds could be heard as his hips began widening, soon becoming further across than his shoulders. His ass filled out as well, swelling in Caesars palms until it was proportionate to his hips. And, lastly, his libido was supercharged, now on par with, maybe even greater than, the combined sexual appetite of four of the NiceLifes. The tentacles disconnected, returning to the floor and leaving a now much more sexualized Fritz panting in Caesars arms.
"I… I need to fuck something!" He stressed, his cock now leaking a mix of cum and GoodWater. Caesar implanted the idea of Cheri, and Fritz was off like a shot. He needed no guidance, already knowing that Cheri was in his room, like always. Caesar followed out of a mix of curiosity and excitement.
Cheri lay asleep on Fritz bed, face up with hir arms splayed out. Fritz was on her in a second, grinding his aching cock on hirs. Cheri woke with a start and was met with a savage, greedy kiss from Fritz.
'FurItch want NiceTime?' shi asked hopefully, cock twitching in anticipation.
'Yes.' Fritz replied, much to his partners surprise. A question began forming in Cheri's mind, but shi was cut off when he lifted himself up and fully impaled himself on hir eight inch member, his own cock shooting out a small spurt of his cum. Cheri, meanwhile, immediately let forth the deluge of Good that had built up inside hir balls during hir seven month abstinence. Fritz' stomach bulged outwards from the pressure, but soon shrank back down. A second cock sprouted just above his first, both growing to a full ten inches using the Good Cheri had just provided. He pulled himself off the satisfied mutant beneath him and flipped hir over, lifting hir hips and lining his top and bottom cock up with hir ass and pussy, respectively. With a thrust, he hilted himself entirely inside the smaller mutant, bottom cockhead bursting through the entrance to hir womb. Now it was Cheri's turn to have hir stomach bulge, though shi didn't seem to mind. In fact, another flood of Good rushed from hir clenching balls and onto the bed beneath them, though not as large as hir first orgasm. Fritz let out a groan of satisfaction and leaned himself over so that he was on all fours above Cheri. His hips jumped straight to full speed, jackhammering into the mutant beneath him at full force. The loud slapping of GoodWater soaked flesh on flesh echoed through the room, greeting Caesar as he entered.
"Wow," Caesar muttered, impressed, "Maybe I put in a little too much libido…"
"Please!" Fritz moaned, both telepathically and verbally, as he reached a single hand back. He slid four fingers in his ass all in one go, spreading his slimy, slutty hole open for his new Alpha. "I want it! I need to feel full! Fuck my ass! Fill me with a big, slimy mess of Good, just like you do to FirstChange!" Caesar raised his eyebrow, approaching the lustful former-scientist. "Please! Stretch me out! Wear me!" The Alpha-Mutant lined his cock up with Fritz' gaping ass, the tip alone dwarfing the hole before it. Caesar held the smaller man in place when he tried to push back, endeavoring to enjoy wearing him out. He could feel Fritz' ass clench as the newest mutant came, squirting a fresh batch of Goodwater and jizz into Cheri. Cheri's cock, meanwhile, coated the bed of Good beneath it in a stream of pent up GoodWater, which was immediately absorbed.
Caesar leaned forward, thrusting the tip of his cock into Fritz in a single motion, a fleshy pop sound accompanying the motion. The scientist let out a gratified moan beneath him, cock once more squirting its load into Cheri.
'Big, Big, BIG!' came Fritz' ecstatic mental voice, 'So BIG! Keeep pushing! Don't stop!' Caesar, not one for keeping his betas waiting, took a firm grip of the smaller mans waist and rammed forward, the entirety of his thigh sized erection forcing its way inside Fritz. A wave of pure ecstasy flew from the newly minted mutants mind, flooding the entirety of the higher floors with pleasure. Had he not shielded himself from it, Caesar had no doubt that he would've blown his load right then. Seeing as how he wanted to spend a while breaking his new sleeve in, though, he couldn't afford to get spent so quickly. He could feel Fritz' ass clenching below him, milking the gargantuan shaft for all it was worth. Cheri squealed beneath them, torrents erupting from both sets of hir anatomy even as shi lost consciousness. Fritz, though, managed to stay awake to feel himself be pulled off his mate, the strong hands of Caesar easily lifting him up.
As it was Caesar now sat upright on the bed, with Fritz taking the place on his lap and around his cock. Caesar looked down over his betas shoulder, easily able to see the outline of his cock pushing out from the scientists chest. He also noted that Fritz' hips had widened, hinged to allow even the largest entries. Slutty. He liked it. Fritz, meanwhile, began moaning incoherently, his mind completely lost to pleasure. Various pleading obscenities spilled from his mouth in no particular order, but were soon silenced when one of Caesars tentacle inserted itself and slithered down his throat. It didn't get very far before touching the tip of Caesar's shaft, confirming his suspicions. Fritz seemed to have warped his own body so that it was one straight tunnel through. With the nanotrites providing all the nutrients and waste removal that he could need, such an outlandish internal structure wasn't entirely impossible, Caesar reflected. Still, though, to want his cock inside him so much as to subconsciously warp his own body… That was impressive. Nonetheless, Caesar still needed to claim the new mutant as his. Another tentacle wrapped around and poised itself at Fritz' mouth, slipping in next to its sibling with surprising ease. Fritz neck bulged outwards even more, now almost as thick as his torso, with the extra intrusion. Faint moans made their way out of his stretched throat, but were drowned out by the pleasured screams echoing from his mind.
With no warning, Caesar tightened his grip on Fritz and began sliding the human onahole up and down along his giant shaft, finding a certain strange delight in watching the rapid inflating and deflating of the smaller mans chest. Loud, lewd, wet slaps echoed around them, the sound of their frenzied fucking carrying throughout the upper two floors of the GoodTree. Caesars tentacles mirrored his movements, pulling out as Fritz was lifted off the cock and filling him up once more when he slid down. Feeling a little adventurous himself, Caesar slid his other two tentacles between his muscled asscheeks, poising both blunt heads at the entrance to his bowels. A large stream of GoodWater shot forth, lubricating him as well as he could, before the tentacles both rammed forward in unison. Seeing as he was larger than Fritz, the tentacles weren't stretching him out as wide as they were the physically small scientist, but each tentacle was still four inches thick. Caesars mutated flesh stretched to accommodate the outlandishly large intrusion, bringing a feeling of pleasurable fullness. Of course, ever the impatient one, Caesar slid his tentacles as far up his colon as they would go, and could soon easily see them moving about beneath the skin of his chiseled stomach. He began furiously pumping those as well, filling and emptying himself almost as quickly as he was Fritz.
Their session continued on for what felt like days to them, but was actually just under an hour. Fritz' orgasms began to occur less frequently and were getting much smaller. After the first half hour, the new mutant was really just firing blanks. His eyes rolled back in his head, though he retained consciousness. The almost painful pleasure had become his world, a blinding euphoria that had long ago drowned out his other senses. Caesar, even through his mental barriers, could feel the burning sun of pleasure and euphoria that was Fritz' mind. His normally perfect control over his orgasms began to waver, until he eventually lost it. He could feel his sextette of melon sized balls churn and tense, the veritable river of splooge and Good spilling through his tentacles and cock. His stomach swelled out a bid from the two in his ass, but that was nothing compared to Fritz.
The smaller mans stomach inflated with an alarming speed, going from taught to exercise ball sized in only a few seconds. The combined deluge from his tentacles and cock had flooded the young mutant almost instantly, and soon the pressure caused the musky mix to spurt from his mouth and nose. Caesar attempted to reign in his output, but in the haze of his orgasm his mental barrier had wavered. The blinding, almost celestial pleasure from Fritz' mind spilled into his, and through him to all the mutants inside the GoodTree. He could feel the web of pleasure growing, every mutant in the tree simultaneously and spontaneously cumming. He could feel his own orgasm, just beginning to die down at the time, kick into overdrive. His muscles tensed and relaxed simultaneously, his tentacles writhing violently inside both of their bodies. Caesars stomach swelled to the size of a beach ball and showed no signs of stopping, while Fritz' stomach grew to nearly twice its previous size. Then, nothing.
Caesar's mind was overloaded by the pleasure, and just before he lost consciousness, he sensed two things. The first was the sound of Fritz' mind begging in a slight whisper.
'More.'
And the second was is own mind.
'Yes.'

Well, there you go! One chapter, piping hot and still squirming! I wanted to do this chapter as a sort of episodic series of short stories that outlined Fritz' first few months in the Tree. I think I did a decent job.
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Mutant Rage