Chapter 30
by
GalactoseTolerant
What's next?
Alkim Makes Some Adjustments
Alkim
Even before Alkim became aware of his abilities, it was clear to him that Mikaella was enjoying these blowjobs, his cum, and his precum, far more than was normal for any woman.
He hadn’t the faintest clue why until he took note of some of the compounds his Cowper's gland was infusing his precum with. None were particularly exotic, just naturally occurring neurotransmitters, at very potent doses. Altogether, they would drastically increase the pleasure she felt, and the levels spiked every time she received a blast of precum.
Just then, as if to prove his point, he felt the rush of fluid up his urethra, and a moment later he felt her tongue curling around his cockhead, followed by renewed and powerful suction on his cock.
He groaned and let her please him.
The explanation for this phenomenon was clear enough to him. Alkim liked getting his dick sucked, so his body made sure Mikaella enjoyed it just as much as he did, and continuously at that. If it were just his orgasm that brought her pleasure, that would have trained Mikaella to just rush for the finish line to get her reward. Instead, the constant drip-feeding of precum encouraged her to edge him for as long as possible, which was always how he preferred to masturbate whenever time allowed.
Now, he had proof that her oral fixation was not merely some kink, nor a pathological need to be a people-pleaser: she was receiving a steady stream of mind-altering chemicals through his precum.
In fact, they’d probably been training each other. Over the last few days, marathon bouts of oral sex must have become very routine for the both of them, as evidenced by their mutual performances this morning. Both were now capable of completing this exchange of fluids without any need for conscious control over their bodies.
Pavlov’s friend with benefits? Damn, that’s so… fucking hot!
And that wasn’t all his body was dosing her with. There was spilanthol to stimulate her salivary glands, endorphins to give her energy and to keep her jaws from aching. There were also hormones present, but not the same mixture he’d given to Kate, and their names and functions were beyond him just then.
Alkim let himself get distracted by the sight of Mikaella’s cheeks hollowing in and out as her head bobbed halfway down, paired with that twisting squeezing from her hands pumping the remainder of his shaft. It felt even better than it looked, and it looked absolutely perfect.
It took another minute before he regained focus. What he needed was the full picture, and to get that, he needed to sample Mikaella’s internal chemistry.
Unfortunately for Alkim, his little blowjob-princess wasn’t producing delicious breastmilk that he could analyze by simply tasting it and checking for any unexpected chemicals. This would require more imagination and experimentation than he’d expected.
He thought about various monitoring techniques he’d used at the hospital: EKG machines, thermometers, pulse oximeters, and various blood testing devices. Blood testing would be the most informative, but he didn’t want to make her bleed.
There must be some way to check her indirectly or diffusely: some method my body must already be employing to ensure Kate and Mikaella aren’t given more than they can handle…
Then it occurred to Alkim: he already had one highly sensitive, blood-filled organ in close contact with Mikaella’s system. The skin in her mouth and throat was not completely open, but it was semi-permeable.
Will that be enough?
There was only one way to find out.
“Alright, slut. Time to prove yourself.”
Alkim took a handful of Mikaella’s new highlights, wrapped them around his right hand like boxing tape, and pressed her head down.
Mikaella stayed in character too. She whined with her mouth around the top third of his shaft, and looked up at him with pouty eyes, but submissively allowed him to plug her mouth completely. He loved the vibrations she sent up his shaft, that sulky face stretched around his dick, the constant flicking of the expert tongue around his crown.
It really was working for him.
But this wasn’t just about his pleasure, or the video they were shooting. Kinky as it was, this was a crucial experiment, and even something of a health check.
He shifted and intensified his chemical awareness onto his receptive cockhead, now lodged in Mikaella’s throat. He could sense the countless little capillaries just beneath the surface, and their proximity to her cells just beyond the reach of his power. He was almost there, but he needed more. Not just more stimulation, but more contact.
Every thirty seconds or so he pulled Mikaella up to his tip and slowly pushed her back down his shaft. At first, he did so gently, but after the third time when she didn’t tap out or mumble her safe-word, he started shoving her head down deeper. Eventually, he progressed to the point where her lips were sealed just above his balls, and his cockhead was lodged in her throat.
After holding still like this for some time, it almost felt to Alkim as if the thin layers of skin that separated them were fading away, dissolving to nothingness.
Then, his awareness exploded outwards, like he’d been wearing his binoculars backwards, and had only just flipped them around. He was an explorer navigating an undiscovered river, mapping the current of chemicals circulating throughout Mikaella’s body.
He was able to sense the various electrolytes in her plasma, blood sugars, and everything else the human body needed to sustain itself. Every beat of her heart brought him a new stream of information, just over one per second, constantly refreshing and expanding his connection to her body.
Ha! Elizabeth Holmes can suck my dick!
He pumped his free fist in triumph.
Were this a machine he’d designed, it could have won him a Nobel prize in medicine. Of course, he couldn’t exactly replicate and publish his discoveries, but he refused to let that spoil this achievement.
In a way, this was the most intimate connection he’d ever shared with another human being. Yet, he still needed more information, and his newfound chemoreception technique seemed to work best when the contact between them was maximized.
Staying in character, Alkim said what he thought a scumbag douchebro would say in this situation.
“Pretty good job deepthroating, suckslut. But I wanna know how long you can hold your breath.” He shoved her head down, keeping his hand on her new highlights, and watched her eyes, ensuring he was ready to pull her free at the first signs of struggle. “Take. It. all.” he grunted between each word. When her lips had again taken him to the root, he called her a “good fuckdoll,” and went back to concentrating on the link between their systems.
It wasn’t long before he noticed something truly odd.
After a minute like this, Mikaella’s blood oxygen levels were still remarkably high. They only began to drop after ninety seconds, and slowly at that. When the second minute rolled around her oxygen saturation levels still hadn’t dropped below ninety-five percent, while her eyes were still lively and perfectly focused on the camera, at least whenever she wasn’t focused on Alkim himself.
Mikaella seemed eager to prove she was a good suckslut, and it became clear to him that she wasn’t going to back out, nor would she take a single breath without his permission.
How is she doing this? I’ve never seen her go swimming, jogging, or do any cardio of any kind…
Alkim concentrated once again on her bloodstream, but took a wider view this time, and noted with some confusion that the fluid itself was thicker than his own.
Only then did Alkim finally identify the main hormone his body was supplying her with.
Erythropoietin?
A hormone that increases red-blood-cell counts, and the cell’s corresponding levels of hemoglobin, a molecule which carries oxygen.
Holy shit! No wonder she can hold her breath for so long! All the cum and precum she’s drunk must have added up to one intense blood-doping treatment. Mikaella could probably give Lance Armstrong a run for his money. Fuck, she might be able to rawdog Mount Everest, without bottled oxygen!
Now it was all falling into place. Though he’d wanted to see Mikaella with more curves, whenever she was sucking him off, all his priorities must have become very blowjob-centric. That also explained what all the extra calories in her diet had gone into. While Kate’s body had immediately prioritized breast growth, Mikaella’s body had instead been conditioning itself to win a gold medal in fellatio.
Wonder if her myoglobin levels are equally high. She'd probably kill it as a free diver. Maybe I should take her out to Catalina sometime…
Then he checked his phone, and was shocked to find it had been more than three minutes since her last breath. Any other woman might have passed out sixty seconds ago, yet Mikaella’s tongue and lips remained active the entire time, and she was looking up at him with unshaken determination to please him.
Hot as that was for him to realize, they were still recording, and this deepthroating session had progressed from a sexual spectacle into the realm of medical intrigue. Alkim was not quite ready to draw that kind of attention to himself nor his cumslut just yet.
He pulled her up by her long hair. Mikaella gasped lightly, still connected to Alkim with strands of drool, yet she still didn't look nearly as rough as one might expect after nearly three minutes of continuous deepthroating.
“Holy shit-” he caught himself nearly using her name “-girl?! You a professional dicksucker or something?”
“Yes, sir.” She nodded obediently and gave him one long lick from his balls up his shaft and to the head of his cock. Alkim’s hand was still wrapped up in her hair, but the motion was all from Mikaella.
She hardly looked taxed by the experience, and clearly wanted to start round two.
“Fucking hell. Keep that up, fuckdoll, and maybe I won’t make you pay me back for this month.”
He aimed his facecam at the thick, purplish ring of lipstick, a mark of her complete mastery over all things oral sex.
If anything, his hand in her hair was only reining in her full potential.
Freestyle time.
He let go of her hair, allowing Mikaella to make him cum at her own pace.
Immediately, she descended back onto the cock, slurping and bobbing away like a woman possessed. It was like she loved his dick more than the air she breathed. In fact, that might literally be true now that he’s made her so much less dependent on continuous breathing.
What if I did the same thing to my blood and muscles? It’d make me a lot better at everything from swimming, to running, to eating pussy… Hell, I’ve been thinking too small this whole time. This morning I’d been impressed by growing tits, and making amphetamines, but I could change my own body in countless tiny ways if I only taught myself how: antibodies for any disease, poison resistance, rapid healing, cancer prevention…
The more Alkim thought about it, the more potential he saw, the more enamored he became with standing on the cutting edge of human biochemical enhancement. This was exactly what he’d wanted to do with his knowledge, his degree: real experimental science.
No one else could match what he’d achieved in mere days, operating on pure instinct, and without any need for needles, measurements, or a supplier of chemicals. Over a greater timescale, there was no limit to what he could learn about the human body, about his power of chemical control, and no limit to what he could change.
And to think, a year ago I would have settled for something as trivial as a medical degree. Ha!
But to do that, he would need a test subject: someone to practice on, to help him hone his techniques.
And who better than Mikaella?
She was the perfect candidate for such an experiment. Mikaella had already confessed to an entire list of body image issues, issues he could remedy with ease, and without any changes in their routine. Instead of accidentally giving Kate tiny doses of laced saliva, he could introduce huge quantities of chemicals directly into Mikaella’s mouth and stomach.
He could give her exactly the body they both wanted: busty, petite, one her cousins and former classmates would look at with envy. A body superior to anything her former sugar daddy could acquire with all the money and cosmetic surgeries at his disposal.
Still, while he hadn’t exactly given that pass/fail bioethics class his full attention, his professor was pretty clear on the importance of getting informed consent from test subjects, and Alkim was about seventy percent sure not disclosing the experiment to Mikaella would violate the Geneva Convention.
Yet, despite their intimate physical proximity, and their new business relationship as co-pornstars, Mikaella hadn’t been much more than an acquaintance until a few days ago. There was a lot he still didn’t know about her, including how she might react, or how well she did with secrets.
Even if she didn’t mean to out me, accidents happen. The wrong ears at the wrong time, and I could wind up as the unfortunate lab rat. But it’s also far too late to stop the experiment or break off our new relationship.
She’s addicted to me now. I did that to her, but I don’t have the faintest clue how to reverse that process. Not like I can send her to rehab for a blowjob addiction.
Then again, why would she want me to undo anything? Haven’t I already improved her life for the better?
Thanks to me, she cums like crazy from blowjobs, she doesn’t have to date disgusting old men, she can hold her breath like a champion diver, and she’s a lot happier now than when I first met her.
It's not like she won’t enjoy the treatment and the final results. She might just thank me for everything, then ask for seconds.
Fuck it.
If it doesn’t work then we keep things as-is. If it does work, I’ll tell her how I did it, and if she really wants, I can undo it.
Alkim figured that her blood was probably about as oxygen carrying as it could get without thickening to the point of danger. Short of rearranging her airways to make **** impossible, she was about as physically gifted of a cocksucker as she would ever need to be. He didn’t want to risk her forming any dangerous blood clots, so he halted further production of erythropoietin.
It was time to guide her transformation in a new and much more visually interesting direction.
He imagined that flat chest of hers filling out, growing, and growing, until those tits were big enough to completely smother his dick. Only the head would be able to escape her cleavage, and she’d bend over to suck on it while she bounced her huge tits over the rest of his cock, pausing only to combine his cum with her own breastmilk…
Oooohhh fuuuuck! Yes! The blowjob-titfuck-lactation combo: that should be my first objective.
Ever since he’d gotten hooked on big titty porn, Alkim had always wanted to try titfucking, but he’d never been with any woman that was chesty enough to pull it off. If he could grow Mikaella’s tits to that size, and get her producing milk like Kate, he would have proof positive in his ability to consciously change the physiology of another human being.
Not exactly his loftiest goal, but it was just a start.
He concentrated on his balls, temporarily halting all testosterone production, instead directing them to function temporarily as supercharged ovaries. Soon they were producing levels of feminizing hormones far above Mikaella’s natural baseline, especially estrogen, and prolactin.
Mikaella said she wanted to be bustier than Hannah. It would be rude not to give her what she wanted, ungentlemanly, even.
Bigger tits, wider hips, and a fatter ass to boot: that would be his gift to her, and to himself.
Oh man, we could track her progress on our OnlyFans, get the people invested in her growing figure! Note to self, get all her measurements right after this, before she starts her second puberty.
The mixture was almost perfected, yet Alkim felt there was something missing.
He couldn’t quite shake his earlier paranoia over how Mikaella might react to these changes, or if she discovered he was the cause of them.
Why had Kate not seemed the least bit upset with me over her recent transformation, even with all the assorted inconveniences those giant, lactating breasts had caused her?
He wanted to believe it was just because they were good friends, or because of the fact that his abilities had saved her life last night, but that couldn’t be all of it. Kate may have come to that conclusion eventually, but that usually came after the inevitable blowup.
He’d expected her to get mad at him, kick him out, and then apologize later and accept his help. But the predicted freakout never came.
Why not?
The answer came to him from an ethology lecture two years prior that dealt with reproductive behavior in animals.
Oxytocin: the love hormone. It’s known to help with trust, and social bonding between partners, but especially between nursing mothers and their children… holy shit.
The physical act of titsucking, combined with his pleasure-inducing chemical output, must have caused his chesty bestie to feel closer to him than ever before. Kate, who trusted him with a key to her house after just three days, may have just trusted him with the keys to her body.
Now, for his own safety, he had to bring Mikaella up to that same level, and fast. If she responded like Kate, she would view everything he did through rose-tinted glasses, and value physical intimacy with him far too much to ever go against him.
Combining oxytocin with serotonin and natural endorphins should amplify the euphoric effect on her emotional state.
A quick scan of his chemical output revealed there were already elevated levels of such compounds present in his cum. His subconscious must have already worked out pieces of the same problem. That was a good start.
Alkim increased the concentrations of each by an order of magnitude.
Leave nothing to chance.
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Chemical Control
Better Women Through Chemistry
After tripping absolute balls with his gorgeous roommate, Alkim finds his housemates growing increasingly affectionate and incredibly busty. He soon discovers that not only he is the cause of these changes, but his body can produce any chemicals he can imagine, and thus, induce any changes he desires. Torn between his ethics and his libido, will Alkim resist the temptation to transform every girl he knows into his ultra-busty, lactating, cum-addicted harem? Hell no.
Updated on May 26, 2026
by GalactoseTolerant
Created on Jul 15, 2025
by GalactoseTolerant
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