Chapter 2: Susan and the Discovery of tx34

After thrusting into Tania while she lay in the MRI scanner, the researcher in me couldn’t resist diving into the brain scans of our session. Especially after our first fuck during her fertile phase, analyzing the data gave me a distraction from the nagging fear that I might have knocked her up. When she returned for a second round, fortunately not pregnant, my curiosity only deepened.

The scans revealed something fascinating: the intricate choreography of her brain during orgasm. Our high-resolution machine, capable of capturing neural activity down to microsecond intervals, let me trace the exact sequence of activations. I could map the precise moment when the orgasmic wave surged through her neural circuits. It became a sort of thrilling experiment, following the trail of a woman’s climax, even if just on a screen.

What I wasn’t prepared for, though, was the discovery of a mysterious network of neurons, a delicate web of filaments running through most of her brain. This network had never been reported before, and it seemed to ignite just before the usual regions tied to arousal and orgasm. It looked like the command center for everything sexual, a neural hub orchestrating the intricate dance of desire and climax.

Most intriguingly, it extended its reach into regions of the brain responsible for reasoning, behavior, and values, areas typically associated with higher cognitive functions. This suggested it played a far more comprehensive role than merely managing arousal and orgasm. It seemed to regulate everything tied to reproduction, from the subtle cues of flirtation to the magnetic pull of attraction, weaving together the primal and the intellectual.

The network’s tendrils appeared to influence decision-making processes, blurring the lines between rational thought and raw instinct. It wasn’t just about sexual pleasure; it seemed to guide behaviors that heightened reproductive success, like selecting a mate or responding to social signals. The implications were profound, hinting at a biological system deeply embedded in human nature, subtly steering everything from chemistry-driven attraction to the most calculated seduction.

In Tania’s case, this horny web seemed to dominate, her heightened arousal almost a direct extension of this network’s powerful influence. It was as though her body and mind were synced to optimize her reproductive potential, leaving her behavior unguarded and driven by an irresistible pull toward sexual connection. This network wasn’t just regulating her orgasm: it was scripting her entire approach to desire, attraction, and surrender, transforming her into a willing slut, perfectly primed to indulge her rawest breeding instincts at the peak of her fertility.

I started calling it the “horny web,” inspired by the way it seemed to orchestrate Tania’s heightened desire. Once I knew what to look for, I found traces of this network in all the female scans we had, never in males, but it was subtle, nearly dormant in most women. Tania’s horny web, however, was a revelation. Its structure was much thicker, more developed, which is why it was so easy to spot in her scans. But even then, without her exaggerated activation just at her ovulation, I might never have discovered it.

Tania’s web didn’t just stand out anatomically; its activity levels were off the charts. Even before I touched her, the network pulsed with an intensity I hadn’t seen in any other subject. Could this be why she’d been so turned on from the moment we met? The ‘horny web’ making her willing, slutty, ready to fuck?

Her second visit allowed me to study her at different stages of her cycle, confirming something remarkable: during ovulation, her horny web was fully primed, practically humming with energy. Outside her fertile window, the network quieted, retreating into the background. Even then, it remained far stronger than in other female subjects, though its activity dropped to levels that were orders of magnitude less intense than during her ovulation.

Over the following weeks, I refined my analysis. The data became undeniable, Tania’s uninhibited willingness to fuck a stranger, her raw arousal, all tied back to the powerful activation of this enigmatic network. Her ovulation turned the horny web into a blazing signal, making her the perfect storm of lust and surrender.

This network was something so unexpected yet laden with tantalizing implications: a central control system over female reproduction, influencing everything from behavior and the choice of a sex partner to the level of arousal and the intensity of orgasm. All of it, seemingly orchestrated from a single, intricate command center. It sounded almost too good to be true, didn’t it? But there it was, the evidence staring back at me, undeniable and irrefutable. Could this really be how the female brain worked? Every decision about mating, how, where, when, and with whom, carefully managed by a network of neurons so delicate and elusive that it had escaped detection until now?

My second phase of research centered on identifying the specific types of neurons within this network. To my surprise, I discovered that it was composed of an obscure type of nerve cell that scientists had largely overlooked due to its extremely low abundance.

Male brains contained virtually none of these neurons, with a minor exception in a region associated with judgment, self-control, and restraint. In contrast, these cells were widespread throughout the female brain, forming microscopic filaments so fine they had previously escaped detection.

Delving into the scientific literature, I uncovered only one publication mentioning these exotic neurons, which I began referring to as “horny neurons.” The paper reported their gene expression profile, a unique signature that describes which of the approximately 21,000 known human genes were actively “used” in these cells. By “used,” I mean transcribed into RNA and then translated into proteins, the fundamental building blocks of life.

By comparing the horny neurons’ gene expression profile with other cell types, I worked to pinpoint genes uniquely active in these neurons. Eventually, I narrowed it down to a single gene that appeared to encode a cellular receptor. This receptor, which I dubbed the “horny receptor,” seemed to be an uncharted frontier in neuroscience. Virtually no research had been conducted on it.

Structurally, the horny receptor resembled receptors for other female hormones involved in the menstrual cycle. As someone deeply familiar with these hormones and their receptors, given that my Ph.D. research revolved around them, I immediately recognized its hallmark traits as those of an ovulation-specific receptor. I was hooked. This connection opened up an exciting new avenue for understanding the profound link between ovulation and sexual behavior.

My curiosity became an obsession. I started pulling night shifts at the lab, driven by the need to validate my hypothesis. As a trained biochemist, it wasn’t difficult for me to genetically express the “horny” receptor in a lab-grown human cell line. When I introduced a small sample of blood from an ovulating subject, the cells in my petri dish reacted immediately, showing a strong membrane depolarization, the kind of signal that triggers neuronal activation. Blood from other phases of the menstrual cycle produced no such response.

If the activation of this receptor had transformed Tania into the insatiable, horny vixen who walked into my lab determined to seduce me, the implications were staggering. The potential for a drug that could stimulate this receptor was irresistible. The thought of such a creation and the power it would hold sent a jolt straight to my cock.

Late at night, I found myself replaying the recordings of my sessions with Tania, the images etched into my mind like an erotic masterpiece. Her uninhibited lust was mesmerizing, her body quivering with need, every movement radiating raw, primal desire. The way she surrendered, completely at the mercy of her own arousal, was intoxicating. I stroked myself to the memory of her moans, the way her thighs clenched and opened, her flushed skin glistening as she begged for more. It was more than just a memory; it was a vision of power, of control over the mysterious switch that transformed her into a woman driven entirely by lust.

As I reached my peak, the thought surged through me like a revelation: what if I could activate this same horniness in any female I desired? The receptor, this “horny web,” wasn’t just a scientific curiosity. It was a potential key to unlocking a side of women that even they might not fully understand. I imagined the implications: the ability to heighten desire, erase inhibitions, and reduce resistance to raw, unbridled passion. Women, no matter how composed or restrained, could be guided by this irresistible urge, a hunger that could override judgment and self-control.

The thought consumed me. I envisioned perfect strangers, shy or aloof, suddenly unable to resist their own needs, their bodies betraying them as their lust boiled to the surface. Women who might never glance my way, now reduced to quivering, desperate sluts, begging for the release only I could offer. I imagined unlocking this power at will, flipping a switch in their minds and watching them unravel, their inhibitions stripped away, leaving only raw, physical craving.

I was still caught in the whirlwind of possibilities when, one day, I ran into an old friend. Over lunch, he enthusiastically shared his latest breakthrough: a predictive AI code that, he claimed, could redefine drug development as we knew it. The code, he explained, used advanced algorithms to analyze the three-dimensional structures of proteins, which it derived solely from their genetic sequences. This allowed it to design small molecules tailored to bind with extraordinary precision to those proteins, often with significantly higher affinity than their natural substrates, things like hormones, neurotransmitters, or intracellular signals.

The implications were staggering. These molecules, effectively designer drugs, could selectively alter cellular function with unprecedented efficiency. What caught my attention most was his claim that the AI could ensure the molecules avoided binding to unintended proteins, sidestepping the usual cascade of side effects that plagued traditional drug development. Even more astonishing was the potential timeline: what typically took twelve years and billions of dollars to develop could, with his method, be accomplished in just twelve days.

The moment he described it, my mind raced. This was the solution I hadn’t dared to hope for. A custom molecule, designed specifically for the horny receptor, could potentially bring my vision to life, a drug that would amplify desire and strip away inhibition with surgical precision. I asked him, as casually as I could, if he’d be willing to test his approach on a particular receptor I was researching. I kept the details vague, only mentioning it as a continuation of my work on ovulation-specific systems.

Weeks later, he walked into my lab and slid a small piece of paper across my desk. On it was the chemical structure of the molecule his code had generated. It was exactly what I’d hoped for, a blueprint to unlock the full potential of the receptor, turning theory into a tangible, actionable tool.

To avoid arousing suspicion, I quickly scribbled down a list of unrelated receptors, ones from my actual Ph.D. research, and waved it off as a broader investigation. “Just diversifying my focus,” I said with a shrug. He frowned, clearly annoyed, and muttered something about not running a free drug design service before leaving.

But I had the molecule in hand, the key to realizing the power I had only fantasized about until now. After he left, I turned my attention to the potential drug he had provided. The intricacies of its chemical structure were beyond my expertise, as I wasn’t a synthetic chemist. Fortunately, one of my roommates happened to be a skilled organic chemist, so later that day, I casually showed him the structure and asked for his opinion on the substance and how it could be synthesized.

After studying it intently, he muttered something about “Suzuki coupling” and a few other technical terms that flew over my head. Then, with a confident smirk, he declared, “Challenge accepted!”

Two weeks later, a large beaker of fine white powder appeared on my desk. The beaker was labeled tx34 and came with a handwritten note: “The molecule you requested, 99.99% pure, 134 grams.”

This marked the beginning of my experiments with the drug, which I decided to call tx34 for simplicity. A random, nondescript name like this seemed almost perfect for a potent and potentially dangerous substance. If it were ever discovered, a name like “slutifyer”, “desireX”, “OvuLust” or something equally descriptive would be disastrous. But tx34? It sounded scientific, clinical, and harmless - completely devoid of any indication of its true nature. It was the ideal camouflage for something so powerful.

The origins of the name didn’t matter much; what mattered was the powder inside. Its possibilities were boundless, and now, I had the means to begin exploring them.

I began dissolving it in various solvents and secretly administering it to lab mice in our animal facility. The results were astounding. The drug was highly effective at inducing copulation, and the mice only stopped fucking when I physically separated them. They exhibited an insatiable drive, completely fixated on mating. This was an incredibly encouraging result, the first proof of its power in action.

Curiosity got the better of me, and I tested a small amount on my own skin. Unsurprisingly, I felt no effect on arousal. Knowing the ‘horny receptor’ had limited expression in the male brain, I instead observed subtle changes in my thinking. Though hard to quantify, I noticed my threshold for risky behavior seemed to drop, and I even caught myself masturbating in the lab with the door unlocked. Beyond that, there wasn’t much of a shift. Then again, given that I was horny all the time, constantly fantasizing about bending over any attractive female in my line of sight, what could the drug possibly enhance?

My next step was to apply tiny amounts of the dissolved molecule to female test subjects. I was confident it wasn’t toxic, and the most obvious candidate for a human trial was my girlfriend, Susan.

Susan was a vibrant girl, with great tits, a firm ass, and a sunny personality that could brighten anyone’s day. She was always cheerful, always fun to be around. However, her libido was another story. As I’d mentioned before, sex was enjoyable with her, but she rarely wanted it more than once a week. It wasn’t that she wasn’t affectionate; she just didn’t crave it the way I did. In fact, she had even suggested I find other women to “work off my excess energy,” as long as she didn’t hear about it. It was a pragmatic solution, but not one that really addressed my needs.

If tx34 could awaken the kind of relentless, primal desire I’d seen in the lab mice, it would turn Susan into the partner I’d always fantasized about, a woman who couldn’t get enough, always ready and eager for more. This could be the ultimate test of the drug’s potential and put an end to the many nights where I was left using my hands to satisfy myself.

While in town, I picked up a tiny test bottle from a perfume store and discreetly added a few milligrams of tx34. Susan, with her usual carefree and unconcerned attitude, didn’t hesitate to try it when I presented it to her. The result was extraordinary. We had the most intense and passionate sex we’d ever shared.

For the first time, she took complete control, straddling me with a ferocity I hadn’t seen before. Where I was typically the one leading, she took the reins, giving me a hard and sustained ride while I lay back, letting her work her magic. I was mesmerized by the way her hips gyrated on my shaft, her movements fueled by an insatiable hunger. She reached climax after climax, screaming with pleasure, her legs trembling as her pussy gushed with each orgasm.

When she finally collapsed in exhaustion after five or six shattering orgasms, I rolled her onto her back and took over. I pounded her in missionary, my thrusts deep and unrelenting, driving her to a few more orgasms before I unleashed my load, burying it deep inside her.

What surprised me most was that she wasn’t done. Her craving hadn’t been sated. She demanded a second round, using her hands and mouth to bring me back to full hardness. Thankfully, my recent escapades with Tania and Hannah had done wonders for my stamina, and I was able to rise to the challenge quickly. We went at it again, her body trembling under me as I drove her over the edge once more. When she finally tapped out, utterly spent, she lay back with a satisfied grin.

“You’ve learned some new tricks,” she said, panting and grinning, her cheeks still flushed. “I don’t want to know who taught you these skills, but please express my deepest gratitude to her,” she added, laughing breathlessly. She paused, her fingers absently tracing patterns on my chest, her eyes wide with a mix of wonder and exhilaration.

The next day, Susan seemed unusually relaxed, lounging around with a satisfied smirk that hadn’t left her face since the night before. When I tried to initiate anything that evening, she laughed softly and shook her head.

“Are you kidding me?” she said, grinning as she playfully pushed me away. “Last night was enough to last me a month. I can barely move as it is.”

I didn’t press her, but as the evening went on, I decided to add a small amount of tx34 to the massage oil I was using on her. The change was almost immediate. What started as a simple massage quickly turned into something else entirely. Her body responded as if electrified, her breathing deepening, her skin warming under my touch as she shifted and arched beneath my hands.

Her figure was beyond perfect, her toned back flexing as my hands worked their way over her smooth shoulders and down her spine. Her skin was flawless, glowing in the dim light, every curve begging to be worshipped. As I moved lower, kneading her firm, round and tight ass, she let out a soft moan that sent a fire straight through me.

Turning onto her back, she gazed up at me with eyes filled with a sudden, overwhelming hunger. My gaze was drawn to her massive, incredible tits - jugs that were impossibly full and perfectly shaped, sitting high on her chest with nipples so large and proud they seemed to beg for attention. They rose and fell rapidly with each deep, needy breath, her body trembling as her thighs shifted apart slightly, exposing her beautiful, smooth pussy.