Sexual Modification (1/2)

Scientists create the body modification for unlimited, safe, pleasurable sex. A loose prequel to the ‘Cumdumps’ story. Part 1/2.

Nancy’s work log.

===

After three years of hard work, our project is nearing completion. All the preliminary tests have been successful, only the endurance test remains. If it goes well, I’ll approve the expansion of the group of test subjects.

Mother, I’ve almost fulfilled my promise. Soon no woman will suffer from bad sex.

===

Nancy saved the log, closed her laptop, stood up and began to undress for the testing run. She removed everything, including her wig, leaving only her perfect, hairless body, with the locations to glue sensors and electrodes marked with crosses with non-washable markers. Sometimes people have to make sacrifices for the sake of science.

She lay down on the couch. Three years ago, they started with a simple, standard medical couch. Gradually, they improved it to make testing easier, and now it was a super-comfortable anatomical couch, with adjustable supports and moving parts that allowed a woman (or man) to lie comfortably for hours of sex, in any pose. They’ve already patented and sold the design. The income has greatly improved their lab budget.

Megan, her first assistant, came closer and began fastening straps around Nancy’s waist, shoulders, hips, arms, legs… Soon Nancy was perfectly immobilized, only her feet and forearms remained free to move. They had to perfect the restraint system when they solved the sensitivity problem two years ago, and Nancy began to wriggle intensely during each test run.

“I’m so eager to finish the testing,” Nancy said as Megan glued sensors and electrodes all over her body and skull. “If I pass the endurance test, I will consider the modification good enough to be used on other people.”

“I can’t wait!” Megan smiled and turned on the system. The screens began to show all kinds of telemetry about Nancy’s health. “It’s just a sophisticated torture, watching you have all this pleasure and not being allowed to have it myself!”

They laughed, and Megan began adjusting the sex machines. A simple standard design, though of high quality. They mimicked the thrusting motion of a man’s penis, had interchangeable heads, and allowed for a wide range of penetration speeds and depths.

For today’s test, they needed all three of them to penetrate all of Nancy’s holes at the same time. One by one, Megan attached the largest dildos they had. 35cm in length and 9cm in diameter, ribbed, they looked more like torture tools than pleasure devices. Nancy has tried them on each hole before, one at a time, but today she’ll get all three at once, and for many hours without a break. That’s the endurance test.

Nancy lay, relaxed, staring at the wall behind her (her head thrown back comfortably, positioned for straight deep throat) and moving her toes as Megan slowly pushed the dildos into her vagina, anus, and throat, one after the other, all the way down. They slid smoothly, although there was no lube. The body modification gave Nancy very durable and slippery epitelium tissue in those places.

Nancy moved a little, adjusting her position, then relaxed again with a sigh of relief. She was wonderfully stretched inside, the lower dildos almost reaching her ribs and the upper almost reaching her stomach. No pain anywhere, no gagging reflex, she breathes freely. Nancy tried to moan softly. Yes, she can moan too. She began to feel aroused just by lying in this fixed, impaled position.

She lifted her hand and wiggled her fingers. “It’s okay. Begin.” Since they’d done the throat modification a year ago, they’d learned the sign language to communicate with Nancy while her mouth was occupied.

“Confirmed,” Megan said, turning on the recording and the sex machines at the same time. To begin, they moved slowly, pulling the dildos out 30cm in ten seconds, then pushing them in again, then pulling out again… Nancy sighed with pleasure. Another effect of the modification gave her a semi-orgasmic pleasure from each movement inside her, in each hole. And her orgasms were specially delayed to give her time to enjoy that pleasure.

She raised her hand. “Faster.” Megan gradually increased the speed to 30 thrusts per minute. “Faster. Faster.” Now she had 90 thrusts per minute, faster than most men usually do. Nancy moaned softly. “Faster.” 120 thrusts per minute. “Okay.” Although the machines could go up to 350 tpm, they agreed that 120 tpm would be enough for hours of sex.

Nancy lied with her eyes closed, feeling the waves of pleasure rolling over her. The sex machines were thrusting slightly on different speeds, so sometimes two or three struck her together and sometimes they thrusted in turns, like a weird piston engine. So good…

During the tests she often thought of her mother. Clara was a slut – and no one knew Nancy’s father – and she died young. Nancy grew up in her brothel, raised by all the sluts together, learning all about sex. At first she wanted to be like her mother and become a sex worker, end even started working like that, but then she realized that she wanted something else. She didn’t want to be hurt and abused, she wanted all women to be able to have safe, reliable, pleasurable and unlimited sex. And she was determined to make that happen, so she became a scientist and started her personal project as soon as she could. It was her gift to her late mother.

Her first orgasm came after ten minutes of intense stimulation. Nancy was already in heaven from the constant, gradually increasing, near-orgasmic pleasure, but the orgasm, as usual, was much stronger. Nancy moaned softly and would have wriggled and shaken if not for the restraints. She curled her toes and gripped the couch with her fingers. In ten seconds she relaxed with a sigh, her flushed skin covered with sweat. Now to the next orgasm in ten to fifteen minutes…

“Everything’s on track,” Megan confirmed. The telemetry registered Nancy’s heart and respiratory rates, blood pressure, and a dozen other parameters. The orgasm counter read one.

Over the next hour, Nancy had five more orgasms. Each time her body shook uncontrollably and writhed in her straps. Megan watched the readings carefully and reported: “Heart rate normal, respiration normal, blood pressure normal…”

Nancy signed “okay”. The modifications had made her intimate parts resistant to physical stress, and the endurance test should have no harmful effects. After another orgasm, Nancy raised her hand: “Faster.” Megan set the machines to 140 thrusts per minute. They had been doing this in short runs before; they were breaking new ground and only now were they beginning the real endurance test.

At the end of third period, Megan’s phone rang. She answered.

“Hello… Cindy? What? Ouch. Stay there, you can come to McDonalds. I’ll think of something to help you soon.”

Megan ended the call and turned to Nancy, who was now moaning nonstop.

“Nancy? Can you hear me now?”

She raised her slightly shaking hand. “Yes.”

“Cindy lost her keys and can’t get home. I need to give her my copy. But… there’s no one else here to assist you… I’m terribly sorry. Let’s stop the test, and I’ll run to save my daughter. Sorry again…”

Fingers wiggling. “No. Don’t stop. I don’t want to lose the progress. Leave me here and go help. I’ll hold on.”

“Are you sure?”

“Yes. Go and come back.”

“Okay! I’ll be back in half an hour!”

Megan tucked the remote under Nancy’s hand.

“Here. Press the big red button to stop if you need to. I’ll be right back!”

And Megan ran out into the parking lot.

Nancy was floating in an ocean of pleasure. Three more orgasms. She opened her eyes. Half an hour passed, Megan should be back soon… She closed her eyes again and moaned loudly. So good…

Six orgasms later, and even the mid-orgasm intervals were now filled with the near-orgasmic pleasure. The dildos kept thrusting into their holes like a perfect engine. Where is Megan? Something must have happened to her…

During her next orgasm, her hand twitched and she swept the remote control to the floor, completely out of reach. Ouch. The remote clicked as it hit the floor, and Nancy felt the dildos intensify their thrusts. Now they were doing about 200 tpm. Ouch. Ouch. Mmmm… Nancy shook with another orgasm.

An hour passed. Nancy had had dozens of orgasms, and now even mid-orgasmic pleasure had ceased as she climaxed constantly. Megan? Where is she? Nancy began to faint. The dildos were still going strong, beating her mercilessly. Oh yes… yes… So good, still so good… She came again. Megan? Save me, Megan. No, I’m fine. Everything is fine. Just another orgasm, and another…

Megan ran into the lab without taking off her coat.

“Sorry! Sorry! I had a car accident, everyone’s fine, but the road was jammed for three hours and I had to wait for the police… How are you?”

Nancy did not raise her hand. She wasn’t moaning now, and only her ragged breathing over the sound of fast-moving machinery indicated that she was still alive.

“Shit!”

Megan jumped to the controls. The monitors showed that Nancy was mostly okay, just lost consciousness. The orgasm counter was approaching fifty, and it was incrementing right in front of Megan’s eyes. Faint or not, Nancy’s body continued to respond to the stimulation.

Megan hit the “stop” button, threw her coat on the floor, and began to pull the dildos out of her. Clear liquid poured from Nancy’s vagina. She sighed as her unconsciousness gave way to a deep sleep. Megan removed Nancy’s restraints, disconnected the electrodes, wiped her down and covered her with a light blanket. She quickly checked the telemetry data, stopped the recording and saved everything.

Now… It’s the perfect time for the post-test checkup. Megan picked up the endoscope and approached the couch. Another effect of the body modification: Nancy’s holes, which had been gaping horribly just a minute before, were quickly shrinking back to their normal size. Megan had barely enough time to insert the endoscope into all three holes, one after the other. She examined the epitelium. Perfect! Even after hours of such extreme stretching and rubbing, Nancy’s insides were undamaged. Not a scratch, not a drop of blood anywhere.

Nancy slept for an hour. When she opened her eyes, Megan leaned over and kissed her cheek. Nancy pulled her closer and they shared a long kiss.

“Ohh… Meg, it was so wonderful… How’s the data? And what happened to you?”

Megan helped Nancy to sit down, brought her some sweet tea and sat next to her. She told everything.

“Nancy! Oh my God! You scared me. I got in a car accident on my way here. But you’re okay, and Cindy’s okay, and the data… Look, I saved everything!”

They studied the telemetry data and discussed the results for another hour. Everything went well, much better than they expected, except for the loss of consciousness towards the end.

“I see,” Nancy said. “We have reached another limit. We upgraded the intimate parts, now the rest of the body can’t keep up with such an overload…”

***

Nancy’s work log.

===

The tests have been passed. Our modification works perfectly. I authorize large-scale testing on women, and begin work on a similar modification for men.

However, we have reached another limit. To handle intense sexual activity, we now need to strengthen the cardiovascular and respiratory systems, add support for the vagus nerve, and improve glucose and oxygen transport to the brain and muscles.

I recall that several other labs in our institute are working on related projects. I’ll ask them to join forces.

===

Nancy saved the log and got up. The lab was even more like the OnlyFans studio now, with three girls moaning on the couches at the same time, two from toys and one being gangbanged by four men. Another half of the lab was quiet and busy, working on the modification upgrades.

Nancy pulled on her coat.

“Meg, you have the watch. I’ll be out for the rest of the day.”

“Aye. Where are you going?”

“Another test, of course!” Nancy smiled. “To my brothel.”

“Brothel? Nancy, you haven’t been to your brothel in years!” Megan was surprised.

“That’s right, I haven’t been there since high school. Today I’m going to visit my old friends, talk a little, and ask to do the whole shift myself. If all goes well, we’ll move our testing center there. We will create the true paradise of unlimited safe sex for everyone.

Megan hugged her friend.

“That’s great! Have fun.”

“I’ll tell you all about it later.”

“Hi Tiffany!”

A woman in her fifties stood up from the cash desk and raised her glasses.

“Nancy? Nancy! Oh God, how long have I not seen you!”

They hugged and kissed, laughing.

“You’ve grown so much, Nancy! What a beautiful woman you are now!”

“And you haven’t changed at all!”

“What a flatterer you are! Of course I have changed.” She made them coffee. “I’m getting old. I still work here, but only as an administrator, you see.”

They sat down and talked about everything.

“What do you do now?”

“I’m a researcher now,” Nancy smiled. “And my sexuality modification project is almost finished!”

Tiffany admired her. “So you have done everything you promised when you left. I’m so proud of you!”

“Almost done. And now I have returned to offer you the results and ask for your cooperation…”

Nancy told everything. Tiffany was amazed.

“Amazing! I don’t know what to say. That sounds awesome! Yeah, of course, anything for you, honey, I’ll do anything for you and your science!”

Nancy hugged her old friend.

“Thank you so much! I remember how hard it was for Mom and other girls, they suffered every day. Now I’m ready to give girls pleasure, not pain. Oh yes, and no unwanted pregnancies, everything fully controlled simply by the woman’s wish.”

“You’re a genius, Nancy.”

“Not yet. But I could be!”

They laughed.

Girls came and went as they talked, meeting and seeing off clients. They exchanged greetings. There were several women of Nancy’s age, those who had been her childhood friends, and they stopped to chat. But mostly there were unknown young girls, some of them teenagers. Nancy nodded. Everything was like her childhood.

She got up and walked around. Nothing has changed here. The same shabby carpets, the same wall color, the same familiar body odors in the air, the same moans from behind the doors… Everything said “home” to her.

“So,” Tiffany looked at her. “What do you want to do? What’s your next step here?”

“Do you have a spare room? Let me take the whole shift. I need to test my new skills.”

Tiffany nodded. “Okay. The twenty-first is yours. I’ll send you easier customers to get you accustomed after such long break…”

“On the contrary! Send me the worst ones. Those with painfully large dicks, those who like rough sex, those who want to gangbang a single girl… Send anyone. I have several days of real field endurance tests ahead of me, and I want to start very hard from the beginning. There’s no point in wasting time on the soft ones.”

Tiffany shook her head.

“As you wish…”

“Perfect!” Nancy took off her coat and went into the room.

She took off her clothes and hung them on the wardrobe. She considered putting on a usual transparent lace robe, then decided to just go naked. She checked how her glued-on wig was holding (some customers will pull her hair hard for sure), brushed her fake brunette hair and put on some lipstick. Now she looked like her mother, Clara. She used to come here naked and just with makeup on.

Soon the first client knocked on the door.

Nancy had it all that day. Huge dicks in all her holes, brutal men, pulled hair, hard slaps, two long rough gangbangs, everything. She was surprised at how much pleasure she got from all of it – well, almost all of it. The pain from the beatings sometimes killed her excitement, although not for long.

Toward midnight, the flow of customers slowed. Nancy showered, dressed, and came into the kitchen to eat. Tiffany stopped by and they chatted.

“So how did it go?”

“Almost perfect. But I can already see the areas for improvement. I’ll take the shifts for two days more to confirm, but I think I’ve got it all.”

“Congratulations!”

Nancy smiled and ate pasta.

“Thank you! And now comes the second part of what I want to ask you.”

“Go on.”

“I’m going to start applying the modification to the girls here. Those who volunteer, of course.”

Tiffany laughed. “You’ve got a whole bunch of volunteers here. I wish you could hear your shrieks of ecstasy! Pure music! We all ran to your door to eavesdrop. Now all the girls want the same thing.”

“Perfect!” Nancy smiled. “Then I’ll send our team here to apply the modification.”

“How hard is it?”

“Not much. A few injections, then up to a week off with little sickness, and you are good to go. Subsequent upgrades are much easier.”

Tiffany looked at her. “Unbelievable! So simple…”

“After three years of hard work by the whole institute, it is!” Nancy giggled. “And now I’m ready for bed. See you tomorrow!”

“See you!”

***

Nancy’s work log.

===

The field tests went well. But there are several things we need to improve:

* Increase muscle regeneration and strength;

* Add skin regeneration and improve toughness;

* Increase protection against physical trauma;

* Optimize immune system response;

* Do something about pain.

The first thighs are easy, but the pain issue needs brainstorming. I’ll pull some people from the labs today.

===

“I was right about the field tests,” Nancy paced back and forth in front of the audience. “We missed a lot of things in our controlled lab environment. Now it’s clear to me that we need to make the whole skin as resistant and regenerative as we made the inner epitelium. And probably more sensitive to the touches of pleasure, too…”

“And pain,” Megan added. “We need to do something about that.”

“Exactly. Pain is the main obstacle. Once the client starts hitting me really painfully, the pleasure drops…”

A man in the corner asked, “Have you tried BDSM with them?”

“Yes, quite a lot. The pain is distracting, I cannot concentrate on the pleasure and I lose interest in sex. All my sensations turn into pain…” She sighed. “I understand what to do with skin and muscles. But what to do with pain? We can’t turn it off completely, it’s still an important signaling system. Any ideas, guys?”

Silence in the room.

Suddenly, Thomas, a young man from the neuroplasticity lab, said softly from the center of the room, “Can you increase arousal to the point where pain is overridden by it?”

Nancy looked in that direction and nodded thoughtfully. “Interesting idea. Not quite, but it must be close.”

“Or,” Thomas continued, “we could rewire the pain-pleasure sensory centers so that arousal always takes precedence. If it’s just pain, it’s still just pain. But with even a little bit of arousal, the pain starts to amplify the arousal and pleasure.”

“As is the case with some of the BDSM addicts,” the first man added.

“Exactly!” Thomas nodded enthusiastically. “I could do that. I’m working on those brain areas anyway.”

“Perfect!” Nancy smiled broadly. “Thank you all. Thomas, come with me, let’s discuss the details…”

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