Ben's program

2 hours earlier, as Anna was sitting on the toilet, Ben was entering his instructions into her profile:

- For changes made by Master PC to Anna, no harm will come to her. If an instruction would be harmful to her, for example by overloading her nervous or circulatory system, her physiology will automatically adapt so that the instruction can be executed without any risk.

- That also includes psychological harm like addiction. No matter how good the changes will feel for her, she won't develop any kind of dependency on the program or any effects of the program.

Ben hit Enter, and saw the option to save the instructions as a shortcut, which he immediately did, and applied this "Protection Clause" to himself as well.

"Well, that seems like a solid baseline, so now we can have some fun..."

He opened Anna's profile again, and took a few seconds to marvel at her beautiful, naked body sitting on his toilet. He noticed her arousal slowly climbing, without any intervention by himself.

"I never would have guessed that she could be so kinky", he thought. "She gets really turned on by the thought of getting controlled. By me, of all people! Ah well, it seems our wishes kind of align here. But I will need a bit more time than Anna's short pee break to write all this down..."

- Anna stops thinking any conscious thoughts and keeps sitting on the toilet until this instruction is reversed.

Then he changed back to his profile, and entered another set of instructions:

- Ben is a very perceptive lover. When having sex with someone, he is able to detect the slightest reactions of his partners, and quickly learns which techniques have the most stimulating effect in a given situation.

- Ben's penis automatically changes in size and form in accordance to the preferences of his current sexual partners. If the conscious and subconscious preferences of the partner differ, the changes are optimized for most pleasurable stimulation during vaginal intercourse, while still fulfilling the conscious aesthetic preferences of the partner at least above average. If the partner is unaware of the existence of the Master PC program, then the penis will stay in this form to avoid drawing any kind of unwanted attention. During penetration small changes of 10% in every dimension maximum are allowed to adjust for the orifice being penetrated and to maximize the pleasure of the partner. As soon as the penetration ends, the penis changes back to the original form taken for this partner. If the partner is aware of the nature of Master PC, this safety measure doesn't apply, and the penis will always take the optimal form for the greatest stimulation in the immediate situation. Unless otherwise specified in a future instruction, throughout all the changes the penis will retain all characteristics of a healthy, uncircumcised human penis, and won't take any more exotic forms, even if they would be better suited for stimulation.

Ben chuckled a bit at the huge wall of text, but he didn't want to be surprised by his cock suddenly turning into a two pronged corkscrew or something, just because of some girl's unknown kink. "Let's stick with a more or less normal cock for now, just take the best possible version of that.", he thought.

- Ben has excellent physical and sexual stamina, and is able to perform even physically demanding sexual techniques of any kind over a time of at least four hours. Without reducing any kind of sensitivity to pleasure, he can keep himself from having an orgasm by any kind of common sexual stimulation over the same time, if he wants to.

- He has complete conscious control over his erection.

- After having an orgasm, Ben doesn't need any kind of refractory period. He can maintain his erection and keep being stimulated without needing any pause.

- The volume and strength of his ejaculation is tripled, as long as that doesn't cause any discomfort in his sexual partner. His ejaculation is noticable for his partner as a pleasurable sensation.

- The previous instruction doesn't apply when wearing a condom, to prevent possible damage to it.

- Repeated orgasms don't decrease the quantity of ejaculate.

- Ben's precum and ejaculate now have aphrodisiac properties, their smell mildly increasing sexual arousal, and directing the sexual arousal of the exposed person at Ben, if they are in general sexually attracted to men. When drunk or directly applied to mucous membranes, they have a sexually stimulating effect, reducing the threshold of pleasure needed to reach orgasm by 20%. The taste of Ben's ejaculate is always perceived as pleasant. Ben can not get affected by his cum or precum through the mucous membranes of his penis, but may be affected by the smell or by oral ingestion.

"Okay, that's enough for me. Now let's finally get to you, my love." Ben murmured.

Looking back at the computer model of Anna's petite body sitting on the (not visible) toilet, staring ahead unfocused, he felt a dull, pleasurable throb in his penis, and his whole body tingled with anticipation.

- The next time Ben tells Anna to "cum for him", she will have an orgasm with triple the intensity of the strongest orgasm she has ever felt until now. This orgasm will last for 60 seconds. This intensity and duration of orgasm will be the new baseline for the weakest possible orgasm Anna will have in all sexual encounters with Ben. All of the following commands won't take effect until 20 minutes after this orgasm, and will then slowly fade in over another 20 minutes.

- Anna can keep being aroused and produce lubrication as long as she wants. She never needs any artificial lube for vaginal intercourse.

- Her vaginal tissue and pelvic muscles are optimized to stimulate my penis, making vaginal intercourse three times more pleasurable than normal.

- Her vagina becomes vastly more sensitive to pleasure, so that vaginal penetration is now as intense as external clitoral stimulation.

- Anna is fully multiorgasmic and doesn't need any refractory period between orgasms. Because her orgasms now last at least 60 seconds, an intense enough stimulation can lead to orgasms stacking on top of each other.

- No matter how overwhelming her pleasure is, she will not fully lose consciousness. She may however enter a fugue state, where sensory input besides pleasure takes a lower priority in her consciousness

- All of her skin and erogenous zones increase their sensitivity to sexual pleasure tenfold. Other sensitivity (temperature, pain, etc) isn't changed.

Ben paused typing to review his last commands.

"Hmm, this will surely make her cum nonstop, even if I do nothing but stroke her breasts and whisper in her ear. And I bet it would be nice to have an hair-trigger like that, but I think we both want a little bit more out of this. There is this control element that has me hard, and her dripping. So let's play into it."

- Anna needs explicit permission for every orgasm from Ben. Stimulation beyond her usual orgasm threshold without permission to cum will increase her pleasure further, but also increase her desire for even more pleasure. Only an orgasm will sate that desire, and give her a feeling of satisfaction and relief. If she is kept at high stimulation levels without being allowed to orgasm, she will need multiple orgasms to be fully statiated.

- Anna will also immediately orgasm whenever Ben ejaculates in or on her body. For these orgasms, no additional explicit permission is needed.

"And now, let's make it even more pleasurable for me, and even more devilish for her!"

- Anna's vaginal secretions are a strong aphrodisiac. The smell increases sexual arousal significantly and directs the arousal of the exposed person at Anna, so that direct up-close exposure to Anna's secretions leads to a strong desire to engage in sex with Anna, even when in contradiction to the usual sexual preferences of the exposed person.

- When Anna's aphrodisiac is ingested or applied to mucous membranes, it has a strong sexually stimulating effect, reducing the threshold needed to reach orgasm TO 20%. Unlike Ben, Anna isn't immune to exposure by the mucous membranes of her vulva and vagina. However, if her sexual arousal is low, she has a very high resistance to her own secretions. If her arousal is below 4/10, the aphrodisiac effect just leads to a slower decay of her arousal. At or above 4 however, the effect is strong enough to lead to a positive feedback loop, constantly increasing her arousal at an accelerating rate, until she has had enough orgasms to sate her arousal.

Ben noticed his fingers trembling. His mouth was dry. This was the rush of omnipotence he had been afraid of. He took a deep breath and stood up to get a large glass of cold water. He downed it in one, and it also cooled him down a bit on a psychological level.

"Whoa, that escalated quickly!", he thought. Now, a bit more level-headed, he read his instructions again.

"Okay, most of it is 'fine' in the sense that Anna and I both consented. She gave me pretty much a carte blanche, and I think nothing here violates the things she ruled out. I'm not really sure why I put this thing about her being able to seduce anyone regardless of sexual preference in, that is surely problematic. But we can talk about that later, for now this is just us two, so no problem there, my sexual preference is pussy anyway, and hers specifically.

He looked again at her model, those beautiful hazel-green eyes, her cute face, and thought about the kinky mind he uncovered today. He just laid a fuse that would turn that cute, extremely intelligent girl into a cute, extremely intelligent and insatiable sexpot. He had no doubt that now that it was there, he would light it. Tonight would be the greatest firework that anyone had ever seen.

He noticed the small, neatly trimmed bush on her mound. "Cute!" he thought. He had last seen her completely naked a few years ago, when they had been on vacation with a group of friends and had visited a sauna. Back then, she had shaved her pubes completely.

"I'm not sure, what I'll prefer in the long run, probably whatever you like better. But for tonight, I think hairless fits the whole magical nymph/succubus theme better."

He changed to the console one final time.

- Anna's pubic hair will vanish completely. This command will take place without the 20 minutes delay and fade-in, 5 minutes after the orgasm that triggers all the other commands. This concludes the list of delayed commands, from now on commands will resolve immediately again.

He took a deep breath and pressed Enter.

He looked at the clock. 20 minutes. It had felt like an eternity.

- Anna's pause ends now, she will regain consciousness and move normally again.

He watched her trying to dry her pussy in great detail, and then pull up her panties. When it came to her jeans, she hesitated.

"Hey Ben!" she shouted at him through the closed door. "Do you think you could magic up some comfy sweat pants or something for me?"

---

After they had settled on the couch, Ben said to her: "Okay, full transparency: Figuring out the changes was more difficult than I thought, so I kinda froze you for 20 minutes earlier, when you were on the toilet."

"You froze me? And then you came in to sample the goods and make sure everything is to your satisfaction, I guess?"

Ben blushed. "No! I swear I didn't do anything! I was only on my computer, looking at....erm..."

She giggled. "Relax, I was just kidding. And anyway, I don't think I would have had a problem with that. We will probably end up doing far crazier stuff down the road. And at that least that would have explained...." now she trailed off and blushed a bit.

"Well, let's watch our movie first." Ben smiled. "I won't tell you any specifics, but you are right, it might get pretty interesting soon."