She's pretty excited about everything

"This is getting out of hand," Tina said. "Now there are two of them!"

"Yeah, but you like it," you said.

Tina just smiled and nodded as she relaxed back against Isabel, the alien officer now looking completely human, having demonstrated her own control of the simulation by giving Tina three rows of three breasts, and giving herself the extra arms needed to play with all of them. Tina's tailtip, meanwhile, lazily poked in and out of Isabel's asshole.

"So what do all these upgrades do, anyway?" you asked Isabel--she had insisted from the moment you returned to the simulation that you use that name and not her real one, in order for her to better adjust.

"Well, probably the most important one is the defensive systems. Near-perfect shielding against electromagnetic disturbances as well as a detection and tracking system that can allow us to eliminate or evade stellar objects. The station also has standard stealth systems, which render our vessels undetectable by anyone else."

"So we're pretty much impregnable and invisible now?"

"Except against a T'nin vessel, yes, and that only because their commands would override my own," Isabel said.

"What about weaponry?" Tina said, sounding just a little too eager. Of course, she wouldn't have any say in how that was used.

"Completely state-of-the-art, as of a year ago, anyway." Isabel had also adjusted to using Earth's time scale quite rapidly. She'd also picked up a decent grasp of the language; you guessed she focused more on that sort of thing when integrating data from the simulation rather than on matters of protocol. "The weaponry can be adjusted to allow you to perfectly cook an egg in its shell slowly over hours, or collapse a star to a black hole in microseconds."

"You have weapons that can turn stars into black holes and you give them out to everyone?" you asked, taken aback. "Even officers as junior as yourself?"

"All T'nin military academies have extensive psychological screening requirements. Nobody who can't pass that gets out of their first semester," Isabel assured you. "Besides, anyone who tried to turn a star into a black hole had better give a damn good reason at their court-martial or they might end up getting thrown into one."

"Good thing I don't want to collapse stars like that either," you said.

"So no problem there, then," Isabel concluded.

"How about the new engines?" you went on.

"Identical to those on the Hak'uys, scaled to this station's size, of course." The station was quite large, despite not needing physical space for human bodies, simply due to the requirements of housing the computers, mind-chips, and hangar bays for the maintenance drones, as well as needing enough surface area for the solar panels. "The station's acceleration and top speed will not be quite as high as a T'nin warship's, but it will still be able to cover the distance from here to the--" She paused, accessing something in memory. "--Andromeda galaxy in three days. Four if you take the scenic route."

"And yet it took you a year to get here?" Tina put in.

"The universe is a much larger place than you think, though admittedly we were not going at top speed, to avoid unnecessary wear on the engines."

"And that three-day estimate?" you asked. Isabel saw where you were going.

"Is taking it slowly enough to avoid potential significant damage to the engines, yes."

"I think you mentioned something about the computers, as well," Tina put in.

"Yes," Isabel said. "Given the need to retain the original network of servers as a backup, we couldn't upgrade the station to its maximum potential, but the simulation is currently running on a network of microscopic subquantum computers. Just one is sufficient to simulate the entire known universe--known to us, of course--within probabilistic error, and the size allowed us to install millions of them for every processor originally built into this station."

"So if we wanted to, running on those, we could render this simulation in a completely realistic style?" you asked.

"Yes, and retain all the--hentai?--alterations that were introduced in the design. It would allow for things like true randomness, as well, which might be important if we are not near any stars, since a substantial part of the simulation requires that randomness."

"Speaking of that," you said, "how about the power sources? I think that's the last major thing you put in."

"The new computers and defensive systems are extremely power-efficient, and can run off of your current power-generation capabilities," Isabel assured you. "However, we've also installed fusion reactors that operate at near-perfect efficiency and transform heat directly into electricity. They can run using even trace amounts of any elements lighter than iron."

"I'll get the drones stocking up all on that from Earth," you said, adding the routine to their standing commands. Construction, repairs and manufacturing were still higher priorities, of course, but you intended to build up as big a stockpile of fusible elements as possible.

"They can also be reconfigured to serve as fission reactors, though that is, of course, less efficient. However, our scans of your planet detected substantial amounts of fissile elements, and the radiation shielding around all vital components is effectively perfect."

You and Tina looked at each other, and you knew she was thinking the same thing you were. "'Any sufficiently advanced technology is indistinguishable from magic,'" she quoted.

"Well, it's not that," Isabel said, chuckling. "We might have near-complete control over the form of matter and energy, but even we haven't figured out how to create it from nothing."

"Which reminds me," you said, "did you install any body fabricators?"

"There are a few, yes, in a new hangar bay that is also stocked with a few short-range manned craft. We have figured out matter transmission and reconstitution--effectively, teleportation--but it is highly energy-inefficient and so we prefer such vessels unless absolutely necessary."

"Which, I'm guessing, almost never arises since you don't send physical bodies out of range of their mind-chips," Tina concluded.

"Correct. Crafting a new body is far simpler than teleporting one, and we can usually disconnect the mind-chip in advance of bodily ****." Isabel shook her head. "The psychological impact of being in a body as it dies is truly tragic."

"Seeing our world decimated from afar was bad enough; I can't imagine what it would be like to remember such an event firsthand and live to speak of it."

"Exactly," Isabel said.

"One thing that occurs to me," Tina said, "is how you folks would know where we are if we leave."

"All T'nin engines emit a trail that can be readily traced by any other T'nin vessel. It's an integral part of the design; attempting to remove it would render the engines inoperable." She smiled. "Believe me, we've tried. But no other species has ever figured out how to track us that way. The stealth systems similarly do not work against T'nin detection systems."

"Seems we got lucky in our choice of allies--such choice as we had, anyway," you concluded.

"That reminds me," Isabel said. "There's one thing that I need to do, to avoid unfortunate incidents between us."

You cocked your head in curiosity, and then Isabel spoke much more formally.

"Katelyn Mills, I, Third Ensign Izalbt of the T'nin military, hereby grant you my full and free permission and consent to alter me in any way you see fit, provided only that such changes do not interfere with my ability to carry out my assigned duties, do not impair my knowledge or memory of my true identity, or cause me to be unable to freely exercise my co-equal rights in determining how any T'nin technology installed on this station is used."

Your jaw dropped again.

"I don't want anything like that getting between us," she explained, casual once more. "Just don't go abusing it, OK? And I reserve the right to add more stipulations if I think of them."

"Trust me," you said, "I had no intention of doing much of anything to you, especially after you just told me about everything you folks can do! That's something I never want to be on the wrong side of."

Even as you spoke, you could see the control flows altering themselves, many of the automatic kill switches that would have triggered upon any attempt to modify Isabel deactivating. There were still a few parts of her memory that were blocked off to you--you assumed those had to do with things like control codes for the new tech--but by and large your freedom to change her was vastly expanded.

"Well, try something," the ambassador said. "You've still got this place running entirely on your own stuff, so there's no harm in it. If things shut down because we haven't gotten it quite right you can just undo the changes and it'll come back," she assured you.

Your dick had been growing steadily harder as Isabel had been listing off the new capabilities of the station, and her preemptive grant of consent made it fully erect. "Suck me off, then," you said--not a request, but a mental compulsion for Isabel to give you a blowjob.

The only thing that changed was that in moments your dick was engulfed in a warm, wet mouth as Isabel drew on the combined sexual experience of humanity to give you the best head you'd had since getting a cock.

--

"Fuck, you gotta do that again," Isabel said, panting since she'd turned on her ability to feel fatigued from sex, as you sandwiched her between your original body and a second, identical one you'd created for the purpose of fucking her pussy and her ass at the same time. Being in two places--one of them entirely new--at once had been a little disorienting at first, but it seemed your virus had been anticipating such a thing ever since you'd taken over Tina's form shortly after upload, and had refined the procedures necessary to give you proper and independent control over both bodies, and allow you to process both sets of sensory input without confusion.

"Next time you should turn on pain," you suggested. "Tina loves it when I do that to her."

"You could do that to me," Isabel reminded you.

"Not sure if I want to. Discomfort and pain can be extremely overwhelming and traumatizing experiences, especially if you're not used to them."

Isabel nodded, understanding what you meant. "I'll turn it on next time, then. It's completely fine as long as it's my choice, after all."

You pulled out, deleting one body, strands of cum trailing between the tip of your dick and Isabel's slit.

Tina looked up from where she'd been masturbating in a corner of her bedroom, watching as you fucked Isabel silly on her bed, denying her the use of it. "How much longer until your ship departs?" she asked.

"A few days. We're running final diagnostics on the new systems to make sure everything's integrated smoothly, but nothing's come up yet, and I doubt anything will."

"Any chance you can give me a tour? Though I'd rather just have my normal rack," she said, still with the nine tits Isabel had **** upon her.

"I can have you and Katelyn on board in moments," Isabel said, resetting Tina's breasts at her request. "I've already made a body for you, complete with the extra boobs, though not the tail. That sort of customization isn't worth the energy."

Tina nodded. "Katey gets rid of it plenty already."

The rest of the simulation froze, and, as Isabel promised, moments later the three of you were waking up in the same room as before, sharing the spacious bed. This time it was Grzoht's handsome face that smiled down at you. You turned your head and saw that Isabel's eyes had returned to the alien form they'd taken when you first met her.

"I was wondering when you'd make your farewell visit, Third Ensign. Katelyn Mills," he said, nodding to both of you. Izalbt got out of the bed to her feet, saluted her superior officer. You similarly arose, standing back so as not to intrude on protocol. Tina was clearly struggling a little as she readjusted to a physical body, but you ordered your virus to copy the muscle memory you had into her mind-chip, and she was soon standing next to you, waiting for a cue from your hosts.

"I noticed that you've already made some concessions to your host," Grzoht said.

"Only on a personal level, Sir," Izalbt clarified. "I have fully reserved all rights and privileges where they pertain to the performance of my official duties."

"If you hadn't, I'd have recalled you instantly," Grzoht reminded her.

"I know, Sir."

Grzoht turned to you. "It's a pleasure to see you again, Katelyn. And I suppose this is Tina?" he asked, extending a hand toward each of you in turn.

"It's a pleasure to meet you, Captain," Tina said, allowing Grzoht's hand to brush up against her nipple.

"Legally speaking, I already had," he pointed out.

"Katelyn and Isabel explained that," Tina agreed, nodding. Her voice changed very slightly when she spoke, but you knew that her arousal had just spiked, as it had when you first informed her that she was, technically, along with all other humans, nothing more than an extension of you.

Grzoht picked up on it as well. "I can't imagine many others will be so excited to learn of their status."

"Well, it's not like that matters much, does it?" Tina returned.

"True enough," Grzoht said. "I've had the molecular crafters prepare some Earth cuisine," he went on. "I thought a proper meal would be a suitable way to mark our new friendship and see you off."

"We'd be honoured," you said.

--

The meal was exquisite and substantial, but your body seemed to have an infinite appetite, as you never even felt slightly full as you ate course after course of dishes and delicacies that you'd never thought to experience again. Even the copious amounts of **** had no effect, though you suspected that was partly because of the link to your mind-chip.

"If you want to have this sort of thing again, the new spacecraft possess this functionality," Izalbt said. "Though you should probably give a little warning beforehand."

You nodded. "It'll just be as a special treat on occasion."

Tina leaned back as a small, hovering robot cleared away the dishes from the final course. "I know what I want for dessert," she said, her tone lascivious.

"You really are forward and uninhibited, aren't you?" Grzoht said, looking at you instead of Tina.

"As I said, we've been living in a porno for a year." But Grzoht's penis was every bit as erect as yours was.

This time there was no retiring to a bedroom; at a nod from you Grzoht simply picked Tina up bodily, laid her on the table, and began fucking her pussy. He similarly gave permission, and you began pounding his ass while Izalbt sat on Tina's face, forcing the other woman to eat her out.

The small orgy continued for quite some time, each of you getting fucked every which way--Izalbt even made strap-ons for herself and Tina to use--until even the manufactured bodies you were using, far more durable than ordinary human bodies, were tired and satiated from the sex.

Grzoht accompanied you back to the ward. "Serve us well, Third Ensign," he said.

"To my utmost, Sir," Izalbt said, saluting one last time.

"And I hope that I will be assigned to our next mission here, Katelyn," Grzoht continued, shaking first Tina's hand, then yours.

"I look forward to it," you said.

Moments later you were back in the simulation, exactly as you had been when you left.

A few days after that, the Hak'uys departed, leaving you only with Isabel and a vastly upgraded space station to show for it.