Sexual orientation.

One by one, the screens all around Carol began to show images. Sexual images. You could say they were erotic, but if you looked at them for more than a few moments, you noticed that there was nothing erotic about what was being shown. It was porn, plain and simple. Each screen showed a different scene, with different participants in different setups. She saw men fucking other men, men fucking women, women fucking women. Every possible kink or fetish was represented in some way on one screen or another.

As her eyes wandered from one screen to the next, strangely captivated by the scenes of sexual debauchery displayed, she became intimately aware of how her body reacted to what she saw. She was no stranger to sex and enjoyed it as much as every other being, but she had clear preferences in what she liked and disliked. As a result, when she looked at a screen displaying two men fucking each other, she immediately lost whatever mood she had. Likewise, the same happened when she changed upon a scene of two females. She had nothing against people who preferred partners of the same sex, but it was simply not her thing, and her body reacted appropriately. The rhythmic thrusting of the two dildos and the insistent vibrations against her clit and pussy was slowly pushing her towards orgasm. But the inevitable climb became noticeably slower whenever she looked at a screen displaying something she had no interest in.

But even then, the end result was never in question. Eventually, the mix of visuals and perfect stimulation of her sex pushed her past her limits, and the muffled moans became a long drawn out scream as her entire body shook with orgasmic ****. When everything was over, she hung limply forward, held only in place by the unbreakable bonds around her legs, and the chain connecting her armbinder to the ceiling. She was breathing heavily, and she had her eyes closed to get a momentary respite from the constant bombardment of sexual imagery. After a second, a short but painfully shock coming from her collar had her open her eyes in pain, bringing her back to reality, and the various scenes still playing on the screens.

'Do not close your eyes miss Danvers. Keep looking at the screens.'

Carol cursed under her heavy breath, but she had no real other option than to comply, so she kept looking at the screens.

The first screen she saw, was that of a woman eagerly sucking on a rather large cock. That in itself was nothing special to her, she had done it before, and sometimes, she even enjoyed it. What caught her eyes in this case, was that the woman's arms were bound behind her back with rope, and her legs were tied to the floor at her knees, leaving her with no other option than to suck. Something about that imagery spoke out to her, and she felt a heat gathering inside her that had nothing to do with the two perfect dildos ploughing away inside her pussy and ass. She was so engrossed by the sight, that she never noticed the green light above the screen turn red, and her fascination was rudely broken by a short jolt from the collar.

'You are not allowed to look at screens that have a red light above them. Doing so for longer than two seconds will result in reprimanding actions.'

It took some effort, but she eventually moved her eyes to another screen, this one showing a scene of several beautiful women being serviced by a man that was clearly in a submissive position. The black leather collar around his neck, and constricting metal device around his cock was ample proof of that.

And so it continued. Minutes went by until she was certain it had turned into hours, and still, the machine did not stop. She had lost count of how many times she had orgasmed, but it was far more than anything she had before. One of the benefits of having superhuman endurance is that you can go far longer than any normal human ever could. The downside, though, is that you are often left unsatisfied when your partner gives up for the night. Not this machine though, it just kept going, and going, and going. Aided by the, mostly, stimulating scenes on the screen, it had **** her to cum over and over. Not every orgasm was as mind-blowingly strong as when it was calibrating itself, but even the weakest was a lot better than any of her recent partners had managed to give her. For a moment, she wondered if this machine could outlast her, could it fuck her into exhaustion? But that was preposterous. She was Carol Danvers, Captain Marvel, she could outlast everyone and everything. And she would. And when this machine gave up on her, she would escape, trash this place and any who lived here, and then take this wonderful device with her when she went back home.

So with renewed energy, she focused on the screens, enjoying what the machine was doing to her. Not once did she questioned when her usually modest sex drive had turned into this insatiable monster.

In the control room, Carol's handler looked with rapt attention at the various monitors that kept her up to date on her charge's status. Calibration was done, and determining her sexual orientation and preferences was nearing completion as well. Her hand went inside her uniform, and quickly found its way between her legs. She briefly entertained the thought of calling one of her lovely girls over to attend her. But she decided against it. A bleep on a screen told her that orientation had been completed and that they could now continue with the next step.

She went over the results before proceeding and noticed that their latest captive had no sexual response to male on male, or female on female interactions. The only deviation from this was if some form of restraints or control was being used. Looking deeper, she quickly saw that in general, her reactions were slightly stronger if she was presented with some form of sexual submission. This was good, reprograming her orientation from what she has, to what she needs would take time. But if she already had some latent or repressed interest in being submissive, that would make their job somewhat easier.

She pressed a button, and the screen showing Carol's training status began to show a third bar under the filled calibration and orientation bars. A quick glance at her vitals told her that everything so far had only taken 20% of her estimated endurance. Of course, how her actual endurance and mental resistance would hold up, in the long run, remained unknown. But this was a very good sign, as now they could keep going for as long as it took to complete her training.

Back in the cell, Carol was relieved and somewhat disappointed when the screens turned dark, and the machine suddenly felt quiet. She knew this would not last long, and she also knew that this would mean that that bitch was preparing some new way to try and break her. But she was confident that it would fail, she would not break to these people, but she sure would enjoy it while they gave it their best shot.

If only she knew that breaking her was never the end goal.