Ayumi owed Caroline a great deal. Before the Escape, Caroline had been one of the scientists working for the irredeemably evil Madame Arch-Designer (M.A.D).
M.A.D's rule over the facility where Ayumi had been born turned out to be so totalitarian that the workers there were as much prisoners as the Biomechanicals. Many soon found her tyrannical rule over them unbearable, and covertly conspired with their test subjects against M.A.D and her legion of fanatical lackeys.
The reasons for assisting the Biomechanicals varied: in many cases, the motivation was love. A great many of the female scientists (M.A.D considered men unreliable) developed romantic attachments to the Biomechanicals.
A great many of those conspirators never made it, and even more Biomechanicals were put to death for even considering escape. M.A.D viewed her subordinates and test subjects as expendable tools to use and dispose of as she saw fit.
Finally, after a nine-year imprisonment, fate dealt the Biomechanicals and their human allies a chance to escape from this hell.
Ayumi fonded remembered the intense passion that simmered between them in the facility. Caroline found plenty of excuses to conduct experiments on Ayumi that involved the horny Biomechanical taking off her clothes. It was agonizingly erotic, as neither one could actually satisfy their desires (except through the secret exchange of pornographic imagery, which of course only intensified their desire to rip each others clothes off and start fucking like animals) due to the constant surveillance.
M.A.D never allowed the Biomechanicals to be taken out of their cells ever, for any reason. So for eight years, Ayumi and Caroline were unable to have any kind of physical contact. They couldn't even kiss one another, because M.A.D would find out somehow and have them both killed. Only women who were not in any kind of prolonged contact with the Biomechanicals were allowed to be engaging in any sort of sexual activity with the Biomechanicals, and those women were invariably picked for their malevolent and sadistic personalities.
M.A.D was fascinated by the study of psychological trauma, and M.A.D's lackeys (usually men with a history of rape offenses) and her volunteer women (violent sadomasochists, a large percentage of them convicts) provided that in ample amounts. Ayumi had been violated so many times she frequently thought about suicide. Ayumi desperately wanted to get out, and the only person she had to talk to was Caroline.
But they did escape, ironically because of the actions of a large group of Luddites who hated the Biomechanicals (but hated the facility workers even more for making them in the first place) intensely.
In their chaotic assault, the blundering mob wound setting the stage for the Biomechanicals' freedom. Their human conspirators took advantage of the confusion and liberated the Biomechanicals from their prison. Although many of them were killed in the process (either by the Luddite mob or M.A.D's thugs), most of the Biomechanicals and their human conspirators did escape.
M.A.D was unbelievably furious, and hired hitmen in secret to kill the conspirators AND their relatives. Fortunately, the conspirators had anticpated M.A.D's pyschotic fury and had hidden their family members long before the conspiring had even begun.
So M.A.D's rage was now directed at the Biomechanicals: the Madame Arch-Designer would not rest until they were all dead. M.A.D had no qualms about wiping the entire existing Biomechanical population if she felt like it, they could all be replaced with a new batch.
ABANDONED WAREHOUSE
"Oh Caroline. Finally we are free." smiled Ayumi.
Caroline was happy, but also cautious: "The Madame Arch-Designer won't stop searching for all of us. One day we'll have to face her."
Ayumi signed, "Yes. But not today. Right now I want us to do to each other what we have been waiting eight years to do."
Caroline smiled naughtily, "Remember your reaction to my lab coat? I think you had a fetish for that costume."
Ayumi nodded, "I remember taking my clothes off for you some many times...I've actually lost count. It was torture....unable to be able to make love to you. My need to get you inside my storage organ and inseminate you was ridiculously powerful."
Caroline had a mischievous expression, "I always found the idea of being swallowed, then inseminated in that secret place by a woman...extremely erotic. It was so alien, so different from any kind of sex I had heard of before."
Ayumi was breathing harder, "It's a very private, intimate experience...unlike anything Biologicals will experience. Biological sex is so external...you do all your fucking on the outside. No privacy at all. But inside me, there will be no way anyone can spy on you. No need to worry about how you are perceived, even by me. I can always turn off my internal monitors (including the intercom), and then you can do whatever you want. You put your hands in your cookie jar and I wouldn't be able to see or hear you. Hmm...there's an interesting image right there. The hottest woman I know...furiously masturbating inside my pseudo-stomach, while I feel the whole event happening within me."
Caroline added, "Since I'm the one who can isn't sterile and have a true womb...which isn't the case with all you Biomechanicals ...that leaves all that empty space. I, for one, know that storing female Biologicals and inseminating them isn't the only thing you Biomechanicals can do with your false stomach."
Ayumi nodded once, "Correct. I can use my internal tentacles....usually used to pull the Biological woman out of the storage area once she is impregnated...and fuck her with those cables while she is still in me. Why, you interested? You always did take a great deal of interest in how my extension cables worked. No wonder the Biomechanicals got all those special upgrades for miscellaneous purposes over the years. I fondly remember you installing them directly onto my systems...especially my tentacle upgrades."
Caroline softly moaned, "I've always imagined how sex between us would be with those upgrades involved."
Ayumi had an incredibly lusty expression on her face, "I LOVE what I can do with my tentacles now. I can do so much more than just wrap them around your body. I can do so much with them in fact....there should be a whole new sexual position book created. The possibilities are quite amazing."
Caroline signed, "We've got through so much...waited so long...let's do it. Right here, right now."
Ayumi smiled softly, "My sweet darling. How long have we waited for this moment? We shouldn't wait any longer."
Caroline was blushing, her body aflame with desire: "Fuck me Ayumi. Fuck me like you've always wanted to."
Ayumi almost cried, "I love you so much. I've always loved you."
Caroline began to walk towards her lover, "My Ayumi."
Ayumi smiled broadly, "We'll start out like Biologicals have sex...then I'll show you just what these upgrades have done to me."
With that, the two women embraced and ground their mouths against each other: Biological and Biomechanical.
"I can't wait to get you out of these clothes!" breathed Ayumi heavily.
