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You're dragged over to Catherine's workbench, and laid down on the back of your head. She then drops your entire torso on the area below you, and connects both ends of your neck. The canister wired up to the base of your neck is inserted into your torso. You don't feel anything until Cathy removes your breast plate, and starts soldering wires.

As she starts fusing the first wire, you can feel your entire upper torso, with the exception of your boobs, jolt into existence. You give out a short, electronic yelp, as she does so. Your torso continues to flicker in and out of existence, feeling pleasure like a thousand soft hands were gently caressing every inch of your flesh, every time it did so.

"Nghr...! Erk...! Aahhhaiaiaiia-a-a-A-A!"

When the wire is finally secure, the pleasure slowly starts to fade. You'd normally be panting heavily at this point, but you have no lungs to speak of. Instead, you simply emit quieting whimpers of pleasure that fade into nothing.

"Please..." You beg. "Couldn't you just turn me off while you did this?"

Catherine just shakes her head and smiles.

"And miss out on all this lovely research? No way! I've got theories to prove about what transplanted brains feel during mechanization. And so far, you've been proving all of them right! Now, let's connect your fluid tubes..."

She digs around inside your chest. It feels extremely weird having a pair of feminine hands dig around inside your hallow body. She digs her hand down into your crotch, and pulls forward a small clear tube. She connects it with the canister she inserted earlier, and it snaps in with a click. Clear fluid runs down the tube, and into the darkness of your lower abdomen.

"Now..." Catherine states. "If my calculations are correct, you should ejaculate rather quickly, as this part involves the most erotic pleasure you can experience..."

"No! Please reconsider! Not in front of-AAAAAAAAAAAAAAA"

A long, loud electronic tone emits from your mouth as Catherine simply lightly touches the second wire with the tip of her soldering iron. Your eyes dart back and forth at high speed, and your mind temporarily goes blank. For a split second, your vaginal area, ass excluded, came into being. Instantly, it was if you were cumming. It was if your entire frontside had been dipped in pool of liquid euphoria, and that entire area, sectioned off by a thin crease in your abdomen, was experiencing more pleasure than a human could ever feel. It wasn't just your prosthetic vagina, which would have come if it had been wet already, but your rubbery skin as well felt like it was being fucked.

"Mmmm... Yes, that's exactly the kind of reaction I was expecting." Catherine muses. "You see, when your pleasure sensors come online, they're at maximum levels, no matter the situation. They'll quickly drop afterwards though, and you will feel like a regular human would within seconds. Now... Let's see if that fluid tube of yours is working..."

Catherine taps the iron on the bare wire, and your pussy flickers in and out of existence again. It's like an electric shock courses through that entire area. Your mind goes haywire from the insane sensation, your eyes vibrate, and your pussy twitches. Ten seconds after Catherine started fusing the wire, you feel a warm rush at the bottom of your body, and you spray your juices all over the table. However, unlike humans, your pleasure doesn't lessen there. You keep on spurting out your hot, sticky spray until you run dry. Even then, your body still attempts to cum, your pleasure sensors artificially forced to their maximum.

Finally, after two minutes of mindless sexual pleasure, your wires are connected. The pleasure fades, and your spasms stop.

"Run dry, eh?" Catherine asks. "It's to be expected. On automatic mode, not even the most determined of girls can resist spraying their load. At least, that's what my research says..."

"Fuck... You..." you manage to say. Your eye twitches, and your mind feels like it's been hit in the head with a frying pan.

"Subject is still disagreeable. Also to be expected. Anyways, please wait a second before we move on to your rear. I have an idea I'd like to try out."

Catherine leaves you alone for a second and walks on over to the pedestal with Miku's head. You can't see what's going on, but you can hear Miku's voice.

"What, is it MY turn already?!" Miku states rather rudely. "Wait, what are you doing? Hey, why are you touching that... Oh god... Is that my... Oh, GOD! That's sick! You're sick! That's SO wrong! You fucking sicko, what the hell are you thinking in that fucked-up head of yours!? Oh... Oh no..."

Catherine walks back over to you, holding a beaker full of a clearish fluid in her hands. Your eyes widen as far as your limitations let you.

"You... You didn't just..."

Catherine grins.

"Well, how else am I supposed to test out the pleasure sensors in your behind? You need to have something to eject..."

She opens up your fluid canister and pours the clear liquid into a reservoir. You listen to it trickle into the stainless steel interior, and your eyes start the shudder.

"I think I'm gonna be sick..." You groan.

"Now, now... I told you, that doesn't happen with robots. Though, if we ever find a client that's into that sort of thing, I'm sure we can make some arrangements."

Catherine closes the canister again and pulls up the third wire. You try and brace yourself, but it's no use. Within seconds, you're feeling unbearable bliss in your ass, and just moments later, you shamefully cum Miku's vaginal fluids from your robotic cunt.

"Forgive...Me..." You manage to sputter before breaking into a lusty scream and emptying your canister of Miku's love nectar.

The same thing happens again. By the time your soldering is finished, Miku has recharged, and you're refilled with her fluid. As the breasts cannot be present during the soldering process, you simply feel a strange, hovering bliss in your chest that never goes away. You simply continue to cum and attempt to cum, even after the wire is successfully connected.

In the midst of your artificial orgasm, Catherine talks to you once more, her voice raised so that you could hear her over the sound of your own moans.

"Sorry, until your breasts are inserted, you're just going to feel endless pleasure. But I need to do that last, so it will be a while. I need to connect your arms, your legs, your other internal parts... You're probably going to be like this for the next 45 minutes. A regular human would pass out three minutes in, but according to my calculations, you can't. Of course, I could have connected your breast sensor AFTER your arms and legs, but then I would miss out on seeing what elongated pleasure does to a subject! According to my theories, you should be fine, but it's always fun to find out, right? Perhaps you'll go into a coma! Or maybe it will be fatal! Can you imagine? You'd literally sex yourself to death! What a discovery THAT would be!"

But despite your wishes, you didn't fall into a coma. Catherine's predictions were right. You kept on feeling the exact same levels of pleasure for fourty-five minutes straight. It never faded, and you never got used to it, thanks to your body. It felt just as pleasurable in the last minute as it did the first.

As your pure-white, jiggling breasts were inserted into the socket in your chest, you felt them snap into existence, a surge of pleasure course throughout your entire body, and you gave a final twitch of pleasure. You whimpered softly. You were not tired. You were not exhausted. You felt just as refreshed as ever, and if you had more fluid in you, you'd be ready to go again.

You close your eyes and cry softly to yourself. You don't appear to be able to move your limbs just yet, so Catherine picks you up and places you against the wall. She cleans of the workbench and goes to grab Miku. Miku puts up a verbal fight, but unfortunately for her, that doesn't have any effect on Catherine. Her torso is placed on the workbench, and you spend the next hour or so listening to her screams of pleasure, and being sprayed on your head with your own cum, removed from your body by the easy-access panel on your back.

Finally however, Miku's violation comes to an end, and she's placed limply next to your body while Catherine leaves to go get some dinner. For the next hour, you sit there, side by side, as both of you try to come to terms with your existence as sex machines.