You finally have everything you always wanted. You're not human anymore.
You rub your new body up and down. It's perfect, slender, and shiny, and it's all yours. You've got a small access panel in your lower back. It contains your SRPI port, some status lights, and your power and reset buttons, all locked up with a key hidden in a place only your girlfriend Liz knows about. Even you can't get in. You're designed this way so a stranger can't change your settings after they have been set and the panel has been locked back in place.
Everything about you is data now, your personality, your voice, your ability to feel pleasure or pain, it can all be modified. A piece of software that came with your instruction manuals allows you to switch between modes via an SRPI cable plugged in to the port behind your locked panel. You and Liz try out a few of the available modes. You came with the typical "maid" and "chef" modes, but Liz has something different in mind.
Liz has a firmware update for you that allows her to enable custom, more dangerous and fun modes than the ones that come pre-installed. You're assured that the update is perfectly safe, and you agree.
Early on in your relationship, Liz decided she was going to be in charge. Something in your rational mind told you that you didn't actually want that, but basically every other part of your body told you you did. That's when you discovered that you were submissive, and since then, she's been in charge of most of your life. The first time she took you out with a remote-control vibrator inside of you, you felt closer to her than you ever had before. You remember when she tattooed her name into the skin of your old body, before the switch, without telling you what she was writing. It was electrifying. But this is the most intimate thing she's ever done to you.
Liz gently lays you on your chest and asks you to stay perfectly still, even the smallest mistake could corrupt your firmware. You're not sure if you want to go through with this, but she insists, and with her behind the controls there isn't much you can do to stop her anyways. You feel your system temperature rise all over your body as your emotional response system kicks in. You're not sure you would ever stop her, no matter what she did.
You hear her tapping away at her computer, which is still tethered to your back. You feel a tingle running through your entire body. It feels like a mild electric shock. Suddenly your vision goes blank and you start to panic. She puts a comforting hand on your shoulder and tells you to stay calm. "Installing Custom Firmware" appears in your vision, hanging artificially in the air in front of you. Then, the rest of your vision goes out, and all you can see is the text hanging in front of the nothingness, with a small progress bar that inches along the bottom. This is all you can see for the next 20 minutes while all of your core programming is being rewritten. When the status bar reaches 100% your vision flashes red and you begin to feel weak.
Your vision clicks back on. You're in a different room, and it's almost 3 days later. It felt like no time had passed at all. Liz must have had you powered off that whole time. She enters the room with an excited smile on her face. She explains to you all of the new features and modes you have with the custom firmware that was installed.
Your favorite is called "sex bot" mode. This mode turns off your speakers and all your motor functions, but leaves you with pain and pleasure sensors, vision, hearing, and thought. Being used as a toy has become one of your favorite kinks, since Liz helped you discover your submissive side. You're excited and nervous to try this one out.
Letting go of your free will is a dream. All of your worries melt away whenever Liz puts you into this mode. Over the next few weeks, she enables it almost every day. Sometimes, she'll simply leave you for hours to relax, silent and motionless. Other times, she'll fuck you so hard that your frame begins to bend out of shape and your joints snap under the pressure. The best sex you ever had was when she left you in pieces until she got home from work the next evening to reassemble and repair you. Your logic board had glitched and you were in a foggy haze for about 24 hours before sex bot mode was disabled. Your orgasm processor was stuck in an active loop the entire time, leaving you unable to even think of anything other than the non-stop pleasure flooding what was left of your body.
Transferring your consciousness into a completely synthetic robot body wasn't cheap, and you had to finance your own body, a fact that makes you feel a little embarrassed about your choices. But Liz has a plan. Sex work has been illegal for years, but now that you're not a human anymore, the laws that govern humans don't necessarily apply to you. Liz assures you that she can't get in any legal trouble for whoring you out, and you can't get in any trouble for doing it. And after all, who doesn't want to fuck a robot?