>>17297854"Haroboooo~" Roboco goes as she approaches you, sauntering slowly as you hear the pistons gently go off in her legs. Weird, normally you wouldn't even be hearing any of her internal mechanisms, considering how advanced and high-spec she was. Was she doing this on purpose?
You shift slightly in your seat, trying to move your wrists, only for them to clang against the metal binding restraints.
"Hehe, I must thank you once more for volunteering for this experiment." She says in her whispery and sultry voice. True enough you volunteered for her "experiment", but did it really needed the restraints?
"I'm sorry about having you restrained, but I do need to get the most accurate data for my new equipment, so be a good little Robosa, OK?" She tells you with a small giggle. She then elegantly twirls around, revealing her new "equipment" to you, to which your eyes widen in response. It was a new pair of sleek robotic legs, mainly black with red highlights that ran down its length, ending in those strange raptor-like digits on her feet. But that wasn't what interested you. It was her butt and thighs that magnetized your eyes, which was not only shaped and sculpted like it was a real woman's, but it moved and jiggled as if it were made of blood and flesh. The glistening sheen of the material it was made of also helped in exaggerating those life-like movements, and you feel your pants grow tighter in response.
"Do you like it?" She giggles once more as approaches you in reverse, before parking herself on your thighs. You let out a pleasured groan as you feel her butt dock itself against your groin. The sensation was like nothing you've felt before. The material of her butt, polymer or metal or something, rubbed smoothly against your pants, and the curvature of it was so perfect it might as well be a Fibonacci sequence in how it was able to smoothly rub itself, much to your pleasured suffering. But even more than that, her already perfect ass was able to squeeze, twitch and mold itself to your ever growing erection, as if it had actual muscles within them. How the fuck did technology reach this level?
"Hehe, you really seem to be enjoying this. Just don't forget this is an experiment, so I need to observe every one of your reactions," she growls sultrily, and presses down her ass even further before her butt cheeks suddenly clamp upon your cock, sandwiching it perfectly.
"Now let's get to the real fun part," she smiles lecherously, and you hear the whining of her gears and pistons go off as she moves her butt up and down, all while your cloth covered cock was still sandwiched between those polymer butt cheeks. It sent your brain into overdrive as it tries to keep up with all the electric bolts that shoots up your spine every time her butt slams against your groin.
"Are you gonna cum? Are you gonna cum from my high-spec ass?" She teases as she picks up the pace. You could only moan out in response as your core tightens and your toes curl as you feel the semen builds up to a tipping point within you.
"Go ahead, cum, my cute little Robosa. Cum as you call out my name!" She orders you, and your body obeys.
"Roboco... Roboco... Roboco!!!!" You moan out as you let loose the built up seed within you, hips raised as you spurt inside of your pants. You see the stain on your crotch grow as you let out an unhealthy amount of semen, all thanks to this high-spec robot assjob. Once you had finished, your hips crash back into the chair, and Roboco's vice grip clamp of an ass finally lets you go. She turns to you and looks at you with those glowing yellow eyes of hers before smiling.
"Looks like that was a successful experiment." She whispers as she kisses you on the lips. Technology truly was amazing, you thought to yourself.
