Cailin groaned in annoyance, it seemed she wouldn't be able to leave through the vent, not with how juicy her ass was, and this guard was intruding on her privacy too!
"Maybe I can solve one of my problems atleast.. ", she muttered, having an idea for the guard. She spread her legs open, inviting him and wiggling her juicy synth ass towards him.
"G- guys? When did we get a wall ass?", the guard asked around, although nobody was there to notice. He stared at Cailin's butt for a few seconds before silently closing the door and approaching her, "Guess it wouldn't hurt to do some testing.. Heheh.", he chuckled to himself, before undoing his pants.
Cailin's pussy licked itself, its goo seeming to form into a tongue. The guard failed to notice this, and slid his cock into her without hesitation, eliciting a soft moan from Cailin, "Fuck, that feels good~", she cooed quietly.
"Huh, that synth-voice actually sounded kinda sexy.. ", The guard thought aloud, groaning in pleasure as he pumped into Cailin's ass and spanked her plush synth-butt.
Cailin bit her lip in elatement, moist snatch stretching wider and wider, her gooey puss tongue wrapping around the gaurd's ass and drawing his hips and balls into her love-cave.
"Unf, god, this thing is really taking me deep!", the guard grunted, not noticing how he was subconsciously lifting his legs and sliding them into the robo-slime's snatch as he fucked her. Cailin's tongue helped him a long, curling around his legs and pulling them up, pushing them into her body and making her pant with feral desire. It wasn't long before the guard was sucked in all the way to his hips, and while shocked, he was still incredibly turned on as the 'wall ass' continued to pleasure him, sucking on his body hard, tongue wrapping around what hadn't entered her yet and pulling him in deeper.
Cailin's pussy lips puffed out and became actual lips, albiet tilted vertically. They were thick and juicy with slime, and they sucked down the guard hungrily, even seeming to moan as he pumped his cock inside of her, spraying her insides messily with his jizz.
"HHaA~", he cried out, body struggling and shaking in pleasure, "It feels so damn good!", He relaxed for a moment, enjoying how Cailin's pussy sucked softly on his body, slowly pulling him deeper and deeper, "Wait, is this thing, eating me?", he pushed his hands against her ass, straining, trying to push away, but Cailin simply took the moment to wrap her pussy tongue around his arms and pull him deeper. The guard could do nothing but struggle and look on in shock.
"Help! Somebody help!", he called, although seemingly, no one heard or cared. He kept struggling, bringing Cailin into her own orgasm as she exploded goo all over his body, slickening him with her warm ooze and making him easier to bring in.
"Aaah!~", Cailin screamed in joy, her legs bent back, strange robotic anatomy allowing her to twist them around without pain, and she shoved his head into herself with her feet. She set her legs back down, body relaxing. Her pussy lips sighed in contentment as her ass set to work digesting its meal, goo squeezing around the guard's body as he struggled. His form melted from the hot slime, being converted into even more goo for Cailin's synth ass. Soon he was nothing but lovely blue filling for her, and her plump ass was even plumper.