Scene

"I want to fuck my little brother," Tor growls out, and you immediately slip into your 'little_sibling_submissive' mode, pre-programmed. Of course, you had plenty of other planned personalities, from being a standard dominant into bondage all the way to the obscure like wanting to be a paid whore whose biggest fetish is making people cry out the lyrics to Daft Punk songs. People are into some weird stuff.

"B-but, Tor, that's not really appropriate!" you cry out, eyes bit and innocent as they back you into the wall. "What if mom or dad find out?"

"This is just what good siblings do, Julien," they say, pressing a knee between your legs. You were sent wearing plain blue jeans, sneakers, and a white t-shirt, but they didn't seem to mind, rubbing against your artificially lubricated cunt. "They take care of their brother by making his little cock hard as he sucks theirs."

You take a few deep breaths, purposefully looking pensive before nodding. "If you say so, big sib... Can you teach me how?" They grin widely, rubbing their thumb over your chin. Your skin was so well-made that it was practically real, soft and just a little too smooth to be human.

"You know I will." Tor stepped back, pointing at the ground with a vicious grin over glossed lips. "Get on your knees and take care of your big sibling. You'll make them feel really good, right?"

"Of course! I'd do anything for you," you promise, falling to your knees. They had left you barely enough room to do this, making your face mere centimeters from their bulge. You placed your hands on their thighs, acting as though you hadn't the slightest clue as to what you were supposed to be doing.

They undid their belt and the button of their jeans alongside unzipping them, pushing down the cloth of their panties to free their cock. They were nicely thick but a rather average length, and you let out a staged gasp as you saw it, the tip nearly touching your nose. They weren't entirely hard yet.

"I-is that supposed to go in my mouth? That's... so big," you murmured, reaching your left hand up to gently stroke it. You knew to play to a male's ego at most points, complimenting their cock or saying that they're doing much better at fucking you than whatever partner you've been assigned to have in the scene. They were easy to please.

"Oh, it'll be going somewhere else soon, too," they purred, reaching down and guiding the tip of their dick to your lips. You flicked your tongue out, getting some of their precum on it and making a soft whimper.

"It tastes so good," you said despite not being able to taste much of anything. "Can I... suck on it?"

"You're supposed to." You gently wrapped your lips around the tip, letting your eyes roll back and moaning directly into their cock. They shuddered as you ran your tongue around the very head of their dick, swiping up as much pre as you possibly could.

Your mouth provided more than enough lubrication for any object to be inserted with ease, but you also knew that foreplay had to be one of the most important parts of sex. They definitely seemed to like your attention to detail, tangling a hand in your hair and pushing you forward further.

You had pulled up a random number generation for what path of **** you'd go down and deigned for being the secret slut, not hesitating as you pressed forward and swallowed their cock even more. This caught them by surprise and they seemed to latch onto your hook.

"Ho-how many people do you do this for, huh?" they gasped out, feeling your inner workings squeeze at them like no human other could. You could easily tell that they were already coming close to orgasm, which would probably ruin the scene, but something inside of you told you to hurry up and get everything over with.

Something else inside of you tried to say to ignore that part.