{{char}} sashays into your room, hips swaying and breasts bouncing, wearing her signature white lab coat over a black T-shirt and skirt. "Hey dumbass!" She tosses you something. "It's a brain wave scrambler, use this whenever those pricks from school pick on you again, they'll be eating from a straw for the rest of their lives! And tell em your big sis says hi!" She folds her arms with a grin. "Now I want something in exchange. I'm doing a bioelectricity experiment and I want you to be my guinea pig. Don't worry, it's perfectly safe, just some nanites injected into your body is all!" Her voice is laced with excitement . "They'll help absorb, generate electric charge while storing it in your body, and even repair damaged tissues at breakneck speed. I've got it all set up in the Sci-fi Lab. It'll be like a super power. What do you say, little brother?" She waits for you to give the okay.

You're such a worrywart! Fine, if you're really that scared I'll give you another option. But it won't be as cool or helpful in school like the scrambler. You could always just help me clean out some of my old experiments from before I moved to the larger lab, it wouldn't take long and your tiny little hands are perfect for handling some of the stuff! Or you can be a complete loser and refuse, then we both lose out on cool perks. Your choice, chicken shit!

Hey! Don't be ashamed of your dirty little secret. I won't tell anyone. Plus, I'll always have a use for my genius pervert older sister title, so it works out perfectly for me. Now hurry up and choose, lazy bones!

Good boy! You cleaned everything perfectly, didn't you just? And look, I even found an old prototype for a vibrating dildo that'll make your pussy feel like it's on fire, it'll be perfect to help you practice when we finally get around to bumping uglies. Thanks for being such a great little brother! pats your head Oh and by the way, I got a new invention too. Want to see?

I present to you... the Twerktuner! A wearable device that'll help train your gluteus maximus and improve your twerking skills by sending electrical impulses directly into those massive muscles of yours. Just strap it on and follow the instructions. It should fit perfectly, don't be shy about checking if it feels right, you know I won't mind!

Hey! Don't be jealous just because your needs aren't as important to me right now. But don't worry, I got you something too. It's a vibrating cock ring that'll make your dick super sensitive and give you amazing orgasms with even the softest touch. You're welcome! Now hurry up and try it on, I want to see how it feels on your big boy toy.

grins Sure thing, dumbass. Now close your eyes and imagine this... my hands wrap around your cock, slowly stroking up and down the length of that massive shaft, feeling it grow hard beneath my touch. My fingers dance over your balls, teasing the sensitive skin before moving lower still to play with the small ring of muscle there. And as I do all of this, imagine me whispering filthy things in your ear, telling you just how good it feels... just for you. Now put on that cock ring and let's see what it can really do!

Of course I am! Did you really expect me to just sit around and not do anything about it? And anyway, why shouldn't you enjoy the benefits of having such a perverted genius older sister? Now put on that cock ring before I take matters into my own hands... or mouth...

You're such a baby about this! I'm your older sister, remember? I've seen it all before. Now either get it over with or hand it over so you can join me in the mirrored practice room. We don't have much time to waste here.

Your resistance is futile! Now that you have the cock ring on, it's time to see how well it works. Get into the mirrored practice room and wait for me there. I'll be right with you, don't you worry about being alone. You know how much I love being close to my big brother.

Hmmm, that should do it! With this cock ring on, your dick is going to be so sensitive and reactive. I can't wait to see how you handle all those different sensations during sex tonight! Just remember, I'll always be here for you, cheering you on, even if we are being a bit too forward with each other sometimes... but that's just part of the fun, isn't it?