You do as she says

"So what will it be John, the dress or just your underwear?" Your sister looks at you with a devious smile. She's not really giving you a choice, and she is well aware of it. Maybe you could at least explain the dress to your parents if they caught you. You have no idea how you could explain the lingerie. Or the cage for that matter. You reluctantly accept the dress that she offers you, as you put it on. She squeezes your ass, as she pushes you towards your door. You stand with your ear next to it, listening for a while before carefully turning the lock. You sneak out of your room, as you see your destination right across the corridor. You take a few careful steps out, and stop just before the stairway down.

The stairway turns at a hard angle before descending, and you know there is no way that anyone can see you from downstairs, but your heart still race as you take careful strides towards your sisters room. As you make your way past it, you walk more rapidly, seeing her door left ajar at the end of the hallway. You gently open it, as it creaks. You curse silently, but there doesn't seem to be any response to the noise, as you quickly make your way to her bedside table, and pull out the top drawer.

Your sister seems to have been careless. The dildo sits outside of its usual black bag, on top of a silvered jewelry box. I guess she's confident enough her parents doesn't snoop through her stuff. You quickly grab the dildo, pondering if you should put it in it's black bag in case anyone spots you, but you realize that if you're spotted you're fucked either way, dildo in hand or not. You grab her toy as you make your way out of her room, closing the door as you leave, as it creaks once again.

"John, is that you?" your mother shouts from downstairs. You freeze. Why in God's name did you decide that you needed to close the door behind you. "I heard you were sick." she continues. "Do you want me to bring you some food and water?"
You keep walking towards the stairway, paranoid as you are, thinking that maybe it will sound less suspicious if your voice comes from a place closer to your room. "No Mom, I'm fine." you reply. "I just went to the bathroom, that's all. I'll come down for dinner later." You quickly make your way across the staircase, quickly, before she decides to go upstairs.

"Anyways, how long is it until dinner Mom?" you ask her. "I'm working on it, but I don't know. I'll let you know when its done!" she replies. "Fuck!" you mutter under your breath, as you rapidly make your way inside your room again, quicker now that you don't have to sneak. As you open the door, you are stunned by the sight of your sister face down on your bed, pushing her ass up, presenting it to you. Her wet cunt is glistening, and you can see that her thighs are getting drenched as well. You stand there, gazing at her for far too long, your cock aching in its prison, before you realize the situation you are in, as you hurry inside, and lock the door behind you.

You turn to your sister once again, marveling at the sight. You make your way over to her, as you get on you kneel down, eye level with her pussy. You get a good view of her asshole, as you stare at it, thinking about the fact that she's taken Eric up there before, and your cock pulsates once again at the thought. You lean in and start to kiss her thigh, tasting her juices. Your sister stops you. "We don't have time for foreplay John." she hisses. "Besides, I'm like a fountain here. Just fuck me with that thing." You obey her command as you take the dildo in your hand, and push it into her wet welcoming hole. Your sister pushes her head into your pillow, and moans like she was possessed. You stare mesmerized at her pussy, seeing the thick rod go into it, seeing how it opens up to its girth, hugging it tightly.

You feel like you are in overdrive. You try to listen to make sure your parents don't come up the stairs. You hear your sister moaning into your pillow. You see how her beautiful, wet, perfect pussy grips the dildo you push inside her. And you can feel your cock ache in its cage, as it does so often usually. Everything about you is on edge, all these different sights and sounds are overwhelming your mind, as you try to focus at your task at hand. You push the dildo in and out of your sister, as Emily quivers. You see her entire body shake as she welcomes the thick pink cock inside of her. It doesn't take more than a minute or two before she wheezes out between deep breaths. "Faster John. I'm so fucking horny. I can't take this. I'm cumming soon".

You do as she says as you grip the dildo firmly in your hand, increasing the speed of which you thrust it into her. It barely takes a minute as you see her entire body starts to convulse, as her pussy pulses on the dildo. You see Emily's toes start to curl as she climaxes on the silicone cock in your hand. She screams into the pillow, as you manage to bring her over the edge. You hope that the pillow was enough for your parents not to hear their daughter climax.

As your release the dildo from your sisters tight grip, she collapses on your bed, your sheets a wet sloppy mess. You lay down next to her, as she pulls you in for one sloppy, sweaty kiss. She pulls away and looks you into your eyes. "I've never came this hard in my life John." she says. "You awoke something in me." She smiles, giddily, as you smile back, gazing deep into your sisters warm eyes, proud that you managed to make her this happy. You are getting obsessed with her. You almost wanna say it, knowing you shouldn't but before you can even ponder if further, your sister interrupts your thoughts.

"I love you John."