You scramble to hide

"Hey guys, we're home!" Your parents voice echoes through the house.

You both jump out of your bed as you hurry to hide from your parents. Emily bolts to the door, but pauses, hearing footsteps ascending the stairs. She locks it and looks at you, panicked, as you try to clean up the mess of shopping bags and clothes strewn all over your floor. You motion for your closet door, as Emily gets into it, closing the door behind her, as you push the shopping bags under your bed, pulling your covers down to hide them peeking out below. Emily tosses you a shirt from the closet, as you take your pair of shorts, hanging from your gaming chair, and hurriedly puts your clothes on, not having time to take the lingerie off.

As you scan the room, looking for any signs of your tryst with your sister, you hear knocking. "John, are you in there? I wanna show you something." Its your dad. You take one last sweep of the room, not finding anything out of the ordinary, before opening the door, looking at him through the gap.

As you open the door, your dad invites himself into your room, talking excitedly. "You won't believe what I found at the store." he starts, as he starts going on about some new gadget he found. You barely listen to him, nodding robotically as he talks. You scan around the room, panicked, knowing your sister is naked and vulnerable behind the closet door. You see the edge of a shopping bag peek out from under the covers, as you make your way to your bed, sitting down on it and gently adjusting the cover. Your dad is to focused to even notice what you are doing. He isn't even noticing the small little bulging of you chest that the bra undeniably does, luckily hidden behind your baggy shirt.

Your dad can see that you are barely listening to him. "Something wrong John?" he asks. You gently cough, and lie down on your bed. "I don't know" you reply. "I don't feel too good today dad, I'm sorry. I was napping as you came home." you lie to him. "Oh I'm sorry. I'll leave you to yourself then" he replies. "I'll show you another time. Maybe Emily wants to see." he says, as he starts leaving your room, heading towards hers at the end of the hall. "Em isn't home." you lie. "I think she went out with Lindsay or something." You don't know if Emily has something in her room that she doesn't want her parents to see, but you figure it's best not risking it.

"Oh that's too bad." your dad says. "Well get some rest John, you look absolutely sweating." If your dad only knew. "Are you sure you don't have a fever? I'll call you when dinner is ready." He leaves your room, and as he descends the stairs, you lock the door after him. Your closet door then opens, silently, as Emily sneaks out of it.

"Holy. Fucking. Shit." she whispers. "That was way too close! Imagine if they were home 15 minutes earlier... " She pauses, and looks at you, smiling. "Thanks a ton John." she says, going in for a deep kiss, her tongue hunting yours as your mouths lock together. She quickly detaches from you, and pulls your shirt off from you, revealing your bra for her once again. She pulls you to your bed, and gently pushes you down on it, with her above you, still naked, her beautiful tits hovering above you, the key to your prison hanging between them. She pulls away from you with a wild look on your face. "I'm so fucking horny John. You have no idea." She isn't lying. In your weeks together, you have never seen her like this. It's something primal coming out of her, as she gets on her bed and gets on her knees in front of you, pulling your pants down, exposing your caged cock, framed by your crotchless lingerie. "Em, we can't..." you start.

"That's mistress to you and you know it." Emily interrupts. "And you don't get to tell me what to do. Now sit down and shut up!" You go silent, as she finishes untangling the pants from your legs, as she takes your swollen balls into her mouth. First one, then the other. The sensation overwhelms you, feeling her hungry tongue on them. You moan. "Shut the fuck up John!" she hisses, as you realize the noise you are making. You take a pillow and cover your mouth as she continues. She continues for several minutes, gently massaging and sucking on your nuts, as you suddenly feel a warmth envelop you.

Your sister has taken your little cage into your mouth. You can't feel much but her lips on your pelvis, and the warmth of her breath on what little exposed skin you have. She swirls the tongue around the plastic cage, and you have never wished for anything more than to be unlocked right now. She gently pulls away, licking the cum from the tip of your cage, and your hips buckle, overwhelmed with pleasure, as you feel her tongue gently touch the tip of your cock through the little hole at the front, as she licks up your leaking precum.

Your sister pulls away. You swear that if she kept this up for a few more minutes, she could have probably made you cum, through the cage. Maybe your sister knows it as well. You remove the pillow as you cool down, and your sister is on her knees, her face flushed as she looks at you. "I'm not leaving this room before I cum John." You don't dare to argue with her. You made her cum earlier, and you are sure you can do it again. You get off the bed, making it ready for her. "Not with your mouth John. Go get my dildo from my room" she whispers. "You know where it is."

You freeze. What did she just say? You stare at her confused. "Em.." You correct yourself. "Mistress we can't.. Mom and Dad are..." "Don't you dare disobey me one more time today John!" Emily hisses at you. You see pure lust in her eyes. "You are going to grab my dildo and fuck me with it, unless you wanna stay locked in that little cage of yours for an entire month." You are cooked. But you are too afraid of Emily going through with her threat. What other choice do you have?

You get up, and grab your pants to pull them on, as you start trying to unclasp your bra. Emily grabs your arm, smiling. "I didn't tell you to change John." she says. She digs out the dress, hurriedly thrown underneath your bed and hands it to you. You can wear this.