Nod silently

Her venom evaporates immediately as you nod your consent. You feel the belt around your neck loosen and she slowly takes her body weight off you. Your groin and belly still ache from her kick, but you ignore it as you become acutely aware of a wet patch on your shirt where she was pressed against you. She slides her hand to your pants and slowly runs her hand along your bulge, but instead of continuing to apply the friction you are so **** for, she slides her hand into your pocket and extracts your phone. She pulls it up and starts typing.

-Mom, I'm heading out for the weekend with the guys. Back Sunday.-

She shows you the text and softly speaks, "That gives us all weekend to play, big brother. Now get up and turn around." You obey immediately, and the first thing she does is slip a blindfold over your eyes. "Oh no...now big brother won't be able to see little sisters little perky titties...poor big brother." She coos at you, pulling you gently to your knees and slipping something around your wrists. A scarf, maybe? It doesn't matter much as she pulls tight and your left wrist is quickly pulled back to right elbow, and your right wrist makes a similar journey. Some pulling motions and you soon can't move your arms at all.

"How long have you been perving on me, you fucking creep? I'm 18, shithead. Did you wait for my birthday before you decided to be fucking disgusting? You fucking deserve what's coming, you know that right?"

You hear her texting behind you, then nothing for several seconds. Your cock is trying to explode from under pants with nothing more than anticipation. Once more, her hand snakes to your pocket, and this time pulls out your car keys. Then you hear some papers being tossed on the bed. Her hands unclasp your belt, and your pants are brought down, then you're being pulled toward the bed and some more tugging before you realize she's used your belt to tie you like that. Standing next to your little sister's bed, you couldn't move as your raging hardon pointed on, inches away and unable to touch. You could tip forward onto the bed, but that wouldn't get you very far.

"Now, I've got to dash for a little while. I would try to remain quiet if I were you. Super quiet now, big brother. Cause if mom comes up here and sees you like this, you are so fucked. If you get too scared, call out for help. Maybe you can even explain what you're doing, and what all these pictures are. Should be fun to watch, big brother. If you're a good boy, then I'll see you when I get back."

You hear her walk out of the room, acutely aware that you could probably squirm out of this if you wanted. After several minutes, the fear subsided enough for your hardon to die down, and you tried to flex your arms, but she had those tied tight. You tried moving your legs, but the belt was fastened. Too low to get with your mouth, and too high for you to step out of. You tried leaning forward, but realized she must have looped your belt on her footboard. You were at least able to get your head down and remove your blindfold. You immediately realized how real her threat had been and froze, refusing to make a sound.

You stayed like that. You weren't sure how long you stayed, but your back ached and your shoulders were cramping. The door opened and your heart stopped in your chest, but it was your sister. A sigh of relief left you as you realized you relieved to be caught by your executioner. You couldn't help but chuckle at the irony. She smiled at you, but it was viscious.

"You really are a pervert, aren't you? You take that blindfold off, and now you're fucking trying to hump my pictures. You're disgusting." Her voice is low, but menacing.

"No, I swear." You whisper. "I just leaned down and I can't get back up like this." For whatever reason, this last shred of your morality is something you wish to preserve, like it would make up for creeping on your little sister. She sits down next to you. The ass on her simple jean shorts just inches from your nose.

"I'm your little sister. Your own darling baby sister. And you get hard for me. Can't you just admit how fucked up that is? You deserve to be executed, you fucking pervert. And in about half an hour, mom's going out. She still says she's going out 'with friends', but we all know she's staying with her boyfriend for the weekend. As far as she knows, you're out 'with friends', and I'm the only one here, just hanging out alone in my room. Except I'm the only one here who isn't a fucking liar. She's getting her pussy blown out like a ho. You're going to die by the little sister you've been perving to. And I'm going to find your body tomorrow morning. At least I never lied. Of course, I might have omitted a few details. And maybe I have a friend bringing your car back here tomorrow. And maybe I'm the one who killed you, so maybe I shouldn't be so judgy. Maybe we're all just a little fucked up. Here, let me give you a small apology for not being as understanding as I could have been."

She stands yo and steps toward the door, giving you a full view of her body. Short jean shorts you saw before, but the tube top left absolutely nothing to the imagination. Her perky breasts, the absolute most top grade B's you've ever seen, were clearly visible and outlined in that razor-thin shirt. She slid her hands over her shape, gently cupping them as her hands caressed first down, then up, then down again, making eye contact with you as she gripped the bottom of her shirt. Pulling up gently, her midrift became visible as the soft sound of the garage could be heard.

She stopped immediately. "Oh, too bad bitch brother. Looks like you're out of time. Let's get started."