You get brutally buttfucked.

You scream into your gag as Arya inserts her entire length inside you roughly. It hurts you a lot. She does not start slow, choosing to instead mechanically fuck your ass with as much **** as possible.

There was so much pain that you don't even bother to scream anymore. You just whimper like a scared little dog. Soon enough though something strange happens. The pain has reduced drastically and your pleasure nerves are on fire. Feeling a little dizzy and lightheaded your whimpers soon turn into moans of pleasure.

"You like that don't you, ANSWER ME!"

"MMMMPPPPFFF...."

"Hehe...almost forgot..." she removes the gag from your mouth. "There you go my little pup. Now tell me, how does it feel."

You don't answer her question, choosing to look away in shame instead. She roughly grabs your lower jaw and makes you face her. She stops thrusting inside you and says "You better give me an answer right now and I just might go easy on you."

Your mind is at odds with your body. You don't want this to continue but your body betrays you every step of the way. You were painfully hard right now. What's more, is that your lower body is shuffling and jiggling around trying to get more of that lovely rapestick inside of you.

"Look at yourself, moving your body around like a whore. You know you want this. Just come out and say it!"

"It...it feels...good..."

"How good does it feel?"

"It feels really good."

"Do you want me to keep fucking you like the good little bitch puppy that you are?"

"Yess..."

"There we go. That wasn't so difficult, was it? Now, will you be a good bitch for me Da?"

"Yes."

"Will you try to escape if I let go of your bonds?"

"No."

"Are you sure about that?"

"Yes."

"Do you know what will happen if you break the rules?"

"You'll **** me again..."

"I'll **** you whenever I want. You're mine now. No. That's not what I'll do. What I'll do instead is beat you up so badly you won't even be able to get up. Do I make myself very clear?"

"Yes."

"Good. She proceeds to release your wrists first to test the waters. You don't react at all, choosing to be a meek spectator instead. She watches you for a moment and then pulls up and onto her crotch. You naturally grab hold of her shoulders for support. She roughly grabs your face and makes you look into her eyes. Every time you try to look away she forces you to look back at her. It feels weirdly intimate and very sinister at the very same time. She was showing you just how much you meant to her in her own weird psychotic way.

She then releases your ankles from the bedpost and as soon as both of your legs are freed, you wrap them around her waist.

Arya was a little bit surprised by that and was fully expecting you to retaliate instead.

"I'm pleased by your obedience Da! You're such a good little puppy, aren't you! Who's a good boy! Who's your sister's good boy!" she says while she gives you gentle scritches on your head.

"I am. I am!" you say happily. The world suddenly felt more colorful and alive to you. It was so bright, it was almost dazzling! And Arya seemed to be at the center of it all. She looked like the most bright and wonderful person to you in the entire world.

You eagerly start bouncing in her lap like a puppy. The pain from her insertion was completely nullified and all that remained was pure, unadulterated pleasure.

"Oooh. Somebody is happy about this! I'm so glad that you have accepted your situation. You belong to me. You belong under me. ONLY ME! I will protect you from everyone, even our own mother! Do you understand me?!"

"Yeeessss!!!" you say in ecstasy. Nothing Arya ever said could ever be wrong. Who needed Riya anyway when you had someone like your sister to protect you and fuck your ass on demand! It was perfect in every way.

Arya grabs you by your butt and lifts you up. She then stands up and gets off the bed and on to the floor. She carries you over to her large mirror that covered her almirah.

"Look at you Da! You're such a good little pup with your tongue sticking out like that! You'll always forever and ever be mine won't you?" she asks and kisses and licks your neck.

You giggle like a little girl when she does that. "Yes yes yes YESSS!!! I'll always be yours forever and ever!" You scream out loud. That was all Arya ever wanted to hear from.

She rewards you by immediately fucking your butt with brutal speed, lifting and dropping you down on her huge length. Your body is like a rag doll in her capable hands. You can't even hold on to her shoulders any more from the intense pleasure you were receiving. But it doesn't matter.

Arya is holding you very close to her own body. You can feel her breasts through her shirt squish against your own chest. She was looking at you very possessively but you were in a world of your own.

Everything felt like rainbows and sunshine wherever you looked. Your little sister's cock sawing in and out of you with brutal tenacity felt absolutely divine. You don't even realize that ever since Arya started fucking your ass, you had been cumming non-stop from your little dick and now you were just shooting blanks.

Arya finally reaches her limit and cums deep inside you. Her cock pulses strongly and dumps nearly a liter of baby batter, making your belly inflate visibly by a small amount.

You were completely out of your mind at this point, remembering only bits and pieces. You were just a plaything for your little sister to use. Over the course of the entire day, you get brutally buttfucked in various positions. You find yourself on the ground with your butt in the air, then you find yourself on all fours on the bed, then you remember being fucked against the wall, it was all a blur. The last thing you remember was wrapping your legs around Arya weakly as she kisses you and lets out another torrent of cum inside your already bloated belly.

"....aww...you look so pregnant! I wish you could give me lots and lots of babies!" you hear Arya say in the distance as you finally pass out.