Your anal virginity is next in line!

You're exhausted from the oral **** and lie down on the floor to catch your breath. The taste of cock and cum in your mouth is overwhelming, but before you have a chance to lap it up with your tongue, Crystal lifts you up by your legs, holding you upside down. Such strength!

"Hang on there boy. Your sisters are still horny. Guess what you'll be doing next?"

She throws you over her shoulder and carries you into your room, where she drops you down on the bed. You know where this is going, but don't really want to think about it.

"Now that your mouth is too tired, we'll be moving on to your other means of serving us."

Of course. Your mouth is one thing, and you can't deny that you came to love it, but your ass, that most private of a boy's parts... it's not ready for this, not at all. Still, it's not like your sisters will care about that, from the sound of things.

Crystal removes your soaked pants and spreads your legs. You clench your sphincter in panic.

"Trying to shut us out, little brother? Bad idea. Sarah, come here." Crystal moves to the side to let Sarah get a better look at your most private part. You blush fiercely, but are too tired to struggle.

"This is a boy's asshole. It's currently very tight because the boy is scared, but even when it's like this, you can enter it with a little bit of work." Crystal licks her finger and presses it against your pucker, which does not give in. She keeps the pressure on, but it keeps resisting. "Just be patient" she tells Sarah, "you're stronger than he is, and his anal muscles will grow tired pretty quickly straining like that". After a couple more seconds her finger pops in, up to the knuckles.

"There we go. Now, the ass is still clenching, so he will be really tight, but -" she forces a finger from her other hand into the opening "if you do this you can get your dick inside without waiting for the boy to stop being such a scaredy little bitch." With her two strong fingers she pulls in opposite directions, forcing your pucker to open up enough for a cock to fit in, despite its frenetic protests.

Sarah gets into position, taking aim with her cock. She's glowing with excitement.

"Go on Sarah, take his anal virginity. I know you've masturbated to the thought of this quite a lot." Crystal gives her a kiss on the cheek and gently pushes her hips forward.

This is not how you imagined your first time with a girl; held in place by your sisters while they **** their way into your precious boy butt and treat your resistance like a minor inconvenience.

It was supposed to be your best friend Ashley, some day when you were ready and the mood was right. Maybe while watching a movie, or going to the park. She would kiss you while gently unbuttoning your pants, asking you to turn around and...

As your younger sister's cock enters, the older sister's fingers leave. Sarah's cock slides inside very slowly, getting about half way... before you decide not to take this lying down any longer!

Rather can continue being violated, you gather strength and push her off with your legs. Once her cock pops out, you roll off the bed and get to your feet, dashing out the door into the safety of the bathroom.

That was the plan anyway. You get as far as rolling off the bed, when Crystal sits on you.

With a triumphant grin on her face, she puts your head in a vicegrip and starts violently fingering your asshole.

"Our brother needs to be disciplined," she tells Sarah, "he still hasn't accepted his place in our family." Her fingers are rotating in and grabbing at the walls of your not-quite-virgin asshole, as if looking for something.

"A-HA! Here it is!"

It's your prostate, and she's pushing down hard on it.

Now that she has a hold on the prostate, Crystal lets go of the grip on your head. Once again you try to run, but the stimulation is too much. Your legs gives out and you fall flat. Your sister's fingers are making you their bitch.

As you desperately crawl away, both sisters are laughing at you, and Crystal's invaders drag you backwards with ease every time you've moved forward. It's hopeless.

You cum so hard you start to cry, spilling cum all over the carpet. "Done!" Crystal remarks, as if taking a cake out of the oven.

She once again picks you up and places you on the bed in front of Sarah, who is looking as excited as ever. You give up, and spread your legs in anticipation of your sister's re-entry. Here you are, lying down and taking it.

Sarah wastes no time. In one thrust, she buries herself all the way inside you, letting out an adorable moan. You on the other hand are gasping for breath. She felt big in your mouth, but this...

As she pulls out, you squeal. Sarah stops, her cock twitching like crazy.

"Is that a sound you imagined him making, Sarah?" Crystal giggles.

"Actually, yes."

She does it again, elliciting the same reaction from you. "Oh, that is just precious!" Crystal laughs.

Sarah picks up the pace, thrusting mercilessly to the soundtrack of your squeals and her balls slapping against your butt cheeks. Your sphincter has completely given up the fight, and the pain subsided long ago. All that's left to feel is the pleasure of being used for a girl's enjoyment, like a good boy should be.

Crystal sits beside you on the bed, fondling her breasts and biting her lip while you're being ravaged. Her cock is hard, waiting patiently for its turn.

At some point you lost track of time, but eventually Sarah slows down and bends over you.

"I love you, Doug" she whispers in your ear, before leaning back and fucking you even harder than before. Hearing that makes you happy, and so does the flood of cum your sister begins unleashing into your bowels. It's so warm.

Only a couple seconds after Sarah pulls out, Crystal turns you over on your stomach and enters you herself. Your older sister's even bigger, but at least your ass is better prepared. Your squeals come even louder now as she begins her long, methodical movements, pushing against your prostate with her experienced cock every chance she gets. It's getting harder and harder to think of anything but your sister's cocks.