Help Cindi with her homework and let her help you with yours.

You gather a courage you never dreamed possible, you find Brad between period and ask syrupy sweet if you can spend the afternoon with Cindi. He seems more impressed than annoyed. "Well, well, well. This is some straight Pygmalion porno shit, but game respect game. I'm curious to see how you handle a girl like Cindie. You might wish you'd stuck with a softy like me."

You are **** on butterflies floating up from your stomach all afternoon. You can't believe you even considered this. Every step you take towards Cindi's house seems an impossible one. You know the route all too well, having taken it as the 'scenic route' home more times than you can count, even though it's a mile in the opposite direction, all for a fleeting glimpse of her through a window. Usually she was on her way to blow or bend over for one of your bullies, which up until this morning you always resented. Now, having enjoyed the taste of forbidden flesh yourself, you have to admit you can see the appeal.

Today you are searching for the most forbidden fruit of all, Cindi's ample apple bottom, ripe melons, and sticky sweet peach pie. It seems unlikely to say the least that you got further with her in one day sucking cocks in stockings and panties than a decade of sniffing after her. Then again, now that you know exactly how close she is to your sister, maybe you should have led with your feminine features sooner. By the time you finally arrive on her fearsome front door, you feel, if not confident, at least not entirely cowardly about ringing her doorbell.

It feels like an eternity before the door finally opens. You are surprised to see Emma answer the door. You had expected her to be here, of course, but you didn't expect to see her 'wearing' a series of leather straps cutting across her comely curves, accentuating her breasts, hips, legs, and shaved, sopping pussy with a collar reading '****' providing the most cover. "Oh my Gawd! Why didn't you tell me you were rad?" Before you can answer, Emma pulls you into a passionate kiss, her breasts crushing against your chest and her tongue sliding past your lips as you stumble into Cindi's house and close the door behind you before the whole neighborhood sees your incestuous embrace.

"Hey! You two can suck face at home! ****, get Ella 'dressed' and ready for tutoring. And neither of you are allowed to cum until I give permission." Cindi stands at the top of the stairs wearing a dominatrix mask that leaves her luscious lips exposed, a spiked and studded leather corset that gives her a waspish waist and pushes her beautiful breasts almost spilling out of the low cut top. She wears a strap on dildo as casually and confidently as a dude bro wearing a cap, and her thigh high leather boots look both frightening and extremely lickable. She looks like she is used to being obeyed, so when Emma breaks your kiss and turns and heads down to the basement, you follow obediently.

"So, lil' sis'sy, how long have you been sucking cock and wearing panties?" Emma asks like she just discovered you like the same indie-electro-post-pop-bubblegum-bluegrass band no one's ever heard of. You take a second to compose yourself, struggling to take in all this new information. First off, you apparently have a hankering hard on for your twin sister. You suppose if you are being honest with yourself, that isn't exactly breaking news, but you have lived steeped in denial and repression so long that obvious truths are suddenly shocking.

"I just started this morning. At first, I just wanted to get Brad to protect me, but then I had to prove I take it up the ass better than you and I kind of discovered I love sucking cock and being slutty and being bullied." That's the second thing you have been struggling to process. Emma looks almost as stunned as you are by your honesty, but you can't see the point in lying anymore when the whole school knows about your new rep.

You arrive in what can only be described as a sex dungeon in the basement. Rubber padding on the floors and wall, sex swings and stocks, toys and enough costumes and props to put a porn set to shame, and so many lights and cameras...and then it hits you that this IS a porn set and that in addition to being a bratty bully bitch to you and every other beta she meets, manipulates, or mangles, Emma is a subby slut **** to alpha girls like Cindi. That opens up a whole world of possibilities to you, especially once she starts to strip you naked.

"Oh Emm Gee! Ella! Did you really lose your virginity in my soiled panties?" Emma pulls you into a kiss that's forbidden in more ways than one. You know you should be getting ready, but as always, your slutty switch sister is dominating you. She pins your tongue down with hers and kneads wet whimpers from your ass. She breaks the kiss, biting and sucking your bottom lip before SMACKing your butt, asking, "And did you really claim you take it up the ass better than me?"

She is giving you her patented, 'prove it' look that she used to be able to get you to do anything with. You pout and pull painfully away, pointing upstairs to remind her of your orders. Emma, always the brat, coos, "Don't be such a stick in the mud! We can still obey Mistress and have fun! She said to get you ready, and I am certain she will want to fuck your ass with her strap on, so..." she walks over to a toy chest and pulls out the biggest, thickest double dildo you have ever seen, "we can use this to get your ass ready for her and prove who is a better butt slut at the same time. And as long as neither of us cum, we will be following the rules."

Emma always could find a loophole. Of course, it always seemed just small enough for her to slip through everytime you both got caught. You don't want to get on Cindi's bad side, at least not until you've seen more of her good side first, but the naughtiness of the proposal makes it tempting to your new perversely positive outlook.