Lisa

Content with the fact that you have a willing helper, you start to figure out your next move. It is quite easy for you to pick who... Lisa, your youngest step sister, the little goth bitch. She had always pissed you off, acting all defiant and doing stuff to intentionally annoy others. You lay back in Laura's bed, Laura sitting up and begins to throat yoru cock, and begin to talk aloud. "It has to be Lisa, I am tired of that bitchy little defiant streak in her... what do you think?" Laura says something with your cock in her mouth but it can't be distinguished. "Sis, you know it is impolite to talk with your mouth full" you say. She just nods then. You pull your cock out and say to her, "We need to run an errand.." She strokes your shaft and says "ok lil bro" You get dressed and head to the local adult shop to purchase a few things, using Dr. Ashtu's credit card of course. After a couple hours you return home with your cohort in crime, carrying a large bag of goodies.
Lisa's room was in the basement of the house, she was moved down there owing to her habit of playing her music too loud.
Later in the evening you and Laura sneak down into the basement and edge your way towards where she laying on her bed. You motion to Laura and she quickly pins Lisa down on the bed, holding her arms with one hand, covering her mouth with the other. At that moment you were very happy that Laura had decent upper body strength. You make you way towards her stereo and turn the speakers towards the stairs, turning on whatever depressing metal band who was "in" at the moment's CD on. Walking back over to the girls you pull out a Z.O. container and take it out. You lean over and kiss Laura and Lisa's eyes widen before you place the small wormlike creature against Lisa's ear, watching it vanish inside of her. "You will obey my orders and Laura's as well. You cannot resist nor attempt to injure either of us. You may however retain control of your thoughts and ability to voice them. First order, do not move.." You motion for Laura to slide off of her and she does so. Lisa immediately yells "Fuck you! You are both freaks! I am outta---" her eyes widen as she realizes that she cannot move.
"Laura... what do we do with slaves who scream such horrible things at their masters?" you ask. Laura grins and slaps Lisa across the cheek then says "well they must be trained of course!" Laura grabs Lisa by the hair and pulls her to her feet. "Bend over you little bitch" she commands. Lisa attempts to object but her body moves anyways. "Bro, would you like to break her?" Laura asks in a sweet tone. You grin, loving that Laura is almost as sadistic as you are. "Sure... " you respond as you pull her pants and panties down. "Did you know little sister..." you glide a finger between Lisa's pussy lips, continuing "Normally when people act defiant like you have been acting, it usually means that they seeking for someone or someones to dominate them?" Lisa begins to say something but you plant a hard spank across her ass. "Turn around and face Laura." You grin and continue "Laura, Lisa would like to show you how much she wants to serve you..." Laura smiles and wriggles on the bed, hooking her fingers under the waist band of jogging pants and pulls them and her panties off, spreading her legs open before saying "You little bitch, I think it is about time you apologize for all the problems you have caused... Lick it NOW!" she says. Lisa in an instant dives face first into Laura's pussy, using her tongue to explore her inner walls thoroughly. Laura moans softly and you say "Big sis... I believe it is time to use a few of our purchases" she nods.
You head up to grab the bag, bumping into your step mother on the way back down. She had tanned skin due to her background (lebanese), wearing a small little blue silk teddy. Her full supple breasts were accentuated by her outfit. She jumped a bit and turned around, noticing your hardness she stammered before saying, "J-John, could you umm.. please go tell Lisa to turn her music down a bit?" You knew she noticed your cock, thinking to yourself "Take a good look you dumb whore, next time you see this, it will be fucking your throat." You smile your kind smile "Sure thing Elysha.. umm sorry, mom." You excuse yourself and head downstairs, after locking the basement door behind you.
Running into her made you even more eager to continue. Setting the bag down you grin, seeing Laura start to buck up against Lisa's face, you could tell she was cumming. You wait for Laura to finish before snapping your fingers, gesturing for Lisa to come to you. She does, still a bit bewildered by what just happened, you reach into the sack and pull out an ass plug and the highest power vibrator you could find. "****, take off all your clothes and show me your body." She stands and starts to object before you move behind her and slap her ass hard. "I didn't ask for you to speak..." you say as she undresses. She had a nice form. Her body was alot like Laura's save for her breasts were large C's. Laura walks over and joins you as you reach into the sack of goodies and pull out an assplug and a large red rubber dildo. You toss them to her and command "Insert the ass plug, and fuck yourself with the dildo. But you cannot physical climax until I say so.." Lisa instantly grabs the plug and inserts it, crying out as she does so then grabs the dildo and slowly begins to fuck herself...
You walk over and lay down on Lisa's bed and pulls your pants off, "Lisa sit in that chair and watch all of this.." you command, pointing at a chair she had at her desk. She does as you order and then without even prompting her, Laura walks over and straddles you, "Lil bro... I need you... I want to fuck your cock so badly. Lets show our **** what pleasure she may obtain..." Without saying anything, she positions herself over your cock and grinds down on you, moaning wildly she commands "****, lay down next to us and watch how his cock works in and out of me. And while you are doing that, you need to fuck yourself harder.." Lisa walks over and lays down beside you, moving the dildo faster and faster as Laura bucks wildly against your hardness. You reach over and slap one of her tits, she lets out a little moan and you say, "Faster your filthy ****..." You pull Laura close and kiss her, noticing that Lisa is now moaning wildly.. Laura looks at her and laughs "You want to cum so badly, tell me Lisa... Why does your mind resist when your body is being so honest? You want him to fuck you?" She lengthens her movements against you "You want this big dick to pleasure you dont you?" Laura reaches over and twists one of Lisa's nipples strongly. Lisa bucks and moans wildly before Laura says, "You want to cum? Then beg him and me... Accept that we own your tight little ass... We may even let you join in our games from now on..." Lisa's eyes convey that she has been broken, and soon she whispers, "P-Please mistress... may I feel Master's cock deep within me? I beg of you... let the Master enter me... I need it.." You kiss Laura knowing that you have just decimated Lisa's resistances. Laura pulls off of you and you look at Lisa, "Well? Fuck me you little slut!" Lisa removes the dildo and eagerly hops onto you, grinding hard against you, moving like a wild animal, moaning "Master.. Please let me cum... I will do whatever Master asks of me... Please master!"
You laugh and slap her ass hard, causing her to tighten... "Cum you stupid slut" you command. Lisa cries out "Yes master, I am your and mistress' stupid slut!" clenches up and shakes violently as she cums... Falling limp onto your body. Laura looks at you with contentment as you have tamed Lisa... "Well dearest big sister... all that remains is for us to break Jessica..." Laura nods and slides into the bed with you and Lisa.