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"Oh, God, yes, Kim, that feel so...aghh!"
Marc was startled as he recognized his sister's voice. But it sounded like it was coming from Kim's room. He'd been living with his sister, Lisa and her housemate, Kim for nearly two weeks. It had been uncomfortable and unpleasant from the start.
His mom, now on husband number five, had decided she and her new beau were going to get married the day after he graduated high school and started their honeymoon immediately. So instead of having one last summer with his high school friends, to lounge around and have fun, he was unceremoniously shipped off to where he would be attending college in the fall.
The house he was sharing with his sister and her housemate had been bequeathed to Marc and Lisa by his father who had been a senior professor at the college. It hadn't been Marc's first choice, nor Lisa's, for that matter. But surviving dependents received a substantial break on tuition and matriculation fees, and as their mom had failed to do much to provide for their education, their first choice of schools had been moot. In fact, Marc suspected that their so-called mother was happy to be rid of them both, she could spend more time doing what she did best. He wasn't sure what she did best, but she certainly wasn't mother of the year.
Marc was far from happy with the situation. He and Lisa had never gotten along as kids. As they had grown older they had fought constantly and with increasing viciousness, at least verbally. The last time one of their fights had turned physical, just before high school, Lisa had broken his nose. Marc lost it at that point, and had literally held her by the throat, several inches off the ground, and told her that if she ever hit him again he would break her neck.
Step-dad number two (or was it number three?) had been a former Marine, and had beaten Marc badly. Surprisingly, their mom had divorced the man over the incident. Marc suspected that she had merely been looking for an excuse, as she had taken up with her next husband before the divorce was finalized.
So here he was, fucked out of his post high school graduation, sharing his late father's house with his only sister whom he despised, with no friends, no job, no girlfriend, no nothing. The only bright spot in all this was Kim, the highly attractive Asian girl who was sharing the house with him and Lisa.
Kim was nearly the exact opposite of Lisa. Where his sister had continued to be catty, bitchy, and outright mean, Kim had done her best to make peace between the two siblings, giving him a kind word, even attempting to apologize for Lisa's behavior. Sometimes she would even reprimand Lisa when she became especially bitchy, reminding her that since he'd arrived, he'd done most of the chores, a fair bit of handyman work around the house, and done nothing to provoke his sister's periodic outbursts.
That Lisa would listen to Kim and back down attested to the depth of their friendship. Lisa and Kim were both on the college cheerleading squad. While Lisa had been somewhat wild during high school, Kim had managed to calm her down quite a bit. After she'd moved in, by all accounts, Lisa had quit her wild partying and buckled down on her academics. Without Kim, Marc doubted whether Lisa would have maintained the grades or appearance of 'moral turpitude' required to stay on the squad.
In fact, he had gotten into quite a row with his sister earlier. He'd spent the day doing yard work, mowing, edging, cleaning the pool, etc. Afterwards, he'd showered and grabbed a beer out of the fridge, not noticing it was the last one. Lisa had exploded. Kim had gotten between the two. After a tense dinner, Kim suggested Marc might meet up with a local cycling crew which made a practice of taking group bike rides in the cool of the night.
Marc loved cycling and readily agreed. Unfortunately, part of the ride was over some fairly rough road. He hadn't seen the pot hole that caused him to endo. He'd been able to roll out of the spill with only a few scrapes and bruises, but his front rim had been buckled. A couple of the other riders had stopped and helped him out. They had applied some basic fist aid, then stayed with him until someone came around with a pick-up truck to bring him home, several hours earlier than he'd planned.
All the lights at home were out, so Marc assumed, with more than a little relief, that the girls had gone to sleep. After depositing the remains of his wreaked bike in the garage, he let himself in as quietly as a cat burglar. Thus he heard the sound of his sister's voice clearly, along with assorted moans and soft cries. Padding softly through the house, he perceived that the sound was coming from Kim's room.
Her door was partially open, the warm flicker of candle light spilling into the hallway. He had to pass by to get to his own room. As he did, he couldn't help but glance in. What he saw astounded him.
Lisa was lying on her side, naked. Her hips were undulating against Kim, who was nearly nude, except for the strap-on she was wearing which was firmly embedded in Lisa's ass. One of Kim's hands was working a vibrator in and out of his sister's clean shaven pussy; the other was around Lisa's head holding it into a deep, passionate kiss. Both of his sister's hands were kneading her own sizable breasts, often pulling at her hardened nipples.
Marc had always known his sister was a hottie, in spite of the animosity between them. He had right after he'd hit puberty, inadvertently thought about her while he'd masturbated, but had always felt disgusted at himself afterwards. Once he started dating, and more importantly, having sex, that stopped and hadn't happened again.
However, with the tableau of these two erotic creatures before him, he was unable to control his reaction. Transfixed, he was couldn't tear his eyes away from the sight. His cock stiffened and was tenting his shorts.
The girls broke their passionate kiss. Lisa's eyes fluttered opened and locked on his. "MARC!" she screamed at the same instant he shouted, "Oh fuck! I'm so sorry, I didn't mean..."
Shocked back to awareness, he turned and ran into his room closing the door behind him. Marc collapsed onto his chair. He heard Lisa and Kim arguing loudly.
"Lisa, calm down. We should have made sure the door was closed. Marc is a good guy, I'm sure he didn't mean..."
"Fuck that, Kim. That little shithead was spying on us! I'm gonna break my foot off in his ass and if he so much as touches me, I'm gonna call the cops and have him thrown in jail!"
"No, Lisa, you will do no such thing." Kim's voice was calm as if she were scolding a insolent child.
"Really!?! Look here, Kim. I may like playing the sub for you in bed, but that fucker is gonna pay!"
Marc's ears perked up. Wait a minute, his sister, the queen bitch who'd tormented him as long as he could remember, was not only a lezzy, but also into bondage! Oh, this was too good!
Finally he had Lisa over a barrel. The college was very conservative and associated with a fundamentalist religion. If even a hint of what went on got to the administration, he could have her expelled! This was almost to good to be true. He could blackmail her into, into what? Being nice? Probably not. But at least he could use the leverage he had on her now to make her be civil, or at the very least, stop her from being a complete bitch.
Kim spoke again as if she'd been reading Marc's thoughts, "Lisa, remember where you are. If word of this gets out, we're both off the squad. More likely we'll be kicked out of school. I know your mom probably won't give a rats ass, other than having to find another school for you, but my folks will probably kill me and then disown me, in that order. I'm here on a scholarship. If I get expelled, I might not ever get another chance to go to college. Dammit, this isn't just about you!"
Shit! If he ratted out Lisa he was fucking over Kim as well, something he hadn't realized. While Marc would have gleefully raked his sister over the coals, he liked Kim a lot. Fucking her over to get at his sister wasn't something he was prepared to do. But neither of the girls knew that. If he played this right, he might still be able to get Lisa off his back without screwing over anybody.
He heard Kim talking again, right outside his door. From the sound of it, Kim was getting pissed off.
"Lisa, this is not negotiable. You get your ass back to your room, and I mean right now, or you and me are done. I love you, but I'm not going to let you sacrifice my future just because you insist on being a cast iron cunt to you're brother! He's been nothing but really nice since he arrived. And you've been nothing but a fucking bitch to him when he's around. I've just about had it. Try me if you think I'm fucking kidding!"
To his surprise, he heard Lisa agree meekly. A moment later, he heard a door open and close. Then there was a knock at his door.
"Marc, it's Kim. I really need to talk with you. Can I come in?"
Marc waited a moment, composing himself and making his face a neutral mask. "It's open," he said blandly.
Kim opened the door and stepped into his room dressed in a shear, thigh length robe of red silk. Marc was stripping off his clothes, revealing the minor injuries he'd sustained. The bruises were beginning to purple, but she couldn't help but notice that he was lean and muscular. His bright blue eyes seemed to burn into her. For a long moment, Kim stared at Marc, not sure how to begin.
It was Marc who finally broke the uneasy silence.
"So, you and my sister, huh. I never would have figured you two. I mean, no flannel, no mullets, I guess that would make y'all lipstick lesbians." He said matter-of-factly.
Kim regarded him for a moment and realized he was wearing only his underwear. The large bulge there made her swallow involuntarily. Lisa's kid brother was either stuffing socks into his undies or...
"Kim?"
She forced herself to look at his face.
"What did you want to talk about?"
"About Lisa and me, and what you're going to do about it."
"Well, I'm thinking about getting some payback on Lisa."
"Why? What is it between you two?"
