Chastity Curse: Sister's Power

Sam woke up with another painfully stiff erection and aching balls, even as his bladder protested at how long he had chosen to sleep in. He winced as he made his way to the bathroom, where he had to dig his fingernails into his thigh to distract his raging boner enough for it to go down. Between that and the sharp pressure to urinate, he was valiantly able to overpower his cock's stubbornness, but it was a struggle.

Only when it was fully wilted was he finally able to touch himself in order to aim his cock to pee. It was still a dodgy move. He had to touch as gently as possible and not think about how mother fucking badly he needed to rub one out—

Shit! Halfway through his stream, his inability to not think about masturbating caused his hands to be pushed away from his cock. The movement made his penis jiggle and drop to a lower angle, causing him to splash along the rim of the toilet.

Unable to stop the stream, he had to quickly adjust his stance, squatting and turning his hips at an angle, but the damage was done. As soon as he was done peeing, he yanked his boxers back up and hastily grabbed some toilet paper to clean up his mess. If his mother or sister found even a single errant drop, he was going to be denied another week! Even just thinking about the problem made his cock threaten to swell again, now that his morning business was done.

He grit his teeth and forced himself to focus on cleaning the toilet. He went back over it again, just to be sure, and thought hard about comic books and video game. The kind he hadn't been forced to throw out just to give his cock a break!

Finally satisfied he had cleaned his mess, he stood, flushed the toilet, and adjusted his boxers to give his aching balls and tentatively soft cock a little more space. After washing his hands, he splashed some cold water on his face and took a long, calming breath. Okay. He was good. He was fine. He had everything under con—

And then his sister walked into the bathroom.

Completely fucking nude.

He tried to look away, but a glance was all it took. With her full perky breasts, her runway model legs, her flowing raven hair and piercing blue eyes, the twenty year old was without a doubt the hottest girl he had ever seen. If it wasn't for his constant blue balls, the fact that she was his sister would have normally ruined that for him, however.

Normally.

Maybe.

Mentally, he still felt that instinctive repulsion, and as she came into the room, baring everything to him, he whirled around, turning his back to her and squeezing his eyes shut. But his body had seen all it needed to; to his shame, his cock immediately started to go hard, tenting his boxers. He tried to adjust his tee-shirt to cover the growing tent, but it wasn't quite long enough. Given how he was standing, she had a perfect view of his profile through the mirror anyway.

"Morning, bro," she said. He could hear the shit-eating grin on her face.

"Cindy!" he hissed. "Get out of here! I'm still using the bathroom!"

"You're taking forever in here, and I gotta take a shower," she said. "So clear out." She snickered. "Or stay and watch. I don't mind."

Sam's hands shook as he balled them into fists. He squeezed his eyes tighter and grit his teeth. "I don't want to see that!" he hissed. And yet, his cock was throbbing at the idea!

His sister noticed it as well. She silently slid right up behind him and leaned close to his ear. In a sultry voice she'd used to drive a dozen other boys crazy, she whispered. "Liar."

Sam let out a gasp as her breath tickled him, and her voice made his cock jump! He leaped away from her, only to run smack into the wall.

Cindy burst out laughed as he stumbled back, forced to open his eyes. She put her hands up and caught him by the back. "Jesus, careful, bro." She reached down and pat his hip, just a little too closely to his aching cock. "You could have put a hole in the wall!"

Sam whirled and looked up at her, fists clenched, only for his seething anger to turn into a comical, bug-eyed look of shock. She was a full head and shoulders taller than him, and he was now just inches from her. He got a face full of the most perfect breasts he had ever seen! His cock jerked in his boxers, and he couldn't help but let out a tiny whimper as the ache in his balls surged!

Cindy just grinned down at her poor, pathetic, blue balled little brother. "If you don't want to watch me shower, maybe you want to try stealing my panties again while I'm preoccupied? I won't tell Mom this time. It can be our little secret."

"NO!" yelled Sam, his voice a much higher pitch than he intended. "Move! Just let me out of here!"

Cindy smiled broadly, put her hands on her hips, and spread her legs to match her shoulders. The tall, statuesque young woman practically filled the narrow walk between the tub and the sink counter, trapping her helpless brother between her and the back wall.

Even without the Chastity Curse making it impossible for a man to lay hands on a woman without her permission, it was debatable if Sam could have forced his way past her. He was short, skinny as a bean pole, and didn't bother to regularly exercise. Despite being eighteen, he could have passed for a junior high student. Cindy, on the other hand, was perfectly toned and fit, from years of jogging and aerobics. Even if she gave him permission to come at her with both fists swinging, it was obvious to both of them who would win in a physical fight.

Ah, but physical fighting was for brutes. Her real power, her most devastating way to torment her little brother, was to simply bare herself before him. She wanted to laugh out loud at how easy it was. Instead, she maintained that confident smirk that better drove home just who had the all the cards in this little conflict. The Chastity Curse made it easier to exploit, but she had always had this innate feminine power over him.

Sam started to sweat as he couldn't help but stare at his supermodel sister. His fists uncurled into trembling hands, and his cock pulsed hotly inside his boxers. Precum was beginning to seep from the tip, causing a wet dot to form and slowly spread.

Cindy pointed at his crotch. "Goodness, you might need a new pair of panties after all," she said. "You're about to make a mess in yours."

She saw his cock clench. Her little brother looked like he was about to cry and jizz in his underpants at the same time. He was so aroused, his balls so blue, so completely unable to relieve himself in any way, that just the sight of her had him on a hair trigger! Seeing a boy so completely sexually devastated by her caused her pussy to moisten.

"It's such a pity Mom won't give you permission anymore," Cindy continued, crossing her arms and pushing up her breasts slightly. "You really shouldn't have kept pestering her every day for so long. She warned you."

Sam's lower lip trembled, completely entranced by his sister's gorgeous tits. "I-I-I n-needed..." he swallowed hard and couldn't finish the sentence.

Cindy took a step closer to him. Sam, with the last bit of resistance he had, stepped back. She took another step closer, and he took another back. Another step. Another. And then his back was against the wall. And she stepped closer. He cringed back, but he could not look away, and he whimpered as his cock clenched hard in his shorts. The precum stain grew bigger.

"Yes, I know," she said. "You boys are all just so needy." She was close enough now that if the Curse wasn't preventing him, Sam could have easily reached out and cupped the breasts he was so entranced by. She stopped a foot short of actually pressing up against him, but she now had him effectively pinned to the wall. His whole body shook. He managed to tear his eyes away from her tits and look her in the eyes.

Once again, she had to force herself not to burst out laughing at the sheer, painful desperation on his face. But she managed to maintain that confident smirk, looking down at him as though he was nothing more than a little mouse, and she was the cat coyly pondering what to do with its prey.

Her pussy tingled at the sight of him. He had always been a total pain in the ass as a little brother brother. Annoying when they were kids, obnoxious all through their teen years, and an outright pervert in the last couple years before the Curse hit. She could remember entire weekends he'd spent jerking off in his room, stinking of semen whenever he hurried to the bathroom and back. She could remember the times she'd caught him staring at her tits, and of course, the time he'd left his door open, and she saw one of her used panties wadded up on his desk.

As far as she was concerned, this was karma. Even though just a few months ago the idea of baring herself before her brother would have been utterly repulsive, the Chastity Curse had changed things. She could now turn all his disgusting lewdness against him, and he couldn't do a thing to stop her. All she had to do was be near him, and his eyes and his cock would betray him. It was the perfect revenge.

And it made her so fucking wet.

"Cindy... please..." his eyes were moistening now. He was actually on the verge of crying.

She wanted to see those tears. She let one arm drift down over her stomach. She let out a soft moan, half-closed her eyes, and tilted her head back erotically. She watched through a half-lidded view as his eyes bugged out comically once again, catching the movement of her hand, and following it down. He trembled and his jaw dropped. She paused briefly, hovering her fingers right over her hard clitoris, drawing out the moment. He was actually holding his breath.

Then, she touched herself and let out a soft sigh. Her poor, powerless little brother let out a shaking breath and made a pitiful little whimper as he was forced to watch his gorgeous sister play with herself. Forced to see her do something, such a simple, wonderful, primal thing, that was completely and utterly denied to him.

She let out a moan of pleasure. She used her other hand to clutch at her breasts as she rubbed her clitoris in slow, delicious circles. It did feel good, very fucking good, but she was playing up the performance a bit. She mimicked the porn star moans that she knew was her brother's only experience with how women sounded in bed. Cindy didn't usually start vocalizing her pleasure until she neared climax, and her natural moans were deeper and more sultry. But her faked sounds had a devastating effect on the helpless teenager before her.

Sam could have closed his eyes. He could have turned around and punched the wall and bit his cheeks until the pain finally overcame his arousal. But he couldn't tear himself away. He was too enraptured. His sister was too beautiful, too powerful. He had never seen a woman masturbate in real life before, and in his terrible blue ball state, it was overwhelming him!

His cock was so hard it hurt, his balls felt like they were on fire, all from witnessing this gorgeous, sexy young woman play with herself, like he could only desperately dream of doing. His cock clenched and clenched in his shorts, precum leaking steadily. It was clear that, were it not for the Chastity Curse preventing him from reaching orgasm, he would be filling his underpants with cum, without even touching at all! Weeks of blue balls had made him such a hair trigger, he was riding the edge just from the sheer arousal of watching her!

The realization drove Cindy into an even higher state of arousal! She was torturing his cock, grinding him against the edge, without even touching him! The pleasure bloomed in her core, a surge of intense sexual heat! She shifted her fingers from her clit, driving three digits deep inside herself. Her moans shifted from the porn-star acting to the genuine lustful cooing of an approaching climax. She clutched one breast tightly with her other hand, and curled forward as her body clenched in pleasure.

Sam cried out, cock clenching hard, as his impossibly hot sister pressed herself against him, leaning her head against the wall and passionately crying out right into his ear! She came hard, bucking her body against his, and for a few perilous moments, his cloth-covered cock head rubbed against her thigh. He let out another cry as his body shuddered in a failed attempt to climax.

She held herself that way for a few more moments, rubbing herself slowly as she calmed down. Then she pushed herself off the wall and stood, smiling triumphantly down at her devastated brother. He was actually crying now, tears of frustration rolling down his cheeks.

In the four months since the Chastity Curse had appeared, he had been completely unable to convince any of the girls he knew to help him out. No girl at his school or in the neighborhood was interested in helping the socially awkward dork, who looked like he'd barely cleared puberty, get his rocks off. He didn't dare ask any of his teachers or any of the older women in the neighborhood for help, fearing their husbands would probably punch his lights out for it. The one time he'd begged the school nurse out of desperation, she'd laughed in his face, said that contrary to rumors, she was not the school cum dump, and got him put in a week's detention for sexual harassment.

He'd been left with only his mother and sister, the two women he least wanted to ever get help from, but who were the most likely to help him if only out of a sense of familial obligation. And in just one month, their prudish mother had gotten so sick his begging for masturbation, that she cut him off completely. She figured that maybe his blue balls would get so bad, he'd actually be motivated enough to try and get a girlfriend to help him out.

He never managed it. And thus, that the last person even willing to acknowledge his terrible male needs was his sister, the girl he'd spent most of their childhood being a huge pain in the ass to. And for three straight months, she had made sure every day to remind him of that fact.

Cindy admired her handy work, looking down at the trembling, broken boy. The precum stain on his boxers was huge. She could see the plum-purple head of his desperate, untouched organ straining against the now translucent wet material.

"Cindy... please..." he whined, like a petulant child being denied candy. "I'll do whatever you want, just please, please let me!"

"Don't get greedy now, little brother," she chided, crossing her arms to push her breasts up again. "I've told you time and again, absolutely perfect behavior for a solid month, and I might consider allowing you a nice, long milking."

"No!" he sobbed. "A real one! I need a real one! I need it now! It's been three months!"

She sighed and shook her head like a disappointed mother. "And for that petulant little outburst, it'll be four."

He bawled, but she didn't show a hint of sympathy. She watched him cry as his cock continued to throb. Even through his tears, he still could not stop himself from scoping out her nude body, no matter how much it made his cock ache.

Finally, she tired of the game; the stickiness of her own fluids drying on her thighs was making her antsy to get cleaned up. "Alright, get out of here," she said, stepping aside. With one final look at her body, Sam ran full tilt out of the bathroom and into the sanctuary of his bedroom, slamming the door behind him.

When he was gone, she finally broke the façade and burst out laughing. Her pussy still tingled with arousal, and as she showered, she rubbed herself to another delicious orgasm. She made sure to cry out loud enough for her little brother to hear.

END