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Sibling Rivalry: A Twisted Obsession

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JT is 20 years old and is introverted due to his Older sister Iris a transgendered woman with a large girthy phallus. She has always hates JT but she also wants to have JT all to herself.

Chapter 4: Longest Night

The gray light of morning did nothing to soften the edges of the room. It seeped through the blinds, laying bars of pale illumination across the tangled sheets, across Iris’s sleeping back. JT was already awake. He had been for hours, watching the light change, feeling the unfamiliar weight of her beside him. Her breathing was deep, uneven. A whimper escaped her lips—a tiny, vulnerable sound that would have been unimaginable two days ago.

He moved. He didn’t wake her gently. His hand slid over her hip, rough and possessive, pulling her onto her back. She stirred, her eyes fluttering open, clouded with confusion and the residue of a brutal sleep. He saw the moment memory returned. A wince, a flicker of shame, then a blank submission that settled over her features like dust.

“JT…”

“Quiet.” He threw the covers off them both. The air was cool on their naked skin. He looked her over, a clinical assessment. The marks on her thighs, the faint bruises on her wrists. His work. A strange pride tightened in his chest, cold and sharp.

He pushed her legs apart. She let him, her body pliant. Her cock lay soft against her thigh. He took it in his hand, not gently, and began to stroke. She gasped, her hips giving a tiny, involuntary jerk.

“You don’t get to be soft,” he murmured, his thumb rubbing over the head, spreading the bead of moisture that already gathered there. “Not with me. You stay ready.”

He worked her with a ruthless, rhythmic efficiency. Within minutes she was fully hard, thick and hot in his grasp. Her breath came faster. She bit her lip, trying to stifle the sounds.

“Look at me,” he commanded.

Her eyes, wide and wet, locked onto his. He saw the conflict raging—humiliation, a deep-seated ache, and a hunger so profound it swallowed everything else. He sped up his hand, twisting on the upstroke, his grip tight.

“You’re gonna come,” he stated. It wasn’t a question.

“I… I can’t, it’s too soon, I’m too—” Her protest died in a sharp cry as he pinched the tip, just shy of pain.

“You come when I say. Now.”

Her body bowed, tensing. A ragged groan tore from her as the first pulse hit. Thick streaks of white shot over her stomach, onto his hand. He didn’t stop. He kept stroking, milking her through the climax, his hand moving relentlessly over her oversensitive flesh.

“Stop, please, it’s too much, it hurts—” she begged, tears leaking from the corners of her eyes, her hands fisting in the sheets.

“I didn’t say stop.” He leaned close, his voice a low growl in her ear. “You take it. You take everything I give you.” He continued, the motion now causing her to twitch and shudder with a painful sensitivity. A second, weaker orgasm was wrung from her, a pathetic dribble following the first. She sobbed openly, her body convulsing with the assault of sensation. Only when she went limp, her cries subsiding into hiccupping breaths, did he let go.

He looked at his hand, glistening with her release. He held it up to her face. “Clean it.”

She stared at his fingers, her expression shattered. Then, with a trembling sigh, she took his wrist and guided his fingers into her mouth. Her tongue, warm and wet, swirled around them, licking them clean. The subjugation was complete, a ritual of ownership. He pulled his fingers out with a soft pop.

“Get up. On your knees.”

She moved like an automaton, her limbs heavy with exhaustion. She knelt on the mattress facing him. He mirrored her, so they were kneeling chest to chest. The scent of sex and sleep was thick between them.

“You know what I want,” he said.

She nodded, a barely perceptible dip of her chin. She leaned forward, her mouth seeking his cock. At the same time, he dipped his head, taking her spent, softening length into his own mouth. The position was awkward, intimate, degrading. A mutual act of service that was entirely about his command.

He felt her mouth envelop him, hot and hesitant at first, then with a growing, desperate skill. She sucked him, her tongue working along the underside. He reciprocated, not to please her, but to dominate her even here. He licked and sucked her back to full hardness, his own arousal surging as he felt her tremble. The taste of her was bitter, salty, uniquely hers. He fucked her mouth with his tongue, and she did the same to him, a frantic, messy feedback loop.

He was the first to break. The tension coiled too tight. With a guttural groan, he came into her mouth, pulsing hot jets onto her tongue. He felt her swallow instinctively, greedily. The vibration of her moan around him triggered her own release. She came into his mouth, a weaker, saltier flow this time. He swallowed, forcing it down, a final act of consumptive control.

They parted, breathing heavily, strings of saliva and come connecting their mouths to each other’s flesh for a second before breaking. Her lips were swollen, her eyes glazed.

“Turn around,” he rasped, his voice hoarse. “On your hands and knees.”

She complied, presenting herself to him. He positioned himself behind her. He was hard again, relentlessly so. He spat into his hand, slicking himself, then guided his cock to her other entrance, the tight, clenched pucker of her ass.

She froze. “JT… no. Not there. Please.”

“Yes there.” He pushed the head against her. “This is mine now, too. All of you is mine.”

He applied pressure, steady, inexorable. It was a brutal, burning stretch. She cried out, a raw sound of protest and pain, her knuckles white on the sheets. He pushed in, inch by torturous inch, until he was fully seated, buried in a hot, vice-like clutch that made him see stars. She was shaking, weeping openly, her face pressed into the mattress.

He gave her no time to adjust. He set a punishing pace, each thrust a slow, deliberate invasion. The pain was evident in every choked gasp she made, but beneath it, he could feel a different tension coiling in her body. A shameful, treacherous arousal. He reached around, taking her cock in his hand again, stroking her in time with his thrusts.

“You love this, you fucking degenerate,” he grunted, slamming into her. “You love your brother taking your ass.”

“I hate it,” she sobbed, but her hips were pushing back against him, and her cock was leaking steadily into his fist.

“Liar.” He fucked her harder, the slap of skin echoing in the small room. The dual sensations—the intense, painful tightness of her ass and the slick friction of his hand—drove him to the edge blindingly fast. “You’re gonna come again. From this. From me fucking your ass.”

He felt her spasm around him, a series of convulsive clenches as she fell over the edge, her release spilling hot over his fingers. The violent squeezing of her orgasm tipped him over. He drove in one last time, deep, and emptied himself into her, a hot flood that felt infinite.

He collapsed over her back, spent, his weight driving her into the mattress. They stayed like that, joined, for a long time. His breath slowly returned to normal. Hers was a series of shaky, wet inhalations.

When he finally pulled out, she made a small, pained sound. He rolled onto his back, staring at the ceiling. He felt emptied, hollowed out, a vessel for something dark and spent.

The silence stretched. Then, he spoke, his voice flat.

“Clean me up.”

She moved slowly, painfully. She retrieved a towel from the floor, dampened it in the glass of water on his nightstand. She knelt beside him and began to wipe his stomach, his thighs, his softening cock. Her touch was tender, almost reverent. When she was done, she hesitated.

“Go on,” he said, not looking at her.

She lowered her head between his legs. Her tongue, soft and careful, licked the remnants of their coupling from his skin. She cleaned him with her mouth, a silent, servile penance. When she finished, she remained there, her head resting on his thigh, her breath warm on his skin.

He didn’t push her away. He lifted a hand and rested it on her head, his fingers tangling in her messy hair. A gesture that could be mistaken for affection, but was simply another form of possession.

Outside, a Sunday morning unfolded. The distant sound of a church bell. A car door slamming. Normal life, carrying on just beyond the walls of this muted, ruined room.

Inside, there was only this: the smell of sex and salt, the weight of her head on his leg, the quiet horror of a new equilibrium settling over them like a shroud. He had wanted to break free from her influence. He had succeeded in the most catastrophic way possible. He had not escaped her.

He had conquered her. And in doing so, had chained them both to something from which there might be no return. The light through the blinds grew stronger, but it brought no warmth. It only illuminated the wreckage.

It only illuminated the wreckage. The silence between them stretched, thin and sharp as a wire. JT finally moved, the sheets whispering as he swung his legs off the bed.

“Get up,” he said, his voice flat. “You smell like me. We’re cleaning up.”

Iris pushed herself up, movements stiff and pained. She followed him, a pale shadow, down the short hall to the bathroom. The fluorescent light buzzed to life, bleaching everything a sickly white. JT turned the shower taps, and steam began to fog the mirror, obscuring their reflections.

He shoved her under the spray first. The water was scalding. She flinched but didn’t cry out. He joined her, the cramped stall forcing their bodies together. Water sluiced over the bruises on her hips, the bite marks on her shoulder. He just looked at them, then at her face.

“Turn around,” he ordered over the drumming water. “Hands on the wall.”

She obeyed, pressing her palms against the cold tiles. He nudged her feet apart with his own. His cock, hard again with a relentless, angry energy, found the place he’d used earlier. It was still loose, slick from water and his own spend leaking from her. He pushed in with one brutal thrust.

A strangled gasp echoed off the tiles, swallowed by the shower’s roar. He didn’t wait. He set a ruthless, driving rhythm, his hips pistoning, his balls slapping against her. The water cascaded over them, doing nothing to ease the friction, only making their skin slide in a hot, slippery torment.

He reached around her hip, his hand finding her cock. It was half-hard, responding to the brutal stimulation despite everything. He jerked her in time with his thrusts, a rough, fast cadence.

“You’re still fucking hard,” he grunted into her ear, his breath hot. “Even after all that. You’re a sick bitch.”

“I can’t— I can’t help it,” she choked out, her forehead against the tile.

“You love it. Admit it.” He slammed into her, his grip tightening on her cock. “Say you love your brother’s cock in your ass.”

She shook her head, water flying. He fucked her harder, the angle deep and punishing. A broken sound, part sob, part moan, rattled from her chest.

“Say it!”

“I love it!” she cried, the words torn from her. “I love it, I’m sorry, I love your cock, please—”

Her confession tipped him over the edge. A raw, animal noise ripped from his throat as he came, spurting hot jets deep inside her, his body locking against hers in a rigid wave of release. The convulsing clench of his orgasm milked her own from her. She came with a silent scream, her cock pulsing in his fist, stripes of white ejaculate hitting the shower wall, immediately diluted by the spray but leaving cloudy trails on the tile.

He stayed buried in her, panting, as the water began to cool. His hand, sticky, fell away from her. He slowly pulled out. She slumped against the wall, utterly spent, her body shuddering with spent tremors.

JT turned off the water. The sudden silence was deafening. He pushed the curtain aside, grabbed a towel, and began to dry himself without looking at her. The evidence of their act dripped down her thighs and swirled toward the drain.

“Clean yourself up,” he said, his voice devoid of the earlier heat. It was just a statement. A fact.

He left her there in the damp, steam-filled silence, the ghost of his possession still aching inside her, the cloudy streaks on the wall the only testament.

Iris listened to the sound of his footsteps retreating down the hall. The water on her skin cooled, raising goosebumps. She felt a slow, hot trickle escape her body and trace a path down her inner thigh, a visceral reminder of where he’d been. Her own cock, impossibly, began to thicken again against her leg, a traitorous pulse of blood that echoed the aching throb in her ass.

She cleaned herself mechanically, her movements slow. The soap stung. Every muscle protested. She studied the faint bruises on her wrists in the foggy mirror, then turned away. She wrapped a towel around herself and stood in the center of the bathroom, listening. The apartment was silent, but it was a different silence now. It felt charged, like the air after a lightning strike.

She found him in his room, sitting on the edge of his bed, scrolling through his phone as if nothing had happened. He didn’t look up. She hovered in the doorway, the damp towel clinging to her hips. A part of her wanted to crawl back to her own room, to hide, to process the wreckage. A stronger, shameful part needed to be near the source of the destruction.

“The towels go in the hamper,” he said, his eyes still on the screen. “You’re dripping on the floor.”

She walked to the wicker basket in the corner, her movements stiff. She let the towel fall. The air was cool on her naked skin. She didn’t pick up the towel. She left it in a heap on the floor and turned to face him, exposed. A test. An offering.

He finally glanced up. His gaze was a physical scrape, moving from her face, down her throat, over her breasts, lingering on the marks he’d left, down to her cock, which was now fully, unmistakably erect. It twitched under his scrutiny.

A slow, cold smile touched his lips. It wasn’t warm. It was a recognition of victory.

“Come here.”

She crossed the room. He didn’t touch her at first. He just looked, his eyes owning every inch of her. Then he reached out, not for her cock, but to cup her balls, his hand heavy and possessive. He weighed them, his thumb rubbing along the sensitive seam behind.

“You really are a fucking slut for it, aren’t you?” he said, his voice conversational. “I ruin you, and you get hard. I tell you you’re nothing, and you drip for me.”

She had no words. Her breath hitched. She looked down at his hand on her, her own need a dark, swirling vortex inside her that swallowed every other feeling—the pain, the humiliation, the brotherly love that now felt like a childhood ghost. This was real. This was now. This was all she wanted.

“Answer me.”

“Yes,” she whispered.

“Yes, what?”

“Yes, I’m a slut for it.” The words burned her throat. “For you.”

He gave her balls a slight, painful squeeze, then released them. “On your knees.”

She sank down, the rough carpet biting into her skin. He undid his jeans, freeing his cock. It was semi-hard, but it swelled rapidly under her fixed, hungry stare. She didn’t wait for a command. She leaned forward and took him into her mouth, engulfing the length with a practiced, desperate hunger. She sucked him with a deep, worshipful rhythm, her tongue swirling around the head on each upward pull.

“Use your hands,” he instructed, his voice tight. She wrapped a fist around the base, working him in tandem with her mouth. He let her service him for a minute, his head tipped back, before he grabbed a fistful of her damp hair. He pulled her off with a wet pop.

“Stand up. Turn around. Bend over the desk.”

Her heart hammered against her ribs. The old, scarred wooden desk was covered in his things—a laptop, textbooks, a half-empty can of soda. She swept her arm across it, sending items clattering to the floor in a chaotic crash. She didn’t care. She bent over, her palms flat on the smooth wood, presenting herself.

She heard him spit, a crude, wet sound. Then the blunt, insistent pressure of his cockhead against her sore, used entrance. He didn’t ask. He just pushed. The stretch was agonizing, a fiery tear that made her cry out, her knuckles bleaching white against the desk. He seated himself fully with one relentless shove, burying himself to the hilt inside her clutching, protesting heat.

“Fuck,” he grunted, the air leaving his lungs. “Still so fucking tight. Even after I wrecked you.”

He began to move, short, deep strokes that lit a fuse of pain deep in her core. But beneath the pain, a shocking, electric pleasure began to spark. Each thrust rubbed his body against her swollen, sensitive cock where it hung beneath her. The dual sensation was overwhelming. Debasing. Perfect.

“You like this, you sick fuck?” he panted, picking up speed. His hips slapped against her ass, a sharp, rhythmic punishment. “You like your little brother using your ass like a cheap fleshlight?”

“Yes,” she moaned, the word mangled against the wood.

“Yes, what?”

“Yes, I like it! I love it! I love your cock in my ass!” The admission was a floodgate opening. A torrent of filth followed, gasping and sincere. “It’s all I want. Fuck me, JT, ruin me, it’s all I’m good for!”

Her words drove him into a frenzy. His thrusts lost all rhythm, becoming fast, brutal, and deep. One of his hands anchored on her hip, the other snaked around her front, clutching her cock in a tight, punishing fist. He jerked her roughly, his grip almost painful, in time with his pounding.

“You’re gonna come,” he snarled in her ear. “You’re gonna come from getting your ass fucked. You’re gonna prove what a fucking degenerate you are.”

She was already there. The coil snapped. Her orgasm ripped through her with a violence that blinded her, her channel clamping around his driving cock in rapid, pulsing spasms. Her own release shot over his hand and the desk below in thick, hot ropes. The intense squeeze of her climax triggered his. With a final, deep plunge, he held himself inside her, and she felt the hot, intimate jet of his come flooding her depths.

They collapsed together over the desk, a mess of sweat and spend and panting breath. He stayed inside her, softening. His forehead was against her shoulder blade. His breath was hot on her skin.

After a long minute, he pulled out. The sound was wet, obscene. She felt an immediate, empty ache, and a slow leak of his come tracing a path down her thigh. He zipped his jeans. He looked at the mess on the desk, on her, on the floor.

Then he walked to her closet. He yanked the door open and started pulling out her clothing. He found her jeans—dark wash, black, skinny, boot-cut. He took armfuls of them and carried them to the window. He shoved the window open, the chill afternoon air rushing in.

One by one, he threw her pants out into the dim alleyway three stories below. They fluttered down like discarded skins.

“JT,” she breathed, watching, still bent over the desk, utterly spent.

He ignored her. He went to her dresser, pulling open drawers, removing every pair of trousers, every pair of panties. They all went out the window. Finally, he turned to face her. His expression was calm, settled. A king in his conquered kingdom.

“Iris,” he said, his voice quiet and absolute. “Throw away all your pants. I only want you to wear dresses or skirts and stockings from now on. No panties when we are at home. Understand?”

She pushed herself upright. Her body felt used, broken, and utterly, completely his. She looked at the empty space in her closet. She felt the cool air from the window on her wet skin. A profound, terrifying peace settled over her. The war was over. She had lost. It was the greatest relief of her life.

“Yes,” she said, her voice clear. “I understand.”

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