Cover of Sibling Rivalry: A Twisted Obsession

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 11: The Vow Sealed in Flesh

The velvet box was warm in her palm. Iris didn’t open it. She just stared at JT’s face, watching the aftermath of her choice settle into his features. The hollows under his eyes seemed to deepen, as if her words had carved something out of him, too.

He moved then, not towards her, but down. He dropped to his knees on the polished concrete floor with a soft thud. The subservience of the pose was a lie. His eyes burned up at her, full of a dark, claiming fire.

His hands went to the silk belt of her robe. A single, sharp tug undid it. The robe fell open, exposing her body, still marked from the night before—the faint bruises on her hips, the love-bite on her shoulder purpling now. The cool morning air touched her skin, but his gaze was hotter.

He didn’t touch her with his hands. He just leaned forward, his breath ghosting over her lower belly. His eyes locked on hers as his mouth found the stiff, aching length of her cock.

Iris gasped. The heat of his mouth was a shock, so intimate it felt surgical. He didn’t tease. He took her in, deep and fast, his lips stretching around her girth. His head bobbed once, twice, a practiced rhythm that made her thighs tremble. Then he stilled, and pushed further.

He was deepthroating her, taking her all the way to the root. Her tip hit the back of his throat and he swallowed, the convulsive muscle massaging her intimately. His nose pressed into the wiry hair at her base. His eyes watered, but they didn’t close. He held her gaze, forcing her to watch him do this obscene, devotional thing.

A low, ragged sound escaped him, vibrating through her. He pulled back slowly, saliva stringing between his lips and her glistening skin. “This is my vow,” he growled, his voice wrecked. “I’ll worship every fucking inch of you for life. The parts you love. The parts you hate. The parts you used to try and hide from me.”

He sealed his mouth over her again, sucking hard, his tongue working a brutal, knowing rhythm along the sensitive vein underneath. His hands came up now, gripping her ass, fingers digging into the soft flesh, holding her in place as he began to fuck her with his mouth in earnest.

It was relentless. He was a man possessed, chasing a ghost only he could see. Iris’s hands flew to his head, her fingers tangling in his dark hair. She didn’t know if she meant to push him away or pull him closer. Her hips stuttered, fucking upward into that wet, desperate heat. Pleasure, sharp and electric, shot up her spine.

“JT… fuck…,” she moaned. The grand piano, the city view, the sterile perfection of the room—it all blurred into a backdrop for this single, profane act.

He pulled off again with a wet pop. A strand of spit connected them. “You’re my wife,” he said, panting. The word was foreign, terrifying. “Say it.”

“I’m your wife,” she breathed, the admission tasting like a secret and a crime.

“And this,” he said, leaning in to lick a broad stripe from her balls to her tip, “is my fucking communion.”

He stood up abruptly. His kiss was a conquest, his tongue pushing into her mouth, letting her taste herself on him—salty, bitter, intimate. He walked her backwards until her back hit the cold glass of the floor-to-ceiling window. The entire city sprawled behind her, a silent audience.

He turned her around, pressing her front against the glass. Her breath fogged the pristine surface. He kicked her feet apart with his own. He was still fully dressed, a fact that felt more degrading than nudity.

He spat into his palm, slicked himself, and without ceremony, entered her from behind. The stretch was easier this time, her body still remembering him from the balcony. He filled her completely, a deep, familiar invasion.

“Look,” he commanded, his voice a harsh whisper by her ear. He wrapped one arm around her waist, anchoring her, while his other hand pressed against the glass beside her head. “Look at all those people. They’re going to work. Having coffee. Living their clean little lives.”

He thrust, hard, driving her body a fraction of an inch forward. The glass shuddered.

“And you’re here,” he continued, setting a steady, penetrating rhythm. “Getting fucked by your brother-turned-husband against a window. This is the truth. This is the sickness we chose. You feel it?”

She did. It was in the ache of her well-used muscles, the thrill of exposure, the terrifying rightness of his body moving inside hers. She nodded, her forehead cool against the windowpane.

“I want to hear you,” he demanded, his pace quickening. His hand slid from her waist down to her cock, stroking her in time with his thrusts. “I want you to scream for it. I want the whole goddamn city to know what you are.”

The dual sensation was too much. The friction of his hand, the deep, grinding penetration—it coiled the tension in her gut to a breaking point. “JT, I’m gonna—“

“Do it,” he snarled, his own control fraying. “Come all over this window. Mark it. Claim it.”

His words tipped her over. She cried out, a sharp, unfiltered sound, as her orgasm ripped through her, her release striping the glass in pearly streaks. Her body clenched around him, milking his own climax from him. He buried his face in her torn robe, his groan muffled against her shoulder as he pulsed inside her, a final, hot claim.

They stayed like that for a long minute, both leaning against the glass, spent. The fog from their breathing began to clear, revealing the awakening city anew.

Slowly, he pulled out. He zipped his jeans. The mundane act felt more intimate than what they’d just done.

Iris, feeling hollowed out and terrifyingly light, turned around. She slid down the glass to sit on the floor, her back against the window. JT stood over her, looking down. He reached into his pocket and pulled out the black velvet box. He opened it. Inside, nestled on satin, was a ring. A single, flawless diamond set in a band of dark, brushed tungsten. It was severe. Beautiful. Unapologetic.

He took her left hand. His own hands were trembling now, the architect’s steadiness gone. He slid the ring onto her finger. It fit perfectly.

“It’s not a promise of happiness,” he said, his voice quiet. “It’s a receipt. Proof of purchase.”

Iris stared at the ring. It felt heavy. It felt like a shackle she had willingly clicked shut. “What now?” she asked, the question encompassing everything—the day, the year, the rest of their lives.

JT sank down to sit beside her, his back against the glass too. He stared out at the view, not at her. “Now,” he said, “we go to the Oasis.”

Iris’s blood ran cold. “It’s a parking garage. You said so.”

“The building’s gone. The ground’s still there.” He finally looked at her, his expression unreadable. “We’re going to stand on the asphalt where the kitchen used to be. And then we’re going to get in a car and drive to that bridge. And we’re going to stand there, in the daylight. And we’re going to look at the water.”

He reached over and took her hand, his fingers interlacing with hers. The metal of the ring was cold between their palms.

“We’re going to visit all the graves. And then,” he said, squeezing her hand, almost painfully, “we’re going to come home.”

He said “home” and the word hung in the sterile air, meaningless. Home was a trailer’s thin walls, a bedroom screaming with color, a bridge’s rusted rail. This penthouse was a cage of his making, and hers now.

Iris pulled her hand from his. The new ring caught the morning light, a cold spark. “We’re not going to the Oasis,” she said, her voice flat. “This isn’t a pilgrimage. It’s a fucking pathology.”

She stood up, her body protesting. She needed to shatter his calm curation. She walked to the grand piano in the corner, its lid a glossy black void. With a sweep of her arm, she cleared its surface. A ceramic vase she didn’t recognize shattered on the floor, scattering water and stems.

“You want to visit graves?” she laughed, a harsh sound. “I’ll show you a grave.” She strode towards the guest room, towards the luggage she’d never unpacked.

JT was on his feet, following. “What are you doing?”

“What you asked!” she yelled over her shoulder. “Bringing the past home!” In the room, she tore open her suitcase. Her hands found it, buried under silk and linen. The plastic was faded, pink and scuffed.

She held it up. The childhood makeup case. The one that had snapped shut on his fingers in another life.

JT stopped in the doorway. His breath hitched. All the architect’s poise evaporated. He looked like the boy on the bridge.

“You kept that,” he whispered.

“Of course I kept it,” she spat, advancing on him. “It’s the only honest thing I ever owned. A tool. A weapon. A reminder.” She threw it onto the king-size bed. It landed with a cheap, hollow clatter. “You want to worship me? Start there. Worship that.”

He moved then, fast. He didn’t go for the case. He went for her. His hands grabbed her shoulders, spinning her, shoving her face-down onto the bed beside the plastic toy. His weight came down on her, knees pinning her thighs.

“You want a weapon?” he growled in her ear. His hand yanked the robe up, baring her. He was already hard again, pressing against her cleft. “Here.”

He entered her with a single, brutal thrust. It was dry, too soon, a burn that made her cry out into the duvet. He didn’t pause. He set a ruthless, punishing pace, each drive of his hips slamming her into the mattress.

“This is the grave,” he snarled, one hand fisting in her hair. “Right here. This is where you buried me. In your fucking sickness. In your need.” His rhythm was chaotic, angry, a physical argument. “You think you kept that case as a trophy? It’s your headstone.”

The pain was sharp, bright. It felt like truth. Iris pushed back against him, meeting his thrusts, a raw and competitive grind. “You liked it,” she gasped. “You loved being my thing. My beautiful, broken thing.”

He released her hair. His hand snaked under her, his fingers rough as they found her cock. He squeezed, not to pleasure, but to dominate. “I was a kid.”

“You were mine,” she grunted, the words torn from her with each drive of his body into hers.

He bent over her, his teeth closing on the shell of her ear. “And now you’re mine.” His voice broke. “You’re my wife. My sick, fucking wife. And we are going to dig up every corpse we ever made together.”

His thrusts became deeper, slower, more deliberate. The initial burn melted into a searing fullness. The hand on her cock began to move, a tight, punishing stroke that matched his tempo. Pleasure, ugly and undeniable, began to coil tight in her gut, intertwined with the pain.

“JT,” she moaned, the fight leaching out of her, replaced by a devastating surrender.

“I know,” he breathed, his own control slipping. His hips stuttered. “I know. Let it go. Come on your childhood grave. I want to feel you fucking break.”

The crude command did it. Her orgasm crashed over her, a wave of shame and release so profound her vision whited out. She screamed into the mattress, her body clamping around him in rhythmic pulses. He followed with a choked-off roar, his own release hot and final inside her.

He collapsed on her, a dead weight. They lay there, a tangled mess of sweat and spent violence. The pink makeup case dug into her ribs.

Minutes bled by. He finally rolled off. They lay on their backs, staring at the ceiling. The city’ distant hum was the only sound.

“The paperwork’s done,” he said, his voice raw. “The legal severance. It’s real. We’re not siblings in any book that matters.”

Iris turned her head. The case lay between them like a third body. “What are you saying?”

He sat up, looking down at her with exhausted, hollow eyes. “Then we’re gonna drive to Canada and get married. I already have the license and paperwork completed.” He reached out, not touching her, but tracing the air above the faded plastic. “And maybe one day we will truly understand what it means to be in love.” He let out a shaky breath. “No matter what soil it began in, a tree always spreads its roots.”

He stood, pulling her up with him. He picked up the makeup case. He didn’t throw it away. He carried it with him, out of the bedroom, towards the door.

“Come on,” he said, not looking back. “The Oasis is waiting. Then the bridge. Then the road north.”

Iris followed, the diamond heavy on her finger, the ghost of him still inside her. The roots were deep, poisoned, and inescapable. They were all she had. They were everything.

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